diff options
Diffstat (limited to 'src/3rdparty/angle/src/compiler/translator/ShaderLang.cpp')
| -rw-r--r-- | src/3rdparty/angle/src/compiler/translator/ShaderLang.cpp | 390 |
1 files changed, 390 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/compiler/translator/ShaderLang.cpp b/src/3rdparty/angle/src/compiler/translator/ShaderLang.cpp new file mode 100644 index 0000000000..608237860c --- /dev/null +++ b/src/3rdparty/angle/src/compiler/translator/ShaderLang.cpp @@ -0,0 +1,390 @@ +// +// Copyright (c) 2002-2012 The ANGLE Project Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. +// + +// +// Implement the top-level of interface to the compiler, +// as defined in ShaderLang.h +// + +#include "GLSLANG/ShaderLang.h" + +#include "compiler/translator/InitializeDll.h" +#include "compiler/preprocessor/length_limits.h" +#include "compiler/translator/ShHandle.h" +#include "compiler/translator/TranslatorHLSL.h" +#include "compiler/translator/VariablePacker.h" + +// +// This is the platform independent interface between an OGL driver +// and the shading language compiler. +// + +static bool checkVariableMaxLengths(const ShHandle handle, + size_t expectedValue) +{ + size_t activeUniformLimit = 0; + ShGetInfo(handle, SH_ACTIVE_UNIFORM_MAX_LENGTH, &activeUniformLimit); + size_t activeAttribLimit = 0; + ShGetInfo(handle, SH_ACTIVE_ATTRIBUTE_MAX_LENGTH, &activeAttribLimit); + size_t varyingLimit = 0; + ShGetInfo(handle, SH_VARYING_MAX_LENGTH, &varyingLimit); + return (expectedValue == activeUniformLimit && + expectedValue == activeAttribLimit && + expectedValue == varyingLimit); +} + +static bool checkMappedNameMaxLength(const ShHandle handle, size_t expectedValue) +{ + size_t mappedNameMaxLength = 0; + ShGetInfo(handle, SH_MAPPED_NAME_MAX_LENGTH, &mappedNameMaxLength); + return (expectedValue == mappedNameMaxLength); +} + +// +// Driver must call this first, once, before doing any other compiler operations. +// Subsequent calls to this function are no-op. +// +int ShInitialize() +{ + static const bool kInitialized = InitProcess(); + return kInitialized ? 1 : 0; +} + +// +// Cleanup symbol tables +// +int ShFinalize() +{ + DetachProcess(); + return 1; +} + +// +// Initialize built-in resources with minimum expected values. +// +void ShInitBuiltInResources(ShBuiltInResources* resources) +{ + // Constants. + resources->MaxVertexAttribs = 8; + resources->MaxVertexUniformVectors = 128; + resources->MaxVaryingVectors = 8; + resources->MaxVertexTextureImageUnits = 0; + resources->MaxCombinedTextureImageUnits = 8; + resources->MaxTextureImageUnits = 8; + resources->MaxFragmentUniformVectors = 16; + resources->MaxDrawBuffers = 1; + + // Extensions. + resources->OES_standard_derivatives = 0; + resources->OES_EGL_image_external = 0; + resources->ARB_texture_rectangle = 0; + resources->EXT_draw_buffers = 0; + resources->EXT_frag_depth = 0; + + // Disable highp precision in fragment shader by default. + resources->FragmentPrecisionHigh = 0; + + // Disable name hashing by default. + resources->HashFunction = NULL; + + resources->ArrayIndexClampingStrategy = SH_CLAMP_WITH_CLAMP_INTRINSIC; + + resources->MaxExpressionComplexity = 256; + resources->MaxCallStackDepth = 256; +} + +// +// Driver calls these to create and destroy compiler objects. +// +ShHandle ShConstructCompiler(ShShaderType type, ShShaderSpec spec, + ShShaderOutput output, + const ShBuiltInResources* resources) +{ + TShHandleBase* base = static_cast<TShHandleBase*>(ConstructCompiler(type, spec, output)); + TCompiler* compiler = base->getAsCompiler(); + if (compiler == 0) + return 0; + + // Generate built-in symbol table. + if (!compiler->Init(*resources)) { + ShDestruct(base); + return 0; + } + + return reinterpret_cast<void*>(base); +} + +void ShDestruct(ShHandle handle) +{ + if (handle == 0) + return; + + TShHandleBase* base = static_cast<TShHandleBase*>(handle); + + if (base->getAsCompiler()) + DeleteCompiler(base->getAsCompiler()); +} + +// +// Do an actual compile on the given strings. The result is left +// in the given compile object. +// +// Return: The return value of ShCompile is really boolean, indicating +// success or failure. +// +int ShCompile( + const ShHandle handle, + const char* const shaderStrings[], + size_t numStrings, + int compileOptions) +{ + if (handle == 0) + return 0; + + TShHandleBase* base = reinterpret_cast<TShHandleBase*>(handle); + TCompiler* compiler = base->getAsCompiler(); + if (compiler == 0) + return 0; + + bool success = compiler->compile(shaderStrings, numStrings, compileOptions); + return success ? 1 : 0; +} + +void ShGetInfo(const ShHandle handle, ShShaderInfo pname, size_t* params) +{ + if (!handle || !params) + return; + + TShHandleBase* base = static_cast<TShHandleBase*>(handle); + TCompiler* compiler = base->getAsCompiler(); + if (!compiler) return; + + switch(pname) + { + case SH_INFO_LOG_LENGTH: + *params = compiler->getInfoSink().info.size() + 1; + break; + case SH_OBJECT_CODE_LENGTH: + *params = compiler->getInfoSink().obj.size() + 1; + break; + case SH_ACTIVE_UNIFORMS: + *params = compiler->getUniforms().size(); + break; + case SH_ACTIVE_UNIFORM_MAX_LENGTH: + *params = 1 + MAX_SYMBOL_NAME_LEN; + break; + case SH_ACTIVE_ATTRIBUTES: + *params = compiler->getAttribs().size(); + break; + case SH_ACTIVE_ATTRIBUTE_MAX_LENGTH: + *params = 1 + MAX_SYMBOL_NAME_LEN; + break; + case SH_VARYINGS: + *params = compiler->getVaryings().size(); + break; + case SH_VARYING_MAX_LENGTH: + *params = 1 + MAX_SYMBOL_NAME_LEN; + break; + case SH_MAPPED_NAME_MAX_LENGTH: + // Use longer length than MAX_SHORTENED_IDENTIFIER_SIZE to + // handle array and struct dereferences. + *params = 1 + MAX_SYMBOL_NAME_LEN; + break; + case SH_NAME_MAX_LENGTH: + *params = 1 + MAX_SYMBOL_NAME_LEN; + break; + case SH_HASHED_NAME_MAX_LENGTH: + if (compiler->getHashFunction() == NULL) { + *params = 0; + } else { + // 64 bits hashing output requires 16 bytes for hex + // representation. + const char HashedNamePrefix[] = HASHED_NAME_PREFIX; + *params = 16 + sizeof(HashedNamePrefix); + } + break; + case SH_HASHED_NAMES_COUNT: + *params = compiler->getNameMap().size(); + break; + default: UNREACHABLE(); + } +} + +// +// Return any compiler log of messages for the application. +// +void ShGetInfoLog(const ShHandle handle, char* infoLog) +{ + if (!handle || !infoLog) + return; + + TShHandleBase* base = static_cast<TShHandleBase*>(handle); + TCompiler* compiler = base->getAsCompiler(); + if (!compiler) return; + + TInfoSink& infoSink = compiler->getInfoSink(); + strcpy(infoLog, infoSink.info.c_str()); +} + +// +// Return any object code. +// +void ShGetObjectCode(const ShHandle handle, char* objCode) +{ + if (!handle || !objCode) + return; + + TShHandleBase* base = static_cast<TShHandleBase*>(handle); + TCompiler* compiler = base->getAsCompiler(); + if (!compiler) return; + + TInfoSink& infoSink = compiler->getInfoSink(); + strcpy(objCode, infoSink.obj.c_str()); +} + +void ShGetVariableInfo(const ShHandle handle, + ShShaderInfo varType, + int index, + size_t* length, + int* size, + ShDataType* type, + ShPrecisionType* precision, + int* staticUse, + char* name, + char* mappedName) +{ + if (!handle || !size || !type || !precision || !staticUse || !name) + return; + ASSERT((varType == SH_ACTIVE_ATTRIBUTES) || + (varType == SH_ACTIVE_UNIFORMS) || + (varType == SH_VARYINGS)); + + TShHandleBase* base = reinterpret_cast<TShHandleBase*>(handle); + TCompiler* compiler = base->getAsCompiler(); + if (compiler == 0) + return; + + const TVariableInfoList& varList = + varType == SH_ACTIVE_ATTRIBUTES ? compiler->getAttribs() : + (varType == SH_ACTIVE_UNIFORMS ? compiler->getUniforms() : + compiler->getVaryings()); + if (index < 0 || index >= static_cast<int>(varList.size())) + return; + + const TVariableInfo& varInfo = varList[index]; + if (length) *length = varInfo.name.size(); + *size = varInfo.size; + *type = varInfo.type; + switch (varInfo.precision) { + case EbpLow: + *precision = SH_PRECISION_LOWP; + break; + case EbpMedium: + *precision = SH_PRECISION_MEDIUMP; + break; + case EbpHigh: + *precision = SH_PRECISION_HIGHP; + break; + default: + // Some types does not support precision, for example, boolean. + *precision = SH_PRECISION_UNDEFINED; + break; + } + *staticUse = varInfo.staticUse ? 1 : 0; + + // This size must match that queried by + // SH_ACTIVE_UNIFORM_MAX_LENGTH, SH_ACTIVE_ATTRIBUTE_MAX_LENGTH, SH_VARYING_MAX_LENGTH + // in ShGetInfo, below. + size_t variableLength = 1 + MAX_SYMBOL_NAME_LEN; + ASSERT(checkVariableMaxLengths(handle, variableLength)); + strncpy(name, varInfo.name.c_str(), variableLength); + name[variableLength - 1] = 0; + if (mappedName) { + // This size must match that queried by + // SH_MAPPED_NAME_MAX_LENGTH in ShGetInfo, below. + size_t maxMappedNameLength = 1 + MAX_SYMBOL_NAME_LEN; + ASSERT(checkMappedNameMaxLength(handle, maxMappedNameLength)); + strncpy(mappedName, varInfo.mappedName.c_str(), maxMappedNameLength); + mappedName[maxMappedNameLength - 1] = 0; + } +} + +void ShGetNameHashingEntry(const ShHandle handle, + int index, + char* name, + char* hashedName) +{ + if (!handle || !name || !hashedName || index < 0) + return; + + TShHandleBase* base = static_cast<TShHandleBase*>(handle); + TCompiler* compiler = base->getAsCompiler(); + if (!compiler) return; + + const NameMap& nameMap = compiler->getNameMap(); + if (index >= static_cast<int>(nameMap.size())) + return; + + NameMap::const_iterator it = nameMap.begin(); + for (int i = 0; i < index; ++i) + ++it; + + size_t len = it->first.length() + 1; + size_t max_len = 0; + ShGetInfo(handle, SH_NAME_MAX_LENGTH, &max_len); + if (len > max_len) { + ASSERT(false); + len = max_len; + } + strncpy(name, it->first.c_str(), len); + // To be on the safe side in case the source is longer than expected. + name[len - 1] = '\0'; + + len = it->second.length() + 1; + max_len = 0; + ShGetInfo(handle, SH_HASHED_NAME_MAX_LENGTH, &max_len); + if (len > max_len) { + ASSERT(false); + len = max_len; + } + strncpy(hashedName, it->second.c_str(), len); + // To be on the safe side in case the source is longer than expected. + hashedName[len - 1] = '\0'; +} + +void ShGetInfoPointer(const ShHandle handle, ShShaderInfo pname, void** params) +{ + if (!handle || !params) + return; + + TShHandleBase* base = static_cast<TShHandleBase*>(handle); + TranslatorHLSL* translator = base->getAsTranslatorHLSL(); + if (!translator) return; + + switch(pname) + { + case SH_ACTIVE_UNIFORMS_ARRAY: + *params = (void*)&translator->getUniforms(); + break; + default: UNREACHABLE(); + } +} + +int ShCheckVariablesWithinPackingLimits( + int maxVectors, ShVariableInfo* varInfoArray, size_t varInfoArraySize) +{ + if (varInfoArraySize == 0) + return 1; + ASSERT(varInfoArray); + TVariableInfoList variables; + for (size_t ii = 0; ii < varInfoArraySize; ++ii) + { + TVariableInfo var(varInfoArray[ii].type, varInfoArray[ii].size); + variables.push_back(var); + } + VariablePacker packer; + return packer.CheckVariablesWithinPackingLimits(maxVectors, variables) ? 1 : 0; +} |