d8223ffa75
That year should bring the long-awaited OpenGL ES 3.0 compatible renderer
with state-of-the-art rendering techniques tuned to work as low as middle
end handheld devices - without compromising with the possibilities given
for higher end desktop games of course. Great times ahead for the Godot
community and the gamers that will play our games!
(cherry picked from commit c7bc44d5ad)
369 lines
9.2 KiB
C++
369 lines
9.2 KiB
C++
/*************************************************************************/
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/* shader_gles2.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef SHADER_GLES2_H
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#define SHADER_GLES2_H
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#ifdef GLES2_ENABLED
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#include "platform_config.h"
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#ifndef GLES2_INCLUDE_H
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#include <GLES2/gl2.h>
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#else
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#include GLES2_INCLUDE_H
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#endif
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#include "hash_map.h"
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#include "map.h"
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#include "variant.h"
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#include "camera_matrix.h"
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/**
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@author Juan Linietsky <reduzio@gmail.com>
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*/
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class ShaderGLES2 {
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protected:
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struct Enum {
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uint64_t mask;
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uint64_t shift;
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const char *defines[16];
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};
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struct EnumValue {
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uint64_t set_mask;
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uint64_t clear_mask;
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};
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struct AttributePair {
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const char *name;
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int index;
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};
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struct UniformPair {
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const char* name;
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Variant::Type type_hint;
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};
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struct TexUnitPair {
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const char *name;
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int index;
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};
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bool uniforms_dirty;
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private:
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//@TODO Optimize to a fixed set of shader pools and use a LRU
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int uniform_count;
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int texunit_pair_count;
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int conditional_count;
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int vertex_code_start;
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int fragment_code_start;
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int attribute_pair_count;
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struct CustomCode {
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String vertex;
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String vertex_globals;
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String fragment;
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String fragment_globals;
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String light;
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uint32_t version;
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Vector<StringName> custom_uniforms;
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Vector<const char*> custom_defines;
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};
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struct Version {
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GLuint id;
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GLuint vert_id;
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GLuint frag_id;
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GLint *uniform_location;
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Vector<GLint> custom_uniform_locations;
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uint32_t code_version;
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bool ok;
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Version() { code_version=0; ok=false; uniform_location=NULL; }
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};
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Version *version;
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union VersionKey {
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struct {
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uint32_t version;
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uint32_t code_version;
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};
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uint64_t key;
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bool operator==(const VersionKey& p_key) const { return key==p_key.key; }
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bool operator<(const VersionKey& p_key) const { return key<p_key.key; }
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};
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struct VersionKeyHash {
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static _FORCE_INLINE_ uint32_t hash( const VersionKey& p_key) { return HashMapHahserDefault::hash(p_key.key); };
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};
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//this should use a way more cachefriendly version..
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HashMap<VersionKey,Version,VersionKeyHash> version_map;
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HashMap<uint32_t,CustomCode> custom_code_map;
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uint32_t last_custom_code;
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VersionKey conditional_version;
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VersionKey new_conditional_version;
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virtual String get_shader_name() const=0;
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const char** conditional_defines;
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const char** uniform_names;
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const AttributePair *attribute_pairs;
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const TexUnitPair *texunit_pairs;
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const char* vertex_code;
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const char* fragment_code;
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CharString fragment_code0;
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CharString fragment_code1;
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CharString fragment_code2;
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CharString fragment_code3;
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CharString vertex_code0;
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CharString vertex_code1;
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CharString vertex_code2;
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Version * get_current_version();
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static ShaderGLES2 *active;
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_FORCE_INLINE_ void _set_uniform_variant(GLint p_uniform,const Variant& p_value) {
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if (p_uniform<0)
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return; // do none
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switch(p_value.get_type()) {
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case Variant::BOOL:
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case Variant::INT:/* {
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int val=p_value;
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glUniform1i( p_uniform, val );
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} break; */
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case Variant::REAL: {
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real_t val=p_value;
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glUniform1f( p_uniform, val );
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} break;
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case Variant::COLOR: {
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Color val=p_value;
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glUniform4f( p_uniform, val.r, val.g,val.b,val.a );
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} break;
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case Variant::VECTOR2: {
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Vector2 val=p_value;
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glUniform2f( p_uniform, val.x,val.y );
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} break;
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case Variant::VECTOR3: {
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Vector3 val=p_value;
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glUniform3f( p_uniform, val.x,val.y,val.z );
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} break;
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case Variant::PLANE: {
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Plane val=p_value;
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glUniform4f( p_uniform, val.normal.x,val.normal.y,val.normal.z,val.d );
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} break;
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case Variant::QUAT: {
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Quat val=p_value;
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glUniform4f( p_uniform, val.x,val.y,val.z,val.w );
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} break;
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case Variant::MATRIX32: {
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Matrix32 tr=p_value;
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GLfloat matrix[16]={ /* build a 16x16 matrix */
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tr.elements[0][0],
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tr.elements[0][1],
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0,
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0,
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tr.elements[1][0],
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tr.elements[1][1],
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0,
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0,
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0,
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0,
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1,
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0,
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tr.elements[2][0],
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tr.elements[2][1],
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0,
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1
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};
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glUniformMatrix4fv(p_uniform,1,false,matrix);
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} break;
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case Variant::MATRIX3:
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case Variant::TRANSFORM: {
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Transform tr=p_value;
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GLfloat matrix[16]={ /* build a 16x16 matrix */
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tr.basis.elements[0][0],
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tr.basis.elements[1][0],
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tr.basis.elements[2][0],
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0,
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tr.basis.elements[0][1],
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tr.basis.elements[1][1],
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tr.basis.elements[2][1],
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0,
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tr.basis.elements[0][2],
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tr.basis.elements[1][2],
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tr.basis.elements[2][2],
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0,
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tr.origin.x,
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tr.origin.y,
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tr.origin.z,
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1
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};
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glUniformMatrix4fv(p_uniform,1,false,matrix);
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} break;
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default: { ERR_FAIL(); } // do nothing
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}
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}
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Map<uint32_t,Variant> uniform_defaults;
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Map<uint32_t,CameraMatrix> uniform_cameras;
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protected:
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_FORCE_INLINE_ int _get_uniform(int p_which) const;
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_FORCE_INLINE_ void _set_conditional(int p_which, bool p_value);
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void setup(const char** p_conditional_defines, int p_conditional_count,const char** p_uniform_names,int p_uniform_count, const AttributePair* p_attribute_pairs, int p_attribute_count, const TexUnitPair *p_texunit_pairs, int p_texunit_pair_count,const char*p_vertex_code, const char *p_fragment_code,int p_vertex_code_start,int p_fragment_code_start);
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ShaderGLES2();
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public:
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enum {
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CUSTOM_SHADER_DISABLED=0
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};
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GLint get_uniform_location(const String& p_name) const;
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GLint get_uniform_location(int p_uniform) const;
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static _FORCE_INLINE_ ShaderGLES2 *get_active() { return active; };
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bool bind();
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void unbind();
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void bind_uniforms();
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inline GLuint get_program() const { return version?version->id:0; }
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void clear_caches();
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uint32_t create_custom_shader();
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void set_custom_shader_code(uint32_t p_id,const String& p_vertex, const String& p_vertex_globals,const String& p_fragment,const String& p_p_light,const String& p_fragment_globals,const Vector<StringName>& p_uniforms,const Vector<const char*> &p_custom_defines);
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void set_custom_shader(uint32_t p_id);
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void free_custom_shader(uint32_t p_id);
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void set_uniform_default(int p_idx, const Variant& p_value) {
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if (p_value.get_type()==Variant::NIL) {
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uniform_defaults.erase(p_idx);
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} else {
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uniform_defaults[p_idx]=p_value;
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}
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uniforms_dirty = true;
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};
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uint32_t get_version() const { return new_conditional_version.version; }
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void set_uniform_camera(int p_idx, const CameraMatrix& p_mat) {
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uniform_cameras[p_idx] = p_mat;
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uniforms_dirty = true;
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};
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_FORCE_INLINE_ void set_custom_uniform(int p_idx, const Variant& p_value) {
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ERR_FAIL_COND(!version);
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ERR_FAIL_INDEX(p_idx,version->custom_uniform_locations.size());
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_set_uniform_variant( version->custom_uniform_locations[p_idx], p_value );
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}
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_FORCE_INLINE_ GLint get_custom_uniform_location(int p_idx) {
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ERR_FAIL_COND_V(!version,-1);
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ERR_FAIL_INDEX_V(p_idx,version->custom_uniform_locations.size(),-1);
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return version->custom_uniform_locations[p_idx];
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}
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virtual void init()=0;
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void finish();
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virtual ~ShaderGLES2();
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};
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// called a lot, made inline
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int ShaderGLES2::_get_uniform(int p_which) const {
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ERR_FAIL_INDEX_V( p_which, uniform_count,-1 );
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ERR_FAIL_COND_V( !version, -1 );
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return version->uniform_location[p_which];
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}
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void ShaderGLES2::_set_conditional(int p_which, bool p_value) {
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ERR_FAIL_INDEX(p_which,conditional_count);
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if (p_value)
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new_conditional_version.version|=(1<<p_which);
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else
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new_conditional_version.version&=~(1<<p_which);
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}
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#endif
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#endif
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