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Diffstat (limited to 'src/3rdparty/angle/src/compiler/translator/ValidateVaryingLocations.cpp')
| -rw-r--r-- | src/3rdparty/angle/src/compiler/translator/ValidateVaryingLocations.cpp | 174 |
1 files changed, 0 insertions, 174 deletions
diff --git a/src/3rdparty/angle/src/compiler/translator/ValidateVaryingLocations.cpp b/src/3rdparty/angle/src/compiler/translator/ValidateVaryingLocations.cpp deleted file mode 100644 index 9c36fcea78..0000000000 --- a/src/3rdparty/angle/src/compiler/translator/ValidateVaryingLocations.cpp +++ /dev/null @@ -1,174 +0,0 @@ -// -// Copyright (c) 2002-2017 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. -// -// The ValidateVaryingLocations function checks if there exists location conflicts on shader -// varyings. -// - -#include "ValidateVaryingLocations.h" - -#include "compiler/translator/Diagnostics.h" -#include "compiler/translator/IntermTraverse.h" -#include "compiler/translator/util.h" - -namespace sh -{ - -namespace -{ - -void error(const TIntermSymbol &symbol, const char *reason, TDiagnostics *diagnostics) -{ - diagnostics->error(symbol.getLine(), reason, symbol.getSymbol().c_str()); -} - -int GetLocationCount(const TIntermSymbol *varying, bool ignoreVaryingArraySize) -{ - const auto &varyingType = varying->getType(); - if (varyingType.getStruct() != nullptr) - { - ASSERT(!varyingType.isArray()); - int totalLocation = 0; - for (const auto *field : varyingType.getStruct()->fields()) - { - const auto *fieldType = field->type(); - ASSERT(fieldType->getStruct() == nullptr && !fieldType->isArray()); - - totalLocation += fieldType->getSecondarySize(); - } - return totalLocation; - } - // [GL_OES_shader_io_blocks SPEC Chapter 4.4.1] - // Geometry shader inputs, tessellation control shader inputs and outputs, and tessellation - // evaluation inputs all have an additional level of arrayness relative to other shader inputs - // and outputs. This outer array level is removed from the type before considering how many - // locations the type consumes. - else if (ignoreVaryingArraySize) - { - // Array-of-arrays cannot be inputs or outputs of a geometry shader. - // (GL_OES_geometry_shader SPEC issues(5)) - ASSERT(!varyingType.isArrayOfArrays()); - return varyingType.getSecondarySize(); - } - else - { - return varyingType.getSecondarySize() * static_cast<int>(varyingType.getArraySizeProduct()); - } -} - -using VaryingVector = std::vector<const TIntermSymbol *>; - -void ValidateShaderInterface(TDiagnostics *diagnostics, - VaryingVector &varyingVector, - bool ignoreVaryingArraySize) -{ - // Location conflicts can only happen when there are two or more varyings in varyingVector. - if (varyingVector.size() <= 1) - { - return; - } - - std::map<int, const TIntermSymbol *> locationMap; - for (const TIntermSymbol *varying : varyingVector) - { - const int location = varying->getType().getLayoutQualifier().location; - ASSERT(location >= 0); - - const int elementCount = GetLocationCount(varying, ignoreVaryingArraySize); - for (int elementIndex = 0; elementIndex < elementCount; ++elementIndex) - { - const int offsetLocation = location + elementIndex; - if (locationMap.find(offsetLocation) != locationMap.end()) - { - std::stringstream strstr; - strstr << "'" << varying->getSymbol() - << "' conflicting location with previously defined '" - << locationMap[offsetLocation]->getSymbol() << "'"; - error(*varying, strstr.str().c_str(), diagnostics); - } - else - { - locationMap[offsetLocation] = varying; - } - } - } -} - -class ValidateVaryingLocationsTraverser : public TIntermTraverser -{ - public: - ValidateVaryingLocationsTraverser(GLenum shaderType); - void validate(TDiagnostics *diagnostics); - - private: - bool visitDeclaration(Visit visit, TIntermDeclaration *node) override; - bool visitFunctionDefinition(Visit visit, TIntermFunctionDefinition *node) override; - - VaryingVector mInputVaryingsWithLocation; - VaryingVector mOutputVaryingsWithLocation; - GLenum mShaderType; -}; - -ValidateVaryingLocationsTraverser::ValidateVaryingLocationsTraverser(GLenum shaderType) - : TIntermTraverser(true, false, false), mShaderType(shaderType) -{ -} - -bool ValidateVaryingLocationsTraverser::visitDeclaration(Visit visit, TIntermDeclaration *node) -{ - const TIntermSequence &sequence = *(node->getSequence()); - ASSERT(!sequence.empty()); - - const TIntermSymbol *symbol = sequence.front()->getAsSymbolNode(); - if (symbol == nullptr) - { - return false; - } - - // Collect varyings that have explicit 'location' qualifiers. - const TQualifier qualifier = symbol->getQualifier(); - if (symbol->getType().getLayoutQualifier().location != -1) - { - if (IsVaryingIn(qualifier)) - { - mInputVaryingsWithLocation.push_back(symbol); - } - else if (IsVaryingOut(qualifier)) - { - mOutputVaryingsWithLocation.push_back(symbol); - } - } - - return false; -} - -bool ValidateVaryingLocationsTraverser::visitFunctionDefinition(Visit visit, - TIntermFunctionDefinition *node) -{ - // We stop traversing function definitions because varyings cannot be defined in a function. - return false; -} - -void ValidateVaryingLocationsTraverser::validate(TDiagnostics *diagnostics) -{ - ASSERT(diagnostics); - - ValidateShaderInterface(diagnostics, mInputVaryingsWithLocation, - mShaderType == GL_GEOMETRY_SHADER_OES); - ValidateShaderInterface(diagnostics, mOutputVaryingsWithLocation, false); -} - -} // anonymous namespace - -bool ValidateVaryingLocations(TIntermBlock *root, TDiagnostics *diagnostics, GLenum shaderType) -{ - ValidateVaryingLocationsTraverser varyingValidator(shaderType); - root->traverse(&varyingValidator); - int numErrorsBefore = diagnostics->numErrors(); - varyingValidator.validate(diagnostics); - return (diagnostics->numErrors() == numErrorsBefore); -} - -} // namespace sh
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