godot/servers/rendering/shader_language.cpp
2021-04-05 14:05:07 +02:00

7824 lines
243 KiB
C++

/*************************************************************************/
/* shader_language.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "shader_language.h"
#include "core/os/os.h"
#include "core/string/print_string.h"
#include "servers/rendering_server.h"
static bool _is_text_char(char32_t c) {
return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9') || c == '_';
}
static bool _is_number(char32_t c) {
return (c >= '0' && c <= '9');
}
static bool _is_hex(char32_t c) {
return (c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F');
}
String ShaderLanguage::get_operator_text(Operator p_op) {
static const char *op_names[OP_MAX] = { "==",
"!=",
"<",
"<=",
">",
">=",
"&&",
"||",
"!",
"-",
"+",
"-",
"*",
"/",
"%",
"<<",
">>",
"=",
"+=",
"-=",
"*=",
"/=",
"%=",
"<<=",
">>=",
"&=",
"|=",
"^=",
"&",
"|",
"^",
"~",
"++",
"--",
"?",
":",
"++",
"--",
"()",
"construct",
"index" };
return op_names[p_op];
}
const char *ShaderLanguage::token_names[TK_MAX] = {
"EMPTY",
"IDENTIFIER",
"TRUE",
"FALSE",
"REAL_CONSTANT",
"INT_CONSTANT",
"TYPE_VOID",
"TYPE_BOOL",
"TYPE_BVEC2",
"TYPE_BVEC3",
"TYPE_BVEC4",
"TYPE_INT",
"TYPE_IVEC2",
"TYPE_IVEC3",
"TYPE_IVEC4",
"TYPE_UINT",
"TYPE_UVEC2",
"TYPE_UVEC3",
"TYPE_UVEC4",
"TYPE_FLOAT",
"TYPE_VEC2",
"TYPE_VEC3",
"TYPE_VEC4",
"TYPE_MAT2",
"TYPE_MAT3",
"TYPE_MAT4",
"TYPE_SAMPLER2D",
"TYPE_ISAMPLER2D",
"TYPE_USAMPLER2D",
"TYPE_SAMPLER2DARRAY",
"TYPE_ISAMPLER2DARRAY",
"TYPE_USAMPLER2DARRAY",
"TYPE_SAMPLER3D",
"TYPE_ISAMPLER3D",
"TYPE_USAMPLER3D",
"TYPE_SAMPLERCUBE",
"TYPE_SAMPLERCUBEARRAY",
"INTERPOLATION_FLAT",
"INTERPOLATION_SMOOTH",
"CONST",
"PRECISION_LOW",
"PRECISION_MID",
"PRECISION_HIGH",
"OP_EQUAL",
"OP_NOT_EQUAL",
"OP_LESS",
"OP_LESS_EQUAL",
"OP_GREATER",
"OP_GREATER_EQUAL",
"OP_AND",
"OP_OR",
"OP_NOT",
"OP_ADD",
"OP_SUB",
"OP_MUL",
"OP_DIV",
"OP_MOD",
"OP_SHIFT_LEFT",
"OP_SHIFT_RIGHT",
"OP_ASSIGN",
"OP_ASSIGN_ADD",
"OP_ASSIGN_SUB",
"OP_ASSIGN_MUL",
"OP_ASSIGN_DIV",
"OP_ASSIGN_MOD",
"OP_ASSIGN_SHIFT_LEFT",
"OP_ASSIGN_SHIFT_RIGHT",
"OP_ASSIGN_BIT_AND",
"OP_ASSIGN_BIT_OR",
"OP_ASSIGN_BIT_XOR",
"OP_BIT_AND",
"OP_BIT_OR",
"OP_BIT_XOR",
"OP_BIT_INVERT",
"OP_INCREMENT",
"OP_DECREMENT",
"CF_IF",
"CF_ELSE",
"CF_FOR",
"CF_WHILE",
"CF_DO",
"CF_SWITCH",
"CF_CASE",
"CF_BREAK",
"CF_CONTINUE",
"CF_RETURN",
"CF_DISCARD",
"BRACKET_OPEN",
"BRACKET_CLOSE",
"CURLY_BRACKET_OPEN",
"CURLY_BRACKET_CLOSE",
"PARENTHESIS_OPEN",
"PARENTHESIS_CLOSE",
"QUESTION",
"COMMA",
"COLON",
"SEMICOLON",
"PERIOD",
"UNIFORM",
"INSTANCE",
"GLOBAL",
"VARYING",
"IN",
"OUT",
"INOUT",
"RENDER_MODE",
"HINT_WHITE_TEXTURE",
"HINT_BLACK_TEXTURE",
"HINT_NORMAL_TEXTURE",
"HINT_ANISO_TEXTURE",
"HINT_ALBEDO_TEXTURE",
"HINT_BLACK_ALBEDO_TEXTURE",
"HINT_COLOR",
"HINT_RANGE",
"HINT_INSTANCE_INDEX",
"FILTER_NEAREST",
"FILTER_LINEAR",
"FILTER_NEAREST_MIPMAP",
"FILTER_LINEAR_MIPMAP",
"FILTER_NEAREST_MIPMAP_ANISO",
"FILTER_LINEAR_MIPMAP_ANISO",
"REPEAT_ENABLE",
"REPEAT_DISABLE",
"SHADER_TYPE",
"CURSOR",
"ERROR",
"EOF",
};
String ShaderLanguage::get_token_text(Token p_token) {
String name = token_names[p_token.type];
if (p_token.type == TK_INT_CONSTANT || p_token.type == TK_FLOAT_CONSTANT) {
name += "(" + rtos(p_token.constant) + ")";
} else if (p_token.type == TK_IDENTIFIER) {
name += "(" + String(p_token.text) + ")";
} else if (p_token.type == TK_ERROR) {
name += "(" + String(p_token.text) + ")";
}
return name;
}
ShaderLanguage::Token ShaderLanguage::_make_token(TokenType p_type, const StringName &p_text) {
Token tk;
tk.type = p_type;
tk.text = p_text;
tk.line = tk_line;
if (tk.type == TK_ERROR) {
_set_error(p_text);
}
return tk;
}
const ShaderLanguage::KeyWord ShaderLanguage::keyword_list[] = {
{ TK_TRUE, "true" },
{ TK_FALSE, "false" },
{ TK_TYPE_VOID, "void" },
{ TK_TYPE_BOOL, "bool" },
{ TK_TYPE_BVEC2, "bvec2" },
{ TK_TYPE_BVEC3, "bvec3" },
{ TK_TYPE_BVEC4, "bvec4" },
{ TK_TYPE_INT, "int" },
{ TK_TYPE_IVEC2, "ivec2" },
{ TK_TYPE_IVEC3, "ivec3" },
{ TK_TYPE_IVEC4, "ivec4" },
{ TK_TYPE_UINT, "uint" },
{ TK_TYPE_UVEC2, "uvec2" },
{ TK_TYPE_UVEC3, "uvec3" },
{ TK_TYPE_UVEC4, "uvec4" },
{ TK_TYPE_FLOAT, "float" },
{ TK_TYPE_VEC2, "vec2" },
{ TK_TYPE_VEC3, "vec3" },
{ TK_TYPE_VEC4, "vec4" },
{ TK_TYPE_MAT2, "mat2" },
{ TK_TYPE_MAT3, "mat3" },
{ TK_TYPE_MAT4, "mat4" },
{ TK_TYPE_SAMPLER2D, "sampler2D" },
{ TK_TYPE_ISAMPLER2D, "isampler2D" },
{ TK_TYPE_USAMPLER2D, "usampler2D" },
{ TK_TYPE_SAMPLER2DARRAY, "sampler2DArray" },
{ TK_TYPE_ISAMPLER2DARRAY, "isampler2DArray" },
{ TK_TYPE_USAMPLER2DARRAY, "usampler2DArray" },
{ TK_TYPE_SAMPLER3D, "sampler3D" },
{ TK_TYPE_ISAMPLER3D, "isampler3D" },
{ TK_TYPE_USAMPLER3D, "usampler3D" },
{ TK_TYPE_SAMPLERCUBE, "samplerCube" },
{ TK_TYPE_SAMPLERCUBEARRAY, "samplerCubeArray" },
{ TK_INTERPOLATION_FLAT, "flat" },
{ TK_INTERPOLATION_SMOOTH, "smooth" },
{ TK_CONST, "const" },
{ TK_STRUCT, "struct" },
{ TK_PRECISION_LOW, "lowp" },
{ TK_PRECISION_MID, "mediump" },
{ TK_PRECISION_HIGH, "highp" },
{ TK_CF_IF, "if" },
{ TK_CF_ELSE, "else" },
{ TK_CF_FOR, "for" },
{ TK_CF_WHILE, "while" },
{ TK_CF_DO, "do" },
{ TK_CF_SWITCH, "switch" },
{ TK_CF_CASE, "case" },
{ TK_CF_DEFAULT, "default" },
{ TK_CF_BREAK, "break" },
{ TK_CF_CONTINUE, "continue" },
{ TK_CF_RETURN, "return" },
{ TK_CF_DISCARD, "discard" },
{ TK_UNIFORM, "uniform" },
{ TK_INSTANCE, "instance" },
{ TK_GLOBAL, "global" },
{ TK_VARYING, "varying" },
{ TK_ARG_IN, "in" },
{ TK_ARG_OUT, "out" },
{ TK_ARG_INOUT, "inout" },
{ TK_RENDER_MODE, "render_mode" },
{ TK_HINT_WHITE_TEXTURE, "hint_white" },
{ TK_HINT_BLACK_TEXTURE, "hint_black" },
{ TK_HINT_NORMAL_TEXTURE, "hint_normal" },
{ TK_HINT_ROUGHNESS_NORMAL_TEXTURE, "hint_roughness_normal" },
{ TK_HINT_ROUGHNESS_R, "hint_roughness_r" },
{ TK_HINT_ROUGHNESS_G, "hint_roughness_g" },
{ TK_HINT_ROUGHNESS_B, "hint_roughness_b" },
{ TK_HINT_ROUGHNESS_A, "hint_roughness_a" },
{ TK_HINT_ROUGHNESS_GRAY, "hint_roughness_gray" },
{ TK_HINT_ANISO_TEXTURE, "hint_aniso" },
{ TK_HINT_ALBEDO_TEXTURE, "hint_albedo" },
{ TK_HINT_BLACK_ALBEDO_TEXTURE, "hint_black_albedo" },
{ TK_HINT_COLOR, "hint_color" },
{ TK_HINT_RANGE, "hint_range" },
{ TK_HINT_INSTANCE_INDEX, "instance_index" },
{ TK_FILTER_NEAREST, "filter_nearest" },
{ TK_FILTER_LINEAR, "filter_linear" },
{ TK_FILTER_NEAREST_MIPMAP, "filter_nearest_mipmap" },
{ TK_FILTER_LINEAR_MIPMAP, "filter_linear_mipmap" },
{ TK_FILTER_NEAREST_MIPMAP_ANISO, "filter_nearest_mipmap_aniso" },
{ TK_FILTER_LINEAR_MIPMAP_ANISO, "filter_linear_mipmap_aniso" },
{ TK_REPEAT_ENABLE, "repeat_enable" },
{ TK_REPEAT_DISABLE, "repeat_disable" },
{ TK_SHADER_TYPE, "shader_type" },
{ TK_ERROR, nullptr }
};
ShaderLanguage::Token ShaderLanguage::_get_token() {
#define GETCHAR(m_idx) (((char_idx + m_idx) < code.length()) ? code[char_idx + m_idx] : char32_t(0))
while (true) {
char_idx++;
switch (GETCHAR(-1)) {
case 0:
return _make_token(TK_EOF);
case 0xFFFF:
return _make_token(TK_CURSOR); //for completion
case '\t':
case '\r':
case ' ':
continue;
case '\n':
tk_line++;
continue;
case '/': {
switch (GETCHAR(0)) {
case '*': { // block comment
char_idx++;
while (true) {
if (GETCHAR(0) == 0) {
return _make_token(TK_EOF);
}
if (GETCHAR(0) == '*' && GETCHAR(1) == '/') {
char_idx += 2;
break;
} else if (GETCHAR(0) == '\n') {
tk_line++;
}
char_idx++;
}
} break;
case '/': { // line comment skip
while (true) {
if (GETCHAR(0) == '\n') {
tk_line++;
char_idx++;
break;
}
if (GETCHAR(0) == 0) {
return _make_token(TK_EOF);
}
char_idx++;
}
} break;
case '=': { // diveq
char_idx++;
return _make_token(TK_OP_ASSIGN_DIV);
} break;
default:
return _make_token(TK_OP_DIV);
}
continue; //a comment, continue to next token
} break;
case '=': {
if (GETCHAR(0) == '=') {
char_idx++;
return _make_token(TK_OP_EQUAL);
}
return _make_token(TK_OP_ASSIGN);
} break;
case '<': {
if (GETCHAR(0) == '=') {
char_idx++;
return _make_token(TK_OP_LESS_EQUAL);
} else if (GETCHAR(0) == '<') {
char_idx++;
if (GETCHAR(0) == '=') {
char_idx++;
return _make_token(TK_OP_ASSIGN_SHIFT_LEFT);
}
return _make_token(TK_OP_SHIFT_LEFT);
}
return _make_token(TK_OP_LESS);
} break;
case '>': {
if (GETCHAR(0) == '=') {
char_idx++;
return _make_token(TK_OP_GREATER_EQUAL);
} else if (GETCHAR(0) == '>') {
char_idx++;
if (GETCHAR(0) == '=') {
char_idx++;
return _make_token(TK_OP_ASSIGN_SHIFT_RIGHT);
}
return _make_token(TK_OP_SHIFT_RIGHT);
}
return _make_token(TK_OP_GREATER);
} break;
case '!': {
if (GETCHAR(0) == '=') {
char_idx++;
return _make_token(TK_OP_NOT_EQUAL);
}
return _make_token(TK_OP_NOT);
} break;
//case '"' //string - no strings in shader
//case '\'' //string - no strings in shader
case '{':
return _make_token(TK_CURLY_BRACKET_OPEN);
case '}':
return _make_token(TK_CURLY_BRACKET_CLOSE);
case '[':
return _make_token(TK_BRACKET_OPEN);
case ']':
return _make_token(TK_BRACKET_CLOSE);
case '(':
return _make_token(TK_PARENTHESIS_OPEN);
case ')':
return _make_token(TK_PARENTHESIS_CLOSE);
case ',':
return _make_token(TK_COMMA);
case ';':
return _make_token(TK_SEMICOLON);
case '?':
return _make_token(TK_QUESTION);
case ':':
return _make_token(TK_COLON);
case '^':
return _make_token(TK_OP_BIT_XOR);
case '~':
return _make_token(TK_OP_BIT_INVERT);
case '&': {
if (GETCHAR(0) == '=') {
char_idx++;
return _make_token(TK_OP_ASSIGN_BIT_AND);
} else if (GETCHAR(0) == '&') {
char_idx++;
return _make_token(TK_OP_AND);
}
return _make_token(TK_OP_BIT_AND);
} break;
case '|': {
if (GETCHAR(0) == '=') {
char_idx++;
return _make_token(TK_OP_ASSIGN_BIT_OR);
} else if (GETCHAR(0) == '|') {
char_idx++;
return _make_token(TK_OP_OR);
}
return _make_token(TK_OP_BIT_OR);
} break;
case '*': {
if (GETCHAR(0) == '=') {
char_idx++;
return _make_token(TK_OP_ASSIGN_MUL);
}
return _make_token(TK_OP_MUL);
} break;
case '+': {
if (GETCHAR(0) == '=') {
char_idx++;
return _make_token(TK_OP_ASSIGN_ADD);
} else if (GETCHAR(0) == '+') {
char_idx++;
return _make_token(TK_OP_INCREMENT);
}
return _make_token(TK_OP_ADD);
} break;
case '-': {
if (GETCHAR(0) == '=') {
char_idx++;
return _make_token(TK_OP_ASSIGN_SUB);
} else if (GETCHAR(0) == '-') {
char_idx++;
return _make_token(TK_OP_DECREMENT);
}
return _make_token(TK_OP_SUB);
} break;
case '%': {
if (GETCHAR(0) == '=') {
char_idx++;
return _make_token(TK_OP_ASSIGN_MOD);
}
return _make_token(TK_OP_MOD);
} break;
default: {
char_idx--; //go back one, since we have no idea what this is
if (_is_number(GETCHAR(0)) || (GETCHAR(0) == '.' && _is_number(GETCHAR(1)))) {
// parse number
bool period_found = false;
bool exponent_found = false;
bool hexa_found = false;
bool sign_found = false;
bool float_suffix_found = false;
String str;
int i = 0;
while (true) {
if (GETCHAR(i) == '.') {
if (period_found || exponent_found || hexa_found || float_suffix_found) {
return _make_token(TK_ERROR, "Invalid numeric constant");
}
period_found = true;
} else if (GETCHAR(i) == 'x') {
if (hexa_found || str.length() != 1 || str[0] != '0') {
return _make_token(TK_ERROR, "Invalid numeric constant");
}
hexa_found = true;
} else if (GETCHAR(i) == 'e' && !hexa_found) {
if (exponent_found || float_suffix_found) {
return _make_token(TK_ERROR, "Invalid numeric constant");
}
exponent_found = true;
} else if (GETCHAR(i) == 'f' && !hexa_found) {
if (exponent_found) {
return _make_token(TK_ERROR, "Invalid numeric constant");
}
float_suffix_found = true;
} else if (_is_number(GETCHAR(i))) {
if (float_suffix_found) {
return _make_token(TK_ERROR, "Invalid numeric constant");
}
} else if (hexa_found && _is_hex(GETCHAR(i))) {
} else if ((GETCHAR(i) == '-' || GETCHAR(i) == '+') && exponent_found) {
if (sign_found) {
return _make_token(TK_ERROR, "Invalid numeric constant");
}
sign_found = true;
} else {
break;
}
str += char32_t(GETCHAR(i));
i++;
}
char32_t last_char = str[str.length() - 1];
if (hexa_found) {
//integer(hex)
if (str.size() > 11 || !str.is_valid_hex_number(true)) { // > 0xFFFFFFFF
return _make_token(TK_ERROR, "Invalid (hexadecimal) numeric constant");
}
} else if (period_found || exponent_found || float_suffix_found) {
//floats
if (period_found) {
if (float_suffix_found) {
//checks for eg "1.f" or "1.99f" notations
if (last_char != 'f') {
return _make_token(TK_ERROR, "Invalid (float) numeric constant");
}
} else {
//checks for eg. "1." or "1.99" notations
if (last_char != '.' && !_is_number(last_char)) {
return _make_token(TK_ERROR, "Invalid (float) numeric constant");
}
}
} else if (float_suffix_found) {
// if no period found the float suffix must be the last character, like in "2f" for "2.0"
if (last_char != 'f') {
return _make_token(TK_ERROR, "Invalid (float) numeric constant");
}
}
if (float_suffix_found) {
//strip the suffix
str = str.left(str.length() - 1);
//compensate reading cursor position
char_idx += 1;
}
if (!str.is_valid_float()) {
return _make_token(TK_ERROR, "Invalid (float) numeric constant");
}
} else {
//integers
if (!_is_number(last_char)) {
return _make_token(TK_ERROR, "Invalid (integer) numeric constant");
}
if (!str.is_valid_integer()) {
return _make_token(TK_ERROR, "Invalid numeric constant");
}
}
char_idx += str.length();
Token tk;
if (period_found || exponent_found || float_suffix_found) {
tk.type = TK_FLOAT_CONSTANT;
} else {
tk.type = TK_INT_CONSTANT;
}
if (hexa_found) {
tk.constant = (double)str.hex_to_int();
} else {
tk.constant = str.to_float();
}
tk.line = tk_line;
return tk;
}
if (GETCHAR(0) == '.') {
//parse period
char_idx++;
return _make_token(TK_PERIOD);
}
if (_is_text_char(GETCHAR(0))) {
// parse identifier
String str;
while (_is_text_char(GETCHAR(0))) {
str += char32_t(GETCHAR(0));
char_idx++;
}
//see if keyword
//should be converted to a static map
int idx = 0;
while (keyword_list[idx].text) {
if (str == keyword_list[idx].text) {
return _make_token(keyword_list[idx].token);
}
idx++;
}
str = str.replace("dus_", "_");
return _make_token(TK_IDENTIFIER, str);
}
if (GETCHAR(0) > 32) {
return _make_token(TK_ERROR, "Tokenizer: Unknown character #" + itos(GETCHAR(0)) + ": '" + String::chr(GETCHAR(0)) + "'");
} else {
return _make_token(TK_ERROR, "Tokenizer: Unknown character #" + itos(GETCHAR(0)));
}
} break;
}
}
ERR_PRINT("BUG");
return Token();
#undef GETCHAR
}
String ShaderLanguage::token_debug(const String &p_code) {
clear();
code = p_code;
String output;
Token tk = _get_token();
while (tk.type != TK_EOF && tk.type != TK_ERROR) {
output += itos(tk_line) + ": " + get_token_text(tk) + "\n";
tk = _get_token();
}
return output;
}
bool ShaderLanguage::is_token_variable_datatype(TokenType p_type) {
return (
p_type == TK_TYPE_VOID ||
p_type == TK_TYPE_BOOL ||
p_type == TK_TYPE_BVEC2 ||
p_type == TK_TYPE_BVEC3 ||
p_type == TK_TYPE_BVEC4 ||
p_type == TK_TYPE_INT ||
p_type == TK_TYPE_IVEC2 ||
p_type == TK_TYPE_IVEC3 ||
p_type == TK_TYPE_IVEC4 ||
p_type == TK_TYPE_UINT ||
p_type == TK_TYPE_UVEC2 ||
p_type == TK_TYPE_UVEC3 ||
p_type == TK_TYPE_UVEC4 ||
p_type == TK_TYPE_FLOAT ||
p_type == TK_TYPE_VEC2 ||
p_type == TK_TYPE_VEC3 ||
p_type == TK_TYPE_VEC4 ||
p_type == TK_TYPE_MAT2 ||
p_type == TK_TYPE_MAT3 ||
p_type == TK_TYPE_MAT4);
}
bool ShaderLanguage::is_token_datatype(TokenType p_type) {
return (
p_type == TK_TYPE_VOID ||
p_type == TK_TYPE_BOOL ||
p_type == TK_TYPE_BVEC2 ||
p_type == TK_TYPE_BVEC3 ||
p_type == TK_TYPE_BVEC4 ||
p_type == TK_TYPE_INT ||
p_type == TK_TYPE_IVEC2 ||
p_type == TK_TYPE_IVEC3 ||
p_type == TK_TYPE_IVEC4 ||
p_type == TK_TYPE_UINT ||
p_type == TK_TYPE_UVEC2 ||
p_type == TK_TYPE_UVEC3 ||
p_type == TK_TYPE_UVEC4 ||
p_type == TK_TYPE_FLOAT ||
p_type == TK_TYPE_VEC2 ||
p_type == TK_TYPE_VEC3 ||
p_type == TK_TYPE_VEC4 ||
p_type == TK_TYPE_MAT2 ||
p_type == TK_TYPE_MAT3 ||
p_type == TK_TYPE_MAT4 ||
p_type == TK_TYPE_SAMPLER2D ||
p_type == TK_TYPE_ISAMPLER2D ||
p_type == TK_TYPE_USAMPLER2D ||
p_type == TK_TYPE_SAMPLER2DARRAY ||
p_type == TK_TYPE_ISAMPLER2DARRAY ||
p_type == TK_TYPE_USAMPLER2DARRAY ||
p_type == TK_TYPE_SAMPLER3D ||
p_type == TK_TYPE_ISAMPLER3D ||
p_type == TK_TYPE_USAMPLER3D ||
p_type == TK_TYPE_SAMPLERCUBE ||
p_type == TK_TYPE_SAMPLERCUBEARRAY);
}
ShaderLanguage::DataType ShaderLanguage::get_token_datatype(TokenType p_type) {
return DataType(p_type - TK_TYPE_VOID);
}
bool ShaderLanguage::is_token_interpolation(TokenType p_type) {
return (
p_type == TK_INTERPOLATION_FLAT ||
p_type == TK_INTERPOLATION_SMOOTH);
}
ShaderLanguage::DataInterpolation ShaderLanguage::get_token_interpolation(TokenType p_type) {
if (p_type == TK_INTERPOLATION_FLAT) {
return INTERPOLATION_FLAT;
} else {
return INTERPOLATION_SMOOTH;
}
}
bool ShaderLanguage::is_token_precision(TokenType p_type) {
return (
p_type == TK_PRECISION_LOW ||
p_type == TK_PRECISION_MID ||
p_type == TK_PRECISION_HIGH);
}
ShaderLanguage::DataPrecision ShaderLanguage::get_token_precision(TokenType p_type) {
if (p_type == TK_PRECISION_LOW) {
return PRECISION_LOWP;
} else if (p_type == TK_PRECISION_HIGH) {
return PRECISION_HIGHP;
} else {
return PRECISION_MEDIUMP;
}
}
String ShaderLanguage::get_precision_name(DataPrecision p_type) {
switch (p_type) {
case PRECISION_LOWP:
return "lowp";
case PRECISION_MEDIUMP:
return "mediump";
case PRECISION_HIGHP:
return "highp";
default:
break;
}
return "";
}
String ShaderLanguage::get_datatype_name(DataType p_type) {
switch (p_type) {
case TYPE_VOID:
return "void";
case TYPE_BOOL:
return "bool";
case TYPE_BVEC2:
return "bvec2";
case TYPE_BVEC3:
return "bvec3";
case TYPE_BVEC4:
return "bvec4";
case TYPE_INT:
return "int";
case TYPE_IVEC2:
return "ivec2";
case TYPE_IVEC3:
return "ivec3";
case TYPE_IVEC4:
return "ivec4";
case TYPE_UINT:
return "uint";
case TYPE_UVEC2:
return "uvec2";
case TYPE_UVEC3:
return "uvec3";
case TYPE_UVEC4:
return "uvec4";
case TYPE_FLOAT:
return "float";
case TYPE_VEC2:
return "vec2";
case TYPE_VEC3:
return "vec3";
case TYPE_VEC4:
return "vec4";
case TYPE_MAT2:
return "mat2";
case TYPE_MAT3:
return "mat3";
case TYPE_MAT4:
return "mat4";
case TYPE_SAMPLER2D:
return "sampler2D";
case TYPE_ISAMPLER2D:
return "isampler2D";
case TYPE_USAMPLER2D:
return "usampler2D";
case TYPE_SAMPLER2DARRAY:
return "sampler2DArray";
case TYPE_ISAMPLER2DARRAY:
return "isampler2DArray";
case TYPE_USAMPLER2DARRAY:
return "usampler2DArray";
case TYPE_SAMPLER3D:
return "sampler3D";
case TYPE_ISAMPLER3D:
return "isampler3D";
case TYPE_USAMPLER3D:
return "usampler3D";
case TYPE_SAMPLERCUBE:
return "samplerCube";
case TYPE_SAMPLERCUBEARRAY:
return "samplerCubeArray";
case TYPE_STRUCT:
return "struct";
case TYPE_MAX:
return "invalid";
}
return "";
}
bool ShaderLanguage::is_token_nonvoid_datatype(TokenType p_type) {
return is_token_datatype(p_type) && p_type != TK_TYPE_VOID;
}
void ShaderLanguage::clear() {
current_function = StringName();
completion_type = COMPLETION_NONE;
completion_block = nullptr;
completion_function = StringName();
completion_class = SubClassTag::TAG_GLOBAL;
completion_struct = StringName();
error_line = 0;
tk_line = 1;
char_idx = 0;
error_set = false;
error_str = "";
last_const = false;
while (nodes) {
Node *n = nodes;
nodes = nodes->next;
memdelete(n);
}
}
bool ShaderLanguage::_find_identifier(const BlockNode *p_block, bool p_allow_reassign, const FunctionInfo &p_function_info, const StringName &p_identifier, DataType *r_data_type, IdentifierType *r_type, bool *r_is_const, int *r_array_size, StringName *r_struct_name, ConstantNode::Value *r_constant_value) {
if (p_function_info.built_ins.has(p_identifier)) {
if (r_data_type) {
*r_data_type = p_function_info.built_ins[p_identifier].type;
}
if (r_is_const) {
*r_is_const = p_function_info.built_ins[p_identifier].constant;
}
if (r_type) {
*r_type = IDENTIFIER_BUILTIN_VAR;
}
return true;
}
if (p_function_info.stage_functions.has(p_identifier)) {
if (r_data_type) {
*r_data_type = p_function_info.stage_functions[p_identifier].return_type;
}
if (r_is_const) {
*r_is_const = true;
}
if (r_type) {
*r_type = IDENTIFIER_FUNCTION;
}
return true;
}
FunctionNode *function = nullptr;
while (p_block) {
if (p_block->variables.has(p_identifier)) {
if (r_data_type) {
*r_data_type = p_block->variables[p_identifier].type;
}
if (r_is_const) {
*r_is_const = p_block->variables[p_identifier].is_const;
}
if (r_array_size) {
*r_array_size = p_block->variables[p_identifier].array_size;
}
if (r_type) {
*r_type = IDENTIFIER_LOCAL_VAR;
}
if (r_struct_name) {
*r_struct_name = p_block->variables[p_identifier].struct_name;
}
if (r_constant_value) {
*r_constant_value = p_block->variables[p_identifier].value;
}
return true;
}
if (p_block->parent_function) {
function = p_block->parent_function;
break;
} else {
if (p_allow_reassign) {
break;
}
ERR_FAIL_COND_V(!p_block->parent_block, false);
p_block = p_block->parent_block;
}
}
if (function) {
for (int i = 0; i < function->arguments.size(); i++) {
if (function->arguments[i].name == p_identifier) {
if (r_data_type) {
*r_data_type = function->arguments[i].type;
}
if (r_type) {
*r_type = IDENTIFIER_FUNCTION_ARGUMENT;
}
if (r_struct_name) {
*r_struct_name = function->arguments[i].type_str;
}
if (r_is_const) {
*r_is_const = function->arguments[i].is_const;
}
return true;
}
}
}
if (shader->varyings.has(p_identifier)) {
if (r_data_type) {
*r_data_type = shader->varyings[p_identifier].type;
}
if (r_array_size) {
*r_array_size = shader->varyings[p_identifier].array_size;
}
if (r_type) {
*r_type = IDENTIFIER_VARYING;
}
return true;
}
if (shader->uniforms.has(p_identifier)) {
if (r_data_type) {
*r_data_type = shader->uniforms[p_identifier].type;
}
if (r_type) {
*r_type = IDENTIFIER_UNIFORM;
}
return true;
}
if (shader->constants.has(p_identifier)) {
if (r_is_const) {
*r_is_const = true;
}
if (r_data_type) {
*r_data_type = shader->constants[p_identifier].type;
}
if (r_array_size) {
*r_array_size = shader->constants[p_identifier].array_size;
}
if (r_type) {
*r_type = IDENTIFIER_CONSTANT;
}
if (r_struct_name) {
*r_struct_name = shader->constants[p_identifier].type_str;
}
if (r_constant_value) {
if (shader->constants[p_identifier].initializer && shader->constants[p_identifier].initializer->values.size() == 1) {
*r_constant_value = shader->constants[p_identifier].initializer->values[0];
}
}
return true;
}
for (int i = 0; i < shader->functions.size(); i++) {
if (!shader->functions[i].callable) {
continue;
}
if (shader->functions[i].name == p_identifier) {
if (r_data_type) {
*r_data_type = shader->functions[i].function->return_type;
}
if (r_type) {
*r_type = IDENTIFIER_FUNCTION;
}
return true;
}
}
return false;
}
bool ShaderLanguage::_validate_operator(OperatorNode *p_op, DataType *r_ret_type) {
bool valid = false;
DataType ret_type = TYPE_VOID;
switch (p_op->op) {
case OP_EQUAL:
case OP_NOT_EQUAL: {
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
valid = na == nb;
ret_type = TYPE_BOOL;
} break;
case OP_LESS:
case OP_LESS_EQUAL:
case OP_GREATER:
case OP_GREATER_EQUAL: {
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
valid = na == nb && (na == TYPE_UINT || na == TYPE_INT || na == TYPE_FLOAT);
ret_type = TYPE_BOOL;
} break;
case OP_AND:
case OP_OR: {
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
valid = na == nb && na == TYPE_BOOL;
ret_type = TYPE_BOOL;
} break;
case OP_NOT: {
DataType na = p_op->arguments[0]->get_datatype();
valid = na == TYPE_BOOL;
ret_type = TYPE_BOOL;
} break;
case OP_INCREMENT:
case OP_DECREMENT:
case OP_POST_INCREMENT:
case OP_POST_DECREMENT:
case OP_NEGATE: {
DataType na = p_op->arguments[0]->get_datatype();
valid = na > TYPE_BOOL && na < TYPE_MAT2;
ret_type = na;
} break;
case OP_ADD:
case OP_SUB:
case OP_MUL:
case OP_DIV: {
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
if (na > nb) {
//make things easier;
SWAP(na, nb);
}
if (na == nb) {
valid = (na > TYPE_BOOL && na <= TYPE_MAT4);
ret_type = na;
} else if (na == TYPE_INT && nb == TYPE_IVEC2) {
valid = true;
ret_type = TYPE_IVEC2;
} else if (na == TYPE_INT && nb == TYPE_IVEC3) {
valid = true;
ret_type = TYPE_IVEC3;
} else if (na == TYPE_INT && nb == TYPE_IVEC4) {
valid = true;
ret_type = TYPE_IVEC4;
} else if (na == TYPE_UINT && nb == TYPE_UVEC2) {
valid = true;
ret_type = TYPE_UVEC2;
} else if (na == TYPE_UINT && nb == TYPE_UVEC3) {
valid = true;
ret_type = TYPE_UVEC3;
} else if (na == TYPE_UINT && nb == TYPE_UVEC4) {
valid = true;
ret_type = TYPE_UVEC4;
} else if (na == TYPE_FLOAT && nb == TYPE_VEC2) {
valid = true;
ret_type = TYPE_VEC2;
} else if (na == TYPE_FLOAT && nb == TYPE_VEC3) {
valid = true;
ret_type = TYPE_VEC3;
} else if (na == TYPE_FLOAT && nb == TYPE_VEC4) {
valid = true;
ret_type = TYPE_VEC4;
} else if (na == TYPE_FLOAT && nb == TYPE_MAT2) {
valid = true;
ret_type = TYPE_MAT2;
} else if (na == TYPE_FLOAT && nb == TYPE_MAT3) {
valid = true;
ret_type = TYPE_MAT3;
} else if (na == TYPE_FLOAT && nb == TYPE_MAT4) {
valid = true;
ret_type = TYPE_MAT4;
} else if (p_op->op == OP_MUL && na == TYPE_VEC2 && nb == TYPE_MAT2) {
valid = true;
ret_type = TYPE_VEC2;
} else if (p_op->op == OP_MUL && na == TYPE_VEC3 && nb == TYPE_MAT3) {
valid = true;
ret_type = TYPE_VEC3;
} else if (p_op->op == OP_MUL && na == TYPE_VEC4 && nb == TYPE_MAT4) {
valid = true;
ret_type = TYPE_VEC4;
}
} break;
case OP_ASSIGN_MOD:
case OP_MOD: {
/*
* The operator modulus (%) operates on signed or unsigned integers or integer vectors. The operand
* types must both be signed or both be unsigned. The operands cannot be vectors of differing size. If
* one operand is a scalar and the other vector, then the scalar is applied component-wise to the vector,
* resulting in the same type as the vector. If both are vectors of the same size, the result is computed
* component-wise.
*/
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
if (na == TYPE_INT && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_INT;
} else if (na == TYPE_IVEC2 && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_IVEC2;
} else if (na == TYPE_IVEC3 && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_IVEC3;
} else if (na == TYPE_IVEC4 && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_IVEC4;
} else if (na == TYPE_IVEC2 && nb == TYPE_IVEC2) {
valid = true;
ret_type = TYPE_IVEC2;
} else if (na == TYPE_IVEC3 && nb == TYPE_IVEC3) {
valid = true;
ret_type = TYPE_IVEC3;
} else if (na == TYPE_IVEC4 && nb == TYPE_IVEC4) {
valid = true;
ret_type = TYPE_IVEC4;
/////
} else if (na == TYPE_UINT && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UINT;
} else if (na == TYPE_UVEC2 && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UVEC2;
} else if (na == TYPE_UVEC3 && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UVEC3;
} else if (na == TYPE_UVEC4 && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UVEC4;
} else if (na == TYPE_UVEC2 && nb == TYPE_UVEC2) {
valid = true;
ret_type = TYPE_UVEC2;
} else if (na == TYPE_UVEC3 && nb == TYPE_UVEC3) {
valid = true;
ret_type = TYPE_UVEC3;
} else if (na == TYPE_UVEC4 && nb == TYPE_UVEC4) {
valid = true;
ret_type = TYPE_UVEC4;
}
} break;
case OP_ASSIGN_SHIFT_LEFT:
case OP_ASSIGN_SHIFT_RIGHT:
case OP_SHIFT_LEFT:
case OP_SHIFT_RIGHT: {
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
if (na == TYPE_INT && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_INT;
} else if (na == TYPE_IVEC2 && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_IVEC2;
} else if (na == TYPE_IVEC3 && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_IVEC3;
} else if (na == TYPE_IVEC4 && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_IVEC4;
} else if (na == TYPE_IVEC2 && nb == TYPE_IVEC2) {
valid = true;
ret_type = TYPE_IVEC2;
} else if (na == TYPE_IVEC3 && nb == TYPE_IVEC3) {
valid = true;
ret_type = TYPE_IVEC3;
} else if (na == TYPE_IVEC4 && nb == TYPE_IVEC4) {
valid = true;
ret_type = TYPE_IVEC4;
} else if (na == TYPE_UINT && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UINT;
} else if (na == TYPE_UVEC2 && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UVEC2;
} else if (na == TYPE_UVEC3 && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UVEC3;
} else if (na == TYPE_UVEC4 && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UVEC4;
} else if (na == TYPE_UVEC2 && nb == TYPE_UVEC2) {
valid = true;
ret_type = TYPE_UVEC2;
} else if (na == TYPE_UVEC3 && nb == TYPE_UVEC3) {
valid = true;
ret_type = TYPE_UVEC3;
} else if (na == TYPE_UVEC4 && nb == TYPE_UVEC4) {
valid = true;
ret_type = TYPE_UVEC4;
}
} break;
case OP_ASSIGN: {
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
if (na == TYPE_STRUCT || nb == TYPE_STRUCT) {
valid = p_op->arguments[0]->get_datatype_name() == p_op->arguments[1]->get_datatype_name();
} else {
valid = na == nb;
}
ret_type = na;
} break;
case OP_ASSIGN_ADD:
case OP_ASSIGN_SUB:
case OP_ASSIGN_MUL:
case OP_ASSIGN_DIV: {
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
if (na == nb) {
valid = (na > TYPE_BOOL && na < TYPE_MAT2) || (p_op->op == OP_ASSIGN_MUL && na >= TYPE_MAT2 && na <= TYPE_MAT4);
ret_type = na;
} else if (na == TYPE_IVEC2 && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_IVEC2;
} else if (na == TYPE_IVEC3 && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_IVEC3;
} else if (na == TYPE_IVEC4 && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_IVEC4;
} else if (na == TYPE_UVEC2 && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UVEC2;
} else if (na == TYPE_UVEC3 && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UVEC3;
} else if (na == TYPE_UVEC4 && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UVEC4;
} else if (na == TYPE_VEC2 && nb == TYPE_FLOAT) {
valid = true;
ret_type = TYPE_VEC2;
} else if (na == TYPE_VEC3 && nb == TYPE_FLOAT) {
valid = true;
ret_type = TYPE_VEC3;
} else if (na == TYPE_VEC4 && nb == TYPE_FLOAT) {
valid = true;
ret_type = TYPE_VEC4;
} else if (na == TYPE_MAT2 && nb == TYPE_FLOAT) {
valid = true;
ret_type = TYPE_MAT2;
} else if (na == TYPE_MAT3 && nb == TYPE_FLOAT) {
valid = true;
ret_type = TYPE_MAT3;
} else if (na == TYPE_MAT4 && nb == TYPE_FLOAT) {
valid = true;
ret_type = TYPE_MAT4;
} else if (p_op->op == OP_ASSIGN_MUL && na == TYPE_VEC2 && nb == TYPE_MAT2) {
valid = true;
ret_type = TYPE_VEC2;
} else if (p_op->op == OP_ASSIGN_MUL && na == TYPE_VEC3 && nb == TYPE_MAT3) {
valid = true;
ret_type = TYPE_VEC3;
} else if (p_op->op == OP_ASSIGN_MUL && na == TYPE_VEC4 && nb == TYPE_MAT4) {
valid = true;
ret_type = TYPE_VEC4;
}
} break;
case OP_ASSIGN_BIT_AND:
case OP_ASSIGN_BIT_OR:
case OP_ASSIGN_BIT_XOR:
case OP_BIT_AND:
case OP_BIT_OR:
case OP_BIT_XOR: {
/*
* The bitwise operators and (&), exclusive-or (^), and inclusive-or (|). The operands must be of type
* signed or unsigned integers or integer vectors. The operands cannot be vectors of differing size. If
* one operand is a scalar and the other a vector, the scalar is applied component-wise to the vector,
* resulting in the same type as the vector. The fundamental types of the operands (signed or unsigned)
* must match.
*/
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
if (na > nb && p_op->op >= OP_BIT_AND) {
//can swap for non assign
SWAP(na, nb);
}
if (na == TYPE_INT && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_INT;
} else if (na == TYPE_IVEC2 && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_IVEC2;
} else if (na == TYPE_IVEC3 && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_IVEC3;
} else if (na == TYPE_IVEC4 && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_IVEC4;
} else if (na == TYPE_IVEC2 && nb == TYPE_IVEC2) {
valid = true;
ret_type = TYPE_IVEC2;
} else if (na == TYPE_IVEC3 && nb == TYPE_IVEC3) {
valid = true;
ret_type = TYPE_IVEC3;
} else if (na == TYPE_IVEC4 && nb == TYPE_IVEC4) {
valid = true;
ret_type = TYPE_IVEC4;
/////
} else if (na == TYPE_UINT && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UINT;
} else if (na == TYPE_UVEC2 && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UVEC2;
} else if (na == TYPE_UVEC3 && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UVEC3;
} else if (na == TYPE_UVEC4 && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UVEC4;
} else if (na == TYPE_UVEC2 && nb == TYPE_UVEC2) {
valid = true;
ret_type = TYPE_UVEC2;
} else if (na == TYPE_UVEC3 && nb == TYPE_UVEC3) {
valid = true;
ret_type = TYPE_UVEC3;
} else if (na == TYPE_UVEC4 && nb == TYPE_UVEC4) {
valid = true;
ret_type = TYPE_UVEC4;
}
} break;
case OP_BIT_INVERT: { //unaries
DataType na = p_op->arguments[0]->get_datatype();
valid = na >= TYPE_INT && na < TYPE_FLOAT;
ret_type = na;
} break;
case OP_SELECT_IF: {
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
DataType nc = p_op->arguments[2]->get_datatype();
valid = na == TYPE_BOOL && (nb == nc);
ret_type = nb;
} break;
default: {
ERR_FAIL_V(false);
}
}
if (r_ret_type) {
*r_ret_type = ret_type;
}
return valid;
}
const ShaderLanguage::BuiltinFuncDef ShaderLanguage::builtin_func_defs[] = {
//constructors
{ "bool", TYPE_BOOL, { TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
{ "bvec2", TYPE_BVEC2, { TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
{ "bvec2", TYPE_BVEC2, { TYPE_BOOL, TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
{ "bvec3", TYPE_BVEC3, { TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
{ "bvec3", TYPE_BVEC3, { TYPE_BOOL, TYPE_BOOL, TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
{ "bvec3", TYPE_BVEC3, { TYPE_BVEC2, TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
{ "bvec3", TYPE_BVEC3, { TYPE_BOOL, TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "bvec4", TYPE_BVEC4, { TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
{ "bvec4", TYPE_BVEC4, { TYPE_BOOL, TYPE_BOOL, TYPE_BOOL, TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
{ "bvec4", TYPE_BVEC4, { TYPE_BOOL, TYPE_BVEC2, TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
{ "bvec4", TYPE_BVEC4, { TYPE_BVEC2, TYPE_BOOL, TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
{ "bvec4", TYPE_BVEC4, { TYPE_BOOL, TYPE_BOOL, TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "bvec4", TYPE_BVEC4, { TYPE_BOOL, TYPE_BVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "bvec4", TYPE_BVEC4, { TYPE_BVEC3, TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
{ "bvec4", TYPE_BVEC4, { TYPE_BVEC2, TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "float", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "vec2", TYPE_VEC2, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "vec2", TYPE_VEC2, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "vec3", TYPE_VEC3, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "vec3", TYPE_VEC3, { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "vec3", TYPE_VEC3, { TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "vec3", TYPE_VEC3, { TYPE_FLOAT, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "vec4", TYPE_VEC4, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "vec4", TYPE_VEC4, { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "vec4", TYPE_VEC4, { TYPE_FLOAT, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "vec4", TYPE_VEC4, { TYPE_VEC2, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "vec4", TYPE_VEC4, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "vec4", TYPE_VEC4, { TYPE_FLOAT, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "vec4", TYPE_VEC4, { TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "vec4", TYPE_VEC4, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "int", TYPE_INT, { TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "ivec2", TYPE_IVEC2, { TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "ivec2", TYPE_IVEC2, { TYPE_INT, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "ivec3", TYPE_IVEC3, { TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "ivec3", TYPE_IVEC3, { TYPE_INT, TYPE_INT, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "ivec3", TYPE_IVEC3, { TYPE_IVEC2, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "ivec3", TYPE_IVEC3, { TYPE_INT, TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "ivec4", TYPE_IVEC4, { TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "ivec4", TYPE_IVEC4, { TYPE_INT, TYPE_INT, TYPE_INT, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "ivec4", TYPE_IVEC4, { TYPE_INT, TYPE_IVEC2, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "ivec4", TYPE_IVEC4, { TYPE_IVEC2, TYPE_INT, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "ivec4", TYPE_IVEC4, { TYPE_INT, TYPE_INT, TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "ivec4", TYPE_IVEC4, { TYPE_INT, TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "ivec4", TYPE_IVEC4, { TYPE_IVEC3, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "ivec4", TYPE_IVEC4, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "uint", TYPE_UINT, { TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "uvec2", TYPE_UVEC2, { TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "uvec2", TYPE_UVEC2, { TYPE_UINT, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "uvec3", TYPE_UVEC3, { TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "uvec3", TYPE_UVEC3, { TYPE_UINT, TYPE_UINT, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "uvec3", TYPE_UVEC3, { TYPE_UVEC2, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "uvec3", TYPE_UVEC3, { TYPE_UINT, TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "uvec4", TYPE_UVEC4, { TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "uvec4", TYPE_UVEC4, { TYPE_UINT, TYPE_UINT, TYPE_UINT, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "uvec4", TYPE_UVEC4, { TYPE_UINT, TYPE_UVEC2, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "uvec4", TYPE_UVEC4, { TYPE_UVEC2, TYPE_UINT, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "uvec4", TYPE_UVEC4, { TYPE_UINT, TYPE_UINT, TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "uvec4", TYPE_UVEC4, { TYPE_UINT, TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "uvec4", TYPE_UVEC4, { TYPE_UVEC3, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "uvec4", TYPE_UVEC4, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "mat2", TYPE_MAT2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "mat3", TYPE_MAT3, { TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "mat4", TYPE_MAT4, { TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "mat2", TYPE_MAT2, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "mat3", TYPE_MAT3, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "mat4", TYPE_MAT4, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
//conversion scalars
{ "int", TYPE_INT, { TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
{ "int", TYPE_INT, { TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "int", TYPE_INT, { TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "int", TYPE_INT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "float", TYPE_FLOAT, { TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
{ "float", TYPE_FLOAT, { TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "float", TYPE_FLOAT, { TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "float", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "uint", TYPE_UINT, { TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, true },
{ "uint", TYPE_UINT, { TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
{ "uint", TYPE_UINT, { TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "uint", TYPE_UINT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "bool", TYPE_BOOL, { TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
{ "bool", TYPE_BOOL, { TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "bool", TYPE_BOOL, { TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "bool", TYPE_BOOL, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
//conversion vectors
{ "ivec2", TYPE_IVEC2, { TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "ivec2", TYPE_IVEC2, { TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "ivec2", TYPE_IVEC2, { TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "ivec2", TYPE_IVEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "vec2", TYPE_VEC2, { TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "vec2", TYPE_VEC2, { TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "vec2", TYPE_VEC2, { TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "vec2", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "uvec2", TYPE_UVEC2, { TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "uvec2", TYPE_UVEC2, { TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "uvec2", TYPE_UVEC2, { TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "uvec2", TYPE_UVEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "bvec2", TYPE_BVEC2, { TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "bvec2", TYPE_BVEC2, { TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "bvec2", TYPE_BVEC2, { TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "bvec2", TYPE_BVEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "ivec3", TYPE_IVEC3, { TYPE_BVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "ivec3", TYPE_IVEC3, { TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "ivec3", TYPE_IVEC3, { TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "ivec3", TYPE_IVEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "vec3", TYPE_VEC3, { TYPE_BVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "vec3", TYPE_VEC3, { TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "vec3", TYPE_VEC3, { TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "vec3", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "uvec3", TYPE_UVEC3, { TYPE_BVEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "uvec3", TYPE_UVEC3, { TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "uvec3", TYPE_UVEC3, { TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "uvec3", TYPE_UVEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "bvec3", TYPE_BVEC3, { TYPE_BVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "bvec3", TYPE_BVEC3, { TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "bvec3", TYPE_BVEC3, { TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "bvec3", TYPE_BVEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "ivec4", TYPE_IVEC4, { TYPE_BVEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "ivec4", TYPE_IVEC4, { TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "ivec4", TYPE_IVEC4, { TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "ivec4", TYPE_IVEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "vec4", TYPE_VEC4, { TYPE_BVEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "vec4", TYPE_VEC4, { TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "vec4", TYPE_VEC4, { TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "vec4", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "uvec4", TYPE_UVEC4, { TYPE_BVEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "uvec4", TYPE_UVEC4, { TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "uvec4", TYPE_UVEC4, { TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "uvec4", TYPE_UVEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "bvec4", TYPE_BVEC4, { TYPE_BVEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "bvec4", TYPE_BVEC4, { TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "bvec4", TYPE_BVEC4, { TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "bvec4", TYPE_BVEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
//conversion between matrixes
{ "mat2", TYPE_MAT2, { TYPE_MAT3, TYPE_VOID }, TAG_GLOBAL, false },
{ "mat2", TYPE_MAT2, { TYPE_MAT4, TYPE_VOID }, TAG_GLOBAL, false },
{ "mat3", TYPE_MAT3, { TYPE_MAT2, TYPE_VOID }, TAG_GLOBAL, false },
{ "mat3", TYPE_MAT3, { TYPE_MAT4, TYPE_VOID }, TAG_GLOBAL, false },
{ "mat4", TYPE_MAT4, { TYPE_MAT2, TYPE_VOID }, TAG_GLOBAL, false },
{ "mat4", TYPE_MAT4, { TYPE_MAT3, TYPE_VOID }, TAG_GLOBAL, false },
//builtins - trigonometry
{ "radians", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "radians", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "radians", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "radians", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "degrees", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "degrees", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "degrees", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "degrees", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "sin", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "sin", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "sin", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "sin", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "cos", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "cos", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "cos", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "cos", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "tan", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "tan", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "tan", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "tan", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "asin", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "asin", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "asin", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "asin", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "acos", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "acos", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "acos", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "acos", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "atan", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "atan", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "atan", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "atan", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "atan", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "atan", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "atan", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "atan", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "sinh", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "sinh", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "sinh", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "sinh", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "cosh", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "cosh", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "cosh", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "cosh", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "tanh", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "tanh", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "tanh", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "tanh", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "asinh", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "asinh", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "asinh", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "asinh", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "acosh", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "acosh", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "acosh", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "acosh", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "atanh", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "atanh", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "atanh", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "atanh", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
//builtins - exponential
{ "pow", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "pow", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "pow", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "pow", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "exp", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "exp", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "exp", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "exp", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "log", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "log", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "log", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "log", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "exp2", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "exp2", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "exp2", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "exp2", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "log2", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "log2", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "log2", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "log2", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "sqrt", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "sqrt", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "sqrt", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "sqrt", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "inversesqrt", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "inversesqrt", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "inversesqrt", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "inversesqrt", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
//builtins - common
{ "abs", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "abs", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "abs", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "abs", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "abs", TYPE_INT, { TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "abs", TYPE_IVEC2, { TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "abs", TYPE_IVEC3, { TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "abs", TYPE_IVEC4, { TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "sign", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "sign", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "sign", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "sign", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "sign", TYPE_INT, { TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "sign", TYPE_IVEC2, { TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "sign", TYPE_IVEC3, { TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "sign", TYPE_IVEC4, { TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "floor", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "floor", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "floor", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "floor", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "trunc", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "trunc", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "trunc", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "trunc", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "round", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "round", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "round", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "round", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "roundEven", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "roundEven", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "roundEven", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "roundEven", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "ceil", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "ceil", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "ceil", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "ceil", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "fract", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "fract", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "fract", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "fract", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "mod", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "mod", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "mod", TYPE_VEC2, { TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "mod", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "mod", TYPE_VEC3, { TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "mod", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "mod", TYPE_VEC4, { TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "modf", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "modf", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "modf", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "modf", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "min", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "min", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "min", TYPE_VEC2, { TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "min", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "min", TYPE_VEC3, { TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "min", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "min", TYPE_VEC4, { TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "min", TYPE_INT, { TYPE_INT, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "min", TYPE_IVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "min", TYPE_IVEC2, { TYPE_IVEC2, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "min", TYPE_IVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "min", TYPE_IVEC3, { TYPE_IVEC3, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "min", TYPE_IVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "min", TYPE_IVEC4, { TYPE_IVEC4, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "min", TYPE_UINT, { TYPE_UINT, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "min", TYPE_UVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "min", TYPE_UVEC2, { TYPE_UVEC2, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "min", TYPE_UVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "min", TYPE_UVEC3, { TYPE_UVEC3, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "min", TYPE_UVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "min", TYPE_UVEC4, { TYPE_UVEC4, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "max", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "max", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "max", TYPE_VEC2, { TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "max", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "max", TYPE_VEC3, { TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "max", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "max", TYPE_VEC4, { TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "max", TYPE_INT, { TYPE_INT, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "max", TYPE_IVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "max", TYPE_IVEC2, { TYPE_IVEC2, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "max", TYPE_IVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "max", TYPE_IVEC3, { TYPE_IVEC3, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "max", TYPE_IVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "max", TYPE_IVEC4, { TYPE_IVEC4, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "max", TYPE_UINT, { TYPE_UINT, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "max", TYPE_UVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "max", TYPE_UVEC2, { TYPE_UVEC2, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "max", TYPE_UVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "max", TYPE_UVEC3, { TYPE_UVEC3, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "max", TYPE_UVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "max", TYPE_UVEC4, { TYPE_UVEC4, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "clamp", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "clamp", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "clamp", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "clamp", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "clamp", TYPE_VEC2, { TYPE_VEC2, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "clamp", TYPE_VEC3, { TYPE_VEC3, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "clamp", TYPE_VEC4, { TYPE_VEC4, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "clamp", TYPE_INT, { TYPE_INT, TYPE_INT, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "clamp", TYPE_IVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "clamp", TYPE_IVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "clamp", TYPE_IVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "clamp", TYPE_IVEC2, { TYPE_IVEC2, TYPE_INT, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "clamp", TYPE_IVEC3, { TYPE_IVEC3, TYPE_INT, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "clamp", TYPE_IVEC4, { TYPE_IVEC4, TYPE_INT, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
{ "clamp", TYPE_UINT, { TYPE_UINT, TYPE_UINT, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "clamp", TYPE_UVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "clamp", TYPE_UVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "clamp", TYPE_UVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "clamp", TYPE_UVEC2, { TYPE_UVEC2, TYPE_UINT, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "clamp", TYPE_UVEC3, { TYPE_UVEC3, TYPE_UINT, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "clamp", TYPE_UVEC4, { TYPE_UVEC4, TYPE_UINT, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "mix", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "mix", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "mix", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "mix", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "mix", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "mix", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_BVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "mix", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "mix", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "mix", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_BVEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "mix", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "step", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "step", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "step", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "step", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "step", TYPE_VEC2, { TYPE_FLOAT, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "step", TYPE_VEC3, { TYPE_FLOAT, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "step", TYPE_VEC4, { TYPE_FLOAT, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "smoothstep", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "smoothstep", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "smoothstep", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "smoothstep", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "smoothstep", TYPE_VEC2, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "smoothstep", TYPE_VEC3, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "smoothstep", TYPE_VEC4, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "isnan", TYPE_BOOL, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "isnan", TYPE_BVEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "isnan", TYPE_BVEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "isnan", TYPE_BVEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "isinf", TYPE_BOOL, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "isinf", TYPE_BVEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "isinf", TYPE_BVEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "isinf", TYPE_BVEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "floatBitsToInt", TYPE_INT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "floatBitsToInt", TYPE_IVEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "floatBitsToInt", TYPE_IVEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "floatBitsToInt", TYPE_IVEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "floatBitsToUint", TYPE_UINT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "floatBitsToUint", TYPE_UVEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "floatBitsToUint", TYPE_UVEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "floatBitsToUint", TYPE_UVEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "intBitsToFloat", TYPE_FLOAT, { TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
{ "intBitsToFloat", TYPE_VEC2, { TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "intBitsToFloat", TYPE_VEC3, { TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "intBitsToFloat", TYPE_VEC4, { TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "uintBitsToFloat", TYPE_FLOAT, { TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
{ "uintBitsToFloat", TYPE_VEC2, { TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "uintBitsToFloat", TYPE_VEC3, { TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "uintBitsToFloat", TYPE_VEC4, { TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
//builtins - geometric
{ "length", TYPE_FLOAT, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "length", TYPE_FLOAT, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "length", TYPE_FLOAT, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "distance", TYPE_FLOAT, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "distance", TYPE_FLOAT, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "distance", TYPE_FLOAT, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "dot", TYPE_FLOAT, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "dot", TYPE_FLOAT, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "dot", TYPE_FLOAT, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "cross", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "normalize", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "normalize", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "normalize", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "reflect", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "refract", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "faceforward", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "faceforward", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "faceforward", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "matrixCompMult", TYPE_MAT2, { TYPE_MAT2, TYPE_MAT2, TYPE_VOID }, TAG_GLOBAL, false },
{ "matrixCompMult", TYPE_MAT3, { TYPE_MAT3, TYPE_MAT3, TYPE_VOID }, TAG_GLOBAL, false },
{ "matrixCompMult", TYPE_MAT4, { TYPE_MAT4, TYPE_MAT4, TYPE_VOID }, TAG_GLOBAL, false },
{ "outerProduct", TYPE_MAT2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "outerProduct", TYPE_MAT3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "outerProduct", TYPE_MAT4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "transpose", TYPE_MAT2, { TYPE_MAT2, TYPE_VOID }, TAG_GLOBAL, false },
{ "transpose", TYPE_MAT3, { TYPE_MAT3, TYPE_VOID }, TAG_GLOBAL, false },
{ "transpose", TYPE_MAT4, { TYPE_MAT4, TYPE_VOID }, TAG_GLOBAL, false },
{ "determinant", TYPE_FLOAT, { TYPE_MAT2, TYPE_VOID }, TAG_GLOBAL, false },
{ "determinant", TYPE_FLOAT, { TYPE_MAT3, TYPE_VOID }, TAG_GLOBAL, false },
{ "determinant", TYPE_FLOAT, { TYPE_MAT4, TYPE_VOID }, TAG_GLOBAL, false },
{ "inverse", TYPE_MAT2, { TYPE_MAT2, TYPE_VOID }, TAG_GLOBAL, false },
{ "inverse", TYPE_MAT3, { TYPE_MAT3, TYPE_VOID }, TAG_GLOBAL, false },
{ "inverse", TYPE_MAT4, { TYPE_MAT4, TYPE_VOID }, TAG_GLOBAL, false },
{ "lessThan", TYPE_BVEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "lessThan", TYPE_BVEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "lessThan", TYPE_BVEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "lessThan", TYPE_BVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "lessThan", TYPE_BVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "lessThan", TYPE_BVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "lessThan", TYPE_BVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "lessThan", TYPE_BVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "lessThan", TYPE_BVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "greaterThan", TYPE_BVEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "greaterThan", TYPE_BVEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "greaterThan", TYPE_BVEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "greaterThan", TYPE_BVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "greaterThan", TYPE_BVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "greaterThan", TYPE_BVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "greaterThan", TYPE_BVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "greaterThan", TYPE_BVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "greaterThan", TYPE_BVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "lessThanEqual", TYPE_BVEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "lessThanEqual", TYPE_BVEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "lessThanEqual", TYPE_BVEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "lessThanEqual", TYPE_BVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "lessThanEqual", TYPE_BVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "lessThanEqual", TYPE_BVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "lessThanEqual", TYPE_BVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "lessThanEqual", TYPE_BVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "lessThanEqual", TYPE_BVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "greaterThanEqual", TYPE_BVEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "greaterThanEqual", TYPE_BVEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "greaterThanEqual", TYPE_BVEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "greaterThanEqual", TYPE_BVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "greaterThanEqual", TYPE_BVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "greaterThanEqual", TYPE_BVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "greaterThanEqual", TYPE_BVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "greaterThanEqual", TYPE_BVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "greaterThanEqual", TYPE_BVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "equal", TYPE_BVEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "equal", TYPE_BVEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "equal", TYPE_BVEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "equal", TYPE_BVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "equal", TYPE_BVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "equal", TYPE_BVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "equal", TYPE_BVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "equal", TYPE_BVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "equal", TYPE_BVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "equal", TYPE_BVEC2, { TYPE_BVEC2, TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "equal", TYPE_BVEC3, { TYPE_BVEC3, TYPE_BVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "equal", TYPE_BVEC4, { TYPE_BVEC4, TYPE_BVEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "notEqual", TYPE_BVEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "notEqual", TYPE_BVEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "notEqual", TYPE_BVEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "notEqual", TYPE_BVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "notEqual", TYPE_BVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "notEqual", TYPE_BVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "notEqual", TYPE_BVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "notEqual", TYPE_BVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "notEqual", TYPE_BVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "notEqual", TYPE_BVEC2, { TYPE_BVEC2, TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "notEqual", TYPE_BVEC3, { TYPE_BVEC3, TYPE_BVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "notEqual", TYPE_BVEC4, { TYPE_BVEC4, TYPE_BVEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "any", TYPE_BOOL, { TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "any", TYPE_BOOL, { TYPE_BVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "any", TYPE_BOOL, { TYPE_BVEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "all", TYPE_BOOL, { TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "all", TYPE_BOOL, { TYPE_BVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "all", TYPE_BOOL, { TYPE_BVEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "not", TYPE_BVEC2, { TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "not", TYPE_BVEC3, { TYPE_BVEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "not", TYPE_BVEC4, { TYPE_BVEC4, TYPE_VOID }, TAG_GLOBAL, false },
//builtins - texture
{ "textureSize", TYPE_IVEC2, { TYPE_SAMPLER2D, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureSize", TYPE_IVEC2, { TYPE_ISAMPLER2D, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureSize", TYPE_IVEC2, { TYPE_USAMPLER2D, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureSize", TYPE_IVEC3, { TYPE_SAMPLER2DARRAY, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureSize", TYPE_IVEC3, { TYPE_ISAMPLER2DARRAY, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureSize", TYPE_IVEC3, { TYPE_USAMPLER2DARRAY, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureSize", TYPE_IVEC3, { TYPE_SAMPLER3D, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureSize", TYPE_IVEC3, { TYPE_ISAMPLER3D, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureSize", TYPE_IVEC3, { TYPE_USAMPLER3D, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureSize", TYPE_IVEC2, { TYPE_SAMPLERCUBE, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureSize", TYPE_IVEC2, { TYPE_SAMPLERCUBEARRAY, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
{ "texture", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "texture", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "texture", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "texture", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "texture", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "texture", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "texture", TYPE_VEC4, { TYPE_SAMPLER2DARRAY, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "texture", TYPE_VEC4, { TYPE_SAMPLER2DARRAY, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "texture", TYPE_UVEC4, { TYPE_USAMPLER2DARRAY, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "texture", TYPE_UVEC4, { TYPE_USAMPLER2DARRAY, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "texture", TYPE_IVEC4, { TYPE_ISAMPLER2DARRAY, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "texture", TYPE_IVEC4, { TYPE_ISAMPLER2DARRAY, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "texture", TYPE_VEC4, { TYPE_SAMPLER3D, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "texture", TYPE_VEC4, { TYPE_SAMPLER3D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "texture", TYPE_UVEC4, { TYPE_USAMPLER3D, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "texture", TYPE_UVEC4, { TYPE_USAMPLER3D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "texture", TYPE_IVEC4, { TYPE_ISAMPLER3D, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "texture", TYPE_IVEC4, { TYPE_ISAMPLER3D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "texture", TYPE_VEC4, { TYPE_SAMPLERCUBE, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "texture", TYPE_VEC4, { TYPE_SAMPLERCUBE, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "texture", TYPE_VEC4, { TYPE_SAMPLERCUBEARRAY, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ "texture", TYPE_VEC4, { TYPE_SAMPLERCUBEARRAY, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "textureProj", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProj", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProj", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProj", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProj", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProj", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProj", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProj", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProj", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProj", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProj", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProj", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProj", TYPE_VEC4, { TYPE_SAMPLER3D, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProj", TYPE_VEC4, { TYPE_SAMPLER3D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProj", TYPE_IVEC4, { TYPE_ISAMPLER3D, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProj", TYPE_IVEC4, { TYPE_ISAMPLER3D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProj", TYPE_UVEC4, { TYPE_USAMPLER3D, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProj", TYPE_UVEC4, { TYPE_USAMPLER3D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureLod", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "textureLod", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureLod", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureLod", TYPE_VEC4, { TYPE_SAMPLER2DARRAY, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "textureLod", TYPE_IVEC4, { TYPE_ISAMPLER2DARRAY, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureLod", TYPE_UVEC4, { TYPE_USAMPLER2DARRAY, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureLod", TYPE_VEC4, { TYPE_SAMPLER3D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "textureLod", TYPE_IVEC4, { TYPE_ISAMPLER3D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureLod", TYPE_UVEC4, { TYPE_USAMPLER3D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureLod", TYPE_VEC4, { TYPE_SAMPLERCUBE, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "textureLod", TYPE_VEC4, { TYPE_SAMPLERCUBEARRAY, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "texelFetch", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_IVEC2, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
{ "texelFetch", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_IVEC2, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
{ "texelFetch", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_IVEC2, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
{ "texelFetch", TYPE_VEC4, { TYPE_SAMPLER2DARRAY, TYPE_IVEC3, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
{ "texelFetch", TYPE_IVEC4, { TYPE_ISAMPLER2DARRAY, TYPE_IVEC3, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
{ "texelFetch", TYPE_UVEC4, { TYPE_USAMPLER2DARRAY, TYPE_IVEC3, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
{ "texelFetch", TYPE_VEC4, { TYPE_SAMPLER3D, TYPE_IVEC3, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
{ "texelFetch", TYPE_IVEC4, { TYPE_ISAMPLER3D, TYPE_IVEC3, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
{ "texelFetch", TYPE_UVEC4, { TYPE_USAMPLER3D, TYPE_IVEC3, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProjLod", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProjLod", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProjLod", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProjLod", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProjLod", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProjLod", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProjLod", TYPE_VEC4, { TYPE_SAMPLER3D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProjLod", TYPE_IVEC4, { TYPE_ISAMPLER3D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureProjLod", TYPE_UVEC4, { TYPE_USAMPLER3D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureGrad", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureGrad", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureGrad", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureGrad", TYPE_VEC4, { TYPE_SAMPLER2DARRAY, TYPE_VEC3, TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureGrad", TYPE_IVEC4, { TYPE_ISAMPLER2DARRAY, TYPE_VEC3, TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureGrad", TYPE_UVEC4, { TYPE_USAMPLER2DARRAY, TYPE_VEC3, TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureGrad", TYPE_VEC4, { TYPE_SAMPLER3D, TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureGrad", TYPE_IVEC4, { TYPE_ISAMPLER3D, TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureGrad", TYPE_UVEC4, { TYPE_USAMPLER3D, TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureGrad", TYPE_VEC4, { TYPE_SAMPLERCUBE, TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "textureGrad", TYPE_VEC4, { TYPE_SAMPLERCUBEARRAY, TYPE_VEC4, TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "dFdx", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "dFdx", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "dFdx", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "dFdx", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "dFdy", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "dFdy", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "dFdy", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "dFdy", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
{ "fwidth", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
{ "fwidth", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
{ "fwidth", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
{ "fwidth", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
//sub-functions
//array
{ "length", TYPE_INT, { TYPE_VOID }, TAG_ARRAY, true },
// modern functions
{ "fma", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
{ "fma", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
{ "fma", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
{ "fma", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
{ nullptr, TYPE_VOID, { TYPE_VOID }, TAG_GLOBAL, false }
};
const ShaderLanguage::BuiltinFuncOutArgs ShaderLanguage::builtin_func_out_args[] = {
//constructors
{ "modf", 1 },
{ nullptr, 0 }
};
bool ShaderLanguage::_validate_function_call(BlockNode *p_block, const FunctionInfo &p_function_info, OperatorNode *p_func, DataType *r_ret_type, StringName *r_ret_type_str) {
ERR_FAIL_COND_V(p_func->op != OP_CALL && p_func->op != OP_CONSTRUCT, false);
Vector<DataType> args;
Vector<StringName> args2;
ERR_FAIL_COND_V(p_func->arguments[0]->type != Node::TYPE_VARIABLE, false);
StringName name = static_cast<VariableNode *>(p_func->arguments[0])->name.operator String();
for (int i = 1; i < p_func->arguments.size(); i++) {
args.push_back(p_func->arguments[i]->get_datatype());
args2.push_back(p_func->arguments[i]->get_datatype_name());
}
int argcount = args.size();
if (p_function_info.stage_functions.has(name)) {
//stage based function
const StageFunctionInfo &sf = p_function_info.stage_functions[name];
if (argcount != sf.arguments.size()) {
_set_error(vformat("Invalid number of arguments when calling stage function '%s', which expects %d arguments.", String(name), sf.arguments.size()));
return false;
}
//validate arguments
for (int i = 0; i < argcount; i++) {
if (args[i] != sf.arguments[i].type) {
_set_error(vformat("Invalid argument type when calling stage function '%s', type expected is '%s'.", String(name), String(get_datatype_name(sf.arguments[i].type))));
return false;
}
}
if (r_ret_type) {
*r_ret_type = sf.return_type;
}
if (r_ret_type_str) {
*r_ret_type_str = "";
}
return true;
}
bool failed_builtin = false;
bool unsupported_builtin = false;
int builtin_idx = 0;
if (argcount <= 4) {
// test builtins
int idx = 0;
while (builtin_func_defs[idx].name) {
if (completion_class != builtin_func_defs[idx].tag) {
idx++;
continue;
}
if (name == builtin_func_defs[idx].name) {
failed_builtin = true;
bool fail = false;
for (int i = 0; i < argcount; i++) {
if (get_scalar_type(args[i]) == args[i] && p_func->arguments[i + 1]->type == Node::TYPE_CONSTANT && convert_constant(static_cast<ConstantNode *>(p_func->arguments[i + 1]), builtin_func_defs[idx].args[i])) {
//all good, but needs implicit conversion later
} else if (args[i] != builtin_func_defs[idx].args[i]) {
fail = true;
break;
}
}
if (!fail) {
if (RenderingServer::get_singleton()->is_low_end()) {
if (builtin_func_defs[idx].high_end) {
fail = true;
unsupported_builtin = true;
builtin_idx = idx;
}
}
}
if (!fail && argcount < 4 && builtin_func_defs[idx].args[argcount] != TYPE_VOID) {
fail = true; //make sure the number of arguments matches
}
if (!fail) {
//make sure its not an out argument used in the wrong way
int outarg_idx = 0;
while (builtin_func_out_args[outarg_idx].name) {
if (String(name) == builtin_func_out_args[outarg_idx].name) {
int arg_idx = builtin_func_out_args[outarg_idx].argument;
if (arg_idx < argcount) {
if (p_func->arguments[arg_idx + 1]->type != Node::TYPE_VARIABLE && p_func->arguments[arg_idx + 1]->type != Node::TYPE_MEMBER && p_func->arguments[arg_idx + 1]->type != Node::TYPE_ARRAY) {
_set_error("Argument " + itos(arg_idx + 1) + " of function '" + String(name) + "' is not a variable, array or member.");
return false;
}
if (p_func->arguments[arg_idx + 1]->type == Node::TYPE_ARRAY) {
ArrayNode *mn = static_cast<ArrayNode *>(p_func->arguments[arg_idx + 1]);
if (mn->is_const) {
fail = true;
}
} else if (p_func->arguments[arg_idx + 1]->type == Node::TYPE_MEMBER) {
MemberNode *mn = static_cast<MemberNode *>(p_func->arguments[arg_idx + 1]);
if (mn->basetype_const) {
fail = true;
}
} else { // TYPE_VARIABLE
VariableNode *vn = static_cast<VariableNode *>(p_func->arguments[arg_idx + 1]);
if (vn->is_const) {
fail = true;
} else {
StringName varname = vn->name;
if (shader->uniforms.has(varname)) {
fail = true;
} else {
if (p_function_info.built_ins.has(varname)) {
BuiltInInfo info = p_function_info.built_ins[varname];
if (info.constant) {
fail = true;
}
}
}
}
}
if (fail) {
_set_error(vformat("Constant value cannot be passed for '%s' parameter!", "out"));
return false;
}
StringName var_name;
if (p_func->arguments[arg_idx + 1]->type == Node::TYPE_ARRAY) {
var_name = static_cast<const ArrayNode *>(p_func->arguments[arg_idx + 1])->name;
} else if (p_func->arguments[arg_idx + 1]->type == Node::TYPE_MEMBER) {
Node *n = static_cast<const MemberNode *>(p_func->arguments[arg_idx + 1])->owner;
while (n->type == Node::TYPE_MEMBER) {
n = static_cast<const MemberNode *>(n)->owner;
}
if (n->type != Node::TYPE_VARIABLE && n->type != Node::TYPE_ARRAY) {
_set_error("Argument " + itos(arg_idx + 1) + " of function '" + String(name) + "' is not a variable, array or member.");
return false;
}
if (n->type == Node::TYPE_VARIABLE) {
var_name = static_cast<const VariableNode *>(n)->name;
} else { // TYPE_ARRAY
var_name = static_cast<const ArrayNode *>(n)->name;
}
} else { // TYPE_VARIABLE
var_name = static_cast<const VariableNode *>(p_func->arguments[arg_idx + 1])->name;
}
const BlockNode *b = p_block;
bool valid = false;
while (b) {
if (b->variables.has(var_name) || p_function_info.built_ins.has(var_name)) {
valid = true;
break;
}
if (b->parent_function) {
for (int i = 0; i < b->parent_function->arguments.size(); i++) {
if (b->parent_function->arguments[i].name == var_name) {
valid = true;
break;
}
}
}
b = b->parent_block;
}
if (!valid) {
_set_error("Argument " + itos(arg_idx + 1) + " of function '" + String(name) + "' can only take a local variable, array or member.");
return false;
}
}
}
outarg_idx++;
}
//implicitly convert values if possible
for (int i = 0; i < argcount; i++) {
if (get_scalar_type(args[i]) != args[i] || args[i] == builtin_func_defs[idx].args[i] || p_func->arguments[i + 1]->type != Node::TYPE_CONSTANT) {
//can't do implicit conversion here
continue;
}
//this is an implicit conversion
ConstantNode *constant = static_cast<ConstantNode *>(p_func->arguments[i + 1]);
ConstantNode *conversion = alloc_node<ConstantNode>();
conversion->datatype = builtin_func_defs[idx].args[i];
conversion->values.resize(1);
convert_constant(constant, builtin_func_defs[idx].args[i], conversion->values.ptrw());
p_func->arguments.write[i + 1] = conversion;
}
if (r_ret_type) {
*r_ret_type = builtin_func_defs[idx].rettype;
}
return true;
}
}
idx++;
}
}
if (unsupported_builtin) {
String arglist = "";
for (int i = 0; i < argcount; i++) {
if (i > 0) {
arglist += ", ";
}
arglist += get_datatype_name(builtin_func_defs[builtin_idx].args[i]);
}
String err = "Built-in function \"" + String(name) + "(" + arglist + ")\" is supported only on high-end platform!";
_set_error(err);
return false;
}
if (failed_builtin) {
String err = "Invalid arguments for built-in function: " + String(name) + "(";
for (int i = 0; i < argcount; i++) {
if (i > 0) {
err += ",";
}
String arg_name;
if (args[i] == TYPE_STRUCT) {
arg_name = args2[i];
} else {
arg_name = get_datatype_name(args[i]);
}
err += arg_name;
}
err += ")";
_set_error(err);
return false;
}
// try existing functions..
StringName exclude_function;
BlockNode *block = p_block;
while (block) {
if (block->parent_function) {
exclude_function = block->parent_function->name;
}
block = block->parent_block;
}
if (name == exclude_function) {
_set_error("Recursion is not allowed");
return false;
}
int last_arg_count = 0;
String arg_list = "";
for (int i = 0; i < shader->functions.size(); i++) {
if (name != shader->functions[i].name) {
continue;
}
if (!shader->functions[i].callable) {
_set_error("Function '" + String(name) + " can't be called from source code.");
return false;
}
FunctionNode *pfunc = shader->functions[i].function;
if (arg_list == "") {
for (int j = 0; j < pfunc->arguments.size(); j++) {
if (j > 0) {
arg_list += ", ";
}
String func_arg_name;
if (pfunc->arguments[j].type == TYPE_STRUCT) {
func_arg_name = pfunc->arguments[j].type_str;
} else {
func_arg_name = get_datatype_name(pfunc->arguments[j].type);
}
arg_list += func_arg_name;
}
}
if (pfunc->arguments.size() != args.size()) {
last_arg_count = pfunc->arguments.size();
continue;
}
bool fail = false;
for (int j = 0; j < args.size(); j++) {
if (get_scalar_type(args[j]) == args[j] && p_func->arguments[j + 1]->type == Node::TYPE_CONSTANT && convert_constant(static_cast<ConstantNode *>(p_func->arguments[j + 1]), pfunc->arguments[j].type)) {
//all good, but it needs implicit conversion later
} else if (args[j] != pfunc->arguments[j].type || (args[j] == TYPE_STRUCT && args2[j] != pfunc->arguments[j].type_str)) {
String func_arg_name;
if (pfunc->arguments[j].type == TYPE_STRUCT) {
func_arg_name = pfunc->arguments[j].type_str;
} else {
func_arg_name = get_datatype_name(pfunc->arguments[j].type);
}
String arg_name;
if (args[j] == TYPE_STRUCT) {
arg_name = args2[j];
} else {
arg_name = get_datatype_name(args[j]);
}
_set_error(vformat("Invalid argument for \"%s(%s)\" function: argument %s should be %s but is %s.", String(name), arg_list, j + 1, func_arg_name, arg_name));
fail = true;
break;
}
}
if (!fail) {
//implicitly convert values if possible
for (int k = 0; k < args.size(); k++) {
if (get_scalar_type(args[k]) != args[k] || args[k] == pfunc->arguments[k].type || p_func->arguments[k + 1]->type != Node::TYPE_CONSTANT) {
//can't do implicit conversion here
continue;
}
//this is an implicit conversion
ConstantNode *constant = static_cast<ConstantNode *>(p_func->arguments[k + 1]);
ConstantNode *conversion = alloc_node<ConstantNode>();
conversion->datatype = pfunc->arguments[k].type;
conversion->values.resize(1);
convert_constant(constant, pfunc->arguments[k].type, conversion->values.ptrw());
p_func->arguments.write[k + 1] = conversion;
}
if (r_ret_type) {
*r_ret_type = pfunc->return_type;
if (pfunc->return_type == TYPE_STRUCT) {
*r_ret_type_str = pfunc->return_struct_name;
}
}
return true;
}
}
if (last_arg_count > args.size()) {
_set_error(vformat("Too few arguments for \"%s(%s)\" call. Expected at least %s but received %s.", String(name), arg_list, last_arg_count, args.size()));
} else if (last_arg_count < args.size()) {
_set_error(vformat("Too many arguments for \"%s(%s)\" call. Expected at most %s but received %s.", String(name), arg_list, last_arg_count, args.size()));
}
return false;
}
bool ShaderLanguage::_compare_datatypes_in_nodes(Node *a, Node *b) const {
if (a->get_datatype() != b->get_datatype()) {
return false;
}
if (a->get_datatype() == TYPE_STRUCT || b->get_datatype() == TYPE_STRUCT) {
if (a->get_datatype_name() != b->get_datatype_name()) {
return false;
}
}
return true;
}
bool ShaderLanguage::_parse_function_arguments(BlockNode *p_block, const FunctionInfo &p_function_info, OperatorNode *p_func, int *r_complete_arg) {
TkPos pos = _get_tkpos();
Token tk = _get_token();
if (tk.type == TK_PARENTHESIS_CLOSE) {
return true;
}
_set_tkpos(pos);
while (true) {
if (r_complete_arg) {
pos = _get_tkpos();
tk = _get_token();
if (tk.type == TK_CURSOR) {
*r_complete_arg = p_func->arguments.size() - 1;
} else {
_set_tkpos(pos);
}
}
Node *arg = _parse_and_reduce_expression(p_block, p_function_info);
if (!arg) {
return false;
}
p_func->arguments.push_back(arg);
tk = _get_token();
if (tk.type == TK_PARENTHESIS_CLOSE) {
return true;
} else if (tk.type != TK_COMMA) {
// something is broken
_set_error("Expected ',' or ')' after argument");
return false;
}
}
return true;
}
bool ShaderLanguage::is_token_operator(TokenType p_type) {
return (p_type == TK_OP_EQUAL ||
p_type == TK_OP_NOT_EQUAL ||
p_type == TK_OP_LESS ||
p_type == TK_OP_LESS_EQUAL ||
p_type == TK_OP_GREATER ||
p_type == TK_OP_GREATER_EQUAL ||
p_type == TK_OP_AND ||
p_type == TK_OP_OR ||
p_type == TK_OP_NOT ||
p_type == TK_OP_ADD ||
p_type == TK_OP_SUB ||
p_type == TK_OP_MUL ||
p_type == TK_OP_DIV ||
p_type == TK_OP_MOD ||
p_type == TK_OP_SHIFT_LEFT ||
p_type == TK_OP_SHIFT_RIGHT ||
p_type == TK_OP_ASSIGN ||
p_type == TK_OP_ASSIGN_ADD ||
p_type == TK_OP_ASSIGN_SUB ||
p_type == TK_OP_ASSIGN_MUL ||
p_type == TK_OP_ASSIGN_DIV ||
p_type == TK_OP_ASSIGN_MOD ||
p_type == TK_OP_ASSIGN_SHIFT_LEFT ||
p_type == TK_OP_ASSIGN_SHIFT_RIGHT ||
p_type == TK_OP_ASSIGN_BIT_AND ||
p_type == TK_OP_ASSIGN_BIT_OR ||
p_type == TK_OP_ASSIGN_BIT_XOR ||
p_type == TK_OP_BIT_AND ||
p_type == TK_OP_BIT_OR ||
p_type == TK_OP_BIT_XOR ||
p_type == TK_OP_BIT_INVERT ||
p_type == TK_OP_INCREMENT ||
p_type == TK_OP_DECREMENT ||
p_type == TK_QUESTION ||
p_type == TK_COLON);
}
bool ShaderLanguage::convert_constant(ConstantNode *p_constant, DataType p_to_type, ConstantNode::Value *p_value) {
if (p_constant->datatype == p_to_type) {
if (p_value) {
for (int i = 0; i < p_constant->values.size(); i++) {
p_value[i] = p_constant->values[i];
}
}
return true;
} else if (p_constant->datatype == TYPE_INT && p_to_type == TYPE_FLOAT) {
if (p_value) {
p_value->real = p_constant->values[0].sint;
}
return true;
} else if (p_constant->datatype == TYPE_UINT && p_to_type == TYPE_FLOAT) {
if (p_value) {
p_value->real = p_constant->values[0].uint;
}
return true;
} else if (p_constant->datatype == TYPE_INT && p_to_type == TYPE_UINT) {
if (p_constant->values[0].sint < 0) {
return false;
}
if (p_value) {
p_value->uint = p_constant->values[0].sint;
}
return true;
} else if (p_constant->datatype == TYPE_UINT && p_to_type == TYPE_INT) {
if (p_constant->values[0].uint > 0x7FFFFFFF) {
return false;
}
if (p_value) {
p_value->sint = p_constant->values[0].uint;
}
return true;
} else {
return false;
}
}
bool ShaderLanguage::is_scalar_type(DataType p_type) {
return p_type == TYPE_BOOL || p_type == TYPE_INT || p_type == TYPE_UINT || p_type == TYPE_FLOAT;
}
bool ShaderLanguage::is_sampler_type(DataType p_type) {
return p_type == TYPE_SAMPLER2D ||
p_type == TYPE_ISAMPLER2D ||
p_type == TYPE_USAMPLER2D ||
p_type == TYPE_SAMPLER2DARRAY ||
p_type == TYPE_ISAMPLER2DARRAY ||
p_type == TYPE_USAMPLER2DARRAY ||
p_type == TYPE_SAMPLER3D ||
p_type == TYPE_ISAMPLER3D ||
p_type == TYPE_USAMPLER3D ||
p_type == TYPE_SAMPLERCUBE ||
p_type == TYPE_SAMPLERCUBEARRAY;
}
Variant ShaderLanguage::constant_value_to_variant(const Vector<ShaderLanguage::ConstantNode::Value> &p_value, DataType p_type, ShaderLanguage::ShaderNode::Uniform::Hint p_hint) {
if (p_value.size() > 0) {
Variant value;
switch (p_type) {
case ShaderLanguage::TYPE_BOOL:
value = Variant(p_value[0].boolean);
break;
case ShaderLanguage::TYPE_BVEC2:
case ShaderLanguage::TYPE_BVEC3:
case ShaderLanguage::TYPE_BVEC4:
case ShaderLanguage::TYPE_INT:
value = Variant(p_value[0].sint);
break;
case ShaderLanguage::TYPE_IVEC2:
value = Variant(Vector2(p_value[0].sint, p_value[1].sint));
break;
case ShaderLanguage::TYPE_IVEC3:
value = Variant(Vector3(p_value[0].sint, p_value[1].sint, p_value[2].sint));
break;
case ShaderLanguage::TYPE_IVEC4:
value = Variant(Plane(p_value[0].sint, p_value[1].sint, p_value[2].sint, p_value[3].sint));
break;
case ShaderLanguage::TYPE_UINT:
value = Variant(p_value[0].uint);
break;
case ShaderLanguage::TYPE_UVEC2:
value = Variant(Vector2(p_value[0].uint, p_value[1].uint));
break;
case ShaderLanguage::TYPE_UVEC3:
value = Variant(Vector3(p_value[0].uint, p_value[1].uint, p_value[2].uint));
break;
case ShaderLanguage::TYPE_UVEC4:
value = Variant(Plane(p_value[0].uint, p_value[1].uint, p_value[2].uint, p_value[3].uint));
break;
case ShaderLanguage::TYPE_FLOAT:
value = Variant(p_value[0].real);
break;
case ShaderLanguage::TYPE_VEC2:
value = Variant(Vector2(p_value[0].real, p_value[1].real));
break;
case ShaderLanguage::TYPE_VEC3:
value = Variant(Vector3(p_value[0].real, p_value[1].real, p_value[2].real));
break;
case ShaderLanguage::TYPE_VEC4:
if (p_hint == ShaderLanguage::ShaderNode::Uniform::HINT_COLOR) {
value = Variant(Color(p_value[0].real, p_value[1].real, p_value[2].real, p_value[3].real));
} else {
value = Variant(Plane(p_value[0].real, p_value[1].real, p_value[2].real, p_value[3].real));
}
break;
case ShaderLanguage::TYPE_MAT2:
value = Variant(Transform2D(p_value[0].real, p_value[2].real, p_value[1].real, p_value[3].real, 0.0, 0.0));
break;
case ShaderLanguage::TYPE_MAT3: {
Basis p;
p[0][0] = p_value[0].real;
p[0][1] = p_value[1].real;
p[0][2] = p_value[2].real;
p[1][0] = p_value[3].real;
p[1][1] = p_value[4].real;
p[1][2] = p_value[5].real;
p[2][0] = p_value[6].real;
p[2][1] = p_value[7].real;
p[2][2] = p_value[8].real;
value = Variant(p);
break;
}
case ShaderLanguage::TYPE_MAT4: {
Basis p;
p[0][0] = p_value[0].real;
p[0][1] = p_value[1].real;
p[0][2] = p_value[2].real;
p[1][0] = p_value[4].real;
p[1][1] = p_value[5].real;
p[1][2] = p_value[6].real;
p[2][0] = p_value[8].real;
p[2][1] = p_value[9].real;
p[2][2] = p_value[10].real;
Transform t = Transform(p, Vector3(p_value[3].real, p_value[7].real, p_value[11].real));
value = Variant(t);
break;
}
case ShaderLanguage::TYPE_ISAMPLER2DARRAY:
case ShaderLanguage::TYPE_ISAMPLER2D:
case ShaderLanguage::TYPE_ISAMPLER3D:
case ShaderLanguage::TYPE_SAMPLER2DARRAY:
case ShaderLanguage::TYPE_SAMPLER2D:
case ShaderLanguage::TYPE_SAMPLER3D:
case ShaderLanguage::TYPE_USAMPLER2DARRAY:
case ShaderLanguage::TYPE_USAMPLER2D:
case ShaderLanguage::TYPE_USAMPLER3D:
case ShaderLanguage::TYPE_SAMPLERCUBE:
case ShaderLanguage::TYPE_SAMPLERCUBEARRAY: {
// Texture types, likely not relevant here.
break;
}
case ShaderLanguage::TYPE_STRUCT:
break;
case ShaderLanguage::TYPE_VOID:
break;
case ShaderLanguage::TYPE_MAX:
break;
}
return value;
}
return Variant();
}
PropertyInfo ShaderLanguage::uniform_to_property_info(const ShaderNode::Uniform &p_uniform) {
PropertyInfo pi;
switch (p_uniform.type) {
case ShaderLanguage::TYPE_VOID:
pi.type = Variant::NIL;
break;
case ShaderLanguage::TYPE_BOOL:
pi.type = Variant::BOOL;
break;
case ShaderLanguage::TYPE_BVEC2:
pi.type = Variant::INT;
pi.hint = PROPERTY_HINT_FLAGS;
pi.hint_string = "x,y";
break;
case ShaderLanguage::TYPE_BVEC3:
pi.type = Variant::INT;
pi.hint = PROPERTY_HINT_FLAGS;
pi.hint_string = "x,y,z";
break;
case ShaderLanguage::TYPE_BVEC4:
pi.type = Variant::INT;
pi.hint = PROPERTY_HINT_FLAGS;
pi.hint_string = "x,y,z,w";
break;
case ShaderLanguage::TYPE_UINT:
case ShaderLanguage::TYPE_INT: {
pi.type = Variant::INT;
if (p_uniform.hint == ShaderLanguage::ShaderNode::Uniform::HINT_RANGE) {
pi.hint = PROPERTY_HINT_RANGE;
pi.hint_string = rtos(p_uniform.hint_range[0]) + "," + rtos(p_uniform.hint_range[1]) + "," + rtos(p_uniform.hint_range[2]);
}
} break;
case ShaderLanguage::TYPE_IVEC2:
case ShaderLanguage::TYPE_IVEC3:
case ShaderLanguage::TYPE_IVEC4:
case ShaderLanguage::TYPE_UVEC2:
case ShaderLanguage::TYPE_UVEC3:
case ShaderLanguage::TYPE_UVEC4: {
pi.type = Variant::PACKED_INT32_ARRAY;
} break;
case ShaderLanguage::TYPE_FLOAT: {
pi.type = Variant::FLOAT;
if (p_uniform.hint == ShaderLanguage::ShaderNode::Uniform::HINT_RANGE) {
pi.hint = PROPERTY_HINT_RANGE;
pi.hint_string = rtos(p_uniform.hint_range[0]) + "," + rtos(p_uniform.hint_range[1]) + "," + rtos(p_uniform.hint_range[2]);
}
} break;
case ShaderLanguage::TYPE_VEC2:
pi.type = Variant::VECTOR2;
break;
case ShaderLanguage::TYPE_VEC3:
pi.type = Variant::VECTOR3;
break;
case ShaderLanguage::TYPE_VEC4: {
if (p_uniform.hint == ShaderLanguage::ShaderNode::Uniform::HINT_COLOR) {
pi.type = Variant::COLOR;
} else {
pi.type = Variant::PLANE;
}
} break;
case ShaderLanguage::TYPE_MAT2:
pi.type = Variant::TRANSFORM2D;
break;
case ShaderLanguage::TYPE_MAT3:
pi.type = Variant::BASIS;
break;
case ShaderLanguage::TYPE_MAT4:
pi.type = Variant::TRANSFORM;
break;
case ShaderLanguage::TYPE_SAMPLER2D:
case ShaderLanguage::TYPE_ISAMPLER2D:
case ShaderLanguage::TYPE_USAMPLER2D: {
pi.type = Variant::OBJECT;
pi.hint = PROPERTY_HINT_RESOURCE_TYPE;
pi.hint_string = "Texture2D";
} break;
case ShaderLanguage::TYPE_SAMPLER2DARRAY:
case ShaderLanguage::TYPE_ISAMPLER2DARRAY:
case ShaderLanguage::TYPE_USAMPLER2DARRAY: {
pi.type = Variant::OBJECT;
pi.hint = PROPERTY_HINT_RESOURCE_TYPE;
pi.hint_string = "TextureLayered";
} break;
case ShaderLanguage::TYPE_SAMPLER3D:
case ShaderLanguage::TYPE_ISAMPLER3D:
case ShaderLanguage::TYPE_USAMPLER3D: {
pi.type = Variant::OBJECT;
pi.hint = PROPERTY_HINT_RESOURCE_TYPE;
pi.hint_string = "Texture3D";
} break;
case ShaderLanguage::TYPE_SAMPLERCUBE:
case ShaderLanguage::TYPE_SAMPLERCUBEARRAY: {
pi.type = Variant::OBJECT;
pi.hint = PROPERTY_HINT_RESOURCE_TYPE;
pi.hint_string = "TextureLayered";
} break;
case ShaderLanguage::TYPE_STRUCT: {
// FIXME: Implement this.
} break;
case ShaderLanguage::TYPE_MAX:
break;
}
return pi;
}
uint32_t ShaderLanguage::get_type_size(DataType p_type) {
switch (p_type) {
case TYPE_VOID:
return 0;
case TYPE_BOOL:
case TYPE_INT:
case TYPE_UINT:
case TYPE_FLOAT:
return 4;
case TYPE_BVEC2:
case TYPE_IVEC2:
case TYPE_UVEC2:
case TYPE_VEC2:
return 8;
case TYPE_BVEC3:
case TYPE_IVEC3:
case TYPE_UVEC3:
case TYPE_VEC3:
return 12;
case TYPE_BVEC4:
case TYPE_IVEC4:
case TYPE_UVEC4:
case TYPE_VEC4:
return 16;
case TYPE_MAT2:
return 8;
case TYPE_MAT3:
return 12;
case TYPE_MAT4:
return 16;
case TYPE_SAMPLER2D:
case TYPE_ISAMPLER2D:
case TYPE_USAMPLER2D:
case TYPE_SAMPLER2DARRAY:
case TYPE_ISAMPLER2DARRAY:
case TYPE_USAMPLER2DARRAY:
case TYPE_SAMPLER3D:
case TYPE_ISAMPLER3D:
case TYPE_USAMPLER3D:
case TYPE_SAMPLERCUBE:
case TYPE_SAMPLERCUBEARRAY:
return 4; //not really, but useful for indices
case TYPE_STRUCT:
// FIXME: Implement.
return 0;
case ShaderLanguage::TYPE_MAX:
return 0;
}
return 0;
}
void ShaderLanguage::get_keyword_list(List<String> *r_keywords) {
Set<String> kws;
int idx = 0;
while (keyword_list[idx].text) {
kws.insert(keyword_list[idx].text);
idx++;
}
idx = 0;
while (builtin_func_defs[idx].name) {
kws.insert(builtin_func_defs[idx].name);
idx++;
}
for (Set<String>::Element *E = kws.front(); E; E = E->next()) {
r_keywords->push_back(E->get());
}
}
void ShaderLanguage::get_builtin_funcs(List<String> *r_keywords) {
Set<String> kws;
int idx = 0;
while (builtin_func_defs[idx].name) {
kws.insert(builtin_func_defs[idx].name);
idx++;
}
for (Set<String>::Element *E = kws.front(); E; E = E->next()) {
r_keywords->push_back(E->get());
}
}
ShaderLanguage::DataType ShaderLanguage::get_scalar_type(DataType p_type) {
static const DataType scalar_types[] = {
TYPE_VOID,
TYPE_BOOL,
TYPE_BOOL,
TYPE_BOOL,
TYPE_BOOL,
TYPE_INT,
TYPE_INT,
TYPE_INT,
TYPE_INT,
TYPE_UINT,
TYPE_UINT,
TYPE_UINT,
TYPE_UINT,
TYPE_FLOAT,
TYPE_FLOAT,
TYPE_FLOAT,
TYPE_FLOAT,
TYPE_FLOAT,
TYPE_FLOAT,
TYPE_FLOAT,
TYPE_FLOAT,
TYPE_INT,
TYPE_UINT,
TYPE_FLOAT,
};
return scalar_types[p_type];
}
int ShaderLanguage::get_cardinality(DataType p_type) {
static const int cardinality_table[] = {
0,
1,
2,
3,
4,
1,
2,
3,
4,
1,
2,
3,
4,
1,
2,
3,
4,
4,
9,
16,
1,
1,
1,
1,
};
return cardinality_table[p_type];
}
bool ShaderLanguage::_get_completable_identifier(BlockNode *p_block, CompletionType p_type, StringName &identifier) {
identifier = StringName();
TkPos pos = { 0, 0 };
Token tk = _get_token();
if (tk.type == TK_IDENTIFIER) {
identifier = tk.text;
pos = _get_tkpos();
tk = _get_token();
}
if (tk.type == TK_CURSOR) {
completion_type = p_type;
completion_line = tk_line;
completion_block = p_block;
pos = _get_tkpos();
tk = _get_token();
if (tk.type == TK_IDENTIFIER) {
identifier = identifier.operator String() + tk.text.operator String();
} else {
_set_tkpos(pos);
}
return true;
} else if (identifier != StringName()) {
_set_tkpos(pos);
}
return false;
}
bool ShaderLanguage::_is_operator_assign(Operator p_op) const {
switch (p_op) {
case OP_ASSIGN:
case OP_ASSIGN_ADD:
case OP_ASSIGN_SUB:
case OP_ASSIGN_MUL:
case OP_ASSIGN_DIV:
case OP_ASSIGN_MOD:
case OP_ASSIGN_SHIFT_LEFT:
case OP_ASSIGN_SHIFT_RIGHT:
case OP_ASSIGN_BIT_AND:
case OP_ASSIGN_BIT_OR:
case OP_ASSIGN_BIT_XOR:
return true;
default:
return false;
}
return false;
}
bool ShaderLanguage::_validate_varying_assign(ShaderNode::Varying &p_varying, String *r_message) {
if (current_function == String("light")) {
*r_message = RTR("Varying may not be assigned in the 'light' function.");
return false;
}
switch (p_varying.stage) {
case ShaderNode::Varying::STAGE_UNKNOWN: // first assign
if (current_function == String("vertex")) {
p_varying.stage = ShaderNode::Varying::STAGE_VERTEX;
} else if (current_function == String("fragment")) {
p_varying.stage = ShaderNode::Varying::STAGE_FRAGMENT;
}
break;
case ShaderNode::Varying::STAGE_VERTEX:
if (current_function == String("fragment")) {
*r_message = RTR("Varyings which assigned in 'vertex' function may not be reassigned in 'fragment' or 'light'.");
return false;
}
break;
case ShaderNode::Varying::STAGE_FRAGMENT:
if (current_function == String("vertex")) {
*r_message = RTR("Varyings which assigned in 'fragment' function may not be reassigned in 'vertex' or 'light'.");
return false;
}
break;
default:
break;
}
return true;
}
bool ShaderLanguage::_validate_varying_using(ShaderNode::Varying &p_varying, String *r_message) {
switch (p_varying.stage) {
case ShaderNode::Varying::STAGE_UNKNOWN:
*r_message = RTR("Varying must be assigned before using!");
return false;
case ShaderNode::Varying::STAGE_VERTEX:
if (current_function == String("fragment")) {
p_varying.stage = ShaderNode::Varying::STAGE_VERTEX_TO_FRAGMENT;
} else if (current_function == String("light")) {
p_varying.stage = ShaderNode::Varying::STAGE_VERTEX_TO_LIGHT;
}
break;
case ShaderNode::Varying::STAGE_FRAGMENT:
if (current_function == String("light")) {
p_varying.stage = ShaderNode::Varying::STAGE_FRAGMENT_TO_LIGHT;
}
break;
case ShaderNode::Varying::STAGE_VERTEX_TO_FRAGMENT:
if (current_function == String("light")) {
*r_message = RTR("Varying must only be used in two different stages, which can be 'vertex' 'fragment' and 'light'");
return false;
}
break;
case ShaderNode::Varying::STAGE_VERTEX_TO_LIGHT:
if (current_function == String("fragment")) {
*r_message = RTR("Varying must only be used in two different stages, which can be 'vertex' 'fragment' and 'light'");
return false;
}
break;
default:
break;
}
return true;
}
bool ShaderLanguage::_validate_assign(Node *p_node, const FunctionInfo &p_function_info, String *r_message) {
if (p_node->type == Node::TYPE_OPERATOR) {
OperatorNode *op = static_cast<OperatorNode *>(p_node);
if (op->op == OP_INDEX) {
return _validate_assign(op->arguments[0], p_function_info, r_message);
} else if (_is_operator_assign(op->op)) {
//chained assignment
return _validate_assign(op->arguments[1], p_function_info, r_message);
} else if (op->op == OP_CALL) {
if (r_message) {
*r_message = RTR("Assignment to function.");
}
return false;
}
} else if (p_node->type == Node::TYPE_MEMBER) {
MemberNode *member = static_cast<MemberNode *>(p_node);
if (member->has_swizzling_duplicates) {
if (r_message) {
*r_message = RTR("Swizzling assignment contains duplicates.");
}
return false;
}
return _validate_assign(member->owner, p_function_info, r_message);
} else if (p_node->type == Node::TYPE_VARIABLE) {
VariableNode *var = static_cast<VariableNode *>(p_node);
if (shader->uniforms.has(var->name)) {
if (r_message) {
*r_message = RTR("Assignment to uniform.");
}
return false;
}
if (shader->constants.has(var->name) || var->is_const) {
if (r_message) {
*r_message = RTR("Constants cannot be modified.");
}
return false;
}
if (!(p_function_info.built_ins.has(var->name) && p_function_info.built_ins[var->name].constant)) {
return true;
}
} else if (p_node->type == Node::TYPE_ARRAY) {
ArrayNode *arr = static_cast<ArrayNode *>(p_node);
if (shader->constants.has(arr->name) || arr->is_const) {
if (r_message) {
*r_message = RTR("Constants cannot be modified.");
}
return false;
}
return true;
}
if (r_message) {
*r_message = "Assignment to constant expression.";
}
return false;
}
bool ShaderLanguage::_propagate_function_call_sampler_uniform_settings(StringName p_name, int p_argument, TextureFilter p_filter, TextureRepeat p_repeat) {
for (int i = 0; i < shader->functions.size(); i++) {
if (shader->functions[i].name == p_name) {
ERR_FAIL_INDEX_V(p_argument, shader->functions[i].function->arguments.size(), false);
FunctionNode::Argument *arg = &shader->functions[i].function->arguments.write[p_argument];
if (arg->tex_builtin_check) {
_set_error("Sampler argument #" + itos(p_argument) + " of function '" + String(p_name) + "' called more than once using both built-ins and uniform textures, this is not supported (use either one or the other).");
return false;
} else if (arg->tex_argument_check) {
//was checked, verify that filter and repeat are the same
if (arg->tex_argument_filter == p_filter && arg->tex_argument_repeat == p_repeat) {
return true;
} else {
_set_error("Sampler argument #" + itos(p_argument) + " of function '" + String(p_name) + "' called more than once using textures that differ in either filter or repeat setting.");
return false;
}
} else {
arg->tex_argument_check = true;
arg->tex_argument_filter = p_filter;
arg->tex_argument_repeat = p_repeat;
for (Map<StringName, Set<int>>::Element *E = arg->tex_argument_connect.front(); E; E = E->next()) {
for (Set<int>::Element *F = E->get().front(); F; F = F->next()) {
if (!_propagate_function_call_sampler_uniform_settings(E->key(), F->get(), p_filter, p_repeat)) {
return false;
}
}
}
return true;
}
}
}
ERR_FAIL_V(false); //bug? function not found
}
bool ShaderLanguage::_propagate_function_call_sampler_builtin_reference(StringName p_name, int p_argument, const StringName &p_builtin) {
for (int i = 0; i < shader->functions.size(); i++) {
if (shader->functions[i].name == p_name) {
ERR_FAIL_INDEX_V(p_argument, shader->functions[i].function->arguments.size(), false);
FunctionNode::Argument *arg = &shader->functions[i].function->arguments.write[p_argument];
if (arg->tex_argument_check) {
_set_error("Sampler argument #" + itos(p_argument) + " of function '" + String(p_name) + "' called more than once using both built-ins and uniform textures, this is not supported (use either one or the other).");
return false;
} else if (arg->tex_builtin_check) {
//was checked, verify that the built-in is the same
if (arg->tex_builtin == p_builtin) {
return true;
} else {
_set_error("Sampler argument #" + itos(p_argument) + " of function '" + String(p_name) + "' called more than once using different built-ins. Only calling with the same built-in is supported.");
return false;
}
} else {
arg->tex_builtin_check = true;
arg->tex_builtin = p_builtin;
for (Map<StringName, Set<int>>::Element *E = arg->tex_argument_connect.front(); E; E = E->next()) {
for (Set<int>::Element *F = E->get().front(); F; F = F->next()) {
if (!_propagate_function_call_sampler_builtin_reference(E->key(), F->get(), p_builtin)) {
return false;
}
}
}
return true;
}
}
}
ERR_FAIL_V(false); //bug? function not found
}
ShaderLanguage::Node *ShaderLanguage::_parse_array_constructor(BlockNode *p_block, const FunctionInfo &p_function_info, DataType p_type, const StringName &p_struct_name, int p_array_size) {
DataType type = TYPE_VOID;
String struct_name = "";
int array_size = 0;
bool auto_size = false;
Token tk = _get_token();
if (tk.type == TK_CURLY_BRACKET_OPEN) {
auto_size = true;
} else {
if (shader->structs.has(tk.text)) {
type = TYPE_STRUCT;
struct_name = tk.text;
} else {
if (!is_token_variable_datatype(tk.type)) {
_set_error("Invalid data type for array");
return nullptr;
}
type = get_token_datatype(tk.type);
}
tk = _get_token();
if (tk.type == TK_BRACKET_OPEN) {
TkPos pos = _get_tkpos();
tk = _get_token();
if (tk.type == TK_BRACKET_CLOSE) {
array_size = p_array_size;
tk = _get_token();
} else {
_set_tkpos(pos);
Node *n = _parse_and_reduce_expression(p_block, p_function_info);
if (!n || n->type != Node::TYPE_CONSTANT || n->get_datatype() != TYPE_INT) {
_set_error("Expected single integer constant > 0");
return nullptr;
}
ConstantNode *cnode = (ConstantNode *)n;
if (cnode->values.size() == 1) {
array_size = cnode->values[0].sint;
if (array_size <= 0) {
_set_error("Expected single integer constant > 0");
return nullptr;
}
} else {
_set_error("Expected single integer constant > 0");
return nullptr;
}
tk = _get_token();
if (tk.type != TK_BRACKET_CLOSE) {
_set_error("Expected ']'");
return nullptr;
} else {
tk = _get_token();
}
}
} else {
_set_error("Expected '['");
return nullptr;
}
if (type != p_type || struct_name != p_struct_name || array_size != p_array_size) {
String error_str = "Cannot convert from '";
if (type == TYPE_STRUCT) {
error_str += struct_name;
} else {
error_str += get_datatype_name(type);
}
error_str += "[";
error_str += itos(array_size);
error_str += "]'";
error_str += " to '";
if (type == TYPE_STRUCT) {
error_str += p_struct_name;
} else {
error_str += get_datatype_name(p_type);
}
error_str += "[";
error_str += itos(p_array_size);
error_str += "]'";
_set_error(error_str);
return nullptr;
}
}
ArrayConstructNode *an = alloc_node<ArrayConstructNode>();
an->datatype = p_type;
an->struct_name = p_struct_name;
if (tk.type == TK_PARENTHESIS_OPEN || auto_size) { // initialization
while (true) {
Node *n = _parse_and_reduce_expression(p_block, p_function_info);
if (!n) {
return nullptr;
}
if (p_type != n->get_datatype() || p_struct_name != n->get_datatype_name()) {
_set_error("Invalid assignment of '" + (n->get_datatype() == TYPE_STRUCT ? n->get_datatype_name() : get_datatype_name(n->get_datatype())) + "' to '" + (type == TYPE_STRUCT ? struct_name : get_datatype_name(type)) + "'");
return nullptr;
}
tk = _get_token();
if (tk.type == TK_COMMA) {
an->initializer.push_back(n);
} else if (!auto_size && tk.type == TK_PARENTHESIS_CLOSE) {
an->initializer.push_back(n);
break;
} else if (auto_size && tk.type == TK_CURLY_BRACKET_CLOSE) {
an->initializer.push_back(n);
break;
} else {
if (auto_size) {
_set_error("Expected '}' or ','");
} else {
_set_error("Expected ')' or ','");
}
return nullptr;
}
}
if (an->initializer.size() != p_array_size) {
_set_error("Array size mismatch");
return nullptr;
}
} else {
_set_error("Expected array initialization!");
return nullptr;
}
return an;
}
ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, const FunctionInfo &p_function_info) {
Vector<Expression> expression;
//Vector<TokenType> operators;
while (true) {
Node *expr = nullptr;
TkPos prepos = _get_tkpos();
Token tk = _get_token();
TkPos pos = _get_tkpos();
bool is_const = false;
if (tk.type == TK_PARENTHESIS_OPEN) {
//handle subexpression
expr = _parse_and_reduce_expression(p_block, p_function_info);
if (!expr) {
return nullptr;
}
tk = _get_token();
if (tk.type != TK_PARENTHESIS_CLOSE) {
_set_error("Expected ')' in expression");
return nullptr;
}
} else if (tk.type == TK_FLOAT_CONSTANT) {
ConstantNode *constant = alloc_node<ConstantNode>();
ConstantNode::Value v;
v.real = tk.constant;
constant->values.push_back(v);
constant->datatype = TYPE_FLOAT;
expr = constant;
} else if (tk.type == TK_INT_CONSTANT) {
ConstantNode *constant = alloc_node<ConstantNode>();
ConstantNode::Value v;
v.sint = tk.constant;
constant->values.push_back(v);
constant->datatype = TYPE_INT;
expr = constant;
} else if (tk.type == TK_TRUE) {
//handle true constant
ConstantNode *constant = alloc_node<ConstantNode>();
ConstantNode::Value v;
v.boolean = true;
constant->values.push_back(v);
constant->datatype = TYPE_BOOL;
expr = constant;
} else if (tk.type == TK_FALSE) {
//handle false constant
ConstantNode *constant = alloc_node<ConstantNode>();
ConstantNode::Value v;
v.boolean = false;
constant->values.push_back(v);
constant->datatype = TYPE_BOOL;
expr = constant;
} else if (tk.type == TK_TYPE_VOID) {
//make sure void is not used in expression
_set_error("Void value not allowed in Expression");
return nullptr;
} else if (is_token_nonvoid_datatype(tk.type)) {
//basic type constructor
OperatorNode *func = alloc_node<OperatorNode>();
func->op = OP_CONSTRUCT;
if (is_token_precision(tk.type)) {
func->return_precision_cache = get_token_precision(tk.type);
tk = _get_token();
}
VariableNode *funcname = alloc_node<VariableNode>();
funcname->name = get_datatype_name(get_token_datatype(tk.type));
func->arguments.push_back(funcname);
tk = _get_token();
if (tk.type != TK_PARENTHESIS_OPEN) {
_set_error("Expected '(' after type name");
return nullptr;
}
int carg = -1;
bool ok = _parse_function_arguments(p_block, p_function_info, func, &carg);
if (carg >= 0) {
completion_type = COMPLETION_CALL_ARGUMENTS;
completion_line = tk_line;
completion_block = p_block;
completion_function = funcname->name;
completion_argument = carg;
}
if (!ok) {
return nullptr;
}
if (!_validate_function_call(p_block, p_function_info, func, &func->return_cache, &func->struct_name)) {
_set_error("No matching constructor found for: '" + String(funcname->name) + "'");
return nullptr;
}
expr = _reduce_expression(p_block, func);
} else if (tk.type == TK_IDENTIFIER) {
_set_tkpos(prepos);
StringName identifier;
StructNode *pstruct = nullptr;
bool struct_init = false;
_get_completable_identifier(p_block, COMPLETION_IDENTIFIER, identifier);
if (shader->structs.has(identifier)) {
pstruct = shader->structs[identifier].shader_struct;
struct_init = true;
}
tk = _get_token();
if (tk.type == TK_PARENTHESIS_OPEN) {
if (struct_init) { //a struct constructor
const StringName &name = identifier;
OperatorNode *func = alloc_node<OperatorNode>();
func->op = OP_STRUCT;
func->struct_name = name;
func->return_cache = TYPE_STRUCT;
VariableNode *funcname = alloc_node<VariableNode>();
funcname->name = name;
func->arguments.push_back(funcname);
for (int i = 0; i < pstruct->members.size(); i++) {
Node *nexpr;
if (pstruct->members[i]->array_size != 0) {
nexpr = _parse_array_constructor(p_block, p_function_info, pstruct->members[i]->get_datatype(), pstruct->members[i]->struct_name, pstruct->members[i]->array_size);
if (!nexpr) {
return nullptr;
}
} else {
nexpr = _parse_and_reduce_expression(p_block, p_function_info);
if (!nexpr) {
return nullptr;
}
Node *node = pstruct->members[i];
if (!_compare_datatypes_in_nodes(pstruct->members[i], nexpr)) {
String type_name = nexpr->get_datatype() == TYPE_STRUCT ? nexpr->get_datatype_name() : get_datatype_name(nexpr->get_datatype());
String type_name2 = node->get_datatype() == TYPE_STRUCT ? node->get_datatype_name() : get_datatype_name(node->get_datatype());
_set_error("Invalid assignment of '" + type_name + "' to '" + type_name2 + "'");
return nullptr;
}
}
if (i + 1 < pstruct->members.size()) {
tk = _get_token();
if (tk.type != TK_COMMA) {
_set_error("Expected ','");
return nullptr;
}
}
func->arguments.push_back(nexpr);
}
tk = _get_token();
if (tk.type != TK_PARENTHESIS_CLOSE) {
_set_error("Expected ')'");
return nullptr;
}
expr = func;
} else { //a function
const StringName &name = identifier;
OperatorNode *func = alloc_node<OperatorNode>();
func->op = OP_CALL;
VariableNode *funcname = alloc_node<VariableNode>();
funcname->name = name;
func->arguments.push_back(funcname);
int carg = -1;
bool ok = _parse_function_arguments(p_block, p_function_info, func, &carg);
// Check if block has a variable with the same name as function to prevent shader crash.
ShaderLanguage::BlockNode *bnode = p_block;
while (bnode) {
if (bnode->variables.has(name)) {
_set_error("Expected function name");
return nullptr;
}
bnode = bnode->parent_block;
}
//test if function was parsed first
int function_index = -1;
for (int i = 0; i < shader->functions.size(); i++) {
if (shader->functions[i].name == name) {
//add to current function as dependency
for (int j = 0; j < shader->functions.size(); j++) {
if (shader->functions[j].name == current_function) {
shader->functions.write[j].uses_function.insert(name);
break;
}
}
//see if texture arguments must connect
function_index = i;
break;
}
}
if (carg >= 0) {
completion_type = COMPLETION_CALL_ARGUMENTS;
completion_line = tk_line;
completion_block = p_block;
completion_function = funcname->name;
completion_argument = carg;
}
if (!ok) {
return nullptr;
}
if (!_validate_function_call(p_block, p_function_info, func, &func->return_cache, &func->struct_name)) {
_set_error("No matching function found for: '" + String(funcname->name) + "'");
return nullptr;
}
completion_class = TAG_GLOBAL; // reset sub-class
if (function_index >= 0) {
//connect texture arguments, so we can cache in the
//argument what type of filter and repeat to use
FunctionNode *call_function = shader->functions[function_index].function;
if (call_function) {
//get current base function
FunctionNode *base_function = nullptr;
{
BlockNode *b = p_block;
while (b) {
if (b->parent_function) {
base_function = b->parent_function;
break;
} else {
b = b->parent_block;
}
}
}
ERR_FAIL_COND_V(!base_function, nullptr); //bug, wtf
for (int i = 0; i < call_function->arguments.size(); i++) {
int argidx = i + 1;
if (argidx < func->arguments.size()) {
if (call_function->arguments[i].is_const || call_function->arguments[i].qualifier == ArgumentQualifier::ARGUMENT_QUALIFIER_OUT || call_function->arguments[i].qualifier == ArgumentQualifier::ARGUMENT_QUALIFIER_INOUT) {
bool error = false;
Node *n = func->arguments[argidx];
if (n->type == Node::TYPE_CONSTANT || n->type == Node::TYPE_OPERATOR) {
error = true;
} else if (n->type == Node::TYPE_ARRAY) {
ArrayNode *an = static_cast<ArrayNode *>(n);
if (an->call_expression != nullptr || an->is_const) {
error = true;
}
} else if (n->type == Node::TYPE_VARIABLE) {
VariableNode *vn = static_cast<VariableNode *>(n);
if (vn->is_const) {
error = true;
} else {
StringName varname = vn->name;
if (shader->constants.has(varname)) {
error = true;
} else if (shader->uniforms.has(varname)) {
error = true;
} else {
if (p_function_info.built_ins.has(varname)) {
BuiltInInfo info = p_function_info.built_ins[varname];
if (info.constant) {
error = true;
}
}
}
}
} else if (n->type == Node::TYPE_MEMBER) {
MemberNode *mn = static_cast<MemberNode *>(n);
if (mn->basetype_const) {
error = true;
}
}
if (error) {
_set_error(vformat("Constant value cannot be passed for '%s' parameter!", _get_qualifier_str(call_function->arguments[i].qualifier)));
return nullptr;
}
}
if (is_sampler_type(call_function->arguments[i].type)) {
//let's see where our argument comes from
Node *n = func->arguments[argidx];
ERR_CONTINUE(n->type != Node::TYPE_VARIABLE); //bug? this should always be a variable
VariableNode *vn = static_cast<VariableNode *>(n);
StringName varname = vn->name;
if (shader->uniforms.has(varname)) {
//being sampler, this either comes from a uniform
ShaderNode::Uniform *u = &shader->uniforms[varname];
ERR_CONTINUE(u->type != call_function->arguments[i].type); //this should have been validated previously
//propagate
if (!_propagate_function_call_sampler_uniform_settings(name, i, u->filter, u->repeat)) {
return nullptr;
}
} else if (p_function_info.built_ins.has(varname)) {
//a built-in
if (!_propagate_function_call_sampler_builtin_reference(name, i, varname)) {
return nullptr;
}
} else {
//or this comes from an argument, but nothing else can be a sampler
bool found = false;
for (int j = 0; j < base_function->arguments.size(); j++) {
if (base_function->arguments[j].name == varname) {
if (!base_function->arguments[j].tex_argument_connect.has(call_function->name)) {
base_function->arguments.write[j].tex_argument_connect[call_function->name] = Set<int>();
}
base_function->arguments.write[j].tex_argument_connect[call_function->name].insert(i);
found = true;
break;
}
}
ERR_CONTINUE(!found);
}
}
} else {
break;
}
}
}
}
expr = func;
}
} else {
//an identifier
last_const = false;
_set_tkpos(pos);
DataType data_type;
IdentifierType ident_type;
int array_size = 0;
StringName struct_name;
if (p_block && p_block->block_tag != SubClassTag::TAG_GLOBAL) {
int idx = 0;
bool found = false;
while (builtin_func_defs[idx].name) {
if (builtin_func_defs[idx].tag == p_block->block_tag && builtin_func_defs[idx].name == identifier) {
found = true;
break;
}
idx++;
}
if (!found) {
_set_error("Unknown identifier in expression: " + String(identifier));
return nullptr;
}
} else {
if (!_find_identifier(p_block, false, p_function_info, identifier, &data_type, &ident_type, &is_const, &array_size, &struct_name)) {
_set_error("Unknown identifier in expression: " + String(identifier));
return nullptr;
}
if (ident_type == IDENTIFIER_VARYING) {
TkPos prev_pos = _get_tkpos();
Token next_token = _get_token();
_set_tkpos(prev_pos);
String error;
if (next_token.type == TK_OP_ASSIGN) {
if (!_validate_varying_assign(shader->varyings[identifier], &error)) {
_set_error(error);
return nullptr;
}
} else {
if (!_validate_varying_using(shader->varyings[identifier], &error)) {
_set_error(error);
return nullptr;
}
}
}
last_const = is_const;
if (ident_type == IDENTIFIER_FUNCTION) {
_set_error("Can't use function as identifier: " + String(identifier));
return nullptr;
}
}
Node *index_expression = nullptr;
Node *call_expression = nullptr;
Node *assign_expression = nullptr;
if (array_size > 0) {
tk = _get_token();
if (tk.type != TK_BRACKET_OPEN && tk.type != TK_PERIOD && tk.type != TK_OP_ASSIGN) {
_set_error("Expected '[','.' or '='");
return nullptr;
}
if (tk.type == TK_OP_ASSIGN) {
if (is_const) {
_set_error("Constants cannot be modified.");
return nullptr;
}
assign_expression = _parse_array_constructor(p_block, p_function_info, data_type, struct_name, array_size);
if (!assign_expression) {
return nullptr;
}
} else if (tk.type == TK_PERIOD) {
completion_class = TAG_ARRAY;
p_block->block_tag = SubClassTag::TAG_ARRAY;
call_expression = _parse_and_reduce_expression(p_block, p_function_info);
p_block->block_tag = SubClassTag::TAG_GLOBAL;
if (!call_expression) {
return nullptr;
}
data_type = call_expression->get_datatype();
} else { // indexing
index_expression = _parse_and_reduce_expression(p_block, p_function_info);
if (!index_expression) {
return nullptr;
}
if (index_expression->get_datatype() != TYPE_INT && index_expression->get_datatype() != TYPE_UINT) {
_set_error("Only integer expressions are allowed for indexing");
return nullptr;
}
if (index_expression->type == Node::TYPE_CONSTANT) {
ConstantNode *cnode = (ConstantNode *)index_expression;
if (cnode) {
if (!cnode->values.is_empty()) {
int value = cnode->values[0].sint;
if (value < 0 || value >= array_size) {
_set_error(vformat("Index [%s] out of range [%s..%s]", value, 0, array_size - 1));
return nullptr;
}
}
}
}
tk = _get_token();
if (tk.type != TK_BRACKET_CLOSE) {
_set_error("Expected ']'");
return nullptr;
}
}
ArrayNode *arrname = alloc_node<ArrayNode>();
arrname->name = identifier;
arrname->datatype_cache = data_type;
arrname->struct_name = struct_name;
arrname->index_expression = index_expression;
arrname->call_expression = call_expression;
arrname->assign_expression = assign_expression;
arrname->is_const = is_const;
expr = arrname;
} else {
VariableNode *varname = alloc_node<VariableNode>();
varname->name = identifier;
varname->datatype_cache = data_type;
varname->is_const = is_const;
varname->struct_name = struct_name;
expr = varname;
}
}
} else if (tk.type == TK_OP_ADD) {
continue; //this one does nothing
} else if (tk.type == TK_OP_SUB || tk.type == TK_OP_NOT || tk.type == TK_OP_BIT_INVERT || tk.type == TK_OP_INCREMENT || tk.type == TK_OP_DECREMENT) {
Expression e;
e.is_op = true;
switch (tk.type) {
case TK_OP_SUB:
e.op = OP_NEGATE;
break;
case TK_OP_NOT:
e.op = OP_NOT;
break;
case TK_OP_BIT_INVERT:
e.op = OP_BIT_INVERT;
break;
case TK_OP_INCREMENT:
e.op = OP_INCREMENT;
break;
case TK_OP_DECREMENT:
e.op = OP_DECREMENT;
break;
default:
ERR_FAIL_V(nullptr);
}
expression.push_back(e);
continue;
} else {
_set_error("Expected expression, found: " + get_token_text(tk));
return nullptr;
//nothing
}
ERR_FAIL_COND_V(!expr, nullptr);
/* OK now see what's NEXT to the operator.. */
/* OK now see what's NEXT to the operator.. */
/* OK now see what's NEXT to the operator.. */
while (true) {
TkPos pos2 = _get_tkpos();
tk = _get_token();
if (tk.type == TK_CURSOR) {
//do nothing
} else if (tk.type == TK_IDENTIFIER) {
} else if (tk.type == TK_PERIOD) {
DataType dt = expr->get_datatype();
String st = expr->get_datatype_name();
StringName identifier;
if (_get_completable_identifier(p_block, dt == TYPE_STRUCT ? COMPLETION_STRUCT : COMPLETION_INDEX, identifier)) {
if (dt == TYPE_STRUCT) {
completion_struct = st;
} else {
completion_base = dt;
}
}
if (identifier == StringName()) {
_set_error("Expected identifier as member");
return nullptr;
}
String ident = identifier;
bool ok = true;
bool repeated = false;
DataType member_type = TYPE_VOID;
StringName member_struct_name = "";
int array_size = 0;
Set<char> position_symbols;
Set<char> color_symbols;
Set<char> texture_symbols;
bool mix_error = false;
switch (dt) {
case TYPE_STRUCT: {
ok = false;
String member_name = String(ident.ptr());
if (shader->structs.has(st)) {
StructNode *n = shader->structs[st].shader_struct;
for (List<MemberNode *>::Element *E = n->members.front(); E; E = E->next()) {
if (String(E->get()->name) == member_name) {
member_type = E->get()->datatype;
array_size = E->get()->array_size;
if (member_type == TYPE_STRUCT) {
member_struct_name = E->get()->struct_name;
}
ok = true;
break;
}
}
}
} break;
case TYPE_BVEC2:
case TYPE_IVEC2:
case TYPE_UVEC2:
case TYPE_VEC2: {
int l = ident.length();
if (l == 1) {
member_type = DataType(dt - 1);
} else if (l == 2) {
member_type = dt;
} else if (l == 3) {
member_type = DataType(dt + 1);
} else if (l == 4) {
member_type = DataType(dt + 2);
} else {
ok = false;
break;
}
const char32_t *c = ident.ptr();
for (int i = 0; i < l; i++) {
switch (c[i]) {
case 'r':
case 'g':
if (position_symbols.size() > 0 || texture_symbols.size() > 0) {
mix_error = true;
break;
}
if (!color_symbols.has(c[i])) {
color_symbols.insert(c[i]);
} else {
repeated = true;
}
break;
case 'x':
case 'y':
if (color_symbols.size() > 0 || texture_symbols.size() > 0) {
mix_error = true;
break;
}
if (!position_symbols.has(c[i])) {
position_symbols.insert(c[i]);
} else {
repeated = true;
}
break;
case 's':
case 't':
if (color_symbols.size() > 0 || position_symbols.size() > 0) {
mix_error = true;
break;
}
if (!texture_symbols.has(c[i])) {
texture_symbols.insert(c[i]);
} else {
repeated = true;
}
break;
default:
ok = false;
break;
}
}
} break;
case TYPE_BVEC3:
case TYPE_IVEC3:
case TYPE_UVEC3:
case TYPE_VEC3: {
int l = ident.length();
if (l == 1) {
member_type = DataType(dt - 2);
} else if (l == 2) {
member_type = DataType(dt - 1);
} else if (l == 3) {
member_type = dt;
} else if (l == 4) {
member_type = DataType(dt + 1);
} else {
ok = false;
break;
}
const char32_t *c = ident.ptr();
for (int i = 0; i < l; i++) {
switch (c[i]) {
case 'r':
case 'g':
case 'b':
if (position_symbols.size() > 0 || texture_symbols.size() > 0) {
mix_error = true;
break;
}
if (!color_symbols.has(c[i])) {
color_symbols.insert(c[i]);
} else {
repeated = true;
}
break;
case 'x':
case 'y':
case 'z':
if (color_symbols.size() > 0 || texture_symbols.size() > 0) {
mix_error = true;
break;
}
if (!position_symbols.has(c[i])) {
position_symbols.insert(c[i]);
} else {
repeated = true;
}
break;
case 's':
case 't':
case 'p':
if (color_symbols.size() > 0 || position_symbols.size() > 0) {
mix_error = true;
break;
}
if (!texture_symbols.has(c[i])) {
texture_symbols.insert(c[i]);
} else {
repeated = true;
}
break;
default:
ok = false;
break;
}
}
} break;
case TYPE_BVEC4:
case TYPE_IVEC4:
case TYPE_UVEC4:
case TYPE_VEC4: {
int l = ident.length();
if (l == 1) {
member_type = DataType(dt - 3);
} else if (l == 2) {
member_type = DataType(dt - 2);
} else if (l == 3) {
member_type = DataType(dt - 1);
} else if (l == 4) {
member_type = dt;
} else {
ok = false;
break;
}
const char32_t *c = ident.ptr();
for (int i = 0; i < l; i++) {
switch (c[i]) {
case 'r':
case 'g':
case 'b':
case 'a':
if (position_symbols.size() > 0 || texture_symbols.size() > 0) {
mix_error = true;
break;
}
if (!color_symbols.has(c[i])) {
color_symbols.insert(c[i]);
} else {
repeated = true;
}
break;
case 'x':
case 'y':
case 'z':
case 'w':
if (color_symbols.size() > 0 || texture_symbols.size() > 0) {
mix_error = true;
break;
}
if (!position_symbols.has(c[i])) {
position_symbols.insert(c[i]);
} else {
repeated = true;
}
break;
case 's':
case 't':
case 'p':
case 'q':
if (color_symbols.size() > 0 || position_symbols.size() > 0) {
mix_error = true;
break;
}
if (!texture_symbols.has(c[i])) {
texture_symbols.insert(c[i]);
} else {
repeated = true;
}
break;
default:
ok = false;
break;
}
}
} break;
default: {
ok = false;
}
}
if (mix_error) {
_set_error("Cannot combine symbols from different sets in expression ." + ident);
return nullptr;
}
if (!ok) {
_set_error("Invalid member for " + (dt == TYPE_STRUCT ? st : get_datatype_name(dt)) + " expression: ." + ident);
return nullptr;
}
MemberNode *mn = alloc_node<MemberNode>();
mn->basetype = dt;
mn->basetype_const = is_const;
mn->datatype = member_type;
mn->base_struct_name = st;
mn->struct_name = member_struct_name;
mn->array_size = array_size;
mn->name = ident;
mn->owner = expr;
mn->has_swizzling_duplicates = repeated;
if (array_size > 0) {
tk = _get_token();
if (tk.type == TK_OP_ASSIGN) {
if (last_const) {
last_const = false;
_set_error("Constants cannot be modified.");
return nullptr;
}
Node *assign_expression = _parse_array_constructor(p_block, p_function_info, member_type, member_struct_name, array_size);
if (!assign_expression) {
return nullptr;
}
mn->assign_expression = assign_expression;
} else if (tk.type == TK_PERIOD) {
_set_error("Nested array length() is not yet implemented");
return nullptr;
} else if (tk.type == TK_BRACKET_OPEN) {
Node *index_expression = _parse_and_reduce_expression(p_block, p_function_info);
if (!index_expression) {
return nullptr;
}
if (index_expression->get_datatype() != TYPE_INT && index_expression->get_datatype() != TYPE_UINT) {
_set_error("Only integer expressions are allowed for indexing");
return nullptr;
}
if (index_expression->type == Node::TYPE_CONSTANT) {
ConstantNode *cnode = (ConstantNode *)index_expression;
if (cnode) {
if (!cnode->values.is_empty()) {
int value = cnode->values[0].sint;
if (value < 0 || value >= array_size) {
_set_error(vformat("Index [%s] out of range [%s..%s]", value, 0, array_size - 1));
return nullptr;
}
}
}
}
tk = _get_token();
if (tk.type != TK_BRACKET_CLOSE) {
_set_error("Expected ']'");
return nullptr;
}
mn->index_expression = index_expression;
} else {
_set_error("Expected '[','.' or '='");
return nullptr;
}
}
expr = mn;
//todo
//member (period) has priority over any operator
//creates a subindexing expression in place
/*} else if (tk.type==TK_BRACKET_OPEN) {
//todo
//subindexing has priority over any operator
//creates a subindexing expression in place
*/
} else if (tk.type == TK_BRACKET_OPEN) {
Node *index = _parse_and_reduce_expression(p_block, p_function_info);
if (!index) {
return nullptr;
}
if (index->get_datatype() != TYPE_INT && index->get_datatype() != TYPE_UINT) {
_set_error("Only integer datatypes are allowed for indexing");
return nullptr;
}
DataType member_type = TYPE_VOID;
switch (expr->get_datatype()) {
case TYPE_BVEC2:
case TYPE_VEC2:
case TYPE_IVEC2:
case TYPE_UVEC2:
case TYPE_MAT2:
if (index->type == Node::TYPE_CONSTANT) {
uint32_t index_constant = static_cast<ConstantNode *>(index)->values[0].uint;
if (index_constant >= 2) {
_set_error("Index out of range (0-1)");
return nullptr;
}
}
switch (expr->get_datatype()) {
case TYPE_BVEC2:
member_type = TYPE_BOOL;
break;
case TYPE_VEC2:
member_type = TYPE_FLOAT;
break;
case TYPE_IVEC2:
member_type = TYPE_INT;
break;
case TYPE_UVEC2:
member_type = TYPE_UINT;
break;
case TYPE_MAT2:
member_type = TYPE_VEC2;
break;
default:
break;
}
break;
case TYPE_BVEC3:
case TYPE_VEC3:
case TYPE_IVEC3:
case TYPE_UVEC3:
case TYPE_MAT3:
if (index->type == Node::TYPE_CONSTANT) {
uint32_t index_constant = static_cast<ConstantNode *>(index)->values[0].uint;
if (index_constant >= 3) {
_set_error("Index out of range (0-2)");
return nullptr;
}
}
switch (expr->get_datatype()) {
case TYPE_BVEC3:
member_type = TYPE_BOOL;
break;
case TYPE_VEC3:
member_type = TYPE_FLOAT;
break;
case TYPE_IVEC3:
member_type = TYPE_INT;
break;
case TYPE_UVEC3:
member_type = TYPE_UINT;
break;
case TYPE_MAT3:
member_type = TYPE_VEC3;
break;
default:
break;
}
break;
case TYPE_BVEC4:
case TYPE_VEC4:
case TYPE_IVEC4:
case TYPE_UVEC4:
case TYPE_MAT4:
if (index->type == Node::TYPE_CONSTANT) {
uint32_t index_constant = static_cast<ConstantNode *>(index)->values[0].uint;
if (index_constant >= 4) {
_set_error("Index out of range (0-3)");
return nullptr;
}
}
switch (expr->get_datatype()) {
case TYPE_BVEC4:
member_type = TYPE_BOOL;
break;
case TYPE_VEC4:
member_type = TYPE_FLOAT;
break;
case TYPE_IVEC4:
member_type = TYPE_INT;
break;
case TYPE_UVEC4:
member_type = TYPE_UINT;
break;
case TYPE_MAT4:
member_type = TYPE_VEC4;
break;
default:
break;
}
break;
default: {
_set_error("Object of type '" + (expr->get_datatype() == TYPE_STRUCT ? expr->get_datatype_name() : get_datatype_name(expr->get_datatype())) + "' can't be indexed");
return nullptr;
}
}
OperatorNode *op = alloc_node<OperatorNode>();
op->op = OP_INDEX;
op->return_cache = member_type;
op->arguments.push_back(expr);
op->arguments.push_back(index);
expr = op;
tk = _get_token();
if (tk.type != TK_BRACKET_CLOSE) {
_set_error("Expected ']' after indexing expression");
return nullptr;
}
} else if (tk.type == TK_OP_INCREMENT || tk.type == TK_OP_DECREMENT) {
OperatorNode *op = alloc_node<OperatorNode>();
op->op = tk.type == TK_OP_DECREMENT ? OP_POST_DECREMENT : OP_POST_INCREMENT;
op->arguments.push_back(expr);
if (!_validate_operator(op, &op->return_cache)) {
_set_error("Invalid base type for increment/decrement operator");
return nullptr;
}
if (!_validate_assign(expr, p_function_info)) {
_set_error("Invalid use of increment/decrement operator in constant expression.");
return nullptr;
}
expr = op;
} else {
_set_tkpos(pos2);
break;
}
}
Expression e;
e.is_op = false;
e.node = expr;
expression.push_back(e);
pos = _get_tkpos();
tk = _get_token();
if (is_token_operator(tk.type)) {
Expression o;
o.is_op = true;
switch (tk.type) {
case TK_OP_EQUAL:
o.op = OP_EQUAL;
break;
case TK_OP_NOT_EQUAL:
o.op = OP_NOT_EQUAL;
break;
case TK_OP_LESS:
o.op = OP_LESS;
break;
case TK_OP_LESS_EQUAL:
o.op = OP_LESS_EQUAL;
break;
case TK_OP_GREATER:
o.op = OP_GREATER;
break;
case TK_OP_GREATER_EQUAL:
o.op = OP_GREATER_EQUAL;
break;
case TK_OP_AND:
o.op = OP_AND;
break;
case TK_OP_OR:
o.op = OP_OR;
break;
case TK_OP_ADD:
o.op = OP_ADD;
break;
case TK_OP_SUB:
o.op = OP_SUB;
break;
case TK_OP_MUL:
o.op = OP_MUL;
break;
case TK_OP_DIV:
o.op = OP_DIV;
break;
case TK_OP_MOD:
o.op = OP_MOD;
break;
case TK_OP_SHIFT_LEFT:
o.op = OP_SHIFT_LEFT;
break;
case TK_OP_SHIFT_RIGHT:
o.op = OP_SHIFT_RIGHT;
break;
case TK_OP_ASSIGN:
o.op = OP_ASSIGN;
break;
case TK_OP_ASSIGN_ADD:
o.op = OP_ASSIGN_ADD;
break;
case TK_OP_ASSIGN_SUB:
o.op = OP_ASSIGN_SUB;
break;
case TK_OP_ASSIGN_MUL:
o.op = OP_ASSIGN_MUL;
break;
case TK_OP_ASSIGN_DIV:
o.op = OP_ASSIGN_DIV;
break;
case TK_OP_ASSIGN_MOD:
o.op = OP_ASSIGN_MOD;
break;
case TK_OP_ASSIGN_SHIFT_LEFT:
o.op = OP_ASSIGN_SHIFT_LEFT;
break;
case TK_OP_ASSIGN_SHIFT_RIGHT:
o.op = OP_ASSIGN_SHIFT_RIGHT;
break;
case TK_OP_ASSIGN_BIT_AND:
o.op = OP_ASSIGN_BIT_AND;
break;
case TK_OP_ASSIGN_BIT_OR:
o.op = OP_ASSIGN_BIT_OR;
break;
case TK_OP_ASSIGN_BIT_XOR:
o.op = OP_ASSIGN_BIT_XOR;
break;
case TK_OP_BIT_AND:
o.op = OP_BIT_AND;
break;
case TK_OP_BIT_OR:
o.op = OP_BIT_OR;
break;
case TK_OP_BIT_XOR:
o.op = OP_BIT_XOR;
break;
case TK_QUESTION:
o.op = OP_SELECT_IF;
break;
case TK_COLON:
o.op = OP_SELECT_ELSE;
break;
default: {
_set_error("Invalid token for operator: " + get_token_text(tk));
return nullptr;
}
}
expression.push_back(o);
} else {
_set_tkpos(pos); //something else, so rollback and end
break;
}
}
/* Reduce the set set of expressions and place them in an operator tree, respecting precedence */
while (expression.size() > 1) {
int next_op = -1;
int min_priority = 0xFFFFF;
bool is_unary = false;
bool is_ternary = false;
for (int i = 0; i < expression.size(); i++) {
if (!expression[i].is_op) {
continue;
}
bool unary = false;
bool ternary = false;
int priority;
switch (expression[i].op) {
case OP_EQUAL:
priority = 8;
break;
case OP_NOT_EQUAL:
priority = 8;
break;
case OP_LESS:
priority = 7;
break;
case OP_LESS_EQUAL:
priority = 7;
break;
case OP_GREATER:
priority = 7;
break;
case OP_GREATER_EQUAL:
priority = 7;
break;
case OP_AND:
priority = 12;
break;
case OP_OR:
priority = 14;
break;
case OP_NOT:
priority = 3;
unary = true;
break;
case OP_NEGATE:
priority = 3;
unary = true;
break;
case OP_ADD:
priority = 5;
break;
case OP_SUB:
priority = 5;
break;
case OP_MUL:
priority = 4;
break;
case OP_DIV:
priority = 4;
break;
case OP_MOD:
priority = 4;
break;
case OP_SHIFT_LEFT:
priority = 6;
break;
case OP_SHIFT_RIGHT:
priority = 6;
break;
case OP_ASSIGN:
priority = 16;
break;
case OP_ASSIGN_ADD:
priority = 16;
break;
case OP_ASSIGN_SUB:
priority = 16;
break;
case OP_ASSIGN_MUL:
priority = 16;
break;
case OP_ASSIGN_DIV:
priority = 16;
break;
case OP_ASSIGN_MOD:
priority = 16;
break;
case OP_ASSIGN_SHIFT_LEFT:
priority = 16;
break;
case OP_ASSIGN_SHIFT_RIGHT:
priority = 16;
break;
case OP_ASSIGN_BIT_AND:
priority = 16;
break;
case OP_ASSIGN_BIT_OR:
priority = 16;
break;
case OP_ASSIGN_BIT_XOR:
priority = 16;
break;
case OP_BIT_AND:
priority = 9;
break;
case OP_BIT_OR:
priority = 11;
break;
case OP_BIT_XOR:
priority = 10;
break;
case OP_BIT_INVERT:
priority = 3;
unary = true;
break;
case OP_INCREMENT:
priority = 3;
unary = true;
break;
case OP_DECREMENT:
priority = 3;
unary = true;
break;
case OP_SELECT_IF:
priority = 15;
ternary = true;
break;
case OP_SELECT_ELSE:
priority = 15;
ternary = true;
break;
default:
ERR_FAIL_V(nullptr); //unexpected operator
}
if (priority < min_priority) {
// < is used for left to right (default)
// <= is used for right to left
next_op = i;
min_priority = priority;
is_unary = unary;
is_ternary = ternary;
}
}
ERR_FAIL_COND_V(next_op == -1, nullptr);
// OK! create operator..
// OK! create operator..
if (is_unary) {
int expr_pos = next_op;
while (expression[expr_pos].is_op) {
expr_pos++;
if (expr_pos == expression.size()) {
//can happen..
_set_error("Unexpected end of expression...");
return nullptr;
}
}
//consecutively do unary operators
for (int i = expr_pos - 1; i >= next_op; i--) {
OperatorNode *op = alloc_node<OperatorNode>();
op->op = expression[i].op;
if ((op->op == OP_INCREMENT || op->op == OP_DECREMENT) && !_validate_assign(expression[i + 1].node, p_function_info)) {
_set_error("Can't use increment/decrement operator in constant expression.");
return nullptr;
}
op->arguments.push_back(expression[i + 1].node);
expression.write[i].is_op = false;
expression.write[i].node = op;
if (!_validate_operator(op, &op->return_cache)) {
String at;
for (int j = 0; j < op->arguments.size(); j++) {
if (j > 0) {
at += " and ";
}
at += get_datatype_name(op->arguments[j]->get_datatype());
}
_set_error("Invalid arguments to unary operator '" + get_operator_text(op->op) + "' :" + at);
return nullptr;
}
expression.remove(i + 1);
}
} else if (is_ternary) {
if (next_op < 1 || next_op >= (expression.size() - 1)) {
_set_error("Parser bug...");
ERR_FAIL_V(nullptr);
}
if (next_op + 2 >= expression.size() || !expression[next_op + 2].is_op || expression[next_op + 2].op != OP_SELECT_ELSE) {
_set_error("Missing matching ':' for select operator");
return nullptr;
}
OperatorNode *op = alloc_node<OperatorNode>();
op->op = expression[next_op].op;
op->arguments.push_back(expression[next_op - 1].node);
op->arguments.push_back(expression[next_op + 1].node);
op->arguments.push_back(expression[next_op + 3].node);
expression.write[next_op - 1].is_op = false;
expression.write[next_op - 1].node = op;
if (!_validate_operator(op, &op->return_cache)) {
String at;
for (int i = 0; i < op->arguments.size(); i++) {
if (i > 0) {
at += " and ";
}
at += get_datatype_name(op->arguments[i]->get_datatype());
}
_set_error("Invalid argument to ternary ?: operator: " + at);
return nullptr;
}
for (int i = 0; i < 4; i++) {
expression.remove(next_op);
}
} else {
if (next_op < 1 || next_op >= (expression.size() - 1)) {
_set_error("Parser bug...");
ERR_FAIL_V(nullptr);
}
OperatorNode *op = alloc_node<OperatorNode>();
op->op = expression[next_op].op;
if (expression[next_op - 1].is_op) {
_set_error("Parser bug...");
ERR_FAIL_V(nullptr);
}
if (_is_operator_assign(op->op)) {
String assign_message;
if (!_validate_assign(expression[next_op - 1].node, p_function_info, &assign_message)) {
_set_error(assign_message);
return nullptr;
}
}
if (expression[next_op + 1].is_op) {
// this is not invalid and can really appear
// but it becomes invalid anyway because no binary op
// can be followed by a unary op in a valid combination,
// due to how precedence works, unaries will always disappear first
_set_error("Parser bug...");
}
op->arguments.push_back(expression[next_op - 1].node); //expression goes as left
op->arguments.push_back(expression[next_op + 1].node); //next expression goes as right
expression.write[next_op - 1].node = op;
//replace all 3 nodes by this operator and make it an expression
if (!_validate_operator(op, &op->return_cache)) {
String at;
for (int i = 0; i < op->arguments.size(); i++) {
if (i > 0) {
at += " and ";
}
if (op->arguments[i]->get_datatype() == TYPE_STRUCT) {
at += op->arguments[i]->get_datatype_name();
} else {
at += get_datatype_name(op->arguments[i]->get_datatype());
}
}
_set_error("Invalid arguments to operator '" + get_operator_text(op->op) + "' :" + at);
return nullptr;
}
expression.remove(next_op);
expression.remove(next_op);
}
}
return expression[0].node;
}
ShaderLanguage::Node *ShaderLanguage::_reduce_expression(BlockNode *p_block, ShaderLanguage::Node *p_node) {
if (p_node->type != Node::TYPE_OPERATOR) {
return p_node;
}
//for now only reduce simple constructors
OperatorNode *op = static_cast<OperatorNode *>(p_node);
if (op->op == OP_CONSTRUCT) {
ERR_FAIL_COND_V(op->arguments[0]->type != Node::TYPE_VARIABLE, p_node);
DataType type = op->get_datatype();
DataType base = get_scalar_type(type);
int cardinality = get_cardinality(type);
Vector<ConstantNode::Value> values;
for (int i = 1; i < op->arguments.size(); i++) {
op->arguments.write[i] = _reduce_expression(p_block, op->arguments[i]);
if (op->arguments[i]->type == Node::TYPE_CONSTANT) {
ConstantNode *cn = static_cast<ConstantNode *>(op->arguments[i]);
if (get_scalar_type(cn->datatype) == base) {
for (int j = 0; j < cn->values.size(); j++) {
values.push_back(cn->values[j]);
}
} else if (get_scalar_type(cn->datatype) == cn->datatype) {
ConstantNode::Value v;
if (!convert_constant(cn, base, &v)) {
return p_node;
}
values.push_back(v);
} else {
return p_node;
}
} else {
return p_node;
}
}
if (values.size() == 1) {
if (type >= TYPE_MAT2 && type <= TYPE_MAT4) {
ConstantNode::Value value = values[0];
ConstantNode::Value zero;
zero.real = 0.0f;
int size = 2 + (type - TYPE_MAT2);
values.clear();
for (int i = 0; i < size; i++) {
for (int j = 0; j < size; j++) {
values.push_back(i == j ? value : zero);
}
}
} else {
ConstantNode::Value value = values[0];
for (int i = 1; i < cardinality; i++) {
values.push_back(value);
}
}
} else if (values.size() != cardinality) {
ERR_PRINT("Failed to reduce expression, values and cardinality mismatch.");
return p_node;
}
ConstantNode *cn = alloc_node<ConstantNode>();
cn->datatype = op->get_datatype();
cn->values = values;
return cn;
} else if (op->op == OP_NEGATE) {
op->arguments.write[0] = _reduce_expression(p_block, op->arguments[0]);
if (op->arguments[0]->type == Node::TYPE_CONSTANT) {
ConstantNode *cn = static_cast<ConstantNode *>(op->arguments[0]);
DataType base = get_scalar_type(cn->datatype);
Vector<ConstantNode::Value> values;
for (int i = 0; i < cn->values.size(); i++) {
ConstantNode::Value nv;
switch (base) {
case TYPE_BOOL: {
nv.boolean = !cn->values[i].boolean;
} break;
case TYPE_INT: {
nv.sint = -cn->values[i].sint;
} break;
case TYPE_UINT: {
// Intentionally wrap the unsigned int value, because GLSL does.
nv.uint = 0 - cn->values[i].uint;
} break;
case TYPE_FLOAT: {
nv.real = -cn->values[i].real;
} break;
default: {
}
}
values.push_back(nv);
}
cn->values = values;
return cn;
}
}
return p_node;
}
ShaderLanguage::Node *ShaderLanguage::_parse_and_reduce_expression(BlockNode *p_block, const FunctionInfo &p_function_info) {
ShaderLanguage::Node *expr = _parse_expression(p_block, p_function_info);
if (!expr) { //errored
return nullptr;
}
expr = _reduce_expression(p_block, expr);
return expr;
}
Error ShaderLanguage::_parse_block(BlockNode *p_block, const FunctionInfo &p_function_info, bool p_just_one, bool p_can_break, bool p_can_continue) {
while (true) {
TkPos pos = _get_tkpos();
Token tk = _get_token();
if (p_block && p_block->block_type == BlockNode::BLOCK_TYPE_SWITCH) {
if (tk.type != TK_CF_CASE && tk.type != TK_CF_DEFAULT && tk.type != TK_CURLY_BRACKET_CLOSE) {
_set_error("Switch may contains only case and default blocks");
return ERR_PARSE_ERROR;
}
}
bool is_struct = shader->structs.has(tk.text);
if (tk.type == TK_CURLY_BRACKET_CLOSE) { //end of block
if (p_just_one) {
_set_error("Unexpected '}'");
return ERR_PARSE_ERROR;
}
return OK;
} else if (tk.type == TK_CONST || is_token_precision(tk.type) || is_token_nonvoid_datatype(tk.type) || is_struct) {
String struct_name = "";
if (is_struct) {
struct_name = tk.text;
}
bool is_const = false;
if (tk.type == TK_CONST) {
is_const = true;
tk = _get_token();
if (!is_struct) {
is_struct = shader->structs.has(tk.text); // check again.
struct_name = tk.text;
}
}
DataPrecision precision = PRECISION_DEFAULT;
if (is_token_precision(tk.type)) {
precision = get_token_precision(tk.type);
tk = _get_token();
if (!is_struct) {
is_struct = shader->structs.has(tk.text); // check again.
}
if (is_struct && precision != PRECISION_DEFAULT) {
_set_error("Precision modifier cannot be used on structs.");
return ERR_PARSE_ERROR;
}
if (!is_token_nonvoid_datatype(tk.type)) {
_set_error("Expected datatype after precision");
return ERR_PARSE_ERROR;
}
}
if (!is_struct) {
if (!is_token_variable_datatype(tk.type)) {
_set_error("Invalid data type for variable (samplers not allowed)");
return ERR_PARSE_ERROR;
}
}
DataType type = is_struct ? TYPE_STRUCT : get_token_datatype(tk.type);
if (_validate_datatype(type) != OK) {
return ERR_PARSE_ERROR;
}
tk = _get_token();
Node *vardecl = nullptr;
while (true) {
if (tk.type != TK_IDENTIFIER) {
_set_error("Expected identifier after type");
return ERR_PARSE_ERROR;
}
StringName name = tk.text;
ShaderLanguage::IdentifierType itype;
if (_find_identifier(p_block, true, p_function_info, name, (ShaderLanguage::DataType *)nullptr, &itype)) {
if (itype != IDENTIFIER_FUNCTION) {
_set_error("Redefinition of '" + String(name) + "'");
return ERR_PARSE_ERROR;
}
}
BlockNode::Variable var;
var.type = type;
var.precision = precision;
var.line = tk_line;
var.array_size = 0;
var.is_const = is_const;
var.struct_name = struct_name;
tk = _get_token();
if (tk.type == TK_BRACKET_OPEN) {
bool unknown_size = false;
if (RenderingServer::get_singleton()->is_low_end() && is_const) {
_set_error("Local const arrays are supported only on high-end platform!");
return ERR_PARSE_ERROR;
}
ArrayDeclarationNode *node = alloc_node<ArrayDeclarationNode>();
if (is_struct) {
node->struct_name = struct_name;
node->datatype = TYPE_STRUCT;
} else {
node->datatype = type;
}
node->precision = precision;
node->is_const = is_const;
vardecl = (Node *)node;
ArrayDeclarationNode::Declaration decl;
decl.name = name;
decl.size = 0U;
pos = _get_tkpos();
tk = _get_token();
if (tk.type == TK_BRACKET_CLOSE) {
unknown_size = true;
} else {
if (tk.type != TK_INT_CONSTANT || ((int)tk.constant) <= 0) {
_set_tkpos(pos);
Node *n = _parse_and_reduce_expression(p_block, p_function_info);
if (n) {
if (n->type == Node::TYPE_VARIABLE) {
VariableNode *vn = static_cast<VariableNode *>(n);
if (vn) {
ConstantNode::Value v;
DataType data_type;
_find_identifier(p_block, false, p_function_info, vn->name, &data_type, nullptr, &is_const, nullptr, nullptr, &v);
if (is_const) {
if (data_type == TYPE_INT) {
int32_t value = v.sint;
if (value > 0) {
node->size_expression = n;
decl.size = (uint32_t)value;
}
} else if (data_type == TYPE_UINT) {
uint32_t value = v.uint;
if (value > 0U) {
node->size_expression = n;
decl.size = value;
}
}
}
}
} else if (n->type == Node::TYPE_OPERATOR) {
_set_error("Array size expressions are not yet implemented.");
return ERR_PARSE_ERROR;
}
}
} else if (((int)tk.constant) > 0) {
decl.size = (uint32_t)tk.constant;
}
if (decl.size == 0U) {
_set_error("Expected integer constant > 0 or ']'");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_BRACKET_CLOSE) {
_set_error("Expected ']'");
return ERR_PARSE_ERROR;
}
var.array_size = decl.size;
}
bool full_def = false;
tk = _get_token();
if (tk.type == TK_OP_ASSIGN) {
if (RenderingServer::get_singleton()->is_low_end()) {
_set_error("Array initialization is supported only on high-end platform!");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_CURLY_BRACKET_OPEN) {
if (unknown_size) {
_set_error("Expected '{'");
return ERR_PARSE_ERROR;
}
full_def = true;
DataPrecision precision2 = PRECISION_DEFAULT;
if (is_token_precision(tk.type)) {
precision2 = get_token_precision(tk.type);
tk = _get_token();
if (shader->structs.has(tk.text)) {
_set_error("Precision modifier cannot be used on structs.");
return ERR_PARSE_ERROR;
}
if (!is_token_nonvoid_datatype(tk.type)) {
_set_error("Expected datatype after precision");
return ERR_PARSE_ERROR;
}
}
DataType type2;
StringName struct_name2 = "";
if (shader->structs.has(tk.text)) {
type2 = TYPE_STRUCT;
struct_name2 = tk.text;
} else {
if (!is_token_variable_datatype(tk.type)) {
_set_error("Invalid data type for array");
return ERR_PARSE_ERROR;
}
type2 = get_token_datatype(tk.type);
}
int array_size2 = 0;
tk = _get_token();
if (tk.type == TK_BRACKET_OPEN) {
TkPos pos2 = _get_tkpos();
tk = _get_token();
if (tk.type == TK_BRACKET_CLOSE) {
array_size2 = var.array_size;
tk = _get_token();
} else {
_set_tkpos(pos2);
Node *n = _parse_and_reduce_expression(p_block, p_function_info);
if (!n || n->type != Node::TYPE_CONSTANT || n->get_datatype() != TYPE_INT) {
_set_error("Expected single integer constant > 0");
return ERR_PARSE_ERROR;
}
ConstantNode *cnode = (ConstantNode *)n;
if (cnode->values.size() == 1) {
array_size2 = cnode->values[0].sint;
if (array_size2 <= 0) {
_set_error("Expected single integer constant > 0");
return ERR_PARSE_ERROR;
}
} else {
_set_error("Expected single integer constant > 0");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_BRACKET_CLOSE) {
_set_error("Expected ']'");
return ERR_PARSE_ERROR;
} else {
tk = _get_token();
}
}
} else {
_set_error("Expected '['");
return ERR_PARSE_ERROR;
}
if (precision != precision2 || type != type2 || struct_name != struct_name2 || var.array_size != array_size2) {
String error_str = "Cannot convert from '";
if (precision2 != PRECISION_DEFAULT) {
error_str += get_precision_name(precision2);
error_str += " ";
}
if (type2 == TYPE_STRUCT) {
error_str += struct_name2;
} else {
error_str += get_datatype_name(type2);
}
error_str += "[";
error_str += itos(array_size2);
error_str += "]'";
error_str += " to '";
if (precision != PRECISION_DEFAULT) {
error_str += get_precision_name(precision);
error_str += " ";
}
if (type == TYPE_STRUCT) {
error_str += struct_name;
} else {
error_str += get_datatype_name(type);
}
error_str += "[";
error_str += itos(var.array_size);
error_str += "]'";
_set_error(error_str);
return ERR_PARSE_ERROR;
}
}
bool curly = tk.type == TK_CURLY_BRACKET_OPEN;
if (unknown_size) {
if (!curly) {
_set_error("Expected '{'");
return ERR_PARSE_ERROR;
}
} else {
if (full_def) {
if (curly) {
_set_error("Expected '('");
return ERR_PARSE_ERROR;
}
}
}
if (tk.type == TK_PARENTHESIS_OPEN || curly) { // initialization
while (true) {
Node *n = _parse_and_reduce_expression(p_block, p_function_info);
if (!n) {
return ERR_PARSE_ERROR;
}
if (node->is_const && n->type == Node::TYPE_OPERATOR && ((OperatorNode *)n)->op == OP_CALL) {
_set_error("Expected constant expression");
return ERR_PARSE_ERROR;
}
if (var.type != n->get_datatype() || struct_name != n->get_datatype_name()) {
_set_error("Invalid assignment of '" + (n->get_datatype() == TYPE_STRUCT ? n->get_datatype_name() : get_datatype_name(n->get_datatype())) + "' to '" + (var.type == TYPE_STRUCT ? struct_name : get_datatype_name(var.type)) + "'");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type == TK_COMMA) {
decl.initializer.push_back(n);
continue;
} else if (!curly && tk.type == TK_PARENTHESIS_CLOSE) {
decl.initializer.push_back(n);
break;
} else if (curly && tk.type == TK_CURLY_BRACKET_CLOSE) {
decl.initializer.push_back(n);
break;
} else {
if (curly) {
_set_error("Expected '}' or ','");
} else {
_set_error("Expected ')' or ','");
}
return ERR_PARSE_ERROR;
}
}
if (unknown_size) {
decl.size = decl.initializer.size();
var.array_size = decl.initializer.size();
} else if (decl.initializer.size() != var.array_size) {
_set_error("Array size mismatch");
return ERR_PARSE_ERROR;
}
tk = _get_token();
}
} else {
if (unknown_size) {
_set_error("Expected array initialization");
return ERR_PARSE_ERROR;
}
if (node->is_const) {
_set_error("Expected initialization of constant");
return ERR_PARSE_ERROR;
}
}
node->declarations.push_back(decl);
} else if (tk.type == TK_OP_ASSIGN) {
VariableDeclarationNode *node = alloc_node<VariableDeclarationNode>();
if (is_struct) {
node->struct_name = struct_name;
node->datatype = TYPE_STRUCT;
} else {
node->datatype = type;
}
node->precision = precision;
node->is_const = is_const;
vardecl = (Node *)node;
VariableDeclarationNode::Declaration decl;
decl.name = name;
decl.initializer = nullptr;
//variable created with assignment! must parse an expression
Node *n = _parse_and_reduce_expression(p_block, p_function_info);
if (!n) {
return ERR_PARSE_ERROR;
}
if (node->is_const && n->type == Node::TYPE_OPERATOR && ((OperatorNode *)n)->op == OP_CALL) {
_set_error("Expected constant expression after '='");
return ERR_PARSE_ERROR;
}
decl.initializer = n;
if (n->type == Node::TYPE_CONSTANT) {
ConstantNode *const_node = static_cast<ConstantNode *>(n);
if (const_node && const_node->values.size() == 1) {
var.value = const_node->values[0];
}
}
if (var.type == TYPE_STRUCT ? (var.struct_name != n->get_datatype_name()) : (var.type != n->get_datatype())) {
_set_error("Invalid assignment of '" + (n->get_datatype() == TYPE_STRUCT ? n->get_datatype_name() : get_datatype_name(n->get_datatype())) + "' to '" + (var.type == TYPE_STRUCT ? String(var.struct_name) : get_datatype_name(var.type)) + "'");
return ERR_PARSE_ERROR;
}
tk = _get_token();
node->declarations.push_back(decl);
} else {
if (is_const) {
_set_error("Expected initialization of constant");
return ERR_PARSE_ERROR;
}
VariableDeclarationNode *node = alloc_node<VariableDeclarationNode>();
if (is_struct) {
node->struct_name = struct_name;
node->datatype = TYPE_STRUCT;
} else {
node->datatype = type;
}
node->precision = precision;
vardecl = (Node *)node;
VariableDeclarationNode::Declaration decl;
decl.name = name;
decl.initializer = nullptr;
node->declarations.push_back(decl);
}
p_block->statements.push_back(vardecl);
p_block->variables[name] = var;
if (tk.type == TK_COMMA) {
if (p_block->block_type == BlockNode::BLOCK_TYPE_FOR) {
_set_error("Multiple declarations in 'for' loop are not implemented yet.");
return ERR_PARSE_ERROR;
}
tk = _get_token();
//another variable
} else if (tk.type == TK_SEMICOLON) {
break;
} else {
_set_error("Expected ',' or ';' after variable");
return ERR_PARSE_ERROR;
}
}
} else if (tk.type == TK_CURLY_BRACKET_OPEN) {
//a sub block, just because..
BlockNode *block = alloc_node<BlockNode>();
block->parent_block = p_block;
if (_parse_block(block, p_function_info, false, p_can_break, p_can_continue) != OK) {
return ERR_PARSE_ERROR;
}
p_block->statements.push_back(block);
} else if (tk.type == TK_CF_IF) {
//if () {}
tk = _get_token();
if (tk.type != TK_PARENTHESIS_OPEN) {
_set_error("Expected '(' after if");
return ERR_PARSE_ERROR;
}
ControlFlowNode *cf = alloc_node<ControlFlowNode>();
cf->flow_op = FLOW_OP_IF;
Node *n = _parse_and_reduce_expression(p_block, p_function_info);
if (!n) {
return ERR_PARSE_ERROR;
}
if (n->get_datatype() != TYPE_BOOL) {
_set_error("Expected boolean expression");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_PARENTHESIS_CLOSE) {
_set_error("Expected ')' after expression");
return ERR_PARSE_ERROR;
}
BlockNode *block = alloc_node<BlockNode>();
block->parent_block = p_block;
cf->expressions.push_back(n);
cf->blocks.push_back(block);
p_block->statements.push_back(cf);
Error err = _parse_block(block, p_function_info, true, p_can_break, p_can_continue);
if (err) {
return err;
}
pos = _get_tkpos();
tk = _get_token();
if (tk.type == TK_CF_ELSE) {
block = alloc_node<BlockNode>();
block->parent_block = p_block;
cf->blocks.push_back(block);
err = _parse_block(block, p_function_info, true, p_can_break, p_can_continue);
} else {
_set_tkpos(pos); //rollback
}
} else if (tk.type == TK_CF_SWITCH) {
if (RenderingServer::get_singleton()->is_low_end()) {
_set_error("\"switch\" operator is supported only on high-end platform!");
return ERR_PARSE_ERROR;
}
// switch() {}
tk = _get_token();
if (tk.type != TK_PARENTHESIS_OPEN) {
_set_error("Expected '(' after switch");
return ERR_PARSE_ERROR;
}
ControlFlowNode *cf = alloc_node<ControlFlowNode>();
cf->flow_op = FLOW_OP_SWITCH;
Node *n = _parse_and_reduce_expression(p_block, p_function_info);
if (!n) {
return ERR_PARSE_ERROR;
}
if (n->get_datatype() != TYPE_INT) {
_set_error("Expected integer expression");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_PARENTHESIS_CLOSE) {
_set_error("Expected ')' after expression");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_CURLY_BRACKET_OPEN) {
_set_error("Expected '{' after switch statement");
return ERR_PARSE_ERROR;
}
BlockNode *switch_block = alloc_node<BlockNode>();
switch_block->block_type = BlockNode::BLOCK_TYPE_SWITCH;
switch_block->parent_block = p_block;
cf->expressions.push_back(n);
cf->blocks.push_back(switch_block);
p_block->statements.push_back(cf);
int prev_type = TK_CF_CASE;
while (true) { // Go-through multiple cases.
if (_parse_block(switch_block, p_function_info, true, true, false) != OK) {
return ERR_PARSE_ERROR;
}
pos = _get_tkpos();
tk = _get_token();
if (tk.type == TK_CF_CASE || tk.type == TK_CF_DEFAULT) {
if (prev_type == TK_CF_DEFAULT) {
if (tk.type == TK_CF_CASE) {
_set_error("Cases must be defined before default case.");
return ERR_PARSE_ERROR;
} else if (prev_type == TK_CF_DEFAULT) {
_set_error("Default case must be defined only once.");
return ERR_PARSE_ERROR;
}
}
prev_type = tk.type;
_set_tkpos(pos);
continue;
} else {
Set<int> constants;
for (int i = 0; i < switch_block->statements.size(); i++) { // Checks for duplicates.
ControlFlowNode *flow = (ControlFlowNode *)switch_block->statements[i];
if (flow) {
if (flow->flow_op == FLOW_OP_CASE) {
if (flow->expressions[0]->type == Node::TYPE_CONSTANT) {
ConstantNode *cn = static_cast<ConstantNode *>(flow->expressions[0]);
if (!cn || cn->values.is_empty()) {
return ERR_PARSE_ERROR;
}
if (constants.has(cn->values[0].sint)) {
_set_error("Duplicated case label: '" + itos(cn->values[0].sint) + "'");
return ERR_PARSE_ERROR;
}
constants.insert(cn->values[0].sint);
} else if (flow->expressions[0]->type == Node::TYPE_VARIABLE) {
VariableNode *vn = static_cast<VariableNode *>(flow->expressions[0]);
if (!vn) {
return ERR_PARSE_ERROR;
}
ConstantNode::Value v;
_find_identifier(p_block, false, p_function_info, vn->name, nullptr, nullptr, nullptr, nullptr, nullptr, &v);
if (constants.has(v.sint)) {
_set_error("Duplicated case label: '" + itos(v.sint) + "'");
return ERR_PARSE_ERROR;
}
constants.insert(v.sint);
}
} else if (flow->flow_op == FLOW_OP_DEFAULT) {
continue;
} else {
return ERR_PARSE_ERROR;
}
} else {
return ERR_PARSE_ERROR;
}
}
break;
}
}
} else if (tk.type == TK_CF_CASE) {
// case x : break; | return;
if (p_block && p_block->block_type == BlockNode::BLOCK_TYPE_CASE) {
_set_tkpos(pos);
return OK;
}
if (!p_block || (p_block->block_type != BlockNode::BLOCK_TYPE_SWITCH)) {
_set_error("case must be placed within switch block");
return ERR_PARSE_ERROR;
}
tk = _get_token();
int sign = 1;
if (tk.type == TK_OP_SUB) {
sign = -1;
tk = _get_token();
}
Node *n = nullptr;
if (tk.type != TK_INT_CONSTANT) {
bool correct_constant_expression = false;
DataType data_type;
if (tk.type == TK_IDENTIFIER) {
bool is_const;
_find_identifier(p_block, false, p_function_info, tk.text, &data_type, nullptr, &is_const);
if (is_const) {
if (data_type == TYPE_INT) {
correct_constant_expression = true;
}
}
}
if (!correct_constant_expression) {
_set_error("Expected integer constant");
return ERR_PARSE_ERROR;
}
VariableNode *vn = alloc_node<VariableNode>();
vn->name = tk.text;
n = vn;
} else {
ConstantNode::Value v;
v.sint = (int)tk.constant * sign;
ConstantNode *cn = alloc_node<ConstantNode>();
cn->values.push_back(v);
cn->datatype = TYPE_INT;
n = cn;
}
tk = _get_token();
if (tk.type != TK_COLON) {
_set_error("Expected ':'");
return ERR_PARSE_ERROR;
}
ControlFlowNode *cf = alloc_node<ControlFlowNode>();
cf->flow_op = FLOW_OP_CASE;
BlockNode *case_block = alloc_node<BlockNode>();
case_block->block_type = BlockNode::BLOCK_TYPE_CASE;
case_block->parent_block = p_block;
cf->expressions.push_back(n);
cf->blocks.push_back(case_block);
p_block->statements.push_back(cf);
Error err = _parse_block(case_block, p_function_info, false, true, false);
if (err) {
return err;
}
return OK;
} else if (tk.type == TK_CF_DEFAULT) {
if (p_block && p_block->block_type == BlockNode::BLOCK_TYPE_CASE) {
_set_tkpos(pos);
return OK;
}
if (!p_block || (p_block->block_type != BlockNode::BLOCK_TYPE_SWITCH)) {
_set_error("default must be placed within switch block");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_COLON) {
_set_error("Expected ':'");
return ERR_PARSE_ERROR;
}
ControlFlowNode *cf = alloc_node<ControlFlowNode>();
cf->flow_op = FLOW_OP_DEFAULT;
BlockNode *default_block = alloc_node<BlockNode>();
default_block->block_type = BlockNode::BLOCK_TYPE_DEFAULT;
default_block->parent_block = p_block;
cf->blocks.push_back(default_block);
p_block->statements.push_back(cf);
Error err = _parse_block(default_block, p_function_info, false, true, false);
if (err) {
return err;
}
return OK;
} else if (tk.type == TK_CF_DO || tk.type == TK_CF_WHILE) {
// do {} while()
// while() {}
bool is_do = tk.type == TK_CF_DO;
BlockNode *do_block = nullptr;
if (is_do) {
do_block = alloc_node<BlockNode>();
do_block->parent_block = p_block;
Error err = _parse_block(do_block, p_function_info, true, true, true);
if (err) {
return err;
}
tk = _get_token();
if (tk.type != TK_CF_WHILE) {
_set_error("Expected while after do");
return ERR_PARSE_ERROR;
}
}
tk = _get_token();
if (tk.type != TK_PARENTHESIS_OPEN) {
_set_error("Expected '(' after while");
return ERR_PARSE_ERROR;
}
ControlFlowNode *cf = alloc_node<ControlFlowNode>();
if (is_do) {
cf->flow_op = FLOW_OP_DO;
} else {
cf->flow_op = FLOW_OP_WHILE;
}
Node *n = _parse_and_reduce_expression(p_block, p_function_info);
if (!n) {
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_PARENTHESIS_CLOSE) {
_set_error("Expected ')' after expression");
return ERR_PARSE_ERROR;
}
if (!is_do) {
BlockNode *block = alloc_node<BlockNode>();
block->parent_block = p_block;
cf->expressions.push_back(n);
cf->blocks.push_back(block);
p_block->statements.push_back(cf);
Error err = _parse_block(block, p_function_info, true, true, true);
if (err) {
return err;
}
} else {
cf->expressions.push_back(n);
cf->blocks.push_back(do_block);
p_block->statements.push_back(cf);
tk = _get_token();
if (tk.type != TK_SEMICOLON) {
_set_error("Expected ';'");
return ERR_PARSE_ERROR;
}
}
} else if (tk.type == TK_CF_FOR) {
// for() {}
tk = _get_token();
if (tk.type != TK_PARENTHESIS_OPEN) {
_set_error("Expected '(' after for");
return ERR_PARSE_ERROR;
}
ControlFlowNode *cf = alloc_node<ControlFlowNode>();
cf->flow_op = FLOW_OP_FOR;
BlockNode *init_block = alloc_node<BlockNode>();
init_block->block_type = BlockNode::BLOCK_TYPE_FOR;
init_block->parent_block = p_block;
init_block->single_statement = true;
cf->blocks.push_back(init_block);
if (_parse_block(init_block, p_function_info, true, false, false) != OK) {
return ERR_PARSE_ERROR;
}
Node *n = _parse_and_reduce_expression(init_block, p_function_info);
if (!n) {
return ERR_PARSE_ERROR;
}
if (n->get_datatype() != TYPE_BOOL) {
_set_error("Middle expression is expected to be boolean.");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_SEMICOLON) {
_set_error("Expected ';' after middle expression");
return ERR_PARSE_ERROR;
}
cf->expressions.push_back(n);
n = _parse_and_reduce_expression(init_block, p_function_info);
if (!n) {
return ERR_PARSE_ERROR;
}
cf->expressions.push_back(n);
tk = _get_token();
if (tk.type != TK_PARENTHESIS_CLOSE) {
_set_error("Expected ')' after third expression");
return ERR_PARSE_ERROR;
}
BlockNode *block = alloc_node<BlockNode>();
block->parent_block = init_block;
cf->blocks.push_back(block);
p_block->statements.push_back(cf);
Error err = _parse_block(block, p_function_info, true, true, true);
if (err) {
return err;
}
} else if (tk.type == TK_CF_RETURN) {
//check return type
BlockNode *b = p_block;
if (b && b->parent_function && (b->parent_function->name == "vertex" || b->parent_function->name == "fragment" || b->parent_function->name == "light")) {
_set_error(vformat("Using 'return' in '%s' processor function results in undefined behavior!", b->parent_function->name));
return ERR_PARSE_ERROR;
}
while (b && !b->parent_function) {
b = b->parent_block;
}
if (!b) {
_set_error("Bug");
return ERR_BUG;
}
String return_struct_name = String(b->parent_function->return_struct_name);
ControlFlowNode *flow = alloc_node<ControlFlowNode>();
flow->flow_op = FLOW_OP_RETURN;
pos = _get_tkpos();
tk = _get_token();
if (tk.type == TK_SEMICOLON) {
//all is good
if (b->parent_function->return_type != TYPE_VOID) {
_set_error("Expected return with an expression of type '" + (return_struct_name != "" ? return_struct_name : get_datatype_name(b->parent_function->return_type)) + "'");
return ERR_PARSE_ERROR;
}
} else {
_set_tkpos(pos); //rollback, wants expression
Node *expr = _parse_and_reduce_expression(p_block, p_function_info);
if (!expr) {
return ERR_PARSE_ERROR;
}
if (b->parent_function->return_type != expr->get_datatype() || return_struct_name != expr->get_datatype_name()) {
_set_error("Expected return with an expression of type '" + (return_struct_name != "" ? return_struct_name : get_datatype_name(b->parent_function->return_type)) + "'");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_SEMICOLON) {
_set_error("Expected ';' after return expression");
return ERR_PARSE_ERROR;
}
flow->expressions.push_back(expr);
}
p_block->statements.push_back(flow);
BlockNode *block = p_block;
while (block) {
if (block->block_type == BlockNode::BLOCK_TYPE_CASE || block->block_type == BlockNode::BLOCK_TYPE_DEFAULT) {
return OK;
}
block = block->parent_block;
}
} else if (tk.type == TK_CF_DISCARD) {
//check return type
BlockNode *b = p_block;
while (b && !b->parent_function) {
b = b->parent_block;
}
if (!b) {
_set_error("Bug");
return ERR_BUG;
}
if (!b->parent_function->can_discard) {
_set_error("Use of 'discard' is not allowed here.");
return ERR_PARSE_ERROR;
}
ControlFlowNode *flow = alloc_node<ControlFlowNode>();
flow->flow_op = FLOW_OP_DISCARD;
pos = _get_tkpos();
tk = _get_token();
if (tk.type != TK_SEMICOLON) {
_set_error("Expected ';' after discard");
return ERR_PARSE_ERROR;
}
p_block->statements.push_back(flow);
} else if (tk.type == TK_CF_BREAK) {
if (!p_can_break) {
_set_error("'break' is not allowed outside of a loop or 'switch' statement");
return ERR_PARSE_ERROR;
}
ControlFlowNode *flow = alloc_node<ControlFlowNode>();
flow->flow_op = FLOW_OP_BREAK;
pos = _get_tkpos();
tk = _get_token();
if (tk.type != TK_SEMICOLON) {
_set_error("Expected ';' after break");
return ERR_PARSE_ERROR;
}
p_block->statements.push_back(flow);
BlockNode *block = p_block;
while (block) {
if (block->block_type == BlockNode::BLOCK_TYPE_CASE || block->block_type == BlockNode::BLOCK_TYPE_DEFAULT) {
return OK;
}
block = block->parent_block;
}
} else if (tk.type == TK_CF_CONTINUE) {
if (!p_can_continue) {
_set_error("'continue' is not allowed outside of a loop");
return ERR_PARSE_ERROR;
}
ControlFlowNode *flow = alloc_node<ControlFlowNode>();
flow->flow_op = FLOW_OP_CONTINUE;
pos = _get_tkpos();
tk = _get_token();
if (tk.type != TK_SEMICOLON) {
//all is good
_set_error("Expected ';' after continue");
return ERR_PARSE_ERROR;
}
p_block->statements.push_back(flow);
} else {
//nothing else, so expression
_set_tkpos(pos); //rollback
Node *expr = _parse_and_reduce_expression(p_block, p_function_info);
if (!expr) {
return ERR_PARSE_ERROR;
}
p_block->statements.push_back(expr);
tk = _get_token();
if (tk.type != TK_SEMICOLON) {
_set_error("Expected ';' after statement");
return ERR_PARSE_ERROR;
}
}
if (p_just_one) {
break;
}
}
return OK;
}
String ShaderLanguage::_get_shader_type_list(const Set<String> &p_shader_types) const {
// Return a list of shader types as an human-readable string
String valid_types;
for (const Set<String>::Element *E = p_shader_types.front(); E; E = E->next()) {
if (valid_types != String()) {
valid_types += ", ";
}
valid_types += "'" + E->get() + "'";
}
return valid_types;
}
String ShaderLanguage::_get_qualifier_str(ArgumentQualifier p_qualifier) const {
switch (p_qualifier) {
case ArgumentQualifier::ARGUMENT_QUALIFIER_IN:
return "in";
case ArgumentQualifier::ARGUMENT_QUALIFIER_OUT:
return "out";
case ArgumentQualifier::ARGUMENT_QUALIFIER_INOUT:
return "inout";
}
return "";
}
Error ShaderLanguage::_validate_datatype(DataType p_type) {
if (RenderingServer::get_singleton()->is_low_end()) {
bool invalid_type = false;
switch (p_type) {
case TYPE_UINT:
case TYPE_UVEC2:
case TYPE_UVEC3:
case TYPE_UVEC4:
case TYPE_ISAMPLER2D:
case TYPE_USAMPLER2D:
case TYPE_ISAMPLER3D:
case TYPE_USAMPLER3D:
case TYPE_USAMPLER2DARRAY:
case TYPE_ISAMPLER2DARRAY:
invalid_type = true;
break;
default:
break;
}
if (invalid_type) {
_set_error(vformat("\"%s\" type is supported only on high-end platform!", get_datatype_name(p_type)));
return ERR_UNAVAILABLE;
}
}
return OK;
}
Error ShaderLanguage::_parse_shader(const Map<StringName, FunctionInfo> &p_functions, const Vector<StringName> &p_render_modes, const Set<String> &p_shader_types) {
Token tk = _get_token();
if (tk.type != TK_SHADER_TYPE) {
_set_error("Expected 'shader_type' at the beginning of shader. Valid types are: " + _get_shader_type_list(p_shader_types));
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_IDENTIFIER) {
_set_error("Expected identifier after 'shader_type', indicating type of shader. Valid types are: " + _get_shader_type_list(p_shader_types));
return ERR_PARSE_ERROR;
}
String shader_type_identifier;
shader_type_identifier = tk.text;
if (!p_shader_types.has(shader_type_identifier)) {
_set_error("Invalid shader type. Valid types are: " + _get_shader_type_list(p_shader_types));
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_SEMICOLON) {
_set_error("Expected ';' after 'shader_type <type>'.");
}
tk = _get_token();
int texture_uniforms = 0;
int uniforms = 0;
int instance_index = 0;
ShaderNode::Uniform::Scope uniform_scope = ShaderNode::Uniform::SCOPE_LOCAL;
stages = &p_functions;
while (tk.type != TK_EOF) {
switch (tk.type) {
case TK_RENDER_MODE: {
while (true) {
StringName mode;
_get_completable_identifier(nullptr, COMPLETION_RENDER_MODE, mode);
if (mode == StringName()) {
_set_error("Expected identifier for render mode");
return ERR_PARSE_ERROR;
}
if (p_render_modes.find(mode) == -1) {
_set_error("Invalid render mode: '" + String(mode) + "'");
return ERR_PARSE_ERROR;
}
if (shader->render_modes.find(mode) != -1) {
_set_error("Duplicate render mode: '" + String(mode) + "'");
return ERR_PARSE_ERROR;
}
shader->render_modes.push_back(mode);
tk = _get_token();
if (tk.type == TK_COMMA) {
//all good, do nothing
} else if (tk.type == TK_SEMICOLON) {
break; //done
} else {
_set_error("Unexpected token: " + get_token_text(tk));
return ERR_PARSE_ERROR;
}
}
} break;
case TK_STRUCT: {
ShaderNode::Struct st;
DataType type;
tk = _get_token();
if (tk.type == TK_IDENTIFIER) {
st.name = tk.text;
if (shader->structs.has(st.name)) {
_set_error("Redefinition of '" + String(st.name) + "'");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_CURLY_BRACKET_OPEN) {
_set_error("Expected '{'");
return ERR_PARSE_ERROR;
}
} else {
_set_error("Expected struct identifier!");
return ERR_PARSE_ERROR;
}
StructNode *st_node = alloc_node<StructNode>();
st.shader_struct = st_node;
int member_count = 0;
Set<String> member_names;
while (true) { // variables list
tk = _get_token();
if (tk.type == TK_CURLY_BRACKET_CLOSE) {
break;
}
StringName struct_name = "";
bool struct_dt = false;
bool use_precision = false;
DataPrecision precision = DataPrecision::PRECISION_DEFAULT;
if (tk.type == TK_STRUCT) {
_set_error("nested structs are not allowed!");
return ERR_PARSE_ERROR;
}
if (is_token_precision(tk.type)) {
precision = get_token_precision(tk.type);
use_precision = true;
tk = _get_token();
}
if (shader->structs.has(tk.text)) {
struct_name = tk.text;
struct_dt = true;
if (use_precision) {
_set_error("Precision modifier cannot be used on structs.");
return ERR_PARSE_ERROR;
}
}
if (!is_token_datatype(tk.type) && !struct_dt) {
_set_error("Expected datatype.");
return ERR_PARSE_ERROR;
} else {
type = struct_dt ? TYPE_STRUCT : get_token_datatype(tk.type);
if (is_sampler_type(type)) {
_set_error("sampler datatype not allowed here");
return ERR_PARSE_ERROR;
} else if (type == TYPE_VOID) {
_set_error("void datatype not allowed here");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_IDENTIFIER) {
_set_error("Expected identifier!");
return ERR_PARSE_ERROR;
}
MemberNode *member = alloc_node<MemberNode>();
member->precision = precision;
member->datatype = type;
member->struct_name = struct_name;
member->name = tk.text;
if (member_names.has(member->name)) {
_set_error("Redefinition of '" + String(member->name) + "'");
return ERR_PARSE_ERROR;
}
member_names.insert(member->name);
tk = _get_token();
if (tk.type == TK_BRACKET_OPEN) {
tk = _get_token();
if (tk.type == TK_INT_CONSTANT && tk.constant > 0) {
member->array_size = (int)tk.constant;
tk = _get_token();
if (tk.type == TK_BRACKET_CLOSE) {
tk = _get_token();
if (tk.type != TK_SEMICOLON) {
_set_error("Expected ';'");
return ERR_PARSE_ERROR;
}
} else {
_set_error("Expected ']'");
return ERR_PARSE_ERROR;
}
} else {
_set_error("Expected single integer constant > 0");
return ERR_PARSE_ERROR;
}
}
st_node->members.push_back(member);
if (tk.type != TK_SEMICOLON) {
_set_error("Expected ']' or ';'");
return ERR_PARSE_ERROR;
}
member_count++;
}
}
if (member_count == 0) {
_set_error("Empty structs are not allowed!");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_SEMICOLON) {
_set_error("Expected ';'");
return ERR_PARSE_ERROR;
}
shader->structs[st.name] = st;
shader->vstructs.push_back(st); // struct's order is important!
} break;
case TK_GLOBAL: {
tk = _get_token();
if (tk.type != TK_UNIFORM) {
_set_error("Expected 'uniform' after 'global'");
return ERR_PARSE_ERROR;
}
uniform_scope = ShaderNode::Uniform::SCOPE_GLOBAL;
};
[[fallthrough]];
case TK_INSTANCE: {
if (uniform_scope == ShaderNode::Uniform::SCOPE_LOCAL) {
tk = _get_token();
if (tk.type != TK_UNIFORM) {
_set_error("Expected 'uniform' after 'instance'");
return ERR_PARSE_ERROR;
}
uniform_scope = ShaderNode::Uniform::SCOPE_INSTANCE;
}
};
[[fallthrough]];
case TK_UNIFORM:
case TK_VARYING: {
bool uniform = tk.type == TK_UNIFORM;
if (!uniform) {
if (shader_type_identifier == "particles" || shader_type_identifier == "sky") {
_set_error(vformat("Varyings cannot be used in '%s' shaders!", shader_type_identifier));
return ERR_PARSE_ERROR;
}
}
DataPrecision precision = PRECISION_DEFAULT;
DataInterpolation interpolation = INTERPOLATION_SMOOTH;
DataType type;
StringName name;
tk = _get_token();
if (is_token_interpolation(tk.type)) {
interpolation = get_token_interpolation(tk.type);
tk = _get_token();
}
if (is_token_precision(tk.type)) {
precision = get_token_precision(tk.type);
tk = _get_token();
}
if (!is_token_datatype(tk.type)) {
_set_error("Expected datatype. ");
return ERR_PARSE_ERROR;
}
type = get_token_datatype(tk.type);
if (type == TYPE_VOID) {
_set_error("void datatype not allowed here");
return ERR_PARSE_ERROR;
}
if (!uniform && (type < TYPE_FLOAT || type > TYPE_MAT4)) {
_set_error("Invalid type for varying, only float,vec2,vec3,vec4,mat2,mat3,mat4 or array of these types allowed.");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_IDENTIFIER) {
_set_error("Expected identifier!");
return ERR_PARSE_ERROR;
}
TkPos name_pos = _get_tkpos();
name = tk.text;
if (_find_identifier(nullptr, false, FunctionInfo(), name)) {
_set_error("Redefinition of '" + String(name) + "'");
return ERR_PARSE_ERROR;
}
if (has_builtin(p_functions, name)) {
_set_error("Redefinition of '" + String(name) + "'");
return ERR_PARSE_ERROR;
}
if (uniform) {
if (uniform_scope == ShaderNode::Uniform::SCOPE_GLOBAL) {
//validate global uniform
DataType gvtype = global_var_get_type_func(name);
if (gvtype == TYPE_MAX) {
_set_error("Global uniform '" + String(name) + "' does not exist. Create it in Project Settings.");
return ERR_PARSE_ERROR;
}
if (type != gvtype) {
_set_error("Global uniform '" + String(name) + "' must be of type '" + get_datatype_name(gvtype) + "'.");
return ERR_PARSE_ERROR;
}
}
ShaderNode::Uniform uniform2;
if (is_sampler_type(type)) {
if (uniform_scope == ShaderNode::Uniform::SCOPE_INSTANCE) {
_set_error("Uniforms with 'instance' qualifiers can't be of sampler type.");
return ERR_PARSE_ERROR;
}
uniform2.texture_order = texture_uniforms++;
uniform2.order = -1;
if (_validate_datatype(type) != OK) {
return ERR_PARSE_ERROR;
}
} else {
if (uniform_scope == ShaderNode::Uniform::SCOPE_INSTANCE && (type == TYPE_MAT2 || type == TYPE_MAT3 || type == TYPE_MAT4)) {
_set_error("Uniforms with 'instance' qualifiers can't be of matrix type.");
return ERR_PARSE_ERROR;
}
uniform2.texture_order = -1;
if (uniform_scope != ShaderNode::Uniform::SCOPE_INSTANCE) {
uniform2.order = uniforms++;
}
}
uniform2.type = type;
uniform2.scope = uniform_scope;
uniform2.precision = precision;
//todo parse default value
tk = _get_token();
int custom_instance_index = -1;
if (tk.type == TK_COLON) {
//hint
do {
tk = _get_token();
if (tk.type == TK_HINT_WHITE_TEXTURE) {
uniform2.hint = ShaderNode::Uniform::HINT_WHITE;
} else if (tk.type == TK_HINT_BLACK_TEXTURE) {
uniform2.hint = ShaderNode::Uniform::HINT_BLACK;
} else if (tk.type == TK_HINT_NORMAL_TEXTURE) {
uniform2.hint = ShaderNode::Uniform::HINT_NORMAL;
} else if (tk.type == TK_HINT_ROUGHNESS_NORMAL_TEXTURE) {
uniform2.hint = ShaderNode::Uniform::HINT_ROUGHNESS_NORMAL;
} else if (tk.type == TK_HINT_ROUGHNESS_R) {
uniform2.hint = ShaderNode::Uniform::HINT_ROUGHNESS_R;
} else if (tk.type == TK_HINT_ROUGHNESS_G) {
uniform2.hint = ShaderNode::Uniform::HINT_ROUGHNESS_G;
} else if (tk.type == TK_HINT_ROUGHNESS_B) {
uniform2.hint = ShaderNode::Uniform::HINT_ROUGHNESS_B;
} else if (tk.type == TK_HINT_ROUGHNESS_A) {
uniform2.hint = ShaderNode::Uniform::HINT_ROUGHNESS_A;
} else if (tk.type == TK_HINT_ROUGHNESS_GRAY) {
uniform2.hint = ShaderNode::Uniform::HINT_ROUGHNESS_GRAY;
} else if (tk.type == TK_HINT_ANISO_TEXTURE) {
uniform2.hint = ShaderNode::Uniform::HINT_ANISO;
} else if (tk.type == TK_HINT_ALBEDO_TEXTURE) {
uniform2.hint = ShaderNode::Uniform::HINT_ALBEDO;
} else if (tk.type == TK_HINT_BLACK_ALBEDO_TEXTURE) {
uniform2.hint = ShaderNode::Uniform::HINT_BLACK_ALBEDO;
} else if (tk.type == TK_HINT_COLOR) {
if (type != TYPE_VEC4) {
_set_error("Color hint is for vec4 only");
return ERR_PARSE_ERROR;
}
uniform2.hint = ShaderNode::Uniform::HINT_COLOR;
} else if (tk.type == TK_HINT_RANGE) {
uniform2.hint = ShaderNode::Uniform::HINT_RANGE;
if (type != TYPE_FLOAT && type != TYPE_INT) {
_set_error("Range hint is for float and int only");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_PARENTHESIS_OPEN) {
_set_error("Expected '(' after hint_range");
return ERR_PARSE_ERROR;
}
tk = _get_token();
float sign = 1.0;
if (tk.type == TK_OP_SUB) {
sign = -1.0;
tk = _get_token();
}
if (tk.type != TK_FLOAT_CONSTANT && tk.type != TK_INT_CONSTANT) {
_set_error("Expected integer constant");
return ERR_PARSE_ERROR;
}
uniform2.hint_range[0] = tk.constant;
uniform2.hint_range[0] *= sign;
tk = _get_token();
if (tk.type != TK_COMMA) {
_set_error("Expected ',' after integer constant");
return ERR_PARSE_ERROR;
}
tk = _get_token();
sign = 1.0;
if (tk.type == TK_OP_SUB) {
sign = -1.0;
tk = _get_token();
}
if (tk.type != TK_FLOAT_CONSTANT && tk.type != TK_INT_CONSTANT) {
_set_error("Expected integer constant after ','");
return ERR_PARSE_ERROR;
}
uniform2.hint_range[1] = tk.constant;
uniform2.hint_range[1] *= sign;
tk = _get_token();
if (tk.type == TK_COMMA) {
tk = _get_token();
if (tk.type != TK_FLOAT_CONSTANT && tk.type != TK_INT_CONSTANT) {
_set_error("Expected integer constant after ','");
return ERR_PARSE_ERROR;
}
uniform2.hint_range[2] = tk.constant;
tk = _get_token();
} else {
if (type == TYPE_INT) {
uniform2.hint_range[2] = 1;
} else {
uniform2.hint_range[2] = 0.001;
}
}
if (tk.type != TK_PARENTHESIS_CLOSE) {
_set_error("Expected ')'");
return ERR_PARSE_ERROR;
}
} else if (tk.type == TK_HINT_INSTANCE_INDEX) {
if (custom_instance_index != -1) {
_set_error("Can only specify 'instance_index' once.");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_PARENTHESIS_OPEN) {
_set_error("Expected '(' after 'instance_index'");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type == TK_OP_SUB) {
_set_error("The instance index can't be negative.");
return ERR_PARSE_ERROR;
}
if (tk.type != TK_INT_CONSTANT) {
_set_error("Expected integer constant");
return ERR_PARSE_ERROR;
}
custom_instance_index = tk.constant;
if (custom_instance_index >= MAX_INSTANCE_UNIFORM_INDICES) {
_set_error("Allowed instance uniform indices are 0-" + itos(MAX_INSTANCE_UNIFORM_INDICES - 1));
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_PARENTHESIS_CLOSE) {
_set_error("Expected ')'");
return ERR_PARSE_ERROR;
}
} else if (tk.type == TK_FILTER_LINEAR) {
uniform2.filter = FILTER_LINEAR;
} else if (tk.type == TK_FILTER_NEAREST) {
uniform2.filter = FILTER_NEAREST;
} else if (tk.type == TK_FILTER_NEAREST_MIPMAP) {
uniform2.filter = FILTER_NEAREST_MIPMAP;
} else if (tk.type == TK_FILTER_LINEAR_MIPMAP) {
uniform2.filter = FILTER_LINEAR_MIPMAP;
} else if (tk.type == TK_FILTER_NEAREST_MIPMAP_ANISO) {
uniform2.filter = FILTER_NEAREST_MIPMAP_ANISO;
} else if (tk.type == TK_FILTER_LINEAR_MIPMAP_ANISO) {
uniform2.filter = FILTER_LINEAR_MIPMAP_ANISO;
} else if (tk.type == TK_REPEAT_DISABLE) {
uniform2.repeat = REPEAT_DISABLE;
} else if (tk.type == TK_REPEAT_ENABLE) {
uniform2.repeat = REPEAT_ENABLE;
} else {
_set_error("Expected valid type hint after ':'.");
}
if (uniform2.hint != ShaderNode::Uniform::HINT_RANGE && uniform2.hint != ShaderNode::Uniform::HINT_NONE && uniform2.hint != ShaderNode::Uniform::HINT_COLOR && type <= TYPE_MAT4) {
_set_error("This hint is only for sampler types");
return ERR_PARSE_ERROR;
}
tk = _get_token();
} while (tk.type == TK_COMMA);
}
if (uniform_scope == ShaderNode::Uniform::SCOPE_INSTANCE) {
if (custom_instance_index >= 0) {
uniform2.instance_index = custom_instance_index;
} else {
uniform2.instance_index = instance_index++;
if (instance_index > MAX_INSTANCE_UNIFORM_INDICES) {
_set_error("Too many 'instance' uniforms in shader, maximum supported is " + itos(MAX_INSTANCE_UNIFORM_INDICES));
return ERR_PARSE_ERROR;
}
}
}
//reset scope for next uniform
if (tk.type == TK_OP_ASSIGN) {
Node *expr = _parse_and_reduce_expression(nullptr, FunctionInfo());
if (!expr) {
return ERR_PARSE_ERROR;
}
if (expr->type != Node::TYPE_CONSTANT) {
_set_error("Expected constant expression after '='");
return ERR_PARSE_ERROR;
}
ConstantNode *cn = static_cast<ConstantNode *>(expr);
uniform2.default_value.resize(cn->values.size());
if (!convert_constant(cn, uniform2.type, uniform2.default_value.ptrw())) {
_set_error("Can't convert constant to " + get_datatype_name(uniform2.type));
return ERR_PARSE_ERROR;
}
tk = _get_token();
}
shader->uniforms[name] = uniform2;
//reset scope for next uniform
uniform_scope = ShaderNode::Uniform::SCOPE_LOCAL;
if (tk.type != TK_SEMICOLON) {
_set_error("Expected ';'");
return ERR_PARSE_ERROR;
}
} else { // varying
ShaderNode::Varying varying;
varying.type = type;
varying.precision = precision;
varying.interpolation = interpolation;
varying.tkpos = name_pos;
tk = _get_token();
if (tk.type != TK_SEMICOLON && tk.type != TK_BRACKET_OPEN) {
_set_error("Expected ';' or '['");
return ERR_PARSE_ERROR;
}
if (tk.type == TK_BRACKET_OPEN) {
tk = _get_token();
if (tk.type == TK_INT_CONSTANT && tk.constant > 0) {
varying.array_size = (int)tk.constant;
tk = _get_token();
if (tk.type == TK_BRACKET_CLOSE) {
tk = _get_token();
if (tk.type != TK_SEMICOLON) {
_set_error("Expected ';'");
return ERR_PARSE_ERROR;
}
} else {
_set_error("Expected ']'");
return ERR_PARSE_ERROR;
}
} else {
_set_error("Expected single integer constant > 0");
return ERR_PARSE_ERROR;
}
}
shader->varyings[name] = varying;
}
} break;
default: {
//function or constant variable
bool is_constant = false;
bool is_struct = false;
StringName struct_name;
DataPrecision precision = PRECISION_DEFAULT;
DataType type;
StringName name;
if (tk.type == TK_CONST) {
is_constant = true;
tk = _get_token();
}
if (is_token_precision(tk.type)) {
precision = get_token_precision(tk.type);
tk = _get_token();
}
if (shader->structs.has(tk.text)) {
if (precision != PRECISION_DEFAULT) {
_set_error("Precision modifier cannot be used on structs.");
return ERR_PARSE_ERROR;
}
is_struct = true;
struct_name = tk.text;
} else {
if (!is_token_datatype(tk.type)) {
_set_error("Expected constant, function, uniform or varying");
return ERR_PARSE_ERROR;
}
if (!is_token_variable_datatype(tk.type)) {
_set_error("Invalid data type for constants or function return (samplers not allowed)");
return ERR_PARSE_ERROR;
}
}
if (is_struct) {
type = TYPE_STRUCT;
} else {
type = get_token_datatype(tk.type);
}
TkPos prev_pos = _get_tkpos();
tk = _get_token();
if (tk.type == TK_BRACKET_OPEN) {
_set_error("Cannot use arrays as return types");
return ERR_PARSE_ERROR;
}
_set_tkpos(prev_pos);
_get_completable_identifier(nullptr, COMPLETION_MAIN_FUNCTION, name);
if (name == StringName()) {
_set_error("Expected function name after datatype");
return ERR_PARSE_ERROR;
}
if (_find_identifier(nullptr, false, FunctionInfo(), name)) {
_set_error("Redefinition of '" + String(name) + "'");
return ERR_PARSE_ERROR;
}
if (has_builtin(p_functions, name)) {
_set_error("Redefinition of '" + String(name) + "'");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_PARENTHESIS_OPEN) {
if (type == TYPE_VOID) {
_set_error("Expected '(' after function identifier");
return ERR_PARSE_ERROR;
}
//variable
while (true) {
ShaderNode::Constant constant;
constant.name = name;
constant.type = is_struct ? TYPE_STRUCT : type;
constant.type_str = struct_name;
constant.precision = precision;
constant.initializer = nullptr;
constant.array_size = 0;
bool unknown_size = false;
if (tk.type == TK_BRACKET_OPEN) {
if (RenderingServer::get_singleton()->is_low_end()) {
_set_error("Global const arrays are supported only on high-end platform!");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type == TK_BRACKET_CLOSE) {
unknown_size = true;
tk = _get_token();
} else if (tk.type == TK_INT_CONSTANT && ((int)tk.constant) > 0) {
constant.array_size = (int)tk.constant;
tk = _get_token();
if (tk.type != TK_BRACKET_CLOSE) {
_set_error("Expected ']'");
return ERR_PARSE_ERROR;
}
tk = _get_token();
} else {
_set_error("Expected integer constant > 0 or ']'");
return ERR_PARSE_ERROR;
}
}
if (tk.type == TK_OP_ASSIGN) {
if (!is_constant) {
_set_error("Expected 'const' keyword before constant definition");
return ERR_PARSE_ERROR;
}
if (constant.array_size > 0 || unknown_size) {
bool full_def = false;
ArrayDeclarationNode::Declaration decl;
decl.name = name;
decl.size = constant.array_size;
tk = _get_token();
if (tk.type != TK_CURLY_BRACKET_OPEN) {
if (unknown_size) {
_set_error("Expected '{'");
return ERR_PARSE_ERROR;
}
full_def = true;
DataPrecision precision2 = PRECISION_DEFAULT;
if (is_token_precision(tk.type)) {
precision2 = get_token_precision(tk.type);
tk = _get_token();
if (!is_token_nonvoid_datatype(tk.type)) {
_set_error("Expected datatype after precision");
return ERR_PARSE_ERROR;
}
}
StringName struct_name2;
DataType type2;
if (shader->structs.has(tk.text)) {
type2 = TYPE_STRUCT;
struct_name2 = tk.text;
} else {
if (!is_token_variable_datatype(tk.type)) {
_set_error("Invalid data type for array");
return ERR_PARSE_ERROR;
}
type2 = get_token_datatype(tk.type);
}
int array_size2 = 0;
tk = _get_token();
if (tk.type == TK_BRACKET_OPEN) {
TkPos pos2 = _get_tkpos();
tk = _get_token();
if (tk.type == TK_BRACKET_CLOSE) {
array_size2 = constant.array_size;
tk = _get_token();
} else {
_set_tkpos(pos2);
Node *n = _parse_and_reduce_expression(nullptr, FunctionInfo());
if (!n || n->type != Node::TYPE_CONSTANT || n->get_datatype() != TYPE_INT) {
_set_error("Expected single integer constant > 0");
return ERR_PARSE_ERROR;
}
ConstantNode *cnode = (ConstantNode *)n;
if (cnode->values.size() == 1) {
array_size2 = cnode->values[0].sint;
if (array_size2 <= 0) {
_set_error("Expected single integer constant > 0");
return ERR_PARSE_ERROR;
}
} else {
_set_error("Expected single integer constant > 0");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_BRACKET_CLOSE) {
_set_error("Expected ']");
return ERR_PARSE_ERROR;
} else {
tk = _get_token();
}
}
} else {
_set_error("Expected '[");
return ERR_PARSE_ERROR;
}
if (constant.precision != precision2 || constant.type != type2 || struct_name != struct_name2 || constant.array_size != array_size2) {
String error_str = "Cannot convert from '";
if (type2 == TYPE_STRUCT) {
error_str += struct_name2;
} else {
if (precision2 != PRECISION_DEFAULT) {
error_str += get_precision_name(precision2);
error_str += " ";
}
error_str += get_datatype_name(type2);
}
error_str += "[";
error_str += itos(array_size2);
error_str += "]'";
error_str += " to '";
if (type == TYPE_STRUCT) {
error_str += struct_name;
} else {
if (precision != PRECISION_DEFAULT) {
error_str += get_precision_name(precision);
error_str += " ";
}
error_str += get_datatype_name(type);
}
error_str += "[";
error_str += itos(constant.array_size);
error_str += "]'";
_set_error(error_str);
return ERR_PARSE_ERROR;
}
}
bool curly = tk.type == TK_CURLY_BRACKET_OPEN;
if (unknown_size) {
if (!curly) {
_set_error("Expected '{'");
return ERR_PARSE_ERROR;
}
} else {
if (full_def) {
if (curly) {
_set_error("Expected '('");
return ERR_PARSE_ERROR;
}
}
}
if (tk.type == TK_PARENTHESIS_OPEN || curly) { // initialization
while (true) {
Node *n = _parse_and_reduce_expression(nullptr, FunctionInfo());
if (!n) {
return ERR_PARSE_ERROR;
}
if (n->type == Node::TYPE_OPERATOR && ((OperatorNode *)n)->op == OP_CALL) {
_set_error("Expected constant expression");
return ERR_PARSE_ERROR;
}
if (constant.type != n->get_datatype() || n->get_datatype_name() != struct_name) {
_set_error("Invalid assignment of '" + (n->get_datatype() == TYPE_STRUCT ? n->get_datatype_name() : get_datatype_name(n->get_datatype())) + "' to '" + (is_struct ? String(struct_name) : get_datatype_name(constant.type)) + "'");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type == TK_COMMA) {
decl.initializer.push_back(n);
continue;
} else if (!curly && tk.type == TK_PARENTHESIS_CLOSE) {
decl.initializer.push_back(n);
break;
} else if (curly && tk.type == TK_CURLY_BRACKET_CLOSE) {
decl.initializer.push_back(n);
break;
} else {
if (curly)
_set_error("Expected '}' or ','");
else
_set_error("Expected ')' or ','");
return ERR_PARSE_ERROR;
}
}
if (unknown_size) {
decl.size = decl.initializer.size();
constant.array_size = decl.initializer.size();
} else if (decl.initializer.size() != constant.array_size) {
_set_error("Array size mismatch");
return ERR_PARSE_ERROR;
}
}
ConstantNode *expr = memnew(ConstantNode);
expr->datatype = constant.type;
expr->struct_name = constant.type_str;
expr->array_size = constant.array_size;
expr->array_declarations.push_back(decl);
constant.initializer = static_cast<ConstantNode *>(expr);
} else {
//variable created with assignment! must parse an expression
Node *expr = _parse_and_reduce_expression(nullptr, FunctionInfo());
if (!expr)
return ERR_PARSE_ERROR;
if (expr->type == Node::TYPE_OPERATOR && ((OperatorNode *)expr)->op == OP_CALL) {
_set_error("Expected constant expression after '='");
return ERR_PARSE_ERROR;
}
constant.initializer = static_cast<ConstantNode *>(expr);
if (type != expr->get_datatype() || expr->get_datatype_name() != struct_name) {
_set_error("Invalid assignment of '" + (expr->get_datatype() == TYPE_STRUCT ? expr->get_datatype_name() : get_datatype_name(expr->get_datatype())) + "' to '" + (is_struct ? String(struct_name) : get_datatype_name(type)) + "'");
return ERR_PARSE_ERROR;
}
}
tk = _get_token();
} else {
if (constant.array_size > 0 || unknown_size) {
_set_error("Expected array initialization");
return ERR_PARSE_ERROR;
} else {
_set_error("Expected initialization of constant");
return ERR_PARSE_ERROR;
}
}
shader->constants[name] = constant;
shader->vconstants.push_back(constant);
if (tk.type == TK_COMMA) {
tk = _get_token();
if (tk.type != TK_IDENTIFIER) {
_set_error("Expected identifier after type");
return ERR_PARSE_ERROR;
}
name = tk.text;
if (_find_identifier(nullptr, false, FunctionInfo(), name)) {
_set_error("Redefinition of '" + String(name) + "'");
return ERR_PARSE_ERROR;
}
if (has_builtin(p_functions, name)) {
_set_error("Redefinition of '" + String(name) + "'");
return ERR_PARSE_ERROR;
}
tk = _get_token();
} else if (tk.type == TK_SEMICOLON) {
break;
} else {
_set_error("Expected ',' or ';' after constant");
return ERR_PARSE_ERROR;
}
}
break;
}
FunctionInfo builtins;
if (p_functions.has(name)) {
builtins = p_functions[name];
}
if (p_functions.has("global")) { // Adds global variables: 'TIME'
for (Map<StringName, BuiltInInfo>::Element *E = p_functions["global"].built_ins.front(); E; E = E->next()) {
builtins.built_ins.insert(E->key(), E->value());
}
}
ShaderNode::Function function;
function.callable = !p_functions.has(name);
function.name = name;
FunctionNode *func_node = alloc_node<FunctionNode>();
function.function = func_node;
shader->functions.push_back(function);
func_node->name = name;
func_node->return_type = type;
func_node->return_struct_name = struct_name;
func_node->return_precision = precision;
if (p_functions.has(name)) {
func_node->can_discard = p_functions[name].can_discard;
}
func_node->body = alloc_node<BlockNode>();
func_node->body->parent_function = func_node;
tk = _get_token();
while (true) {
if (tk.type == TK_PARENTHESIS_CLOSE) {
break;
}
bool is_const = false;
if (tk.type == TK_CONST) {
is_const = true;
tk = _get_token();
}
ArgumentQualifier qualifier = ARGUMENT_QUALIFIER_IN;
if (tk.type == TK_ARG_IN) {
qualifier = ARGUMENT_QUALIFIER_IN;
tk = _get_token();
} else if (tk.type == TK_ARG_OUT) {
if (is_const) {
_set_error("'out' qualifier cannot be used within a function parameter declared with 'const'.");
return ERR_PARSE_ERROR;
}
qualifier = ARGUMENT_QUALIFIER_OUT;
tk = _get_token();
} else if (tk.type == TK_ARG_INOUT) {
if (is_const) {
_set_error("'inout' qualifier cannot be used within a function parameter declared with 'const'.");
return ERR_PARSE_ERROR;
}
qualifier = ARGUMENT_QUALIFIER_INOUT;
tk = _get_token();
}
DataType ptype;
StringName pname;
StringName param_struct_name;
DataPrecision pprecision = PRECISION_DEFAULT;
bool use_precision = false;
if (is_token_precision(tk.type)) {
pprecision = get_token_precision(tk.type);
tk = _get_token();
use_precision = true;
}
is_struct = false;
if (shader->structs.has(tk.text)) {
is_struct = true;
param_struct_name = tk.text;
if (use_precision) {
_set_error("Precision modifier cannot be used on structs.");
return ERR_PARSE_ERROR;
}
}
if (!is_struct && !is_token_datatype(tk.type)) {
_set_error("Expected a valid datatype for argument");
return ERR_PARSE_ERROR;
}
if (qualifier == ARGUMENT_QUALIFIER_OUT || qualifier == ARGUMENT_QUALIFIER_INOUT) {
if (is_sampler_type(get_token_datatype(tk.type))) {
_set_error("Opaque types cannot be output parameters.");
return ERR_PARSE_ERROR;
}
}
if (is_struct) {
ptype = TYPE_STRUCT;
} else {
ptype = get_token_datatype(tk.type);
if (_validate_datatype(ptype) != OK) {
return ERR_PARSE_ERROR;
}
if (ptype == TYPE_VOID) {
_set_error("void not allowed in argument");
return ERR_PARSE_ERROR;
}
}
tk = _get_token();
if (tk.type == TK_BRACKET_OPEN) {
_set_error("Arrays as parameters are not implemented yet");
return ERR_PARSE_ERROR;
}
if (tk.type != TK_IDENTIFIER) {
_set_error("Expected identifier for argument name");
return ERR_PARSE_ERROR;
}
pname = tk.text;
ShaderLanguage::IdentifierType itype;
if (_find_identifier(func_node->body, false, builtins, pname, (ShaderLanguage::DataType *)nullptr, &itype)) {
if (itype != IDENTIFIER_FUNCTION) {
_set_error("Redefinition of '" + String(pname) + "'");
return ERR_PARSE_ERROR;
}
}
if (has_builtin(p_functions, pname)) {
_set_error("Redefinition of '" + String(pname) + "'");
return ERR_PARSE_ERROR;
}
FunctionNode::Argument arg;
arg.type = ptype;
arg.name = pname;
arg.type_str = param_struct_name;
arg.precision = pprecision;
arg.qualifier = qualifier;
arg.tex_argument_check = false;
arg.tex_builtin_check = false;
arg.tex_argument_filter = FILTER_DEFAULT;
arg.tex_argument_repeat = REPEAT_DEFAULT;
arg.is_const = is_const;
func_node->arguments.push_back(arg);
tk = _get_token();
if (tk.type == TK_BRACKET_OPEN) {
_set_error("Arrays as parameters are not implemented yet");
return ERR_PARSE_ERROR;
}
if (tk.type == TK_COMMA) {
tk = _get_token();
//do none and go on
} else if (tk.type != TK_PARENTHESIS_CLOSE) {
_set_error("Expected ',' or ')' after identifier");
return ERR_PARSE_ERROR;
}
}
if (p_functions.has(name)) {
//if one of the core functions, make sure they are of the correct form
if (func_node->arguments.size() > 0) {
_set_error("Function '" + String(name) + "' expects no arguments.");
return ERR_PARSE_ERROR;
}
if (func_node->return_type != TYPE_VOID) {
_set_error("Function '" + String(name) + "' must be of void return type.");
return ERR_PARSE_ERROR;
}
}
//all good let's parse inside the function!
tk = _get_token();
if (tk.type != TK_CURLY_BRACKET_OPEN) {
_set_error("Expected '{' to begin function");
return ERR_PARSE_ERROR;
}
current_function = name;
Error err = _parse_block(func_node->body, builtins);
if (err) {
return err;
}
if (func_node->return_type != DataType::TYPE_VOID) {
BlockNode *block = func_node->body;
if (_find_last_flow_op_in_block(block, FlowOperation::FLOW_OP_RETURN) != OK) {
_set_error("Expected at least one return statement in a non-void function.");
return ERR_PARSE_ERROR;
}
}
current_function = StringName();
}
}
tk = _get_token();
}
for (Map<StringName, ShaderNode::Varying>::Element *E = shader->varyings.front(); E; E = E->next()) {
if (E->get().stage == ShaderNode::Varying::STAGE_VERTEX || E->get().stage == ShaderNode::Varying::STAGE_FRAGMENT) {
_set_tkpos(E->get().tkpos);
_set_error(RTR("Varying must only be used in two different stages, which can be 'vertex' 'fragment' and 'light'"));
return ERR_PARSE_ERROR;
}
}
return OK;
}
bool ShaderLanguage::has_builtin(const Map<StringName, ShaderLanguage::FunctionInfo> &p_functions, const StringName &p_name) {
if (p_functions.has("vertex")) {
if (p_functions["vertex"].built_ins.has(p_name)) {
return true;
}
}
if (p_functions.has("fragment")) {
if (p_functions["fragment"].built_ins.has(p_name)) {
return true;
}
}
if (p_functions.has("light")) {
if (p_functions["light"].built_ins.has(p_name)) {
return true;
}
}
if (p_functions.has("compute")) {
if (p_functions["compute"].built_ins.has(p_name)) {
return true;
}
}
return false;
}
Error ShaderLanguage::_find_last_flow_op_in_op(ControlFlowNode *p_flow, FlowOperation p_op) {
bool found = false;
for (int i = p_flow->blocks.size() - 1; i >= 0; i--) {
if (p_flow->blocks[i]->type == Node::TYPE_BLOCK) {
BlockNode *last_block = (BlockNode *)p_flow->blocks[i];
if (_find_last_flow_op_in_block(last_block, p_op) == OK) {
found = true;
break;
}
}
}
if (found) {
return OK;
}
return FAILED;
}
Error ShaderLanguage::_find_last_flow_op_in_block(BlockNode *p_block, FlowOperation p_op) {
bool found = false;
for (int i = p_block->statements.size() - 1; i >= 0; i--) {
if (p_block->statements[i]->type == Node::TYPE_CONTROL_FLOW) {
ControlFlowNode *flow = (ControlFlowNode *)p_block->statements[i];
if (flow->flow_op == p_op) {
found = true;
break;
} else {
if (_find_last_flow_op_in_op(flow, p_op) == OK) {
found = true;
break;
}
}
} else if (p_block->statements[i]->type == Node::TYPE_BLOCK) {
BlockNode *block = (BlockNode *)p_block->statements[i];
if (_find_last_flow_op_in_block(block, p_op) == OK) {
found = true;
break;
}
}
}
if (found) {
return OK;
}
return FAILED;
}
// skips over whitespace and /* */ and // comments
static int _get_first_ident_pos(const String &p_code) {
int idx = 0;
#define GETCHAR(m_idx) (((idx + m_idx) < p_code.length()) ? p_code[idx + m_idx] : char32_t(0))
while (true) {
if (GETCHAR(0) == '/' && GETCHAR(1) == '/') {
idx += 2;
while (true) {
if (GETCHAR(0) == 0) {
return 0;
}
if (GETCHAR(0) == '\n') {
idx++;
break; // loop
}
idx++;
}
} else if (GETCHAR(0) == '/' && GETCHAR(1) == '*') {
idx += 2;
while (true) {
if (GETCHAR(0) == 0) {
return 0;
}
if (GETCHAR(0) == '*' && GETCHAR(1) == '/') {
idx += 2;
break; // loop
}
idx++;
}
} else {
switch (GETCHAR(0)) {
case ' ':
case '\t':
case '\r':
case '\n': {
idx++;
} break; // switch
default:
return idx;
}
}
}
#undef GETCHAR
}
String ShaderLanguage::get_shader_type(const String &p_code) {
bool reading_type = false;
String cur_identifier;
for (int i = _get_first_ident_pos(p_code); i < p_code.length(); i++) {
if (p_code[i] == ';') {
break;
} else if (p_code[i] <= 32) {
if (cur_identifier != String()) {
if (!reading_type) {
if (cur_identifier != "shader_type") {
return String();
}
reading_type = true;
cur_identifier = String();
} else {
return cur_identifier;
}
}
} else {
cur_identifier += String::chr(p_code[i]);
}
}
if (reading_type) {
return cur_identifier;
}
return String();
}
Error ShaderLanguage::compile(const String &p_code, const Map<StringName, FunctionInfo> &p_functions, const Vector<StringName> &p_render_modes, const Set<String> &p_shader_types, GlobalVariableGetTypeFunc p_global_variable_type_func) {
clear();
code = p_code;
global_var_get_type_func = p_global_variable_type_func;
nodes = nullptr;
shader = alloc_node<ShaderNode>();
Error err = _parse_shader(p_functions, p_render_modes, p_shader_types);
if (err != OK) {
return err;
}
return OK;
}
Error ShaderLanguage::complete(const String &p_code, const Map<StringName, FunctionInfo> &p_functions, const Vector<StringName> &p_render_modes, const Set<String> &p_shader_types, GlobalVariableGetTypeFunc p_global_variable_type_func, List<ScriptCodeCompletionOption> *r_options, String &r_call_hint) {
clear();
code = p_code;
nodes = nullptr;
global_var_get_type_func = p_global_variable_type_func;
shader = alloc_node<ShaderNode>();
_parse_shader(p_functions, p_render_modes, p_shader_types);
switch (completion_type) {
case COMPLETION_NONE: {
//do nothing
return OK;
} break;
case COMPLETION_RENDER_MODE: {
for (int i = 0; i < p_render_modes.size(); i++) {
ScriptCodeCompletionOption option(p_render_modes[i], ScriptCodeCompletionOption::KIND_ENUM);
r_options->push_back(option);
}
return OK;
} break;
case COMPLETION_STRUCT: {
if (shader->structs.has(completion_struct)) {
StructNode *node = shader->structs[completion_struct].shader_struct;
for (int i = 0; i < node->members.size(); i++) {
ScriptCodeCompletionOption option(node->members[i]->name, ScriptCodeCompletionOption::KIND_MEMBER);
r_options->push_back(option);
}
}
return OK;
} break;
case COMPLETION_MAIN_FUNCTION: {
for (const Map<StringName, FunctionInfo>::Element *E = p_functions.front(); E; E = E->next()) {
ScriptCodeCompletionOption option(E->key(), ScriptCodeCompletionOption::KIND_FUNCTION);
r_options->push_back(option);
}
return OK;
} break;
case COMPLETION_IDENTIFIER:
case COMPLETION_FUNCTION_CALL: {
bool comp_ident = completion_type == COMPLETION_IDENTIFIER;
Map<String, ScriptCodeCompletionOption::Kind> matches;
StringName skip_function;
BlockNode *block = completion_block;
if (completion_class == TAG_GLOBAL) {
while (block) {
if (comp_ident) {
for (const Map<StringName, BlockNode::Variable>::Element *E = block->variables.front(); E; E = E->next()) {
if (E->get().line < completion_line) {
matches.insert(E->key(), ScriptCodeCompletionOption::KIND_VARIABLE);
}
}
}
if (block->parent_function) {
if (comp_ident) {
for (int i = 0; i < block->parent_function->arguments.size(); i++) {
matches.insert(block->parent_function->arguments[i].name, ScriptCodeCompletionOption::KIND_VARIABLE);
}
}
skip_function = block->parent_function->name;
}
block = block->parent_block;
}
if (comp_ident) {
if (p_functions.has("global")) {
for (Map<StringName, BuiltInInfo>::Element *E = p_functions["global"].built_ins.front(); E; E = E->next()) {
ScriptCodeCompletionOption::Kind kind = ScriptCodeCompletionOption::KIND_MEMBER;
if (E->get().constant) {
kind = ScriptCodeCompletionOption::KIND_CONSTANT;
}
matches.insert(E->key(), kind);
}
}
if (skip_function != StringName() && p_functions.has(skip_function)) {
for (Map<StringName, BuiltInInfo>::Element *E = p_functions[skip_function].built_ins.front(); E; E = E->next()) {
ScriptCodeCompletionOption::Kind kind = ScriptCodeCompletionOption::KIND_MEMBER;
if (E->get().constant) {
kind = ScriptCodeCompletionOption::KIND_CONSTANT;
}
matches.insert(E->key(), kind);
}
}
for (const Map<StringName, ShaderNode::Varying>::Element *E = shader->varyings.front(); E; E = E->next()) {
matches.insert(E->key(), ScriptCodeCompletionOption::KIND_VARIABLE);
}
for (const Map<StringName, ShaderNode::Uniform>::Element *E = shader->uniforms.front(); E; E = E->next()) {
matches.insert(E->key(), ScriptCodeCompletionOption::KIND_MEMBER);
}
}
for (int i = 0; i < shader->functions.size(); i++) {
if (!shader->functions[i].callable || shader->functions[i].name == skip_function) {
continue;
}
matches.insert(String(shader->functions[i].name), ScriptCodeCompletionOption::KIND_FUNCTION);
}
int idx = 0;
bool low_end = RenderingServer::get_singleton()->is_low_end();
if (stages && stages->has(skip_function)) {
for (const Map<StringName, StageFunctionInfo>::Element *E = (*stages)[skip_function].stage_functions.front(); E; E = E->next()) {
matches.insert(String(E->key()), ScriptCodeCompletionOption::KIND_FUNCTION);
}
}
while (builtin_func_defs[idx].name) {
if (low_end && builtin_func_defs[idx].high_end) {
idx++;
continue;
}
matches.insert(String(builtin_func_defs[idx].name), ScriptCodeCompletionOption::KIND_FUNCTION);
idx++;
}
} else { // sub-class
int idx = 0;
bool low_end = RenderingServer::get_singleton()->is_low_end();
while (builtin_func_defs[idx].name) {
if (low_end && builtin_func_defs[idx].high_end) {
idx++;
continue;
}
if (builtin_func_defs[idx].tag == completion_class) {
matches.insert(String(builtin_func_defs[idx].name), ScriptCodeCompletionOption::KIND_FUNCTION);
}
idx++;
}
}
for (Map<String, ScriptCodeCompletionOption::Kind>::Element *E = matches.front(); E; E = E->next()) {
ScriptCodeCompletionOption option(E->key(), E->value());
if (E->value() == ScriptCodeCompletionOption::KIND_FUNCTION) {
option.insert_text += "(";
}
r_options->push_back(option);
}
return OK;
} break;
case COMPLETION_CALL_ARGUMENTS: {
StringName block_function;
BlockNode *block = completion_block;
while (block) {
if (block->parent_function) {
block_function = block->parent_function->name;
}
block = block->parent_block;
}
for (int i = 0; i < shader->functions.size(); i++) {
if (!shader->functions[i].callable) {
continue;
}
if (shader->functions[i].name == completion_function) {
String calltip;
calltip += get_datatype_name(shader->functions[i].function->return_type);
calltip += " ";
calltip += shader->functions[i].name;
calltip += "(";
for (int j = 0; j < shader->functions[i].function->arguments.size(); j++) {
if (j > 0) {
calltip += ", ";
} else {
calltip += " ";
}
if (j == completion_argument) {
calltip += char32_t(0xFFFF);
}
if (shader->functions[i].function->arguments[j].is_const) {
calltip += "const ";
}
if (shader->functions[i].function->arguments[j].qualifier != ArgumentQualifier::ARGUMENT_QUALIFIER_IN) {
if (shader->functions[i].function->arguments[j].qualifier == ArgumentQualifier::ARGUMENT_QUALIFIER_OUT) {
calltip += "out ";
} else { // ArgumentQualifier::ARGUMENT_QUALIFIER_INOUT
calltip += "inout ";
}
}
calltip += get_datatype_name(shader->functions[i].function->arguments[j].type);
calltip += " ";
calltip += shader->functions[i].function->arguments[j].name;
if (j == completion_argument) {
calltip += char32_t(0xFFFF);
}
}
if (shader->functions[i].function->arguments.size()) {
calltip += " ";
}
calltip += ")";
r_call_hint = calltip;
return OK;
}
}
int idx = 0;
String calltip;
bool low_end = RenderingServer::get_singleton()->is_low_end();
if (stages && stages->has(block_function)) {
for (const Map<StringName, StageFunctionInfo>::Element *E = (*stages)[block_function].stage_functions.front(); E; E = E->next()) {
if (completion_function == E->key()) {
calltip += get_datatype_name(E->get().return_type);
calltip += " ";
calltip += E->key();
calltip += "(";
for (int i = 0; i < E->get().arguments.size(); i++) {
if (i > 0) {
calltip += ", ";
} else {
calltip += " ";
}
if (i == completion_argument) {
calltip += char32_t(0xFFFF);
}
calltip += get_datatype_name(E->get().arguments[i].type);
calltip += " ";
calltip += E->get().arguments[i].name;
if (i == completion_argument) {
calltip += char32_t(0xFFFF);
}
}
if (E->get().arguments.size()) {
calltip += " ";
}
calltip += ")";
r_call_hint = calltip;
return OK;
}
}
}
while (builtin_func_defs[idx].name) {
if (low_end && builtin_func_defs[idx].high_end) {
idx++;
continue;
}
int idx2 = 0;
int out_arg = -1;
while (builtin_func_out_args[idx2].name != nullptr) {
if (builtin_func_out_args[idx2].name == builtin_func_defs[idx].name) {
out_arg = builtin_func_out_args[idx2].argument;
break;
}
idx2++;
}
if (completion_function == builtin_func_defs[idx].name) {
if (builtin_func_defs[idx].tag != completion_class) {
idx++;
continue;
}
if (calltip.length()) {
calltip += "\n";
}
calltip += get_datatype_name(builtin_func_defs[idx].rettype);
calltip += " ";
calltip += builtin_func_defs[idx].name;
calltip += "(";
bool found_arg = false;
for (int i = 0; i < BuiltinFuncDef::MAX_ARGS - 1; i++) {
if (builtin_func_defs[idx].args[i] == TYPE_VOID) {
break;
}
if (i > 0) {
calltip += ", ";
} else {
calltip += " ";
}
if (i == completion_argument) {
calltip += char32_t(0xFFFF);
}
if (out_arg >= 0 && i == out_arg) {
calltip += "out ";
}
calltip += get_datatype_name(builtin_func_defs[idx].args[i]);
if (i == completion_argument) {
calltip += char32_t(0xFFFF);
}
found_arg = true;
}
if (found_arg) {
calltip += " ";
}
calltip += ")";
}
idx++;
}
r_call_hint = calltip;
return OK;
} break;
case COMPLETION_INDEX: {
const char colv[4] = { 'r', 'g', 'b', 'a' };
const char coordv[4] = { 'x', 'y', 'z', 'w' };
const char coordt[4] = { 's', 't', 'p', 'q' };
int limit = 0;
switch (completion_base) {
case TYPE_BVEC2:
case TYPE_IVEC2:
case TYPE_UVEC2:
case TYPE_VEC2: {
limit = 2;
} break;
case TYPE_BVEC3:
case TYPE_IVEC3:
case TYPE_UVEC3:
case TYPE_VEC3: {
limit = 3;
} break;
case TYPE_BVEC4:
case TYPE_IVEC4:
case TYPE_UVEC4:
case TYPE_VEC4: {
limit = 4;
} break;
case TYPE_MAT2:
limit = 2;
break;
case TYPE_MAT3:
limit = 3;
break;
case TYPE_MAT4:
limit = 4;
break;
default: {
}
}
for (int i = 0; i < limit; i++) {
r_options->push_back(ScriptCodeCompletionOption(String::chr(colv[i]), ScriptCodeCompletionOption::KIND_PLAIN_TEXT));
r_options->push_back(ScriptCodeCompletionOption(String::chr(coordv[i]), ScriptCodeCompletionOption::KIND_PLAIN_TEXT));
r_options->push_back(ScriptCodeCompletionOption(String::chr(coordt[i]), ScriptCodeCompletionOption::KIND_PLAIN_TEXT));
}
} break;
}
return ERR_PARSE_ERROR;
}
String ShaderLanguage::get_error_text() {
return error_str;
}
int ShaderLanguage::get_error_line() {
return error_line;
}
ShaderLanguage::ShaderNode *ShaderLanguage::get_shader() {
return shader;
}
ShaderLanguage::ShaderLanguage() {
nodes = nullptr;
completion_class = TAG_GLOBAL;
}
ShaderLanguage::~ShaderLanguage() {
clear();
}