| // Copyright 2016 The SwiftShader Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "OutputASM.h" |
| #include "Common/Math.hpp" |
| |
| #include "common/debug.h" |
| #include "InfoSink.h" |
| |
| #include "libGLESv2/Shader.h" |
| |
| #include <GLES2/gl2.h> |
| #include <GLES2/gl2ext.h> |
| #include <GLES3/gl3.h> |
| #include <GL/glcorearb.h> |
| #include <GL/glext.h> |
| |
| #include <stdlib.h> |
| |
| namespace |
| { |
| GLenum glVariableType(const TType &type) |
| { |
| switch(type.getBasicType()) |
| { |
| case EbtFloat: |
| if(type.isScalar()) |
| { |
| return GL_FLOAT; |
| } |
| else if(type.isVector()) |
| { |
| switch(type.getNominalSize()) |
| { |
| case 2: return GL_FLOAT_VEC2; |
| case 3: return GL_FLOAT_VEC3; |
| case 4: return GL_FLOAT_VEC4; |
| default: UNREACHABLE(type.getNominalSize()); |
| } |
| } |
| else if(type.isMatrix()) |
| { |
| switch(type.getNominalSize()) |
| { |
| case 2: |
| switch(type.getSecondarySize()) |
| { |
| case 2: return GL_FLOAT_MAT2; |
| case 3: return GL_FLOAT_MAT2x3; |
| case 4: return GL_FLOAT_MAT2x4; |
| default: UNREACHABLE(type.getSecondarySize()); |
| } |
| case 3: |
| switch(type.getSecondarySize()) |
| { |
| case 2: return GL_FLOAT_MAT3x2; |
| case 3: return GL_FLOAT_MAT3; |
| case 4: return GL_FLOAT_MAT3x4; |
| default: UNREACHABLE(type.getSecondarySize()); |
| } |
| case 4: |
| switch(type.getSecondarySize()) |
| { |
| case 2: return GL_FLOAT_MAT4x2; |
| case 3: return GL_FLOAT_MAT4x3; |
| case 4: return GL_FLOAT_MAT4; |
| default: UNREACHABLE(type.getSecondarySize()); |
| } |
| default: UNREACHABLE(type.getNominalSize()); |
| } |
| } |
| else UNREACHABLE(0); |
| break; |
| case EbtInt: |
| if(type.isScalar()) |
| { |
| return GL_INT; |
| } |
| else if(type.isVector()) |
| { |
| switch(type.getNominalSize()) |
| { |
| case 2: return GL_INT_VEC2; |
| case 3: return GL_INT_VEC3; |
| case 4: return GL_INT_VEC4; |
| default: UNREACHABLE(type.getNominalSize()); |
| } |
| } |
| else UNREACHABLE(0); |
| break; |
| case EbtUInt: |
| if(type.isScalar()) |
| { |
| return GL_UNSIGNED_INT; |
| } |
| else if(type.isVector()) |
| { |
| switch(type.getNominalSize()) |
| { |
| case 2: return GL_UNSIGNED_INT_VEC2; |
| case 3: return GL_UNSIGNED_INT_VEC3; |
| case 4: return GL_UNSIGNED_INT_VEC4; |
| default: UNREACHABLE(type.getNominalSize()); |
| } |
| } |
| else UNREACHABLE(0); |
| break; |
| case EbtBool: |
| if(type.isScalar()) |
| { |
| return GL_BOOL; |
| } |
| else if(type.isVector()) |
| { |
| switch(type.getNominalSize()) |
| { |
| case 2: return GL_BOOL_VEC2; |
| case 3: return GL_BOOL_VEC3; |
| case 4: return GL_BOOL_VEC4; |
| default: UNREACHABLE(type.getNominalSize()); |
| } |
| } |
| else UNREACHABLE(0); |
| break; |
| case EbtSampler2D: |
| return GL_SAMPLER_2D; |
| case EbtISampler2D: |
| return GL_INT_SAMPLER_2D; |
| case EbtUSampler2D: |
| return GL_UNSIGNED_INT_SAMPLER_2D; |
| case EbtSamplerCube: |
| return GL_SAMPLER_CUBE; |
| case EbtSampler2DRect: |
| return GL_SAMPLER_2D_RECT_ARB; |
| case EbtISamplerCube: |
| return GL_INT_SAMPLER_CUBE; |
| case EbtUSamplerCube: |
| return GL_UNSIGNED_INT_SAMPLER_CUBE; |
| case EbtSamplerExternalOES: |
| return GL_SAMPLER_EXTERNAL_OES; |
| case EbtSampler3D: |
| return GL_SAMPLER_3D_OES; |
| case EbtISampler3D: |
| return GL_INT_SAMPLER_3D; |
| case EbtUSampler3D: |
| return GL_UNSIGNED_INT_SAMPLER_3D; |
| case EbtSampler2DArray: |
| return GL_SAMPLER_2D_ARRAY; |
| case EbtISampler2DArray: |
| return GL_INT_SAMPLER_2D_ARRAY; |
| case EbtUSampler2DArray: |
| return GL_UNSIGNED_INT_SAMPLER_2D_ARRAY; |
| case EbtSampler2DShadow: |
| return GL_SAMPLER_2D_SHADOW; |
| case EbtSamplerCubeShadow: |
| return GL_SAMPLER_CUBE_SHADOW; |
| case EbtSampler2DArrayShadow: |
| return GL_SAMPLER_2D_ARRAY_SHADOW; |
| default: |
| UNREACHABLE(type.getBasicType()); |
| break; |
| } |
| |
| return GL_NONE; |
| } |
| |
| GLenum glVariablePrecision(const TType &type) |
| { |
| if(type.getBasicType() == EbtFloat) |
| { |
| switch(type.getPrecision()) |
| { |
| case EbpHigh: return GL_HIGH_FLOAT; |
| case EbpMedium: return GL_MEDIUM_FLOAT; |
| case EbpLow: return GL_LOW_FLOAT; |
| case EbpUndefined: |
| // Should be defined as the default precision by the parser |
| default: UNREACHABLE(type.getPrecision()); |
| } |
| } |
| else if(type.getBasicType() == EbtInt) |
| { |
| switch(type.getPrecision()) |
| { |
| case EbpHigh: return GL_HIGH_INT; |
| case EbpMedium: return GL_MEDIUM_INT; |
| case EbpLow: return GL_LOW_INT; |
| case EbpUndefined: |
| // Should be defined as the default precision by the parser |
| default: UNREACHABLE(type.getPrecision()); |
| } |
| } |
| |
| // Other types (boolean, sampler) don't have a precision |
| return GL_NONE; |
| } |
| } |
| |
| namespace glsl |
| { |
| // Integer to TString conversion |
| TString str(int i) |
| { |
| char buffer[20]; |
| sprintf(buffer, "%d", i); |
| return buffer; |
| } |
| |
| class Temporary : public TIntermSymbol |
| { |
| public: |
| Temporary(OutputASM *assembler) : TIntermSymbol(TSymbolTableLevel::nextUniqueId(), "tmp", TType(EbtFloat, EbpHigh, EvqTemporary, 4, 1, false)), assembler(assembler) |
| { |
| } |
| |
| ~Temporary() |
| { |
| assembler->freeTemporary(this); |
| } |
| |
| private: |
| OutputASM *const assembler; |
| }; |
| |
| class Constant : public TIntermConstantUnion |
| { |
| public: |
| Constant(float x, float y, float z, float w) : TIntermConstantUnion(constants, TType(EbtFloat, EbpHigh, EvqConstExpr, 4, 1, false)) |
| { |
| constants[0].setFConst(x); |
| constants[1].setFConst(y); |
| constants[2].setFConst(z); |
| constants[3].setFConst(w); |
| } |
| |
| Constant(bool b) : TIntermConstantUnion(constants, TType(EbtBool, EbpHigh, EvqConstExpr, 1, 1, false)) |
| { |
| constants[0].setBConst(b); |
| } |
| |
| Constant(int i) : TIntermConstantUnion(constants, TType(EbtInt, EbpHigh, EvqConstExpr, 1, 1, false)) |
| { |
| constants[0].setIConst(i); |
| } |
| |
| ~Constant() |
| { |
| } |
| |
| private: |
| ConstantUnion constants[4]; |
| }; |
| |
| ShaderVariable::ShaderVariable(const TType& type, const std::string& name, int registerIndex) : |
| type(type.isStruct() ? GL_NONE : glVariableType(type)), precision(glVariablePrecision(type)), |
| name(name), arraySize(type.getArraySize()), registerIndex(registerIndex) |
| { |
| if(type.isStruct()) |
| { |
| for(const auto& field : type.getStruct()->fields()) |
| { |
| fields.push_back(ShaderVariable(*(field->type()), field->name().c_str(), -1)); |
| } |
| } |
| } |
| |
| Uniform::Uniform(const TType& type, const std::string &name, int registerIndex, int blockId, const BlockMemberInfo& blockMemberInfo) : |
| ShaderVariable(type, name, registerIndex), blockId(blockId), blockInfo(blockMemberInfo) |
| { |
| } |
| |
| UniformBlock::UniformBlock(const std::string& name, unsigned int dataSize, unsigned int arraySize, |
| TLayoutBlockStorage layout, bool isRowMajorLayout, int registerIndex, int blockId) : |
| name(name), dataSize(dataSize), arraySize(arraySize), layout(layout), |
| isRowMajorLayout(isRowMajorLayout), registerIndex(registerIndex), blockId(blockId) |
| { |
| } |
| |
| BlockLayoutEncoder::BlockLayoutEncoder() |
| : mCurrentOffset(0) |
| { |
| } |
| |
| BlockMemberInfo BlockLayoutEncoder::encodeType(const TType &type) |
| { |
| int arrayStride; |
| int matrixStride; |
| |
| bool isRowMajor = type.getLayoutQualifier().matrixPacking == EmpRowMajor; |
| getBlockLayoutInfo(type, type.getArraySize(), isRowMajor, &arrayStride, &matrixStride); |
| |
| const BlockMemberInfo memberInfo(static_cast<int>(mCurrentOffset * BytesPerComponent), |
| static_cast<int>(arrayStride * BytesPerComponent), |
| static_cast<int>(matrixStride * BytesPerComponent), |
| (matrixStride > 0) && isRowMajor); |
| |
| advanceOffset(type, type.getArraySize(), isRowMajor, arrayStride, matrixStride); |
| |
| return memberInfo; |
| } |
| |
| // static |
| size_t BlockLayoutEncoder::getBlockRegister(const BlockMemberInfo &info) |
| { |
| return (info.offset / BytesPerComponent) / ComponentsPerRegister; |
| } |
| |
| // static |
| size_t BlockLayoutEncoder::getBlockRegisterElement(const BlockMemberInfo &info) |
| { |
| return (info.offset / BytesPerComponent) % ComponentsPerRegister; |
| } |
| |
| void BlockLayoutEncoder::nextRegister() |
| { |
| mCurrentOffset = sw::align(mCurrentOffset, ComponentsPerRegister); |
| } |
| |
| Std140BlockEncoder::Std140BlockEncoder() : BlockLayoutEncoder() |
| { |
| } |
| |
| void Std140BlockEncoder::enterAggregateType() |
| { |
| nextRegister(); |
| } |
| |
| void Std140BlockEncoder::exitAggregateType() |
| { |
| nextRegister(); |
| } |
| |
| void Std140BlockEncoder::getBlockLayoutInfo(const TType &type, unsigned int arraySize, bool isRowMajorMatrix, int *arrayStrideOut, int *matrixStrideOut) |
| { |
| size_t baseAlignment = 0; |
| int matrixStride = 0; |
| int arrayStride = 0; |
| |
| if(type.isMatrix()) |
| { |
| baseAlignment = ComponentsPerRegister; |
| matrixStride = ComponentsPerRegister; |
| |
| if(arraySize > 0) |
| { |
| const int numRegisters = isRowMajorMatrix ? type.getSecondarySize() : type.getNominalSize(); |
| arrayStride = ComponentsPerRegister * numRegisters; |
| } |
| } |
| else if(arraySize > 0) |
| { |
| baseAlignment = ComponentsPerRegister; |
| arrayStride = ComponentsPerRegister; |
| } |
| else |
| { |
| const size_t numComponents = type.getElementSize(); |
| baseAlignment = (numComponents == 3 ? 4u : numComponents); |
| } |
| |
| mCurrentOffset = sw::align(mCurrentOffset, baseAlignment); |
| |
| *matrixStrideOut = matrixStride; |
| *arrayStrideOut = arrayStride; |
| } |
| |
| void Std140BlockEncoder::advanceOffset(const TType &type, unsigned int arraySize, bool isRowMajorMatrix, int arrayStride, int matrixStride) |
| { |
| if(arraySize > 0) |
| { |
| mCurrentOffset += arrayStride * arraySize; |
| } |
| else if(type.isMatrix()) |
| { |
| ASSERT(matrixStride == ComponentsPerRegister); |
| const int numRegisters = isRowMajorMatrix ? type.getSecondarySize() : type.getNominalSize(); |
| mCurrentOffset += ComponentsPerRegister * numRegisters; |
| } |
| else |
| { |
| mCurrentOffset += type.getElementSize(); |
| } |
| } |
| |
| Attribute::Attribute() |
| { |
| type = GL_NONE; |
| arraySize = 0; |
| registerIndex = 0; |
| } |
| |
| Attribute::Attribute(GLenum type, const std::string &name, int arraySize, int layoutLocation, int registerIndex) |
| { |
| this->type = type; |
| this->name = name; |
| this->arraySize = arraySize; |
| this->layoutLocation = layoutLocation; |
| this->registerIndex = registerIndex; |
| } |
| |
| sw::PixelShader *Shader::getPixelShader() const |
| { |
| return nullptr; |
| } |
| |
| sw::VertexShader *Shader::getVertexShader() const |
| { |
| return nullptr; |
| } |
| |
| OutputASM::TextureFunction::TextureFunction(const TString& nodeName) : method(IMPLICIT), proj(false), offset(false) |
| { |
| TString name = TFunction::unmangleName(nodeName); |
| |
| if(name == "texture2D" || name == "textureCube" || name == "texture" || name == "texture3D" || name == "texture2DRect") |
| { |
| method = IMPLICIT; |
| } |
| else if(name == "texture2DProj" || name == "textureProj" || name == "texture2DRectProj") |
| { |
| method = IMPLICIT; |
| proj = true; |
| } |
| else if(name == "texture2DLod" || name == "textureCubeLod" || name == "textureLod") |
| { |
| method = LOD; |
| } |
| else if(name == "texture2DProjLod" || name == "textureProjLod") |
| { |
| method = LOD; |
| proj = true; |
| } |
| else if(name == "textureSize") |
| { |
| method = SIZE; |
| } |
| else if(name == "textureOffset") |
| { |
| method = IMPLICIT; |
| offset = true; |
| } |
| else if(name == "textureProjOffset") |
| { |
| method = IMPLICIT; |
| offset = true; |
| proj = true; |
| } |
| else if(name == "textureLodOffset") |
| { |
| method = LOD; |
| offset = true; |
| } |
| else if(name == "textureProjLodOffset") |
| { |
| method = LOD; |
| proj = true; |
| offset = true; |
| } |
| else if(name == "texelFetch") |
| { |
| method = FETCH; |
| } |
| else if(name == "texelFetchOffset") |
| { |
| method = FETCH; |
| offset = true; |
| } |
| else if(name == "textureGrad") |
| { |
| method = GRAD; |
| } |
| else if(name == "textureGradOffset") |
| { |
| method = GRAD; |
| offset = true; |
| } |
| else if(name == "textureProjGrad") |
| { |
| method = GRAD; |
| proj = true; |
| } |
| else if(name == "textureProjGradOffset") |
| { |
| method = GRAD; |
| proj = true; |
| offset = true; |
| } |
| else UNREACHABLE(0); |
| } |
| |
| OutputASM::OutputASM(TParseContext &context, Shader *shaderObject) : TIntermTraverser(true, true, true), shaderObject(shaderObject), mContext(context) |
| { |
| shader = nullptr; |
| pixelShader = nullptr; |
| vertexShader = nullptr; |
| |
| if(shaderObject) |
| { |
| shader = shaderObject->getShader(); |
| pixelShader = shaderObject->getPixelShader(); |
| vertexShader = shaderObject->getVertexShader(); |
| } |
| |
| functionArray.push_back(Function(0, "main(", nullptr, nullptr)); |
| currentFunction = 0; |
| outputQualifier = EvqOutput; // Initialize outputQualifier to any value other than EvqFragColor or EvqFragData |
| } |
| |
| OutputASM::~OutputASM() |
| { |
| } |
| |
| void OutputASM::output() |
| { |
| if(shader) |
| { |
| emitShader(GLOBAL); |
| |
| if(functionArray.size() > 1) // Only call main() when there are other functions |
| { |
| Instruction *callMain = emit(sw::Shader::OPCODE_CALL); |
| callMain->dst.type = sw::Shader::PARAMETER_LABEL; |
| callMain->dst.index = 0; // main() |
| |
| emit(sw::Shader::OPCODE_RET); |
| } |
| |
| emitShader(FUNCTION); |
| } |
| } |
| |
| void OutputASM::emitShader(Scope scope) |
| { |
| emitScope = scope; |
| currentScope = GLOBAL; |
| mContext.getTreeRoot()->traverse(this); |
| } |
| |
| void OutputASM::freeTemporary(Temporary *temporary) |
| { |
| free(temporaries, temporary); |
| } |
| |
| sw::Shader::Opcode OutputASM::getOpcode(sw::Shader::Opcode op, TIntermTyped *in) const |
| { |
| TBasicType baseType = in->getType().getBasicType(); |
| |
| switch(op) |
| { |
| case sw::Shader::OPCODE_NEG: |
| switch(baseType) |
| { |
| case EbtInt: |
| case EbtUInt: |
| return sw::Shader::OPCODE_INEG; |
| case EbtFloat: |
| default: |
| return op; |
| } |
| case sw::Shader::OPCODE_ABS: |
| switch(baseType) |
| { |
| case EbtInt: |
| return sw::Shader::OPCODE_IABS; |
| case EbtFloat: |
| default: |
| return op; |
| } |
| case sw::Shader::OPCODE_SGN: |
| switch(baseType) |
| { |
| case EbtInt: |
| return sw::Shader::OPCODE_ISGN; |
| case EbtFloat: |
| default: |
| return op; |
| } |
| case sw::Shader::OPCODE_ADD: |
| switch(baseType) |
| { |
| case EbtInt: |
| case EbtUInt: |
| return sw::Shader::OPCODE_IADD; |
| case EbtFloat: |
| default: |
| return op; |
| } |
| case sw::Shader::OPCODE_SUB: |
| switch(baseType) |
| { |
| case EbtInt: |
| case EbtUInt: |
| return sw::Shader::OPCODE_ISUB; |
| case EbtFloat: |
| default: |
| return op; |
| } |
| case sw::Shader::OPCODE_MUL: |
| switch(baseType) |
| { |
| case EbtInt: |
| case EbtUInt: |
| return sw::Shader::OPCODE_IMUL; |
| case EbtFloat: |
| default: |
| return op; |
| } |
| case sw::Shader::OPCODE_DIV: |
| switch(baseType) |
| { |
| case EbtInt: |
| return sw::Shader::OPCODE_IDIV; |
| case EbtUInt: |
| return sw::Shader::OPCODE_UDIV; |
| case EbtFloat: |
| default: |
| return op; |
| } |
| case sw::Shader::OPCODE_IMOD: |
| return baseType == EbtUInt ? sw::Shader::OPCODE_UMOD : op; |
| case sw::Shader::OPCODE_ISHR: |
| return baseType == EbtUInt ? sw::Shader::OPCODE_USHR : op; |
| case sw::Shader::OPCODE_MIN: |
| switch(baseType) |
| { |
| case EbtInt: |
| return sw::Shader::OPCODE_IMIN; |
| case EbtUInt: |
| return sw::Shader::OPCODE_UMIN; |
| case EbtFloat: |
| default: |
| return op; |
| } |
| case sw::Shader::OPCODE_MAX: |
| switch(baseType) |
| { |
| case EbtInt: |
| return sw::Shader::OPCODE_IMAX; |
| case EbtUInt: |
| return sw::Shader::OPCODE_UMAX; |
| case EbtFloat: |
| default: |
| return op; |
| } |
| default: |
| return op; |
| } |
| } |
| |
| void OutputASM::visitSymbol(TIntermSymbol *symbol) |
| { |
| // The type of vertex outputs and fragment inputs with the same name must match (validated at link time), |
| // so declare them but don't assign a register index yet (one will be assigned when referenced in reachable code). |
| switch(symbol->getQualifier()) |
| { |
| case EvqVaryingIn: |
| case EvqVaryingOut: |
| case EvqInvariantVaryingIn: |
| case EvqInvariantVaryingOut: |
| case EvqVertexOut: |
| case EvqFragmentIn: |
| if(symbol->getBasicType() != EbtInvariant) // Typeless declarations are not new varyings |
| { |
| declareVarying(symbol, -1); |
| } |
| break; |
| case EvqFragmentOut: |
| declareFragmentOutput(symbol); |
| break; |
| default: |
| break; |
| } |
| |
| TInterfaceBlock* block = symbol->getType().getInterfaceBlock(); |
| // OpenGL ES 3.0.4 spec, section 2.12.6 Uniform Variables: |
| // "All members of a named uniform block declared with a shared or std140 layout qualifier |
| // are considered active, even if they are not referenced in any shader in the program. |
| // The uniform block itself is also considered active, even if no member of the block is referenced." |
| if(block && ((block->blockStorage() == EbsShared) || (block->blockStorage() == EbsStd140))) |
| { |
| uniformRegister(symbol); |
| } |
| } |
| |
| bool OutputASM::visitBinary(Visit visit, TIntermBinary *node) |
| { |
| if(currentScope != emitScope) |
| { |
| return false; |
| } |
| |
| TIntermTyped *result = node; |
| TIntermTyped *left = node->getLeft(); |
| TIntermTyped *right = node->getRight(); |
| const TType &leftType = left->getType(); |
| const TType &rightType = right->getType(); |
| |
| if(isSamplerRegister(result)) |
| { |
| return false; // Don't traverse, the register index is determined statically |
| } |
| |
| switch(node->getOp()) |
| { |
| case EOpAssign: |
| assert(visit == PreVisit); |
| right->traverse(this); |
| assignLvalue(left, right); |
| copy(result, right); |
| return false; |
| case EOpInitialize: |
| assert(visit == PreVisit); |
| // Constant arrays go into the constant register file. |
| if(leftType.getQualifier() == EvqConstExpr && leftType.isArray() && leftType.getArraySize() > 1) |
| { |
| for(int i = 0; i < left->totalRegisterCount(); i++) |
| { |
| emit(sw::Shader::OPCODE_DEF, left, i, right, i); |
| } |
| } |
| else |
| { |
| right->traverse(this); |
| copy(left, right); |
| } |
| return false; |
| case EOpMatrixTimesScalarAssign: |
| assert(visit == PreVisit); |
| right->traverse(this); |
| for(int i = 0; i < leftType.getNominalSize(); i++) |
| { |
| emit(sw::Shader::OPCODE_MUL, result, i, left, i, right); |
| } |
| |
| assignLvalue(left, result); |
| return false; |
| case EOpVectorTimesMatrixAssign: |
| assert(visit == PreVisit); |
| { |
| // The left operand may contain a swizzle serving double-duty as |
| // swizzle and writemask, so it's important that we traverse it |
| // first. Otherwise we may end up never setting up our left |
| // operand correctly. |
| left->traverse(this); |
| right->traverse(this); |
| int size = leftType.getNominalSize(); |
| |
| for(int i = 0; i < size; i++) |
| { |
| Instruction *dot = emit(sw::Shader::OPCODE_DP(size), result, 0, left, 0, right, i); |
| dot->dst.mask = 1 << i; |
| } |
| |
| assignLvalue(left, result); |
| } |
| return false; |
| case EOpMatrixTimesMatrixAssign: |
| assert(visit == PreVisit); |
| { |
| right->traverse(this); |
| int dim = leftType.getNominalSize(); |
| |
| for(int i = 0; i < dim; i++) |
| { |
| Instruction *mul = emit(sw::Shader::OPCODE_MUL, result, i, left, 0, right, i); |
| mul->src[1].swizzle = 0x00; |
| |
| for(int j = 1; j < dim; j++) |
| { |
| Instruction *mad = emit(sw::Shader::OPCODE_MAD, result, i, left, j, right, i, result, i); |
| mad->src[1].swizzle = j * 0x55; |
| } |
| } |
| |
| assignLvalue(left, result); |
| } |
| return false; |
| case EOpIndexDirect: |
| case EOpIndexIndirect: |
| case EOpIndexDirectStruct: |
| case EOpIndexDirectInterfaceBlock: |
| assert(visit == PreVisit); |
| evaluateRvalue(node); |
| return false; |
| case EOpVectorSwizzle: |
| if(visit == PostVisit) |
| { |
| int swizzle = 0; |
| TIntermAggregate *components = right->getAsAggregate(); |
| |
| if(components) |
| { |
| TIntermSequence &sequence = components->getSequence(); |
| int component = 0; |
| |
| for(TIntermSequence::iterator sit = sequence.begin(); sit != sequence.end(); sit++) |
| { |
| TIntermConstantUnion *element = (*sit)->getAsConstantUnion(); |
| |
| if(element) |
| { |
| int i = element->getUnionArrayPointer()[0].getIConst(); |
| swizzle |= i << (component * 2); |
| component++; |
| } |
| else UNREACHABLE(0); |
| } |
| } |
| else UNREACHABLE(0); |
| |
| Instruction *mov = emit(sw::Shader::OPCODE_MOV, result, left); |
| mov->src[0].swizzle = swizzle; |
| } |
| break; |
| case EOpAddAssign: if(visit == PostVisit) emitAssign(getOpcode(sw::Shader::OPCODE_ADD, result), result, left, left, right); break; |
| case EOpAdd: if(visit == PostVisit) emitBinary(getOpcode(sw::Shader::OPCODE_ADD, result), result, left, right); break; |
| case EOpSubAssign: if(visit == PostVisit) emitAssign(getOpcode(sw::Shader::OPCODE_SUB, result), result, left, left, right); break; |
| case EOpSub: if(visit == PostVisit) emitBinary(getOpcode(sw::Shader::OPCODE_SUB, result), result, left, right); break; |
| case EOpMulAssign: if(visit == PostVisit) emitAssign(getOpcode(sw::Shader::OPCODE_MUL, result), result, left, left, right); break; |
| case EOpMul: if(visit == PostVisit) emitBinary(getOpcode(sw::Shader::OPCODE_MUL, result), result, left, right); break; |
| case EOpDivAssign: if(visit == PostVisit) emitAssign(getOpcode(sw::Shader::OPCODE_DIV, result), result, left, left, right); break; |
| case EOpDiv: if(visit == PostVisit) emitBinary(getOpcode(sw::Shader::OPCODE_DIV, result), result, left, right); break; |
| case EOpIModAssign: if(visit == PostVisit) emitAssign(getOpcode(sw::Shader::OPCODE_IMOD, result), result, left, left, right); break; |
| case EOpIMod: if(visit == PostVisit) emitBinary(getOpcode(sw::Shader::OPCODE_IMOD, result), result, left, right); break; |
| case EOpBitShiftLeftAssign: if(visit == PostVisit) emitAssign(sw::Shader::OPCODE_SHL, result, left, left, right); break; |
| case EOpBitShiftLeft: if(visit == PostVisit) emitBinary(sw::Shader::OPCODE_SHL, result, left, right); break; |
| case EOpBitShiftRightAssign: if(visit == PostVisit) emitAssign(getOpcode(sw::Shader::OPCODE_ISHR, result), result, left, left, right); break; |
| case EOpBitShiftRight: if(visit == PostVisit) emitBinary(getOpcode(sw::Shader::OPCODE_ISHR, result), result, left, right); break; |
| case EOpBitwiseAndAssign: if(visit == PostVisit) emitAssign(sw::Shader::OPCODE_AND, result, left, left, right); break; |
| case EOpBitwiseAnd: if(visit == PostVisit) emitBinary(sw::Shader::OPCODE_AND, result, left, right); break; |
| case EOpBitwiseXorAssign: if(visit == PostVisit) emitAssign(sw::Shader::OPCODE_XOR, result, left, left, right); break; |
| case EOpBitwiseXor: if(visit == PostVisit) emitBinary(sw::Shader::OPCODE_XOR, result, left, right); break; |
| case EOpBitwiseOrAssign: if(visit == PostVisit) emitAssign(sw::Shader::OPCODE_OR, result, left, left, right); break; |
| case EOpBitwiseOr: if(visit == PostVisit) emitBinary(sw::Shader::OPCODE_OR, result, left, right); break; |
| case EOpEqual: |
| if(visit == PostVisit) |
| { |
| emitBinary(sw::Shader::OPCODE_EQ, result, left, right); |
| |
| for(int index = 1; index < left->totalRegisterCount(); index++) |
| { |
| Temporary equal(this); |
| emit(sw::Shader::OPCODE_EQ, &equal, 0, left, index, right, index); |
| emit(sw::Shader::OPCODE_AND, result, result, &equal); |
| } |
| } |
| break; |
| case EOpNotEqual: |
| if(visit == PostVisit) |
| { |
| emitBinary(sw::Shader::OPCODE_NE, result, left, right); |
| |
| for(int index = 1; index < left->totalRegisterCount(); index++) |
| { |
| Temporary notEqual(this); |
| emit(sw::Shader::OPCODE_NE, ¬Equal, 0, left, index, right, index); |
| emit(sw::Shader::OPCODE_OR, result, result, ¬Equal); |
| } |
| } |
| break; |
| case EOpLessThan: if(visit == PostVisit) emitCmp(sw::Shader::CONTROL_LT, result, left, right); break; |
| case EOpGreaterThan: if(visit == PostVisit) emitCmp(sw::Shader::CONTROL_GT, result, left, right); break; |
| case EOpLessThanEqual: if(visit == PostVisit) emitCmp(sw::Shader::CONTROL_LE, result, left, right); break; |
| case EOpGreaterThanEqual: if(visit == PostVisit) emitCmp(sw::Shader::CONTROL_GE, result, left, right); break; |
| case EOpVectorTimesScalarAssign: if(visit == PostVisit) emitAssign(getOpcode(sw::Shader::OPCODE_MUL, left), result, left, left, right); break; |
| case EOpVectorTimesScalar: if(visit == PostVisit) emit(getOpcode(sw::Shader::OPCODE_MUL, left), result, left, right); break; |
| case EOpMatrixTimesScalar: |
| if(visit == PostVisit) |
| { |
| if(left->isMatrix()) |
| { |
| for(int i = 0; i < leftType.getNominalSize(); i++) |
| { |
| emit(sw::Shader::OPCODE_MUL, result, i, left, i, right, 0); |
| } |
| } |
| else if(right->isMatrix()) |
| { |
| for(int i = 0; i < rightType.getNominalSize(); i++) |
| { |
| emit(sw::Shader::OPCODE_MUL, result, i, left, 0, right, i); |
| } |
| } |
| else UNREACHABLE(0); |
| } |
| break; |
| case EOpVectorTimesMatrix: |
| if(visit == PostVisit) |
| { |
| sw::Shader::Opcode dpOpcode = sw::Shader::OPCODE_DP(leftType.getNominalSize()); |
| |
| int size = rightType.getNominalSize(); |
| for(int i = 0; i < size; i++) |
| { |
| Instruction *dot = emit(dpOpcode, result, 0, left, 0, right, i); |
| dot->dst.mask = 1 << i; |
| } |
| } |
| break; |
| case EOpMatrixTimesVector: |
| if(visit == PostVisit) |
| { |
| Instruction *mul = emit(sw::Shader::OPCODE_MUL, result, left, right); |
| mul->src[1].swizzle = 0x00; |
| |
| int size = rightType.getNominalSize(); |
| for(int i = 1; i < size; i++) |
| { |
| Instruction *mad = emit(sw::Shader::OPCODE_MAD, result, 0, left, i, right, 0, result); |
| mad->src[1].swizzle = i * 0x55; |
| } |
| } |
| break; |
| case EOpMatrixTimesMatrix: |
| if(visit == PostVisit) |
| { |
| int dim = leftType.getNominalSize(); |
| |
| int size = rightType.getNominalSize(); |
| for(int i = 0; i < size; i++) |
| { |
| Instruction *mul = emit(sw::Shader::OPCODE_MUL, result, i, left, 0, right, i); |
| mul->src[1].swizzle = 0x00; |
| |
| for(int j = 1; j < dim; j++) |
| { |
| Instruction *mad = emit(sw::Shader::OPCODE_MAD, result, i, left, j, right, i, result, i); |
| mad->src[1].swizzle = j * 0x55; |
| } |
| } |
| } |
| break; |
| case EOpLogicalOr: |
| if(trivial(right, 6)) |
| { |
| if(visit == PostVisit) |
| { |
| emit(sw::Shader::OPCODE_OR, result, left, right); |
| } |
| } |
| else // Short-circuit evaluation |
| { |
| if(visit == InVisit) |
| { |
| emit(sw::Shader::OPCODE_MOV, result, left); |
| Instruction *ifnot = emit(sw::Shader::OPCODE_IF, 0, result); |
| ifnot->src[0].modifier = sw::Shader::MODIFIER_NOT; |
| } |
| else if(visit == PostVisit) |
| { |
| emit(sw::Shader::OPCODE_MOV, result, right); |
| emit(sw::Shader::OPCODE_ENDIF); |
| } |
| } |
| break; |
| case EOpLogicalXor: if(visit == PostVisit) emit(sw::Shader::OPCODE_XOR, result, left, right); break; |
| case EOpLogicalAnd: |
| if(trivial(right, 6)) |
| { |
| if(visit == PostVisit) |
| { |
| emit(sw::Shader::OPCODE_AND, result, left, right); |
| } |
| } |
| else // Short-circuit evaluation |
| { |
| if(visit == InVisit) |
| { |
| emit(sw::Shader::OPCODE_MOV, result, left); |
| emit(sw::Shader::OPCODE_IF, 0, result); |
| } |
| else if(visit == PostVisit) |
| { |
| emit(sw::Shader::OPCODE_MOV, result, right); |
| emit(sw::Shader::OPCODE_ENDIF); |
| } |
| } |
| break; |
| default: UNREACHABLE(node->getOp()); |
| } |
| |
| return true; |
| } |
| |
| void OutputASM::emitDeterminant(TIntermTyped *result, TIntermTyped *arg, int size, int col, int row, int outCol, int outRow) |
| { |
| switch(size) |
| { |
| case 1: // Used for cofactor computation only |
| { |
| // For a 2x2 matrix, the cofactor is simply a transposed move or negate |
| bool isMov = (row == col); |
| sw::Shader::Opcode op = isMov ? sw::Shader::OPCODE_MOV : sw::Shader::OPCODE_NEG; |
| Instruction *mov = emit(op, result, outCol, arg, isMov ? 1 - row : row); |
| mov->src[0].swizzle = 0x55 * (isMov ? 1 - col : col); |
| mov->dst.mask = 1 << outRow; |
| } |
| break; |
| case 2: |
| { |
| static const unsigned int swizzle[3] = { 0x99, 0x88, 0x44 }; // xy?? : yzyz, xzxz, xyxy |
| |
| bool isCofactor = (col >= 0) && (row >= 0); |
| int col0 = (isCofactor && (col <= 0)) ? 1 : 0; |
| int col1 = (isCofactor && (col <= 1)) ? 2 : 1; |
| bool negate = isCofactor && ((col & 0x01) ^ (row & 0x01)); |
| |
| Instruction *det = emit(sw::Shader::OPCODE_DET2, result, outCol, arg, negate ? col1 : col0, arg, negate ? col0 : col1); |
| det->src[0].swizzle = det->src[1].swizzle = swizzle[isCofactor ? row : 2]; |
| det->dst.mask = 1 << outRow; |
| } |
| break; |
| case 3: |
| { |
| static const unsigned int swizzle[4] = { 0xF9, 0xF8, 0xF4, 0xE4 }; // xyz? : yzww, xzww, xyww, xyzw |
| |
| bool isCofactor = (col >= 0) && (row >= 0); |
| int col0 = (isCofactor && (col <= 0)) ? 1 : 0; |
| int col1 = (isCofactor && (col <= 1)) ? 2 : 1; |
| int col2 = (isCofactor && (col <= 2)) ? 3 : 2; |
| bool negate = isCofactor && ((col & 0x01) ^ (row & 0x01)); |
| |
| Instruction *det = emit(sw::Shader::OPCODE_DET3, result, outCol, arg, col0, arg, negate ? col2 : col1, arg, negate ? col1 : col2); |
| det->src[0].swizzle = det->src[1].swizzle = det->src[2].swizzle = swizzle[isCofactor ? row : 3]; |
| det->dst.mask = 1 << outRow; |
| } |
| break; |
| case 4: |
| { |
| Instruction *det = emit(sw::Shader::OPCODE_DET4, result, outCol, arg, 0, arg, 1, arg, 2, arg, 3); |
| det->dst.mask = 1 << outRow; |
| } |
| break; |
| default: |
| UNREACHABLE(size); |
| break; |
| } |
| } |
| |
| bool OutputASM::visitUnary(Visit visit, TIntermUnary *node) |
| { |
| if(currentScope != emitScope) |
| { |
| return false; |
| } |
| |
| TIntermTyped *result = node; |
| TIntermTyped *arg = node->getOperand(); |
| TBasicType basicType = arg->getType().getBasicType(); |
| |
| union |
| { |
| float f; |
| int i; |
| } one_value; |
| |
| if(basicType == EbtInt || basicType == EbtUInt) |
| { |
| one_value.i = 1; |
| } |
| else |
| { |
| one_value.f = 1.0f; |
| } |
| |
| Constant one(one_value.f, one_value.f, one_value.f, one_value.f); |
| Constant rad(1.74532925e-2f, 1.74532925e-2f, 1.74532925e-2f, 1.74532925e-2f); |
| Constant deg(5.72957795e+1f, 5.72957795e+1f, 5.72957795e+1f, 5.72957795e+1f); |
| |
| switch(node->getOp()) |
| { |
| case EOpNegative: |
| if(visit == PostVisit) |
| { |
| sw::Shader::Opcode negOpcode = getOpcode(sw::Shader::OPCODE_NEG, arg); |
| for(int index = 0; index < arg->totalRegisterCount(); index++) |
| { |
| emit(negOpcode, result, index, arg, index); |
| } |
| } |
| break; |
| case EOpVectorLogicalNot: if(visit == PostVisit) emit(sw::Shader::OPCODE_NOT, result, arg); break; |
| case EOpLogicalNot: if(visit == PostVisit) emit(sw::Shader::OPCODE_NOT, result, arg); break; |
| case EOpBitwiseNot: if(visit == PostVisit) emit(sw::Shader::OPCODE_NOT, result, arg); break; |
| case EOpPostIncrement: |
| if(visit == PostVisit) |
| { |
| copy(result, arg); |
| |
| sw::Shader::Opcode addOpcode = getOpcode(sw::Shader::OPCODE_ADD, arg); |
| for(int index = 0; index < arg->totalRegisterCount(); index++) |
| { |
| emit(addOpcode, arg, index, arg, index, &one); |
| } |
| |
| assignLvalue(arg, arg); |
| } |
| break; |
| case EOpPostDecrement: |
| if(visit == PostVisit) |
| { |
| copy(result, arg); |
| |
| sw::Shader::Opcode subOpcode = getOpcode(sw::Shader::OPCODE_SUB, arg); |
| for(int index = 0; index < arg->totalRegisterCount(); index++) |
| { |
| emit(subOpcode, arg, index, arg, index, &one); |
| } |
| |
| assignLvalue(arg, arg); |
| } |
| break; |
| case EOpPreIncrement: |
| if(visit == PostVisit) |
| { |
| sw::Shader::Opcode addOpcode = getOpcode(sw::Shader::OPCODE_ADD, arg); |
| for(int index = 0; index < arg->totalRegisterCount(); index++) |
| { |
| emit(addOpcode, result, index, arg, index, &one); |
| } |
| |
| assignLvalue(arg, result); |
| } |
| break; |
| case EOpPreDecrement: |
| if(visit == PostVisit) |
| { |
| sw::Shader::Opcode subOpcode = getOpcode(sw::Shader::OPCODE_SUB, arg); |
| for(int index = 0; index < arg->totalRegisterCount(); index++) |
| { |
| emit(subOpcode, result, index, arg, index, &one); |
| } |
| |
| assignLvalue(arg, result); |
| } |
| break; |
| case EOpRadians: if(visit == PostVisit) emit(sw::Shader::OPCODE_MUL, result, arg, &rad); break; |
| case EOpDegrees: if(visit == PostVisit) emit(sw::Shader::OPCODE_MUL, result, arg, °); break; |
| case EOpSin: if(visit == PostVisit) emit(sw::Shader::OPCODE_SIN, result, arg); break; |
| case EOpCos: if(visit == PostVisit) emit(sw::Shader::OPCODE_COS, result, arg); break; |
| case EOpTan: if(visit == PostVisit) emit(sw::Shader::OPCODE_TAN, result, arg); break; |
| case EOpAsin: if(visit == PostVisit) emit(sw::Shader::OPCODE_ASIN, result, arg); break; |
| case EOpAcos: if(visit == PostVisit) emit(sw::Shader::OPCODE_ACOS, result, arg); break; |
| case EOpAtan: if(visit == PostVisit) emit(sw::Shader::OPCODE_ATAN, result, arg); break; |
| case EOpSinh: if(visit == PostVisit) emit(sw::Shader::OPCODE_SINH, result, arg); break; |
| case EOpCosh: if(visit == PostVisit) emit(sw::Shader::OPCODE_COSH, result, arg); break; |
| case EOpTanh: if(visit == PostVisit) emit(sw::Shader::OPCODE_TANH, result, arg); break; |
| case EOpAsinh: if(visit == PostVisit) emit(sw::Shader::OPCODE_ASINH, result, arg); break; |
| case EOpAcosh: if(visit == PostVisit) emit(sw::Shader::OPCODE_ACOSH, result, arg); break; |
| case EOpAtanh: if(visit == PostVisit) emit(sw::Shader::OPCODE_ATANH, result, arg); break; |
| case EOpExp: if(visit == PostVisit) emit(sw::Shader::OPCODE_EXP, result, arg); break; |
| case EOpLog: if(visit == PostVisit) emit(sw::Shader::OPCODE_LOG, result, arg); break; |
| case EOpExp2: if(visit == PostVisit) emit(sw::Shader::OPCODE_EXP2, result, arg); break; |
| case EOpLog2: if(visit == PostVisit) emit(sw::Shader::OPCODE_LOG2, result, arg); break; |
| case EOpSqrt: if(visit == PostVisit) emit(sw::Shader::OPCODE_SQRT, result, arg); break; |
| case EOpInverseSqrt: if(visit == PostVisit) emit(sw::Shader::OPCODE_RSQ, result, arg); break; |
| case EOpAbs: if(visit == PostVisit) emit(getOpcode(sw::Shader::OPCODE_ABS, result), result, arg); break; |
| case EOpSign: if(visit == PostVisit) emit(getOpcode(sw::Shader::OPCODE_SGN, result), result, arg); break; |
| case EOpFloor: if(visit == PostVisit) emit(sw::Shader::OPCODE_FLOOR, result, arg); break; |
| case EOpTrunc: if(visit == PostVisit) emit(sw::Shader::OPCODE_TRUNC, result, arg); break; |
| case EOpRound: if(visit == PostVisit) emit(sw::Shader::OPCODE_ROUND, result, arg); break; |
| case EOpRoundEven: if(visit == PostVisit) emit(sw::Shader::OPCODE_ROUNDEVEN, result, arg); break; |
| case EOpCeil: if(visit == PostVisit) emit(sw::Shader::OPCODE_CEIL, result, arg, result); break; |
| case EOpFract: if(visit == PostVisit) emit(sw::Shader::OPCODE_FRC, result, arg); break; |
| case EOpIsNan: if(visit == PostVisit) emit(sw::Shader::OPCODE_ISNAN, result, arg); break; |
| case EOpIsInf: if(visit == PostVisit) emit(sw::Shader::OPCODE_ISINF, result, arg); break; |
| case EOpLength: if(visit == PostVisit) emit(sw::Shader::OPCODE_LEN(dim(arg)), result, arg); break; |
| case EOpNormalize: if(visit == PostVisit) emit(sw::Shader::OPCODE_NRM(dim(arg)), result, arg); break; |
| case EOpDFdx: if(visit == PostVisit) emit(sw::Shader::OPCODE_DFDX, result, arg); break; |
| case EOpDFdy: if(visit == PostVisit) emit(sw::Shader::OPCODE_DFDY, result, arg); break; |
| case EOpFwidth: if(visit == PostVisit) emit(sw::Shader::OPCODE_FWIDTH, result, arg); break; |
| case EOpAny: if(visit == PostVisit) emit(sw::Shader::OPCODE_ANY, result, arg); break; |
| case EOpAll: if(visit == PostVisit) emit(sw::Shader::OPCODE_ALL, result, arg); break; |
| case EOpFloatBitsToInt: if(visit == PostVisit) emit(sw::Shader::OPCODE_FLOATBITSTOINT, result, arg); break; |
| case EOpFloatBitsToUint: if(visit == PostVisit) emit(sw::Shader::OPCODE_FLOATBITSTOUINT, result, arg); break; |
| case EOpIntBitsToFloat: if(visit == PostVisit) emit(sw::Shader::OPCODE_INTBITSTOFLOAT, result, arg); break; |
| case EOpUintBitsToFloat: if(visit == PostVisit) emit(sw::Shader::OPCODE_UINTBITSTOFLOAT, result, arg); break; |
| case EOpPackSnorm2x16: if(visit == PostVisit) emit(sw::Shader::OPCODE_PACKSNORM2x16, result, arg); break; |
| case EOpPackUnorm2x16: if(visit == PostVisit) emit(sw::Shader::OPCODE_PACKUNORM2x16, result, arg); break; |
| case EOpPackHalf2x16: if(visit == PostVisit) emit(sw::Shader::OPCODE_PACKHALF2x16, result, arg); break; |
| case EOpUnpackSnorm2x16: if(visit == PostVisit) emit(sw::Shader::OPCODE_UNPACKSNORM2x16, result, arg); break; |
| case EOpUnpackUnorm2x16: if(visit == PostVisit) emit(sw::Shader::OPCODE_UNPACKUNORM2x16, result, arg); break; |
| case EOpUnpackHalf2x16: if(visit == PostVisit) emit(sw::Shader::OPCODE_UNPACKHALF2x16, result, arg); break; |
| case EOpTranspose: |
| if(visit == PostVisit) |
| { |
| int numCols = arg->getNominalSize(); |
| int numRows = arg->getSecondarySize(); |
| for(int i = 0; i < numCols; ++i) |
| { |
| for(int j = 0; j < numRows; ++j) |
| { |
| Instruction *mov = emit(sw::Shader::OPCODE_MOV, result, j, arg, i); |
| mov->src[0].swizzle = 0x55 * j; |
| mov->dst.mask = 1 << i; |
| } |
| } |
| } |
| break; |
| case EOpDeterminant: |
| if(visit == PostVisit) |
| { |
| int size = arg->getNominalSize(); |
| ASSERT(size == arg->getSecondarySize()); |
| |
| emitDeterminant(result, arg, size); |
| } |
| break; |
| case EOpInverse: |
| if(visit == PostVisit) |
| { |
| int size = arg->getNominalSize(); |
| ASSERT(size == arg->getSecondarySize()); |
| |
| // Compute transposed matrix of cofactors |
| for(int i = 0; i < size; ++i) |
| { |
| for(int j = 0; j < size; ++j) |
| { |
| // For a 2x2 matrix, the cofactor is simply a transposed move or negate |
| // For a 3x3 or 4x4 matrix, the cofactor is a transposed determinant |
| emitDeterminant(result, arg, size - 1, j, i, i, j); |
| } |
| } |
| |
| // Compute 1 / determinant |
| Temporary invDet(this); |
| emitDeterminant(&invDet, arg, size); |
| Constant one(1.0f, 1.0f, 1.0f, 1.0f); |
| Instruction *div = emit(sw::Shader::OPCODE_DIV, &invDet, &one, &invDet); |
| div->src[1].swizzle = 0x00; // xxxx |
| |
| // Divide transposed matrix of cofactors by determinant |
| for(int i = 0; i < size; ++i) |
| { |
| emit(sw::Shader::OPCODE_MUL, result, i, result, i, &invDet); |
| } |
| } |
| break; |
| default: UNREACHABLE(node->getOp()); |
| } |
| |
| return true; |
| } |
| |
| bool OutputASM::visitAggregate(Visit visit, TIntermAggregate *node) |
| { |
| if(currentScope != emitScope && node->getOp() != EOpFunction && node->getOp() != EOpSequence) |
| { |
| return false; |
| } |
| |
| Constant zero(0.0f, 0.0f, 0.0f, 0.0f); |
| |
| TIntermTyped *result = node; |
| const TType &resultType = node->getType(); |
| TIntermSequence &arg = node->getSequence(); |
| int argumentCount = static_cast<int>(arg.size()); |
| |
| switch(node->getOp()) |
| { |
| case EOpSequence: break; |
| case EOpDeclaration: break; |
| case EOpInvariantDeclaration: break; |
| case EOpPrototype: break; |
| case EOpComma: |
| if(visit == PostVisit) |
| { |
| copy(result, arg[1]); |
| } |
| break; |
| case EOpFunction: |
| if(visit == PreVisit) |
| { |
| const TString &name = node->getName(); |
| |
| if(emitScope == FUNCTION) |
| { |
| if(functionArray.size() > 1) // No need for a label when there's only main() |
| { |
| Instruction *label = emit(sw::Shader::OPCODE_LABEL); |
| label->dst.type = sw::Shader::PARAMETER_LABEL; |
| |
| const Function *function = findFunction(name); |
| ASSERT(function); // Should have been added during global pass |
| label->dst.index = function->label; |
| currentFunction = function->label; |
| } |
| } |
| else if(emitScope == GLOBAL) |
| { |
| if(name != "main(") |
| { |
| TIntermSequence &arguments = node->getSequence()[0]->getAsAggregate()->getSequence(); |
| functionArray.push_back(Function(functionArray.size(), name, &arguments, node)); |
| } |
| } |
| else UNREACHABLE(emitScope); |
| |
| currentScope = FUNCTION; |
| } |
| else if(visit == PostVisit) |
| { |
| if(emitScope == FUNCTION) |
| { |
| if(functionArray.size() > 1) // No need to return when there's only main() |
| { |
| emit(sw::Shader::OPCODE_RET); |
| } |
| } |
| |
| currentScope = GLOBAL; |
| } |
| break; |
| case EOpFunctionCall: |
| if(visit == PostVisit) |
| { |
| if(node->isUserDefined()) |
| { |
| const TString &name = node->getName(); |
| const Function *function = findFunction(name); |
| |
| if(!function) |
| { |
| mContext.error(node->getLine(), "function definition not found", name.c_str()); |
| return false; |
| } |
| |
| TIntermSequence &arguments = *function->arg; |
| |
| for(int i = 0; i < argumentCount; i++) |
| { |
| TIntermTyped *in = arguments[i]->getAsTyped(); |
| |
| if(in->getQualifier() == EvqIn || |
| in->getQualifier() == EvqInOut || |
| in->getQualifier() == EvqConstReadOnly) |
| { |
| copy(in, arg[i]); |
| } |
| } |
| |
| Instruction *call = emit(sw::Shader::OPCODE_CALL); |
| call->dst.type = sw::Shader::PARAMETER_LABEL; |
| call->dst.index = function->label; |
| |
| if(function->ret && function->ret->getType().getBasicType() != EbtVoid) |
| { |
| copy(result, function->ret); |
| } |
| |
| for(int i = 0; i < argumentCount; i++) |
| { |
| TIntermTyped *argument = arguments[i]->getAsTyped(); |
| TIntermTyped *out = arg[i]->getAsTyped(); |
| |
| if(argument->getQualifier() == EvqOut || |
| argument->getQualifier() == EvqInOut) |
| { |
| assignLvalue(out, argument); |
| } |
| } |
| } |
| else |
| { |
| const TextureFunction textureFunction(node->getName()); |
| TIntermTyped *s = arg[0]->getAsTyped(); |
| TIntermTyped *t = arg[1]->getAsTyped(); |
| |
| Temporary coord(this); |
| |
| if(textureFunction.proj) |
| { |
| Instruction *rcp = emit(sw::Shader::OPCODE_RCPX, &coord, arg[1]); |
| rcp->src[0].swizzle = 0x55 * (t->getNominalSize() - 1); |
| rcp->dst.mask = 0x7; |
| |
| Instruction *mul = emit(sw::Shader::OPCODE_MUL, &coord, arg[1], &coord); |
| mul->dst.mask = 0x7; |
| |
| if(IsShadowSampler(s->getBasicType())) |
| { |
| ASSERT(s->getBasicType() == EbtSampler2DShadow); |
| Instruction *mov = emit(sw::Shader::OPCODE_MOV, &coord, &coord); |
| mov->src[0].swizzle = 0xA4; |
| } |
| } |
| else |
| { |
| Instruction *mov = emit(sw::Shader::OPCODE_MOV, &coord, arg[1]); |
| |
| if(IsShadowSampler(s->getBasicType()) && t->getNominalSize() == 3) |
| { |
| ASSERT(s->getBasicType() == EbtSampler2DShadow); |
| mov->src[0].swizzle = 0xA4; |
| } |
| } |
| |
| switch(textureFunction.method) |
| { |
| case TextureFunction::IMPLICIT: |
| if(!textureFunction.offset) |
| { |
| if(argumentCount == 2) |
| { |
| emit(sw::Shader::OPCODE_TEX, result, &coord, s); |
| } |
| else if(argumentCount == 3) // Bias |
| { |
| emit(sw::Shader::OPCODE_TEXBIAS, result, &coord, s, arg[2]); |
| } |
| else UNREACHABLE(argumentCount); |
| } |
| else // Offset |
| { |
| if(argumentCount == 3) |
| { |
| emit(sw::Shader::OPCODE_TEXOFFSET, result, &coord, s, arg[2]); |
| } |
| else if(argumentCount == 4) // Bias |
| { |
| emit(sw::Shader::OPCODE_TEXOFFSETBIAS, result, &coord, s, arg[2], arg[3]); |
| } |
| else UNREACHABLE(argumentCount); |
| } |
| break; |
| case TextureFunction::LOD: |
| if(!textureFunction.offset && argumentCount == 3) |
| { |
| emit(sw::Shader::OPCODE_TEXLOD, result, &coord, s, arg[2]); |
| } |
| else if(argumentCount == 4) // Offset |
| { |
| emit(sw::Shader::OPCODE_TEXLODOFFSET, result, &coord, s, arg[3], arg[2]); |
| } |
| else UNREACHABLE(argumentCount); |
| break; |
| case TextureFunction::FETCH: |
| if(!textureFunction.offset && argumentCount == 3) |
| { |
| emit(sw::Shader::OPCODE_TEXELFETCH, result, &coord, s, arg[2]); |
| } |
| else if(argumentCount == 4) // Offset |
| { |
| emit(sw::Shader::OPCODE_TEXELFETCHOFFSET, result, &coord, s, arg[3], arg[2]); |
| } |
| else UNREACHABLE(argumentCount); |
| break; |
| case TextureFunction::GRAD: |
| if(!textureFunction.offset && argumentCount == 4) |
| { |
| emit(sw::Shader::OPCODE_TEXGRAD, result, &coord, s, arg[2], arg[3]); |
| } |
| else if(argumentCount == 5) // Offset |
| { |
| emit(sw::Shader::OPCODE_TEXGRADOFFSET, result, &coord, s, arg[2], arg[3], arg[4]); |
| } |
| else UNREACHABLE(argumentCount); |
| break; |
| case TextureFunction::SIZE: |
| emit(sw::Shader::OPCODE_TEXSIZE, result, arg[1], s); |
| break; |
| default: |
| UNREACHABLE(textureFunction.method); |
| } |
| } |
| } |
| break; |
| case EOpParameters: |
| break; |
| case EOpConstructFloat: |
| case EOpConstructVec2: |
| case EOpConstructVec3: |
| case EOpConstructVec4: |
| case EOpConstructBool: |
| case EOpConstructBVec2: |
| case EOpConstructBVec3: |
| case EOpConstructBVec4: |
| case EOpConstructInt: |
| case EOpConstructIVec2: |
| case EOpConstructIVec3: |
| case EOpConstructIVec4: |
| case EOpConstructUInt: |
| case EOpConstructUVec2: |
| case EOpConstructUVec3: |
| case EOpConstructUVec4: |
| if(visit == PostVisit) |
| { |
| int component = 0; |
| int arrayMaxIndex = result->isArray() ? result->getArraySize() - 1 : 0; |
| int arrayComponents = result->getType().getElementSize(); |
| for(int i = 0; i < argumentCount; i++) |
| { |
| TIntermTyped *argi = arg[i]->getAsTyped(); |
| int size = argi->getNominalSize(); |
| int arrayIndex = std::min(component / arrayComponents, arrayMaxIndex); |
| int swizzle = component - (arrayIndex * arrayComponents); |
| |
| if(!argi->isMatrix()) |
| { |
| Instruction *mov = emitCast(result, arrayIndex, argi, 0); |
| mov->dst.mask = (0xF << swizzle) & 0xF; |
| mov->src[0].swizzle = readSwizzle(argi, size) << (swizzle * 2); |
| |
| component += size; |
| } |
| else if(!result->isMatrix()) // Construct a non matrix from a matrix |
| { |
| Instruction *mov = emitCast(result, arrayIndex, argi, 0); |
| mov->dst.mask = (0xF << swizzle) & 0xF; |
| mov->src[0].swizzle = readSwizzle(argi, size) << (swizzle * 2); |
| |
| // At most one more instruction when constructing a vec3 from a mat2 or a vec4 from a mat2/mat3 |
| if(result->getNominalSize() > size) |
| { |
| Instruction *mov = emitCast(result, arrayIndex, argi, 1); |
| mov->dst.mask = (0xF << (swizzle + size)) & 0xF; |
| // mat2: xxxy (0x40), mat3: xxxx (0x00) |
| mov->src[0].swizzle = ((size == 2) ? 0x40 : 0x00) << (swizzle * 2); |
| } |
| |
| component += size; |
| } |
| else // Matrix |
| { |
| int column = 0; |
| |
| while(component < resultType.getNominalSize()) |
| { |
| Instruction *mov = emitCast(result, arrayIndex, argi, column); |
| mov->dst.mask = (0xF << swizzle) & 0xF; |
| mov->src[0].swizzle = readSwizzle(argi, size) << (swizzle * 2); |
| |
| column++; |
| component += size; |
| } |
| } |
| } |
| } |
| break; |
| case EOpConstructMat2: |
| case EOpConstructMat2x3: |
| case EOpConstructMat2x4: |
| case EOpConstructMat3x2: |
| case EOpConstructMat3: |
| case EOpConstructMat3x4: |
| case EOpConstructMat4x2: |
| case EOpConstructMat4x3: |
| case EOpConstructMat4: |
| if(visit == PostVisit) |
| { |
| TIntermTyped *arg0 = arg[0]->getAsTyped(); |
| const int outCols = result->getNominalSize(); |
| const int outRows = result->getSecondarySize(); |
| |
| if(arg0->isScalar() && arg.size() == 1) // Construct scale matrix |
| { |
| for(int i = 0; i < outCols; i++) |
| { |
| emit(sw::Shader::OPCODE_MOV, result, i, &zero); |
| if (i < outRows) |
| { |
| // Insert the scalar value on the main diagonal. |
| // For non-square matrices, Avoid emitting in |
| // a column which doesn't /have/ a main diagonal |
| // element, even though it would be fairly benign -- |
| // it's not necessarily trivial for downstream |
| // passes to see that this is redundant and strip it |
| // out. |
| Instruction *mov = emitCast(result, i, arg0, 0); |
| mov->dst.mask = 1 << i; |
| ASSERT(mov->src[0].swizzle == 0x00); |
| } |
| } |
| } |
| else if(arg0->isMatrix()) |
| { |
| int arraySize = result->isArray() ? result->getArraySize() : 1; |
| |
| for(int n = 0; n < arraySize; n++) |
| { |
| TIntermTyped *argi = arg[n]->getAsTyped(); |
| const int inCols = argi->getNominalSize(); |
| const int inRows = argi->getSecondarySize(); |
| |
| for(int i = 0; i < outCols; i++) |
| { |
| if(i >= inCols || outRows > inRows) |
| { |
| // Initialize to identity matrix |
| Constant col((i == 0 ? 1.0f : 0.0f), (i == 1 ? 1.0f : 0.0f), (i == 2 ? 1.0f : 0.0f), (i == 3 ? 1.0f : 0.0f)); |
| emitCast(result, i + n * outCols, &col, 0); |
| } |
| |
| if(i < inCols) |
| { |
| Instruction *mov = emitCast(result, i + n * outCols, argi, i); |
| mov->dst.mask = 0xF >> (4 - inRows); |
| } |
| } |
| } |
| } |
| else |
| { |
| int column = 0; |
| int row = 0; |
| |
| for(int i = 0; i < argumentCount; i++) |
| { |
| TIntermTyped *argi = arg[i]->getAsTyped(); |
| int size = argi->getNominalSize(); |
| int element = 0; |
| |
| while(element < size) |
| { |
| Instruction *mov = emitCast(result, column, argi, 0); |
| mov->dst.mask = (0xF << row) & 0xF; |
| mov->src[0].swizzle = (readSwizzle(argi, size) << (row * 2)) + 0x55 * element; |
| |
| int end = row + size - element; |
| column = end >= outRows ? column + 1 : column; |
| element = element + outRows - row; |
| row = end >= outRows ? 0 : end; |
| } |
| } |
| } |
| } |
| break; |
| case EOpConstructStruct: |
| if(visit == PostVisit) |
| { |
| int offset = 0; |
| for(int i = 0; i < argumentCount; i++) |
| { |
| TIntermTyped *argi = arg[i]->getAsTyped(); |
| int size = argi->totalRegisterCount(); |
| |
| for(int index = 0; index < size; index++) |
| { |
| Instruction *mov = emit(sw::Shader::OPCODE_MOV, result, index + offset, argi, index); |
| mov->dst.mask = writeMask(result, offset + index); |
| } |
| |
| offset += size; |
| } |
| } |
| break; |
| case EOpLessThan: if(visit == PostVisit) emitCmp(sw::Shader::CONTROL_LT, result, arg[0], arg[1]); break; |
| case EOpGreaterThan: if(visit == PostVisit) emitCmp(sw::Shader::CONTROL_GT, result, arg[0], arg[1]); break; |
| case EOpLessThanEqual: if(visit == PostVisit) emitCmp(sw::Shader::CONTROL_LE, result, arg[0], arg[1]); break; |
| case EOpGreaterThanEqual: if(visit == PostVisit) emitCmp(sw::Shader::CONTROL_GE, result, arg[0], arg[1]); break; |
| case EOpVectorEqual: if(visit == PostVisit) emitCmp(sw::Shader::CONTROL_EQ, result, arg[0], arg[1]); break; |
| case EOpVectorNotEqual: if(visit == PostVisit) emitCmp(sw::Shader::CONTROL_NE, result, arg[0], arg[1]); break; |
| case EOpMod: if(visit == PostVisit) emit(sw::Shader::OPCODE_MOD, result, arg[0], arg[1]); break; |
| case EOpModf: |
| if(visit == PostVisit) |
| { |
| TIntermTyped* arg1 = arg[1]->getAsTyped(); |
| emit(sw::Shader::OPCODE_TRUNC, arg1, arg[0]); |
| assignLvalue(arg1, arg1); |
| emitBinary(sw::Shader::OPCODE_SUB, result, arg[0], arg1); |
| } |
| break; |
| case EOpPow: if(visit == PostVisit) emit(sw::Shader::OPCODE_POW, result, arg[0], arg[1]); break; |
| case EOpAtan: if(visit == PostVisit) emit(sw::Shader::OPCODE_ATAN2, result, arg[0], arg[1]); break; |
| case EOpMin: if(visit == PostVisit) emit(getOpcode(sw::Shader::OPCODE_MIN, result), result, arg[0], arg[1]); break; |
| case EOpMax: if(visit == PostVisit) emit(getOpcode(sw::Shader::OPCODE_MAX, result), result, arg[0], arg[1]); break; |
| case EOpClamp: |
| if(visit == PostVisit) |
| { |
| emit(getOpcode(sw::Shader::OPCODE_MAX, result), result, arg[0], arg[1]); |
| emit(getOpcode(sw::Shader::OPCODE_MIN, result), result, result, arg[2]); |
| } |
| break; |
| case EOpMix: |
| if(visit == PostVisit) |
| { |
| if(arg[2]->getAsTyped()->getBasicType() == EbtBool) |
| { |
| emit(sw::Shader::OPCODE_SELECT, result, arg[2], arg[1], arg[0]); |
| } |
| else |
| { |
| emit(sw::Shader::OPCODE_LRP, result, arg[2], arg[1], arg[0]); |
| } |
| } |
| break; |
| case EOpStep: if(visit == PostVisit) emit(sw::Shader::OPCODE_STEP, result, arg[0], arg[1]); break; |
| case EOpSmoothStep: if(visit == PostVisit) emit(sw::Shader::OPCODE_SMOOTH, result, arg[0], arg[1], arg[2]); break; |
| case EOpDistance: if(visit == PostVisit) emit(sw::Shader::OPCODE_DIST(dim(arg[0])), result, arg[0], arg[1]); break; |
| case EOpDot: if(visit == PostVisit) emit(sw::Shader::OPCODE_DP(dim(arg[0])), result, arg[0], arg[1]); break; |
| case EOpCross: if(visit == PostVisit) emit(sw::Shader::OPCODE_CRS, result, arg[0], arg[1]); break; |
| case EOpFaceForward: if(visit == PostVisit) emit(sw::Shader::OPCODE_FORWARD(dim(arg[0])), result, arg[0], arg[1], arg[2]); break; |
| case EOpReflect: if(visit == PostVisit) emit(sw::Shader::OPCODE_REFLECT(dim(arg[0])), result, arg[0], arg[1]); break; |
| case EOpRefract: if(visit == PostVisit) emit(sw::Shader::OPCODE_REFRACT(dim(arg[0])), result, arg[0], arg[1], arg[2]); break; |
| case EOpMul: |
| if(visit == PostVisit) |
| { |
| TIntermTyped *arg0 = arg[0]->getAsTyped(); |
| ASSERT((arg0->getNominalSize() == arg[1]->getAsTyped()->getNominalSize()) && |
| (arg0->getSecondarySize() == arg[1]->getAsTyped()->getSecondarySize())); |
| |
| int size = arg0->getNominalSize(); |
| for(int i = 0; i < size; i++) |
| { |
| emit(sw::Shader::OPCODE_MUL, result, i, arg[0], i, arg[1], i); |
| } |
| } |
| break; |
| case EOpOuterProduct: |
| if(visit == PostVisit) |
| { |
| for(int i = 0; i < dim(arg[1]); i++) |
| { |
| Instruction *mul = emit(sw::Shader::OPCODE_MUL, result, i, arg[0], 0, arg[1]); |
| mul->src[1].swizzle = 0x55 * i; |
| } |
| } |
| break; |
| default: UNREACHABLE(node->getOp()); |
| } |
| |
| return true; |
| } |
| |
| bool OutputASM::visitSelection(Visit visit, TIntermSelection *node) |
| { |
| if(currentScope != emitScope) |
| { |
| return false; |
| } |
| |
| TIntermTyped *condition = node->getCondition(); |
| TIntermNode *trueBlock = node->getTrueBlock(); |
| TIntermNode *falseBlock = node->getFalseBlock(); |
| TIntermConstantUnion *constantCondition = condition->getAsConstantUnion(); |
| |
| condition->traverse(this); |
| |
| if(node->usesTernaryOperator()) |
| { |
| if(constantCondition) |
| { |
| bool trueCondition = constantCondition->getUnionArrayPointer()->getBConst(); |
| |
| if(trueCondition) |
| { |
| trueBlock->traverse(this); |
| copy(node, trueBlock); |
| } |
| else |
| { |
| falseBlock->traverse(this); |
| copy(node, falseBlock); |
| } |
| } |
| else if(trivial(node, 6)) // Fast to compute both potential results and no side effects |
| { |
| trueBlock->traverse(this); |
| falseBlock->traverse(this); |
| emit(sw::Shader::OPCODE_SELECT, node, condition, trueBlock, falseBlock); |
| } |
| else |
| { |
| emit(sw::Shader::OPCODE_IF, 0, condition); |
| |
| if(trueBlock) |
| { |
| trueBlock->traverse(this); |
| copy(node, trueBlock); |
| } |
| |
| if(falseBlock) |
| { |
| emit(sw::Shader::OPCODE_ELSE); |
| falseBlock->traverse(this); |
| copy(node, falseBlock); |
| } |
| |
| emit(sw::Shader::OPCODE_ENDIF); |
| } |
| } |
| else // if/else statement |
| { |
| if(constantCondition) |
| { |
| bool trueCondition = constantCondition->getUnionArrayPointer()->getBConst(); |
| |
| if(trueCondition) |
| { |
| if(trueBlock) |
| { |
| trueBlock->traverse(this); |
| } |
| } |
| else |
| { |
| if(falseBlock) |
| { |
| falseBlock->traverse(this); |
| } |
| } |
| } |
| else |
| { |
| emit(sw::Shader::OPCODE_IF, 0, condition); |
| |
| if(trueBlock) |
| { |
| trueBlock->traverse(this); |
| } |
| |
| if(falseBlock) |
| { |
| emit(sw::Shader::OPCODE_ELSE); |
| falseBlock->traverse(this); |
| } |
| |
| emit(sw::Shader::OPCODE_ENDIF); |
| } |
| } |
| |
| return false; |
| } |
| |
| bool OutputASM::visitLoop(Visit visit, TIntermLoop *node) |
| { |
| if(currentScope != emitScope) |
| { |
| return false; |
| } |
| |
| LoopInfo loop(node); |
| |
| if(loop.iterations == 0) |
| { |
| return false; |
| } |
| |
| bool unroll = (loop.iterations <= 4); |
| |
| TIntermNode *init = node->getInit(); |
| TIntermTyped *condition = node->getCondition(); |
| TIntermTyped *expression = node->getExpression(); |
| TIntermNode *body = node->getBody(); |
| Constant True(true); |
| |
| if(loop.isDeterministic()) |
| { |
| deterministicVariables.insert(loop.index->getId()); |
| |
| if(!unroll) |
| { |
| emit(sw::Shader::OPCODE_SCALAR); // Unrolled loops don't have an ENDWHILE to disable scalar mode. |
| } |
| } |
| |
| if(node->getType() == ELoopDoWhile) |
| { |
| Temporary iterate(this); |
| emit(sw::Shader::OPCODE_MOV, &iterate, &True); |
| |
| emit(sw::Shader::OPCODE_WHILE, 0, &iterate); // FIXME: Implement real do-while |
| |
| if(body) |
| { |
| body->traverse(this); |
| } |
| |
| emit(sw::Shader::OPCODE_TEST); |
| |
| condition->traverse(this); |
| emit(sw::Shader::OPCODE_MOV, &iterate, condition); |
| |
| emit(sw::Shader::OPCODE_ENDWHILE); |
| } |
| else |
| { |
| if(init) |
| { |
| init->traverse(this); |
| } |
| |
| if(unroll) |
| { |
| mContext.info(node->getLine(), "loop unrolled", "for"); |
| |
| for(unsigned int i = 0; i < loop.iterations; i++) |
| { |
| // condition->traverse(this); // Condition could contain statements, but not in an unrollable loop |
| |
| if(body) |
| { |
| body->traverse(this); |
| } |
| |
| if(expression) |
| { |
| expression->traverse(this); |
| } |
| } |
| } |
| else |
| { |
| if(condition) |
| { |
| condition->traverse(this); |
| } |
| else |
| { |
| condition = &True; |
| } |
| |
| emit(sw::Shader::OPCODE_WHILE, 0, condition); |
| |
| if(body) |
| { |
| body->traverse(this); |
| } |
| |
| emit(sw::Shader::OPCODE_TEST); |
| |
| if(loop.isDeterministic()) |
| { |
| emit(sw::Shader::OPCODE_SCALAR); |
| } |
| |
| if(expression) |
| { |
| expression->traverse(this); |
| } |
| |
| if(condition) |
| { |
| condition->traverse(this); |
| } |
| |
| emit(sw::Shader::OPCODE_ENDWHILE); |
| } |
| } |
| |
| if(loop.isDeterministic()) |
| { |
| deterministicVariables.erase(loop.index->getId()); |
| } |
| |
| return false; |
| } |
| |
| bool OutputASM::visitBranch(Visit visit, TIntermBranch *node) |
| { |
| if(currentScope != emitScope) |
| { |
| return false; |
| } |
| |
| switch(node->getFlowOp()) |
| { |
| case EOpKill: if(visit == PostVisit) emit(sw::Shader::OPCODE_DISCARD); break; |
| case EOpBreak: if(visit == PostVisit) emit(sw::Shader::OPCODE_BREAK); break; |
| case EOpContinue: if(visit == PostVisit) emit(sw::Shader::OPCODE_CONTINUE); break; |
| case EOpReturn: |
| if(visit == PostVisit) |
| { |
| TIntermTyped *value = node->getExpression(); |
| |
| if(value) |
| { |
| copy(functionArray[currentFunction].ret, value); |
| } |
| |
| emit(sw::Shader::OPCODE_LEAVE); |
| } |
| break; |
| default: UNREACHABLE(node->getFlowOp()); |
| } |
| |
| return true; |
| } |
| |
| bool OutputASM::visitSwitch(Visit visit, TIntermSwitch *node) |
| { |
| if(currentScope != emitScope) |
| { |
| return false; |
| } |
| |
| TIntermTyped* switchValue = node->getInit(); |
| TIntermAggregate* opList = node->getStatementList(); |
| |
| if(!switchValue || !opList) |
| { |
| return false; |
| } |
| |
| switchValue->traverse(this); |
| |
| emit(sw::Shader::OPCODE_SWITCH); |
| |
| TIntermSequence& sequence = opList->getSequence(); |
| TIntermSequence::iterator it = sequence.begin(); |
| TIntermSequence::iterator defaultIt = sequence.end(); |
| int nbCases = 0; |
| for(; it != sequence.end(); ++it) |
| { |
| TIntermCase* currentCase = (*it)->getAsCaseNode(); |
| if(currentCase) |
| { |
| TIntermSequence::iterator caseIt = it; |
| |
| TIntermTyped* condition = currentCase->getCondition(); |
| if(condition) // non default case |
| { |
| if(nbCases != 0) |
| { |
| emit(sw::Shader::OPCODE_ELSE); |
| } |
| |
| condition->traverse(this); |
| Temporary result(this); |
| emitBinary(sw::Shader::OPCODE_EQ, &result, switchValue, condition); |
| emit(sw::Shader::OPCODE_IF, 0, &result); |
| nbCases++; |
| |
| // Emit the code for this case and all subsequent cases until we hit a break statement. |
| // TODO: This can repeat a lot of code for switches with many fall-through cases. |
| for(++caseIt; caseIt != sequence.end(); ++caseIt) |
| { |
| (*caseIt)->traverse(this); |
| |
| // Stop if we encounter an unconditional branch (break, continue, return, or kill). |
| // TODO: This doesn't work if the statement is at a deeper scope level (e.g. {break;}). |
| // Note that this eliminates useless operations but shouldn't affect correctness. |
| if((*caseIt)->getAsBranchNode()) |
| { |
| break; |
| } |
| } |
| } |
| else |
| { |
| defaultIt = it; // The default case might not be the last case, keep it for last |
| } |
| } |
| } |
| |
| // If there's a default case, traverse it here |
| if(defaultIt != sequence.end()) |
| { |
| if(nbCases != 0) |
| { |
| emit(sw::Shader::OPCODE_ELSE); |
| } |
| |
| for(++defaultIt; defaultIt != sequence.end(); ++defaultIt) |
| { |
| (*defaultIt)->traverse(this); |
| if((*defaultIt)->getAsBranchNode()) // Kill, Break, Continue or Return |
| { |
| break; |
| } |
| } |
| } |
| |
| for(int i = 0; i < nbCases; ++i) |
| { |
| emit(sw::Shader::OPCODE_ENDIF); |
| } |
| |
| emit(sw::Shader::OPCODE_ENDSWITCH); |
| |
| return false; |
| } |
| |
| Instruction *OutputASM::emit(sw::Shader::Opcode op, TIntermTyped *dst, TIntermNode *src0, TIntermNode *src1, TIntermNode *src2, TIntermNode *src3, TIntermNode *src4) |
| { |
| return emit(op, dst, 0, src0, 0, src1, 0, src2, 0, src3, 0, src4, 0); |
| } |
| |
| Instruction *OutputASM::emit(sw::Shader::Opcode op, TIntermTyped *dst, int dstIndex, TIntermNode *src0, int index0, TIntermNode *src1, int index1, |
| TIntermNode *src2, int index2, TIntermNode *src3, int index3, TIntermNode *src4, int index4) |
| { |
| Instruction *instruction = new Instruction(op); |
| |
| if(dst) |
| { |
| destination(instruction->dst, dst, dstIndex); |
| } |
| |
| if(src0) |
| { |
| TIntermTyped* src = src0->getAsTyped(); |
| instruction->dst.partialPrecision = src && (src->getPrecision() <= EbpLow); |
| } |
| |
| source(instruction->src[0], src0, index0); |
| source(instruction->src[1], src1, index1); |
| source(instruction->src[2], src2, index2); |
| source(instruction->src[3], src3, index3); |
| source(instruction->src[4], src4, index4); |
| |
| shader->append(instruction); |
| |
| return instruction; |
| } |
| |
| Instruction *OutputASM::emitCast(TIntermTyped *dst, TIntermTyped *src) |
| { |
| return emitCast(dst, 0, src, 0); |
| } |
| |
| Instruction *OutputASM::emitCast(TIntermTyped *dst, int dstIndex, TIntermTyped *src, int srcIndex) |
| { |
| switch(src->getBasicType()) |
| { |
| case EbtBool: |
| switch(dst->getBasicType()) |
| { |
| case EbtInt: return emit(sw::Shader::OPCODE_B2I, dst, dstIndex, src, srcIndex); |
| case EbtUInt: return emit(sw::Shader::OPCODE_B2I, dst, dstIndex, src, srcIndex); |
| case EbtFloat: return emit(sw::Shader::OPCODE_B2F, dst, dstIndex, src, srcIndex); |
| default: break; |
| } |
| break; |
| case EbtInt: |
| switch(dst->getBasicType()) |
| { |
| case EbtBool: return emit(sw::Shader::OPCODE_I2B, dst, dstIndex, src, srcIndex); |
| case EbtFloat: return emit(sw::Shader::OPCODE_I2F, dst, dstIndex, src, srcIndex); |
| default: break; |
| } |
| break; |
| case EbtUInt: |
| switch(dst->getBasicType()) |
| { |
| case EbtBool: return emit(sw::Shader::OPCODE_I2B, dst, dstIndex, src, srcIndex); |
| case EbtFloat: return emit(sw::Shader::OPCODE_U2F, dst, dstIndex, src, srcIndex); |
| default: break; |
| } |
| break; |
| case EbtFloat: |
| switch(dst->getBasicType()) |
| { |
| case EbtBool: return emit(sw::Shader::OPCODE_F2B, dst, dstIndex, src, srcIndex); |
| case EbtInt: return emit(sw::Shader::OPCODE_F2I, dst, dstIndex, src, srcIndex); |
| case EbtUInt: return emit(sw::Shader::OPCODE_F2U, dst, dstIndex, src, srcIndex); |
| default: break; |
| } |
| break; |
| default: |
| break; |
| } |
| |
| ASSERT((src->getBasicType() == dst->getBasicType()) || |
| ((src->getBasicType() == EbtInt) && (dst->getBasicType() == EbtUInt)) || |
| ((src->getBasicType() == EbtUInt) && (dst->getBasicType() == EbtInt))); |
| |
| return emit(sw::Shader::OPCODE_MOV, dst, dstIndex, src, srcIndex); |
| } |
| |
| void OutputASM::emitBinary(sw::Shader::Opcode op, TIntermTyped *dst, TIntermNode *src0, TIntermNode *src1, TIntermNode *src2) |
| { |
| for(int index = 0; index < dst->elementRegisterCount(); index++) |
| { |
| emit(op, dst, index, src0, index, src1, index, src2, index); |
| } |
| } |
| |
| void OutputASM::emitAssign(sw::Shader::Opcode op, TIntermTyped *result, TIntermTyped *lhs, TIntermTyped *src0, TIntermTyped *src1) |
| { |
| emitBinary(op, result, src0, src1); |
| assignLvalue(lhs, result); |
| } |
| |
| void OutputASM::emitCmp(sw::Shader::Control cmpOp, TIntermTyped *dst, TIntermNode *left, TIntermNode *right, int index) |
| { |
| sw::Shader::Opcode opcode; |
| switch(left->getAsTyped()->getBasicType()) |
| { |
| case EbtBool: |
| case EbtInt: |
| opcode = sw::Shader::OPCODE_ICMP; |
| break; |
| case EbtUInt: |
| opcode = sw::Shader::OPCODE_UCMP; |
| break; |
| default: |
| opcode = sw::Shader::OPCODE_CMP; |
| break; |
| } |
| |
| Instruction *cmp = emit(opcode, dst, 0, left, index, right, index); |
| cmp->control = cmpOp; |
| } |
| |
| int componentCount(const TType &type, int registers) |
| { |
| if(registers == 0) |
| { |
| return 0; |
| } |
| |
| if(type.isArray() && registers >= type.elementRegisterCount()) |
| { |
| int index = registers / type.elementRegisterCount(); |
| registers -= index * type.elementRegisterCount(); |
| return index * type.getElementSize() + componentCount(type, registers); |
| } |
| |
| if(type.isStruct() || type.isInterfaceBlock()) |
| { |
| const TFieldList& fields = type.getStruct() ? type.getStruct()->fields() : type.getInterfaceBlock()->fields(); |
| int elements = 0; |
| |
| for(const auto &field : fields) |
| { |
| const TType &fieldType = *(field->type()); |
| |
| if(fieldType.totalRegisterCount() <= registers) |
| { |
| registers -= fieldType.totalRegisterCount(); |
| elements += fieldType.getObjectSize(); |
| } |
| else // Register within this field |
| { |
| return elements + componentCount(fieldType, registers); |
| } |
| } |
| } |
| else if(type.isMatrix()) |
| { |
| return registers * type.registerSize(); |
| } |
| |
| UNREACHABLE(0); |
| return 0; |
| } |
| |
| int registerSize(const TType &type, int registers) |
| { |
| if(registers == 0) |
| { |
| if(type.isStruct()) |
| { |
| return registerSize(*((*(type.getStruct()->fields().begin()))->type()), 0); |
| } |
| else if(type.isInterfaceBlock()) |
| { |
| return registerSize(*((*(type.getInterfaceBlock()->fields().begin()))->type()), 0); |
| } |
| |
| return type.registerSize(); |
| } |
| |
| if(type.isArray() && registers >= type.elementRegisterCount()) |
| { |
| int index = registers / type.elementRegisterCount(); |
| registers -= index * type.elementRegisterCount(); |
| return registerSize(type, registers); |
| } |
| |
| if(type.isStruct() || type.isInterfaceBlock()) |
| { |
| const TFieldList& fields = type.getStruct() ? type.getStruct()->fields() : type.getInterfaceBlock()->fields(); |
| int elements = 0; |
| |
| for(const auto &field : fields) |
| { |
| const TType &fieldType = *(field->type()); |
| |
| if(fieldType.totalRegisterCount() <= registers) |
| { |
| registers -= fieldType.totalRegisterCount(); |
| elements += fieldType.getObjectSize(); |
| } |
| else // Register within this field |
| { |
| return registerSize(fieldType, registers); |
| } |
| } |
| } |
| else if(type.isMatrix()) |
| { |
| return registerSize(type, 0); |
| } |
| |
| UNREACHABLE(0); |
| return 0; |
| } |
| |
| int OutputASM::getBlockId(TIntermTyped *arg) |
| { |
| if(arg) |
| { |
| const TType &type = arg->getType(); |
| TInterfaceBlock* block = type.getInterfaceBlock(); |
| if(block && (type.getQualifier() == EvqUniform)) |
| { |
| // Make sure the uniform block is declared |
| uniformRegister(arg); |
| |
| const char* blockName = block->name().c_str(); |
| |
| // Fetch uniform block index from array of blocks |
| for(ActiveUniformBlocks::const_iterator it = shaderObject->activeUniformBlocks.begin(); it != shaderObject->activeUniformBlocks.end(); ++it) |
| { |
| if(blockName == it->name) |
| { |
| return it->blockId; |
| } |
| } |
| |
| ASSERT(false); |
| } |
| } |
| |
| return -1; |
| } |
| |
| OutputASM::ArgumentInfo OutputASM::getArgumentInfo(TIntermTyped *arg, int index) |
| { |
| const TType &type = arg->getType(); |
| int blockId = getBlockId(arg); |
| ArgumentInfo argumentInfo(BlockMemberInfo::getDefaultBlockInfo(), type, -1, -1); |
| if(blockId != -1) |
| { |
| argumentInfo.bufferIndex = 0; |
| for(int i = 0; i < blockId; ++i) |
| { |
| int blockArraySize = shaderObject->activeUniformBlocks[i].arraySize; |
| argumentInfo.bufferIndex += blockArraySize > 0 ? blockArraySize : 1; |
| } |
| |
| const BlockDefinitionIndexMap& blockDefinition = blockDefinitions[blockId]; |
| |
| BlockDefinitionIndexMap::const_iterator itEnd = blockDefinition.end(); |
| BlockDefinitionIndexMap::const_iterator it = itEnd; |
| |
| argumentInfo.clampedIndex = index; |
| if(type.isInterfaceBlock()) |
| { |
| // Offset index to the beginning of the selected instance |
| int blockRegisters = type.elementRegisterCount(); |
| int bufferOffset = argumentInfo.clampedIndex / blockRegisters; |
| argumentInfo.bufferIndex += bufferOffset; |
| argumentInfo.clampedIndex -= bufferOffset * blockRegisters; |
| } |
| |
| int regIndex = registerIndex(arg); |
| for(int i = regIndex + argumentInfo.clampedIndex; i >= regIndex; --i) |
| { |
| it = blockDefinition.find(i); |
| if(it != itEnd) |
| { |
| argumentInfo.clampedIndex -= (i - regIndex); |
| break; |
| } |
| } |
| ASSERT(it != itEnd); |
| |
| argumentInfo.typedMemberInfo = it->second; |
| |
| int registerCount = argumentInfo.typedMemberInfo.type.totalRegisterCount(); |
| argumentInfo.clampedIndex = (argumentInfo.clampedIndex >= registerCount) ? registerCount - 1 : argumentInfo.clampedIndex; |
| } |
| else |
| { |
| argumentInfo.clampedIndex = (index >= arg->totalRegisterCount()) ? arg->totalRegisterCount() - 1 : index; |
| } |
| |
| return argumentInfo; |
| } |
| |
| void OutputASM::source(sw::Shader::SourceParameter ¶meter, TIntermNode *argument, int index) |
| { |
| if(argument) |
| { |
| TIntermTyped *arg = argument->getAsTyped(); |
| Temporary unpackedUniform(this); |
| |
| const TType& srcType = arg->getType(); |
| TInterfaceBlock* srcBlock = srcType.getInterfaceBlock(); |
| if(srcBlock && (srcType.getQualifier() == EvqUniform)) |
| { |
| const ArgumentInfo argumentInfo = getArgumentInfo(arg, index); |
| const TType &memberType = argumentInfo.typedMemberInfo.type; |
| |
| if(memberType.getBasicType() == EbtBool) |
| { |
| ASSERT(argumentInfo.clampedIndex < (memberType.isArray() ? memberType.getArraySize() : 1)); // index < arraySize |
| |
| // Convert the packed bool, which is currently an int, to a true bool |
| Instruction *instruction = new Instruction(sw::Shader::OPCODE_I2B); |
| instruction->dst.type = sw::Shader::PARAMETER_TEMP; |
| instruction->dst.index = registerIndex(&unpackedUniform); |
| instruction->src[0].type = sw::Shader::PARAMETER_CONST; |
| instruction->src[0].bufferIndex = argumentInfo.bufferIndex; |
| instruction->src[0].index = argumentInfo.typedMemberInfo.offset + argumentInfo.clampedIndex * argumentInfo.typedMemberInfo.arrayStride; |
| |
| shader->append(instruction); |
| |
| arg = &unpackedUniform; |
| index = 0; |
| } |
| else if((memberType.getLayoutQualifier().matrixPacking == EmpRowMajor) && memberType.isMatrix()) |
| { |
| int numCols = memberType.getNominalSize(); |
| int numRows = memberType.getSecondarySize(); |
| |
| ASSERT(argumentInfo.clampedIndex < (numCols * (memberType.isArray() ? memberType.getArraySize() : 1))); // index < cols * arraySize |
| |
| unsigned int dstIndex = registerIndex(&unpackedUniform); |
| unsigned int srcSwizzle = (argumentInfo.clampedIndex % numCols) * 0x55; |
| int arrayIndex = argumentInfo.clampedIndex / numCols; |
| int matrixStartOffset = argumentInfo.typedMemberInfo.offset + arrayIndex * argumentInfo.typedMemberInfo.arrayStride; |
| |
| for(int j = 0; j < numRows; ++j) |
| { |
| // Transpose the row major matrix |
| Instruction *instruction = new Instruction(sw::Shader::OPCODE_MOV); |
| instruction->dst.type = sw::Shader::PARAMETER_TEMP; |
| instruction->dst.index = dstIndex; |
| instruction->dst.mask = 1 << j; |
| instruction->src[0].type = sw::Shader::PARAMETER_CONST; |
| instruction->src[0].bufferIndex = argumentInfo.bufferIndex; |
| instruction->src[0].index = matrixStartOffset + j * argumentInfo.typedMemberInfo.matrixStride; |
| instruction->src[0].swizzle = srcSwizzle; |
| |
| shader->append(instruction); |
| } |
| |
| arg = &unpackedUniform; |
| index = 0; |
| } |
| } |
| |
| const ArgumentInfo argumentInfo = getArgumentInfo(arg, index); |
| const TType &type = argumentInfo.typedMemberInfo.type; |
| |
| int size = registerSize(type, argumentInfo.clampedIndex); |
| |
| parameter.type = registerType(arg); |
| parameter.bufferIndex = argumentInfo.bufferIndex; |
| |
| if(arg->getAsConstantUnion() && arg->getAsConstantUnion()->getUnionArrayPointer()) |
| { |
| int component = componentCount(type, argumentInfo.clampedIndex); |
| ConstantUnion *constants = arg->getAsConstantUnion()->getUnionArrayPointer(); |
| |
| for(int i = 0; i < 4; i++) |
| { |
| if(size == 1) // Replicate |
| { |
| parameter.value[i] = constants[component + 0].getAsFloat(); |
| } |
| else if(i < size) |
| { |
| parameter.value[i] = constants[component + i].getAsFloat(); |
| } |
| else |
| { |
| parameter.value[i] = 0.0f; |
| } |
| } |
| } |
| else |
| { |
| parameter.index = registerIndex(arg) + argumentInfo.clampedIndex; |
| |
| if(parameter.bufferIndex != -1) |
| { |
| int stride = (argumentInfo.typedMemberInfo.matrixStride > 0) ? argumentInfo.typedMemberInfo.matrixStride : argumentInfo.typedMemberInfo.arrayStride; |
| parameter.index = argumentInfo.typedMemberInfo.offset + argumentInfo.clampedIndex * stride; |
| } |
| |
| if(parameter.index >= sw::NUM_TEMPORARY_REGISTERS) |
| { |
| mContext.error(arg->getLine(), |
| "Too many temporary registers required to compile shader", |
| pixelShader ? "pixel shader" : "vertex shader"); |
| } |
| } |
| |
| if(!IsSampler(arg->getBasicType())) |
| { |
| parameter.swizzle = readSwizzle(arg, size); |
| } |
| } |
| } |
| |
| void OutputASM::destination(sw::Shader::DestinationParameter ¶meter, TIntermTyped *arg, int index) |
| { |
| parameter.type = registerType(arg); |
| parameter.index = registerIndex(arg) + index; |
| parameter.mask = writeMask(arg, index); |
| |
| if(parameter.index >= sw::NUM_TEMPORARY_REGISTERS) |
| { |
| mContext.error(arg->getLine(), |
| "Too many temporary registers required to compile shader", |
| pixelShader ? "pixel shader" : "vertex shader"); |
| } |
| |
| } |
| |
| void OutputASM::copy(TIntermTyped *dst, TIntermNode *src, int offset) |
| { |
| for(int index = 0; index < dst->totalRegisterCount(); index++) |
| { |
| emit(sw::Shader::OPCODE_MOV, dst, index, src, offset + index); |
| } |
| } |
| |
| int swizzleElement(int swizzle, int index) |
| { |
| return (swizzle >> (index * 2)) & 0x03; |
| } |
| |
| int swizzleSwizzle(int leftSwizzle, int rightSwizzle) |
| { |
| return (swizzleElement(leftSwizzle, swizzleElement(rightSwizzle, 0)) << 0) | |
| (swizzleElement(leftSwizzle, swizzleElement(rightSwizzle, 1)) << 2) | |
| (swizzleElement(leftSwizzle, swizzleElement(rightSwizzle, 2)) << 4) | |
| (swizzleElement(leftSwizzle, swizzleElement(rightSwizzle, 3)) << 6); |
| } |
| |
| void OutputASM::assignLvalue(TIntermTyped *dst, TIntermTyped *src) |
| { |
| if((src->isVector() && (!dst->isVector() || (src->getNominalSize() != dst->getNominalSize()))) || |
| (src->isMatrix() && (!dst->isMatrix() || (src->getNominalSize() != dst->getNominalSize()) || (src->getSecondarySize() != dst->getSecondarySize())))) |
| { |
| return mContext.error(src->getLine(), "Result type should match the l-value type in compound assignment", src->isVector() ? "vector" : "matrix"); |
| } |
| |
| TIntermBinary *binary = dst->getAsBinaryNode(); |
| |
| if(binary && binary->getOp() == EOpIndexIndirect && binary->getLeft()->isVector() && dst->isScalar()) |
| { |
| Instruction *insert = new Instruction(sw::Shader::OPCODE_INSERT); |
| |
| lvalue(insert->dst, dst); |
| |
| insert->src[0].type = insert->dst.type; |
| insert->src[0].index = insert->dst.index; |
| insert->src[0].rel = insert->dst.rel; |
| source(insert->src[1], src); |
| source(insert->src[2], binary->getRight()); |
| |
| shader->append(insert); |
| } |
| else |
| { |
| Instruction *mov1 = new Instruction(sw::Shader::OPCODE_MOV); |
| |
| int swizzle = lvalue(mov1->dst, dst); |
| |
| source(mov1->src[0], src); |
| mov1->src[0].swizzle = swizzleSwizzle(mov1->src[0].swizzle, swizzle); |
| |
| shader->append(mov1); |
| |
| for(int offset = 1; offset < dst->totalRegisterCount(); offset++) |
| { |
| Instruction *mov = new Instruction(sw::Shader::OPCODE_MOV); |
| |
| mov->dst = mov1->dst; |
| mov->dst.index += offset; |
| mov->dst.mask = writeMask(dst, offset); |
| |
| source(mov->src[0], src, offset); |
| |
| shader->append(mov); |
| } |
| } |
| } |
| |
| void OutputASM::evaluateRvalue(TIntermTyped *node) |
| { |
| TIntermBinary *binary = node->getAsBinaryNode(); |
| |
| if(binary && binary->getOp() == EOpIndexIndirect && binary->getLeft()->isVector() && node->isScalar()) |
| { |
| Instruction *insert = new Instruction(sw::Shader::OPCODE_EXTRACT); |
| |
| destination(insert->dst, node); |
| |
| Temporary address(this); |
| unsigned char mask; |
| TIntermTyped *root = nullptr; |
| unsigned int offset = 0; |
| int swizzle = lvalue(root, offset, insert->src[0].rel, mask, address, node); |
| |
| source(insert->src[0], root, offset); |
| insert->src[0].swizzle = swizzleSwizzle(insert->src[0].swizzle, swizzle); |
| |
| source(insert->src[1], binary->getRight()); |
| |
| shader->append(insert); |
| } |
| else |
| { |
| Instruction *mov1 = new Instruction(sw::Shader::OPCODE_MOV); |
| |
| destination(mov1->dst, node, 0); |
| |
| Temporary address(this); |
| unsigned char mask; |
| TIntermTyped *root = nullptr; |
| unsigned int offset = 0; |
| int swizzle = lvalue(root, offset, mov1->src[0].rel, mask, address, node); |
| |
| source(mov1->src[0], root, offset); |
| mov1->src[0].swizzle = swizzleSwizzle(mov1->src[0].swizzle, swizzle); |
| |
| shader->append(mov1); |
| |
| for(int i = 1; i < node->
|