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[Feat] (MG_Util/ShaderTranspiler): Implement simple shader compile

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swung0x48
2025-07-20 19:54:29 +08:00
parent 0388cd316b
commit 18675f72f3
13 changed files with 436 additions and 10 deletions
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MobileGL/MG_Util/Converters/GLToGlslang/GLShaderLangConverter.cpp
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//
// Created by Swung 0x48 on 2025/7/20.
//
#include "Includes.h"
namespace MobileGL {
namespace MG_Util {
EShLanguage ConvertGLEnumToEShLanguage(GLenum shaderType) {
switch (shaderType) {
case GL_VERTEX_SHADER:
return EShLanguage::EShLangVertex;
case GL_FRAGMENT_SHADER:
return EShLanguage::EShLangFragment;
case GL_COMPUTE_SHADER:
return EShLanguage::EShLangCompute;
case GL_TESS_CONTROL_SHADER:
return EShLanguage::EShLangTessControl;
case GL_TESS_EVALUATION_SHADER:
return EShLanguage::EShLangTessEvaluation;
case GL_GEOMETRY_SHADER:
return EShLanguage::EShLangGeometry;
default:
return EShLanguage::EShLangCount;
}
}
}
}
MobileGL/MG_Util/Converters/GLToGlslang/GLShaderLangConverter.h
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//
// Created by Swung 0x48 on 2025/7/20.
//
#ifndef MOBILEGL_GLSHADERLANGCONVERTER_H
#define MOBILEGL_GLSHADERLANGCONVERTER_H
namespace MobileGL {
namespace MG_Util {
EShLanguage ConvertGLEnumToEShLanguage(GLenum shaderType);
}
}
#endif //MOBILEGL_GLSHADERLANGCONVERTER_H
MobileGL/MG_Util/ShaderTranspiler/ShaderCompiler.cpp
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//
// Created by Swung 0x48 on 2025/7/20.
//
#include "Includes.h"
namespace MobileGL {
namespace MG_Util {
namespace ShaderTranspiler {
TBuiltInResource& GetTBuiltInResourceInstance()
{
static TBuiltInResource Resources{};
Resources.maxLights = 32;
Resources.maxClipPlanes = 6;
Resources.maxTextureUnits = 32;
Resources.maxTextureCoords = 32;
Resources.maxVertexAttribs = 64;
Resources.maxVertexUniformComponents = 4096;
Resources.maxVaryingFloats = 64;
Resources.maxVertexTextureImageUnits = 32;
Resources.maxCombinedTextureImageUnits = 80;
Resources.maxTextureImageUnits = 32;
Resources.maxFragmentUniformComponents = 4096;
Resources.maxDrawBuffers = 32;
Resources.maxVertexUniformVectors = 128;
Resources.maxVaryingVectors = 8;
Resources.maxFragmentUniformVectors = 16;
Resources.maxVertexOutputVectors = 16;
Resources.maxFragmentInputVectors = 15;
Resources.minProgramTexelOffset = -8;
Resources.maxProgramTexelOffset = 7;
Resources.maxClipDistances = 8;
Resources.maxComputeWorkGroupCountX = 65535;
Resources.maxComputeWorkGroupCountY = 65535;
Resources.maxComputeWorkGroupCountZ = 65535;
Resources.maxComputeWorkGroupSizeX = 1024;
Resources.maxComputeWorkGroupSizeY = 1024;
Resources.maxComputeWorkGroupSizeZ = 64;
Resources.maxComputeUniformComponents = 1024;
Resources.maxComputeTextureImageUnits = 16;
Resources.maxComputeImageUniforms = 8;
Resources.maxComputeAtomicCounters = 8;
Resources.maxComputeAtomicCounterBuffers = 1;
Resources.maxVaryingComponents = 60;
Resources.maxVertexOutputComponents = 64;
Resources.maxGeometryInputComponents = 64;
Resources.maxGeometryOutputComponents = 128;
Resources.maxFragmentInputComponents = 128;
Resources.maxImageUnits = 8;
Resources.maxCombinedImageUnitsAndFragmentOutputs = 8;
Resources.maxCombinedShaderOutputResources = 8;
Resources.maxImageSamples = 0;
Resources.maxVertexImageUniforms = 0;
Resources.maxTessControlImageUniforms = 0;
Resources.maxTessEvaluationImageUniforms = 0;
Resources.maxGeometryImageUniforms = 0;
Resources.maxFragmentImageUniforms = 8;
Resources.maxCombinedImageUniforms = 8;
Resources.maxGeometryTextureImageUnits = 16;
Resources.maxGeometryOutputVertices = 256;
Resources.maxGeometryTotalOutputComponents = 1024;
Resources.maxGeometryUniformComponents = 1024;
Resources.maxGeometryVaryingComponents = 64;
Resources.maxTessControlInputComponents = 128;
Resources.maxTessControlOutputComponents = 128;
Resources.maxTessControlTextureImageUnits = 16;
Resources.maxTessControlUniformComponents = 1024;
Resources.maxTessControlTotalOutputComponents = 4096;
Resources.maxTessEvaluationInputComponents = 128;
Resources.maxTessEvaluationOutputComponents = 128;
Resources.maxTessEvaluationTextureImageUnits = 16;
Resources.maxTessEvaluationUniformComponents = 1024;
Resources.maxTessPatchComponents = 120;
Resources.maxPatchVertices = 32;
Resources.maxTessGenLevel = 64;
Resources.maxViewports = 16;
Resources.maxVertexAtomicCounters = 0;
Resources.maxTessControlAtomicCounters = 0;
Resources.maxTessEvaluationAtomicCounters = 0;
Resources.maxGeometryAtomicCounters = 0;
Resources.maxFragmentAtomicCounters = 8;
Resources.maxCombinedAtomicCounters = 8;
Resources.maxAtomicCounterBindings = 1;
Resources.maxVertexAtomicCounterBuffers = 0;
Resources.maxTessControlAtomicCounterBuffers = 0;
Resources.maxTessEvaluationAtomicCounterBuffers = 0;
Resources.maxGeometryAtomicCounterBuffers = 0;
Resources.maxFragmentAtomicCounterBuffers = 1;
Resources.maxCombinedAtomicCounterBuffers = 1;
Resources.maxAtomicCounterBufferSize = 16384;
Resources.maxTransformFeedbackBuffers = 4;
Resources.maxTransformFeedbackInterleavedComponents = 64;
Resources.maxCullDistances = 8;
Resources.maxCombinedClipAndCullDistances = 8;
Resources.maxSamples = 4;
Resources.maxMeshOutputVerticesNV = 256;
Resources.maxMeshOutputPrimitivesNV = 512;
Resources.maxMeshWorkGroupSizeX_NV = 32;
Resources.maxMeshWorkGroupSizeY_NV = 1;
Resources.maxMeshWorkGroupSizeZ_NV = 1;
Resources.maxTaskWorkGroupSizeX_NV = 32;
Resources.maxTaskWorkGroupSizeY_NV = 1;
Resources.maxTaskWorkGroupSizeZ_NV = 1;
Resources.maxMeshViewCountNV = 4;
Resources.limits.nonInductiveForLoops = true;
Resources.limits.whileLoops = true;
Resources.limits.doWhileLoops = true;
Resources.limits.generalUniformIndexing = true;
Resources.limits.generalAttributeMatrixVectorIndexing = true;
Resources.limits.generalVaryingIndexing = true;
Resources.limits.generalSamplerIndexing = true;
Resources.limits.generalVariableIndexing = true;
Resources.limits.generalConstantMatrixVectorIndexing = true;
return Resources;
}
CompilerResult ShaderCompiler::CompileShader(const ShaderAttrib& attrib) {
auto shaderType = attrib.shaderType;
auto sourceStr = attrib.sourceStr;
auto lang = GetEShLanguageByShaderType(shaderType);
if (lang == EShLanguage::EShLangCount) {
ShaderCompileResult<false> r;
r.log += "Error: [Preprocess] Unsupported shader type: " +
ConvertGLEnumToString(shaderType);
r.errc = -1;
return std::unexpected(r);
}
ShaderCompileResult<true> res;
auto& tshader = res.TShader;
tshader = MakeUnique<glslang::TShader>(lang);
const char* src[] = { sourceStr.c_str() };
tshader->setStrings(src, 1);
tshader->setInvertY(true);
tshader->setEnvInput(glslang::EShSourceGlsl, lang, glslang::EShClientVulkan, 450);
tshader->setEnvClient(glslang::EShClientOpenGL, glslang::EShTargetOpenGL_450);
tshader->setEnvTarget(glslang::EShTargetSpv, glslang::EShTargetSpv_1_6);
tshader->setAutoMapLocations(true);
tshader->setAutoMapBindings(true);
tshader->setEnvInputVulkanRulesRelaxed(); // using EXT_vulkan_glsl_relaxed for gl_VertexID and gl_InstanceID?
if (!tshader->parse(&GetTBuiltInResourceInstance(), 150, ECompatibilityProfile,
/*forceDefaultVersionAndProfile: */false,
/*forwardCompatible: */true, EShMsgDefault)) {
ShaderCompileResult<false> r;
r.log += "Error: [glslang] Cannot compile " + ConvertGLEnumToString(shaderType) + ":\n"
+ std::string(tshader->getInfoLog());
r.errc = -2;
return std::unexpected(r);
}
return res;
}
}
}
}
MobileGL/MG_Util/ShaderTranspiler/ShaderCompiler.h
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//
// Created by Swung 0x48 on 2025/7/20.
//
#ifndef MOBILEGLTEST_SHADERCOMPILER_H
#define MOBILEGLTEST_SHADERCOMPILER_H
namespace MobileGL {
namespace MG_Util {
namespace ShaderTranspiler {
class ShaderCompiler {
public:
static CompilerResult CompileShader(const ShaderAttrib& attrib);
};
}
}
}
#endif //MOBILEGLTEST_SHADERCOMPILER_H
MobileGL/MG_Util/ShaderTranspiler/Types.h
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//
// Created by Swung 0x48 on 2025/7/20.
//
#ifndef MG_UTIL_SHADERTRANSPILER_TYPES_H
#define MG_UTIL_SHADERTRANSPILER_TYPES_H
namespace MobileGL {
namespace MG_Util {
namespace ShaderTranspiler {
enum class TUniformType {
Uniform,
Sampler
};
template <TUniformType T>
struct TUniform {
static_assert(false, "TUniform<T> does not accept this enum");
};
template <>
struct TUniform<TUniformType::Uniform> {
String name;
glslang::TStorageQualifier storageQualifier;
Uint layoutLocation = 0;
Uint layoutBinding = 0;
glslang::TLayoutPacking layoutPacking;
};
template <>
struct TUniform<TUniformType::Sampler> {
String name;
glslang::TSampler sampler;
};
struct EmptyType {};
struct ShaderAttrib {
GLenum shaderType;
String sourceStr;
};
struct CompiledTShader {
UniquePtr<glslang::TShader> TShader;
Vector<TUniform<TUniformType::Uniform>> uniforms;
Vector<TUniform<TUniformType::Sampler>> samplers;
};
template <bool Succeeded>
struct ShaderCompileResult:
public std::conditional_t<Succeeded, CompiledTShader, EmptyType> {
Int errc = 0;
String log;
};
using CompilerResult = std::expected<ShaderCompileResult<true>, ShaderCompileResult<false>>;
struct ShaderPayload {
// In
GLenum shaderType;
String sourceStr;
// Out
UniquePtr<glslang::TShader> TShader;
Vector<TUniform<TUniformType::Uniform>> uniforms;
Vector<TUniform<TUniformType::Sampler>> samplers;
Int errc = 0;
String log;
};
struct ProgramPayload {
// In
Vector<GLenum> shaderTypes;
Vector<UniquePtr<glslang::TShader>> shadersToLink;
// Out
glslang::TProgram linkedProgram;
Vector<Vector<Uint>> programSpirv;
Int errc = 0;
String log;
};
inline static EShLanguage GetEShLanguageByShaderType(GLenum shaderType) {
switch (shaderType) {
case GL_VERTEX_SHADER:
return EShLanguage::EShLangVertex;
case GL_FRAGMENT_SHADER:
return EShLanguage::EShLangFragment;
case GL_COMPUTE_SHADER:
return EShLanguage::EShLangCompute;
case GL_TESS_CONTROL_SHADER:
return EShLanguage::EShLangTessControl;
case GL_TESS_EVALUATION_SHADER:
return EShLanguage::EShLangTessEvaluation;
case GL_GEOMETRY_SHADER:
return EShLanguage::EShLangGeometry;
default:
return EShLanguage::EShLangCount;
}
}
}
}
}
#include "ShaderCompiler.h"
#endif //MG_UTIL_SHADERTRANSPILER_TYPES_H
MobileGL/MG_Util/ShaderTranspiler/glslang/UniformTraverser.cpp
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//
// Created by Swung 0x48 on 2025/7/20.
//
#include "Includes.h"
namespace MobileGL {
namespace MG_Util {
namespace ShaderTranspiler {
void UniformTraverser::visitSymbol(glslang::TIntermSymbol *symbol) {
const auto &type = symbol->getType();
if (symbol->getQualifier().isUniform()) {
auto name = symbol->getName();
auto qualifier = symbol->getQualifier();
auto &uniform = uniforms.emplace_back();
uniform.name = name;
uniform.storageQualifier = qualifier.storage;
uniform.layoutLocation = qualifier.layoutLocation;
uniform.layoutBinding = qualifier.layoutBinding;
uniform.layoutPacking = qualifier.layoutPacking;
} else if (type.getBasicType() == glslang::EbtSampler) {
auto &uniform = samplers.emplace_back();
uniform.name = symbol->getName();
uniform.sampler = type.getSampler();
}
}
}
}
}
MobileGL/MG_Util/ShaderTranspiler/glslang/UniformTraverser.h
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//
// Created by Swung 0x48 on 2025/7/20.
//
#ifndef MOBILEGL_UNIFORMTRAVERSER_H
#define MOBILEGL_UNIFORMTRAVERSER_H
namespace MobileGL {
namespace MG_Util {
namespace ShaderTranspiler {
class UniformTraverser : public glslang::TIntermTraverser {
public:
UniformTraverser(Vector<TUniform<TUniformType::Uniform>> &u, Vector<TUniform<TUniformType::Sampler>> &s)
: uniforms(u), samplers(s) {}
void visitSymbol(glslang::TIntermSymbol *symbol) override;
Vector<TUniform<TUniformType::Uniform>> &uniforms;
Vector<TUniform<TUniformType::Sampler>> &samplers;
};
}
}
}
#endif //MOBILEGL_UNIFORMTRAVERSER_H
MobileGL/MG_Util/Types.h
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@@ -162,4 +162,4 @@ namespace MobileGL {
};
}
#include "Pipelines/Types.h"
#include "MG_Util/ShaderTranspiler/Types.h"