diff options
Diffstat (limited to 'src/3rdparty/angle/src/compiler/VariableInfo.cpp')
-rw-r--r-- | src/3rdparty/angle/src/compiler/VariableInfo.cpp | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/compiler/VariableInfo.cpp b/src/3rdparty/angle/src/compiler/VariableInfo.cpp new file mode 100644 index 0000000000..3ff283627b --- /dev/null +++ b/src/3rdparty/angle/src/compiler/VariableInfo.cpp @@ -0,0 +1,232 @@ +// +// Copyright (c) 2002-2010 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. +// + +#include "compiler/VariableInfo.h" + +static TString arrayBrackets(int index) +{ + TStringStream stream; + stream << "[" << index << "]"; + return stream.str(); +} + +// Returns the data type for an attribute or uniform. +static ShDataType getVariableDataType(const TType& type) +{ + switch (type.getBasicType()) { + case EbtFloat: + if (type.isMatrix()) { + switch (type.getNominalSize()) { + case 2: return SH_FLOAT_MAT2; + case 3: return SH_FLOAT_MAT3; + case 4: return SH_FLOAT_MAT4; + default: UNREACHABLE(); + } + } else if (type.isVector()) { + switch (type.getNominalSize()) { + case 2: return SH_FLOAT_VEC2; + case 3: return SH_FLOAT_VEC3; + case 4: return SH_FLOAT_VEC4; + default: UNREACHABLE(); + } + } else { + return SH_FLOAT; + } + case EbtInt: + if (type.isMatrix()) { + UNREACHABLE(); + } else if (type.isVector()) { + switch (type.getNominalSize()) { + case 2: return SH_INT_VEC2; + case 3: return SH_INT_VEC3; + case 4: return SH_INT_VEC4; + default: UNREACHABLE(); + } + } else { + return SH_INT; + } + case EbtBool: + if (type.isMatrix()) { + UNREACHABLE(); + } else if (type.isVector()) { + switch (type.getNominalSize()) { + case 2: return SH_BOOL_VEC2; + case 3: return SH_BOOL_VEC3; + case 4: return SH_BOOL_VEC4; + default: UNREACHABLE(); + } + } else { + return SH_BOOL; + } + case EbtSampler2D: return SH_SAMPLER_2D; + case EbtSamplerCube: return SH_SAMPLER_CUBE; + case EbtSamplerExternalOES: return SH_SAMPLER_EXTERNAL_OES; + case EbtSampler2DRect: return SH_SAMPLER_2D_RECT_ARB; + default: UNREACHABLE(); + } + return SH_NONE; +} + +static void getBuiltInVariableInfo(const TType& type, + const TString& name, + const TString& mappedName, + TVariableInfoList& infoList); +static void getUserDefinedVariableInfo(const TType& type, + const TString& name, + const TString& mappedName, + TVariableInfoList& infoList); + +// Returns info for an attribute or uniform. +static void getVariableInfo(const TType& type, + const TString& name, + const TString& mappedName, + TVariableInfoList& infoList) +{ + if (type.getBasicType() == EbtStruct) { + if (type.isArray()) { + for (int i = 0; i < type.getArraySize(); ++i) { + TString lname = name + arrayBrackets(i); + TString lmappedName = mappedName + arrayBrackets(i); + getUserDefinedVariableInfo(type, lname, lmappedName, infoList); + } + } else { + getUserDefinedVariableInfo(type, name, mappedName, infoList); + } + } else { + getBuiltInVariableInfo(type, name, mappedName, infoList); + } +} + +void getBuiltInVariableInfo(const TType& type, + const TString& name, + const TString& mappedName, + TVariableInfoList& infoList) +{ + ASSERT(type.getBasicType() != EbtStruct); + + TVariableInfo varInfo; + if (type.isArray()) { + varInfo.name = (name + "[0]").c_str(); + varInfo.mappedName = (mappedName + "[0]").c_str(); + varInfo.size = type.getArraySize(); + } else { + varInfo.name = name.c_str(); + varInfo.mappedName = mappedName.c_str(); + varInfo.size = 1; + } + varInfo.type = getVariableDataType(type); + infoList.push_back(varInfo); +} + +void getUserDefinedVariableInfo(const TType& type, + const TString& name, + const TString& mappedName, + TVariableInfoList& infoList) +{ + ASSERT(type.getBasicType() == EbtStruct); + + const TTypeList* structure = type.getStruct(); + for (size_t i = 0; i < structure->size(); ++i) { + const TType* fieldType = (*structure)[i].type; + getVariableInfo(*fieldType, + name + "." + fieldType->getFieldName(), + mappedName + "." + fieldType->getFieldName(), + infoList); + } +} + +TVariableInfo::TVariableInfo() +{ +} + +TVariableInfo::TVariableInfo(ShDataType type, int size) + : type(type), + size(size) +{ +} + +CollectAttribsUniforms::CollectAttribsUniforms(TVariableInfoList& attribs, + TVariableInfoList& uniforms) + : mAttribs(attribs), + mUniforms(uniforms) +{ +} + +// We are only interested in attribute and uniform variable declaration. +void CollectAttribsUniforms::visitSymbol(TIntermSymbol*) +{ +} + +void CollectAttribsUniforms::visitConstantUnion(TIntermConstantUnion*) +{ +} + +bool CollectAttribsUniforms::visitBinary(Visit, TIntermBinary*) +{ + return false; +} + +bool CollectAttribsUniforms::visitUnary(Visit, TIntermUnary*) +{ + return false; +} + +bool CollectAttribsUniforms::visitSelection(Visit, TIntermSelection*) +{ + return false; +} + +bool CollectAttribsUniforms::visitAggregate(Visit, TIntermAggregate* node) +{ + bool visitChildren = false; + + switch (node->getOp()) + { + case EOpSequence: + // We need to visit sequence children to get to variable declarations. + visitChildren = true; + break; + case EOpDeclaration: { + const TIntermSequence& sequence = node->getSequence(); + TQualifier qualifier = sequence.front()->getAsTyped()->getQualifier(); + if (qualifier == EvqAttribute || qualifier == EvqUniform) + { + TVariableInfoList& infoList = qualifier == EvqAttribute ? + mAttribs : mUniforms; + for (TIntermSequence::const_iterator i = sequence.begin(); + i != sequence.end(); ++i) + { + const TIntermSymbol* variable = (*i)->getAsSymbolNode(); + // The only case in which the sequence will not contain a + // TIntermSymbol node is initialization. It will contain a + // TInterBinary node in that case. Since attributes and unifroms + // cannot be initialized in a shader, we must have only + // TIntermSymbol nodes in the sequence. + ASSERT(variable != NULL); + getVariableInfo(variable->getType(), + variable->getOriginalSymbol(), + variable->getSymbol(), + infoList); + } + } + break; + } + default: break; + } + + return visitChildren; +} + +bool CollectAttribsUniforms::visitLoop(Visit, TIntermLoop*) +{ + return false; +} + +bool CollectAttribsUniforms::visitBranch(Visit, TIntermBranch*) +{ + return false; +} + |