8247667a3e
We've been using standard C library functions `memcpy`/`memset` for these since
2016 with 67f65f6639.
There was still the possibility for third-party platform ports to override the
definitions with a custom header, but this doesn't seem useful anymore.
195 lines
7.5 KiB
C++
195 lines
7.5 KiB
C++
/*************************************************************************/
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/* register_types.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
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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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#include "register_types.h"
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#include "servers/rendering/rendering_device.h"
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#include <SPIRV/GlslangToSpv.h>
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#include <StandAlone/ResourceLimits.h>
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#include <glslang/Include/Types.h>
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#include <glslang/Public/ShaderLang.h>
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static Vector<uint8_t> _compile_shader_glsl(RenderingDevice::ShaderStage p_stage, const String &p_source_code, RenderingDevice::ShaderLanguage p_language, String *r_error, const RenderingDevice::Capabilities *p_capabilities) {
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Vector<uint8_t> ret;
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ERR_FAIL_COND_V(p_language == RenderingDevice::SHADER_LANGUAGE_HLSL, ret);
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EShLanguage stages[RenderingDevice::SHADER_STAGE_MAX] = {
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EShLangVertex,
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EShLangFragment,
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EShLangTessControl,
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EShLangTessEvaluation,
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EShLangCompute
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};
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int ClientInputSemanticsVersion = 100; // maps to, say, #define VULKAN 100
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bool check_subgroup_support = true; // assume we support subgroups
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glslang::EShTargetClientVersion ClientVersion = glslang::EShTargetVulkan_1_2;
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glslang::EShTargetLanguageVersion TargetVersion = glslang::EShTargetSpv_1_5;
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glslang::TShader::ForbidIncluder includer;
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if (p_capabilities->device_family == RenderingDevice::DeviceFamily::DEVICE_VULKAN) {
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if (p_capabilities->version_major == 1 && p_capabilities->version_minor == 0) {
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ClientVersion = glslang::EShTargetVulkan_1_0;
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TargetVersion = glslang::EShTargetSpv_1_0;
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check_subgroup_support = false; // subgroups are not supported in Vulkan 1.0
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} else if (p_capabilities->version_major == 1 && p_capabilities->version_minor == 1) {
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ClientVersion = glslang::EShTargetVulkan_1_1;
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TargetVersion = glslang::EShTargetSpv_1_3;
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} else {
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// use defaults
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}
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} else {
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// once we support other backends we'll need to do something here
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if (r_error) {
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(*r_error) = "GLSLANG - Unsupported device family";
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}
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return ret;
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}
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glslang::TShader shader(stages[p_stage]);
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CharString cs = p_source_code.ascii();
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const char *cs_strings = cs.get_data();
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std::string preamble = "";
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shader.setStrings(&cs_strings, 1);
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shader.setEnvInput(glslang::EShSourceGlsl, stages[p_stage], glslang::EShClientVulkan, ClientInputSemanticsVersion);
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shader.setEnvClient(glslang::EShClientVulkan, ClientVersion);
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shader.setEnvTarget(glslang::EShTargetSpv, TargetVersion);
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if (check_subgroup_support) {
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uint32_t stage_bit = 1 << p_stage;
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if ((p_capabilities->subgroup_in_shaders & stage_bit) == stage_bit) {
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// stage supports subgroups
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preamble += "#define has_GL_KHR_shader_subgroup_basic 1\n";
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if (p_capabilities->subgroup_operations & RenderingDevice::SUBGROUP_VOTE_BIT) {
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preamble += "#define has_GL_KHR_shader_subgroup_vote 1\n";
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}
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if (p_capabilities->subgroup_operations & RenderingDevice::SUBGROUP_ARITHMETIC_BIT) {
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preamble += "#define has_GL_KHR_shader_subgroup_arithmetic 1\n";
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}
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if (p_capabilities->subgroup_operations & RenderingDevice::SUBGROUP_BALLOT_BIT) {
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preamble += "#define has_GL_KHR_shader_subgroup_ballot 1\n";
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}
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if (p_capabilities->subgroup_operations & RenderingDevice::SUBGROUP_SHUFFLE_BIT) {
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preamble += "#define has_GL_KHR_shader_subgroup_shuffle 1\n";
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}
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if (p_capabilities->subgroup_operations & RenderingDevice::SUBGROUP_SHUFFLE_RELATIVE_BIT) {
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preamble += "#define has_GL_KHR_shader_subgroup_shuffle_relative 1\n";
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}
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if (p_capabilities->subgroup_operations & RenderingDevice::SUBGROUP_CLUSTERED_BIT) {
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preamble += "#define has_GL_KHR_shader_subgroup_clustered 1\n";
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}
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if (p_capabilities->subgroup_operations & RenderingDevice::SUBGROUP_QUAD_BIT) {
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preamble += "#define has_GL_KHR_shader_subgroup_quad 1\n";
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}
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}
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}
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if (preamble != "") {
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shader.setPreamble(preamble.c_str());
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}
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EShMessages messages = (EShMessages)(EShMsgSpvRules | EShMsgVulkanRules);
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const int DefaultVersion = 100;
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std::string pre_processed_code;
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//preprocess
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if (!shader.preprocess(&glslang::DefaultTBuiltInResource, DefaultVersion, ENoProfile, false, false, messages, &pre_processed_code, includer)) {
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if (r_error) {
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(*r_error) = "Failed pre-process:\n";
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(*r_error) += shader.getInfoLog();
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(*r_error) += "\n";
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(*r_error) += shader.getInfoDebugLog();
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}
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return ret;
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}
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//set back..
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cs_strings = pre_processed_code.c_str();
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shader.setStrings(&cs_strings, 1);
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//parse
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if (!shader.parse(&glslang::DefaultTBuiltInResource, DefaultVersion, false, messages)) {
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if (r_error) {
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(*r_error) = "Failed parse:\n";
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(*r_error) += shader.getInfoLog();
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(*r_error) += "\n";
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(*r_error) += shader.getInfoDebugLog();
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}
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return ret;
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}
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//link
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glslang::TProgram program;
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program.addShader(&shader);
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if (!program.link(messages)) {
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if (r_error) {
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(*r_error) = "Failed link:\n";
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(*r_error) += program.getInfoLog();
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(*r_error) += "\n";
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(*r_error) += program.getInfoDebugLog();
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}
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return ret;
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}
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std::vector<uint32_t> SpirV;
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spv::SpvBuildLogger logger;
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glslang::SpvOptions spvOptions;
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glslang::GlslangToSpv(*program.getIntermediate(stages[p_stage]), SpirV, &logger, &spvOptions);
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ret.resize(SpirV.size() * sizeof(uint32_t));
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{
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uint8_t *w = ret.ptrw();
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memcpy(w, &SpirV[0], SpirV.size() * sizeof(uint32_t));
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}
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return ret;
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}
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void preregister_glslang_types() {
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// initialize in case it's not initialized. This is done once per thread
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// and it's safe to call multiple times
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glslang::InitializeProcess();
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RenderingDevice::shader_set_compile_function(_compile_shader_glsl);
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}
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void register_glslang_types() {
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}
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void unregister_glslang_types() {
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glslang::FinalizeProcess();
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}
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