| // | |
| // Copyright (c) 2002-2014 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/translator/OutputGLSLBase.h" | |
| #include "angle_gl.h" | |
| #include "common/debug.h" | |
| #include "common/mathutil.h" | |
| #include "compiler/translator/Compiler.h" | |
| #include "compiler/translator/util.h" | |
| #include <cfloat> | |
| namespace sh | |
| { | |
| namespace | |
| { | |
| bool isSingleStatement(TIntermNode *node) | |
| { | |
| if (node->getAsFunctionDefinition()) | |
| { | |
| return false; | |
| } | |
| else if (node->getAsBlock()) | |
| { | |
| return false; | |
| } | |
| else if (node->getAsIfElseNode()) | |
| { | |
| return false; | |
| } | |
| else if (node->getAsLoopNode()) | |
| { | |
| return false; | |
| } | |
| else if (node->getAsSwitchNode()) | |
| { | |
| return false; | |
| } | |
| else if (node->getAsCaseNode()) | |
| { | |
| return false; | |
| } | |
| else if (node->getAsPreprocessorDirective()) | |
| { | |
| return false; | |
| } | |
| return true; | |
| } | |
| class CommaSeparatedListItemPrefixGenerator | |
| { | |
| public: | |
| CommaSeparatedListItemPrefixGenerator() : mFirst(true) {} | |
| private: | |
| bool mFirst; | |
| friend TInfoSinkBase &operator<<(TInfoSinkBase &out, | |
| CommaSeparatedListItemPrefixGenerator &gen); | |
| }; | |
| TInfoSinkBase &operator<<(TInfoSinkBase &out, CommaSeparatedListItemPrefixGenerator &gen) | |
| { | |
| if (gen.mFirst) | |
| { | |
| gen.mFirst = false; | |
| } | |
| else | |
| { | |
| out << ", "; | |
| } | |
| return out; | |
| } | |
| } // namespace | |
| TOutputGLSLBase::TOutputGLSLBase(TInfoSinkBase &objSink, | |
| ShArrayIndexClampingStrategy clampingStrategy, | |
| ShHashFunction64 hashFunction, | |
| NameMap &nameMap, | |
| TSymbolTable *symbolTable, | |
| sh::GLenum shaderType, | |
| int shaderVersion, | |
| ShShaderOutput output, | |
| ShCompileOptions compileOptions) | |
| : TIntermTraverser(true, true, true, symbolTable), | |
| mObjSink(objSink), | |
| mDeclaringVariable(false), | |
| mClampingStrategy(clampingStrategy), | |
| mHashFunction(hashFunction), | |
| mNameMap(nameMap), | |
| mShaderType(shaderType), | |
| mShaderVersion(shaderVersion), | |
| mOutput(output), | |
| mCompileOptions(compileOptions) | |
| { | |
| } | |
| void TOutputGLSLBase::writeInvariantQualifier(const TType &type) | |
| { | |
| if (!sh::RemoveInvariant(mShaderType, mShaderVersion, mOutput, mCompileOptions)) | |
| { | |
| TInfoSinkBase &out = objSink(); | |
| out << "invariant "; | |
| } | |
| } | |
| void TOutputGLSLBase::writeFloat(TInfoSinkBase &out, float f) | |
| { | |
| if ((gl::isInf(f) || gl::isNaN(f)) && mShaderVersion >= 300) | |
| { | |
| out << "uintBitsToFloat(" << gl::bitCast<uint32_t>(f) << "u)"; | |
| } | |
| else | |
| { | |
| out << std::min(FLT_MAX, std::max(-FLT_MAX, f)); | |
| } | |
| } | |
| void TOutputGLSLBase::writeTriplet(Visit visit, | |
| const char *preStr, | |
| const char *inStr, | |
| const char *postStr) | |
| { | |
| TInfoSinkBase &out = objSink(); | |
| if (visit == PreVisit && preStr) | |
| out << preStr; | |
| else if (visit == InVisit && inStr) | |
| out << inStr; | |
| else if (visit == PostVisit && postStr) | |
| out << postStr; | |
| } | |
| void TOutputGLSLBase::writeBuiltInFunctionTriplet(Visit visit, | |
| TOperator op, | |
| bool useEmulatedFunction) | |
| { | |
| TInfoSinkBase &out = objSink(); | |
| if (visit == PreVisit) | |
| { | |
| const char *opStr(GetOperatorString(op)); | |
| if (useEmulatedFunction) | |
| { | |
| BuiltInFunctionEmulator::WriteEmulatedFunctionName(out, opStr); | |
| } | |
| else | |
| { | |
| out << opStr; | |
| } | |
| out << "("; | |
| } | |
| else | |
| { | |
| writeTriplet(visit, nullptr, ", ", ")"); | |
| } | |
| } | |
| void TOutputGLSLBase::writeLayoutQualifier(TIntermTyped *variable) | |
| { | |
| const TType &type = variable->getType(); | |
| if (!NeedsToWriteLayoutQualifier(type)) | |
| { | |
| return; | |
| } | |
| if (type.getBasicType() == EbtInterfaceBlock) | |
| { | |
| const TInterfaceBlock *interfaceBlock = type.getInterfaceBlock(); | |
| declareInterfaceBlockLayout(interfaceBlock); | |
| return; | |
| } | |
| TInfoSinkBase &out = objSink(); | |
| const TLayoutQualifier &layoutQualifier = type.getLayoutQualifier(); | |
| out << "layout("; | |
| CommaSeparatedListItemPrefixGenerator listItemPrefix; | |
| if (type.getQualifier() == EvqFragmentOut || type.getQualifier() == EvqVertexIn || | |
| IsVarying(type.getQualifier())) | |
| { | |
| if (layoutQualifier.location >= 0) | |
| { | |
| out << listItemPrefix << "location = " << layoutQualifier.location; | |
| } | |
| } | |
| if (type.getQualifier() == EvqFragmentOut) | |
| { | |
| if (layoutQualifier.yuv == true) | |
| { | |
| out << listItemPrefix << "yuv"; | |
| } | |
| } | |
| if (IsOpaqueType(type.getBasicType())) | |
| { | |
| if (layoutQualifier.binding >= 0) | |
| { | |
| out << listItemPrefix << "binding = " << layoutQualifier.binding; | |
| } | |
| } | |
| if (IsImage(type.getBasicType())) | |
| { | |
| if (layoutQualifier.imageInternalFormat != EiifUnspecified) | |
| { | |
| ASSERT(type.getQualifier() == EvqTemporary || type.getQualifier() == EvqUniform); | |
| out << listItemPrefix | |
| << getImageInternalFormatString(layoutQualifier.imageInternalFormat); | |
| } | |
| } | |
| if (IsAtomicCounter(type.getBasicType())) | |
| { | |
| out << listItemPrefix << "offset = " << layoutQualifier.offset; | |
| } | |
| out << ") "; | |
| } | |
| void TOutputGLSLBase::writeQualifier(TQualifier qualifier, const TSymbol *symbol) | |
| { | |
| const char *result = mapQualifierToString(qualifier); | |
| if (result && result[0] != '\0') | |
| { | |
| objSink() << result << " "; | |
| } | |
| } | |
| const char *TOutputGLSLBase::mapQualifierToString(TQualifier qualifier) | |
| { | |
| if (sh::IsGLSL410OrOlder(mOutput) && mShaderVersion >= 300 && | |
| (mCompileOptions & SH_REMOVE_INVARIANT_AND_CENTROID_FOR_ESSL3) != 0) | |
| { | |
| switch (qualifier) | |
| { | |
| // The return string is consistent with sh::getQualifierString() from | |
| // BaseTypes.h minus the "centroid" keyword. | |
| case EvqCentroid: | |
| return ""; | |
| case EvqCentroidIn: | |
| return "smooth in"; | |
| case EvqCentroidOut: | |
| return "smooth out"; | |
| default: | |
| break; | |
| } | |
| } | |
| if (sh::IsGLSL130OrNewer(mOutput)) | |
| { | |
| switch (qualifier) | |
| { | |
| case EvqAttribute: | |
| return "in"; | |
| case EvqVaryingIn: | |
| return "in"; | |
| case EvqVaryingOut: | |
| return "out"; | |
| default: | |
| break; | |
| } | |
| } | |
| return sh::getQualifierString(qualifier); | |
| } | |
| void TOutputGLSLBase::writeVariableType(const TType &type, const TSymbol *symbol) | |
| { | |
| TQualifier qualifier = type.getQualifier(); | |
| TInfoSinkBase &out = objSink(); | |
| if (type.isInvariant()) | |
| { | |
| writeInvariantQualifier(type); | |
| } | |
| if (qualifier != EvqTemporary && qualifier != EvqGlobal) | |
| { | |
| writeQualifier(qualifier, symbol); | |
| } | |
| const TMemoryQualifier &memoryQualifier = type.getMemoryQualifier(); | |
| if (memoryQualifier.readonly) | |
| { | |
| ASSERT(IsImage(type.getBasicType())); | |
| out << "readonly "; | |
| } | |
| if (memoryQualifier.writeonly) | |
| { | |
| ASSERT(IsImage(type.getBasicType())); | |
| out << "writeonly "; | |
| } | |
| if (memoryQualifier.coherent) | |
| { | |
| ASSERT(IsImage(type.getBasicType())); | |
| out << "coherent "; | |
| } | |
| if (memoryQualifier.restrictQualifier) | |
| { | |
| ASSERT(IsImage(type.getBasicType())); | |
| out << "restrict "; | |
| } | |
| if (memoryQualifier.volatileQualifier) | |
| { | |
| ASSERT(IsImage(type.getBasicType())); | |
| out << "volatile "; | |
| } | |
| // Declare the struct if we have not done so already. | |
| if (type.getBasicType() == EbtStruct && !structDeclared(type.getStruct())) | |
| { | |
| const TStructure *structure = type.getStruct(); | |
| declareStruct(structure); | |
| } | |
| else if (type.getBasicType() == EbtInterfaceBlock) | |
| { | |
| const TInterfaceBlock *interfaceBlock = type.getInterfaceBlock(); | |
| declareInterfaceBlock(interfaceBlock); | |
| } | |
| else | |
| { | |
| if (writeVariablePrecision(type.getPrecision())) | |
| out << " "; | |
| out << getTypeName(type); | |
| } | |
| } | |
| void TOutputGLSLBase::writeFunctionParameters(const TFunction *func) | |
| { | |
| TInfoSinkBase &out = objSink(); | |
| size_t paramCount = func->getParamCount(); | |
| for (size_t i = 0; i < paramCount; ++i) | |
| { | |
| const TVariable *param = func->getParam(i); | |
| const TType &type = param->getType(); | |
| writeVariableType(type, param); | |
| if (param->symbolType() != SymbolType::Empty) | |
| out << " " << hashName(param); | |
| if (type.isArray()) | |
| out << ArrayString(type); | |
| // Put a comma if this is not the last argument. | |
| if (i != paramCount - 1) | |
| out << ", "; | |
| } | |
| } | |
| const TConstantUnion *TOutputGLSLBase::writeConstantUnion(const TType &type, | |
| const TConstantUnion *pConstUnion) | |
| { | |
| TInfoSinkBase &out = objSink(); | |
| if (type.getBasicType() == EbtStruct) | |
| { | |
| const TStructure *structure = type.getStruct(); | |
| out << hashName(structure) << "("; | |
| const TFieldList &fields = structure->fields(); | |
| for (size_t i = 0; i < fields.size(); ++i) | |
| { | |
| const TType *fieldType = fields[i]->type(); | |
| ASSERT(fieldType != nullptr); | |
| pConstUnion = writeConstantUnion(*fieldType, pConstUnion); | |
| if (i != fields.size() - 1) | |
| out << ", "; | |
| } | |
| out << ")"; | |
| } | |
| else | |
| { | |
| size_t size = type.getObjectSize(); | |
| bool writeType = size > 1; | |
| if (writeType) | |
| out << getTypeName(type) << "("; | |
| for (size_t i = 0; i < size; ++i, ++pConstUnion) | |
| { | |
| switch (pConstUnion->getType()) | |
| { | |
| case EbtFloat: | |
| writeFloat(out, pConstUnion->getFConst()); | |
| break; | |
| case EbtInt: | |
| out << pConstUnion->getIConst(); | |
| break; | |
| case EbtUInt: | |
| out << pConstUnion->getUConst() << "u"; | |
| break; | |
| case EbtBool: | |
| out << pConstUnion->getBConst(); | |
| break; | |
| case EbtYuvCscStandardEXT: | |
| out << getYuvCscStandardEXTString(pConstUnion->getYuvCscStandardEXTConst()); | |
| break; | |
| default: | |
| UNREACHABLE(); | |
| } | |
| if (i != size - 1) | |
| out << ", "; | |
| } | |
| if (writeType) | |
| out << ")"; | |
| } | |
| return pConstUnion; | |
| } | |
| void TOutputGLSLBase::writeConstructorTriplet(Visit visit, const TType &type) | |
| { | |
| TInfoSinkBase &out = objSink(); | |
| if (visit == PreVisit) | |
| { | |
| if (type.isArray()) | |
| { | |
| out << getTypeName(type); | |
| out << ArrayString(type); | |
| out << "("; | |
| } | |
| else | |
| { | |
| out << getTypeName(type) << "("; | |
| } | |
| } | |
| else | |
| { | |
| writeTriplet(visit, nullptr, ", ", ")"); | |
| } | |
| } | |
| void TOutputGLSLBase::visitSymbol(TIntermSymbol *node) | |
| { | |
| TInfoSinkBase &out = objSink(); | |
| out << hashName(&node->variable()); | |
| if (mDeclaringVariable && node->getType().isArray()) | |
| out << ArrayString(node->getType()); | |
| } | |
| void TOutputGLSLBase::visitConstantUnion(TIntermConstantUnion *node) | |
| { | |
| writeConstantUnion(node->getType(), node->getConstantValue()); | |
| } | |
| bool TOutputGLSLBase::visitSwizzle(Visit visit, TIntermSwizzle *node) | |
| { | |
| TInfoSinkBase &out = objSink(); | |
| if (visit == PostVisit) | |
| { | |
| out << "."; | |
| node->writeOffsetsAsXYZW(&out); | |
| } | |
| return true; | |
| } | |
| bool TOutputGLSLBase::visitBinary(Visit visit, TIntermBinary *node) | |
| { | |
| bool visitChildren = true; | |
| TInfoSinkBase &out = objSink(); | |
| switch (node->getOp()) | |
| { | |
| case EOpComma: | |
| writeTriplet(visit, "(", ", ", ")"); | |
| break; | |
| case EOpInitialize: | |
| if (visit == InVisit) | |
| { | |
| out << " = "; | |
| // RHS of initialize is not being declared. | |
| mDeclaringVariable = false; | |
| } | |
| break; | |
| case EOpAssign: | |
| writeTriplet(visit, "(", " = ", ")"); | |
| break; | |
| case EOpAddAssign: | |
| writeTriplet(visit, "(", " += ", ")"); | |
| break; | |
| case EOpSubAssign: | |
| writeTriplet(visit, "(", " -= ", ")"); | |
| break; | |
| case EOpDivAssign: | |
| writeTriplet(visit, "(", " /= ", ")"); | |
| break; | |
| case EOpIModAssign: | |
| writeTriplet(visit, "(", " %= ", ")"); | |
| break; | |
| // Notice the fall-through. | |
| case EOpMulAssign: | |
| case EOpVectorTimesMatrixAssign: | |
| case EOpVectorTimesScalarAssign: | |
| case EOpMatrixTimesScalarAssign: | |
| case EOpMatrixTimesMatrixAssign: | |
| writeTriplet(visit, "(", " *= ", ")"); | |
| break; | |
| case EOpBitShiftLeftAssign: | |
| writeTriplet(visit, "(", " <<= ", ")"); | |
| break; | |
| case EOpBitShiftRightAssign: | |
| writeTriplet(visit, "(", " >>= ", ")"); | |
| break; | |
| case EOpBitwiseAndAssign: | |
| writeTriplet(visit, "(", " &= ", ")"); | |
| break; | |
| case EOpBitwiseXorAssign: | |
| writeTriplet(visit, "(", " ^= ", ")"); | |
| break; | |
| case EOpBitwiseOrAssign: | |
| writeTriplet(visit, "(", " |= ", ")"); | |
| break; | |
| case EOpIndexDirect: | |
| writeTriplet(visit, nullptr, "[", "]"); | |
| break; | |
| case EOpIndexIndirect: | |
| if (node->getAddIndexClamp()) | |
| { | |
| if (visit == InVisit) | |
| { | |
| if (mClampingStrategy == SH_CLAMP_WITH_CLAMP_INTRINSIC) | |
| out << "[int(clamp(float("; | |
| else | |
| out << "[webgl_int_clamp("; | |
| } | |
| else if (visit == PostVisit) | |
| { | |
| TIntermTyped *left = node->getLeft(); | |
| TType leftType = left->getType(); | |
| if (mClampingStrategy == SH_CLAMP_WITH_CLAMP_INTRINSIC) | |
| out << "), 0.0, float("; | |
| else | |
| out << ", 0, "; | |
| if (leftType.isUnsizedArray()) | |
| { | |
| // For runtime-sized arrays in ESSL 3.10 we need to call the length method | |
| // to get the length to clamp against. See ESSL 3.10 section 4.1.9. Note | |
| // that a runtime-sized array expression is guaranteed not to have side | |
| // effects, so it's fine to add the expression to the output twice. | |
| ASSERT(mShaderVersion >= 310); | |
| ASSERT(!left->hasSideEffects()); | |
| left->traverse(this); | |
| out << ".length() - 1"; | |
| } | |
| else | |
| { | |
| int maxSize; | |
| if (leftType.isArray()) | |
| { | |
| maxSize = static_cast<int>(leftType.getOutermostArraySize()) - 1; | |
| } | |
| else | |
| { | |
| maxSize = leftType.getNominalSize() - 1; | |
| } | |
| out << maxSize; | |
| } | |
| if (mClampingStrategy == SH_CLAMP_WITH_CLAMP_INTRINSIC) | |
| out << ")))]"; | |
| else | |
| out << ")]"; | |
| } | |
| } | |
| else | |
| { | |
| writeTriplet(visit, nullptr, "[", "]"); | |
| } | |
| break; | |
| case EOpIndexDirectStruct: | |
| if (visit == InVisit) | |
| { | |
| // Here we are writing out "foo.bar", where "foo" is struct | |
| // and "bar" is field. In AST, it is represented as a binary | |
| // node, where left child represents "foo" and right child "bar". | |
| // The node itself represents ".". The struct field "bar" is | |
| // actually stored as an index into TStructure::fields. | |
| out << "."; | |
| const TStructure *structure = node->getLeft()->getType().getStruct(); | |
| const TIntermConstantUnion *index = node->getRight()->getAsConstantUnion(); | |
| const TField *field = structure->fields()[index->getIConst(0)]; | |
| out << hashFieldName(field); | |
| visitChildren = false; | |
| } | |
| break; | |
| case EOpIndexDirectInterfaceBlock: | |
| if (visit == InVisit) | |
| { | |
| out << "."; | |
| const TInterfaceBlock *interfaceBlock = | |
| node->getLeft()->getType().getInterfaceBlock(); | |
| const TIntermConstantUnion *index = node->getRight()->getAsConstantUnion(); | |
| const TField *field = interfaceBlock->fields()[index->getIConst(0)]; | |
| out << hashFieldName(field); | |
| visitChildren = false; | |
| } | |
| break; | |
| case EOpAdd: | |
| writeTriplet(visit, "(", " + ", ")"); | |
| break; | |
| case EOpSub: | |
| writeTriplet(visit, "(", " - ", ")"); | |
| break; | |
| case EOpMul: | |
| writeTriplet(visit, "(", " * ", ")"); | |
| break; | |
| case EOpDiv: | |
| writeTriplet(visit, "(", " / ", ")"); | |
| break; | |
| case EOpIMod: | |
| writeTriplet(visit, "(", " % ", ")"); | |
| break; | |
| case EOpBitShiftLeft: | |
| writeTriplet(visit, "(", " << ", ")"); | |
| break; | |
| case EOpBitShiftRight: | |
| writeTriplet(visit, "(", " >> ", ")"); | |
| break; | |
| case EOpBitwiseAnd: | |
| writeTriplet(visit, "(", " & ", ")"); | |
| break; | |
| case EOpBitwiseXor: | |
| writeTriplet(visit, "(", " ^ ", ")"); | |
| break; | |
| case EOpBitwiseOr: | |
| writeTriplet(visit, "(", " | ", ")"); | |
| break; | |
| case EOpEqual: | |
| writeTriplet(visit, "(", " == ", ")"); | |
| break; | |
| case EOpNotEqual: | |
| writeTriplet(visit, "(", " != ", ")"); | |
| break; | |
| case EOpLessThan: | |
| writeTriplet(visit, "(", " < ", ")"); | |
| break; | |
| case EOpGreaterThan: | |
| writeTriplet(visit, "(", " > ", ")"); | |
| break; | |
| case EOpLessThanEqual: | |
| writeTriplet(visit, "(", " <= ", ")"); | |
| break; | |
| case EOpGreaterThanEqual: | |
| writeTriplet(visit, "(", " >= ", ")"); | |
| break; | |
| // Notice the fall-through. | |
| case EOpVectorTimesScalar: | |
| case EOpVectorTimesMatrix: | |
| case EOpMatrixTimesVector: | |
| case EOpMatrixTimesScalar: | |
| case EOpMatrixTimesMatrix: | |
| writeTriplet(visit, "(", " * ", ")"); | |
| break; | |
| case EOpLogicalOr: | |
| writeTriplet(visit, "(", " || ", ")"); | |
| break; | |
| case EOpLogicalXor: | |
| writeTriplet(visit, "(", " ^^ ", ")"); | |
| break; | |
| case EOpLogicalAnd: | |
| writeTriplet(visit, "(", " && ", ")"); | |
| break; | |
| default: | |
| UNREACHABLE(); | |
| } | |
| return visitChildren; | |
| } | |
| bool TOutputGLSLBase::visitUnary(Visit visit, TIntermUnary *node) | |
| { | |
| const char *preString = ""; | |
| const char *postString = ")"; | |
| switch (node->getOp()) | |
| { | |
| case EOpNegative: | |
| preString = "(-"; | |
| break; | |
| case EOpPositive: | |
| preString = "(+"; | |
| break; | |
| case EOpLogicalNot: | |
| preString = "(!"; | |
| break; | |
| case EOpBitwiseNot: | |
| preString = "(~"; | |
| break; | |
| case EOpPostIncrement: | |
| preString = "("; | |
| postString = "++)"; | |
| break; | |
| case EOpPostDecrement: | |
| preString = "("; | |
| postString = "--)"; | |
| break; | |
| case EOpPreIncrement: | |
| preString = "(++"; | |
| break; | |
| case EOpPreDecrement: | |
| preString = "(--"; | |
| break; | |
| case EOpArrayLength: | |
| preString = "(("; | |
| postString = ").length())"; | |
| break; | |
| case EOpRadians: | |
| case EOpDegrees: | |
| case EOpSin: | |
| case EOpCos: | |
| case EOpTan: | |
| case EOpAsin: | |
| case EOpAcos: | |
| case EOpAtan: | |
| case EOpSinh: | |
| case EOpCosh: | |
| case EOpTanh: | |
| case EOpAsinh: | |
| case EOpAcosh: | |
| case EOpAtanh: | |
| case EOpExp: | |
| case EOpLog: | |
| case EOpExp2: | |
| case EOpLog2: | |
| case EOpSqrt: | |
| case EOpInversesqrt: | |
| case EOpAbs: | |
| case EOpSign: | |
| case EOpFloor: | |
| case EOpTrunc: | |
| case EOpRound: | |
| case EOpRoundEven: | |
| case EOpCeil: | |
| case EOpFract: | |
| case EOpIsnan: | |
| case EOpIsinf: | |
| case EOpFloatBitsToInt: | |
| case EOpFloatBitsToUint: | |
| case EOpIntBitsToFloat: | |
| case EOpUintBitsToFloat: | |
| case EOpPackSnorm2x16: | |
| case EOpPackUnorm2x16: | |
| case EOpPackHalf2x16: | |
| case EOpUnpackSnorm2x16: | |
| case EOpUnpackUnorm2x16: | |
| case EOpUnpackHalf2x16: | |
| case EOpPackUnorm4x8: | |
| case EOpPackSnorm4x8: | |
| case EOpUnpackUnorm4x8: | |
| case EOpUnpackSnorm4x8: | |
| case EOpLength: | |
| case EOpNormalize: | |
| case EOpDFdx: | |
| case EOpDFdy: | |
| case EOpFwidth: | |
| case EOpTranspose: | |
| case EOpDeterminant: | |
| case EOpInverse: | |
| case EOpAny: | |
| case EOpAll: | |
| case EOpLogicalNotComponentWise: | |
| case EOpBitfieldReverse: | |
| case EOpBitCount: | |
| case EOpFindLSB: | |
| case EOpFindMSB: | |
| writeBuiltInFunctionTriplet(visit, node->getOp(), node->getUseEmulatedFunction()); | |
| return true; | |
| default: | |
| UNREACHABLE(); | |
| } | |
| writeTriplet(visit, preString, nullptr, postString); | |
| return true; | |
| } | |
| bool TOutputGLSLBase::visitTernary(Visit visit, TIntermTernary *node) | |
| { | |
| TInfoSinkBase &out = objSink(); | |
| // Notice two brackets at the beginning and end. The outer ones | |
| // encapsulate the whole ternary expression. This preserves the | |
| // order of precedence when ternary expressions are used in a | |
| // compound expression, i.e., c = 2 * (a < b ? 1 : 2). | |
| out << "(("; | |
| node->getCondition()->traverse(this); | |
| out << ") ? ("; | |
| node->getTrueExpression()->traverse(this); | |
| out << ") : ("; | |
| node->getFalseExpression()->traverse(this); | |
| out << "))"; | |
| return false; | |
| } | |
| bool TOutputGLSLBase::visitIfElse(Visit visit, TIntermIfElse *node) | |
| { | |
| TInfoSinkBase &out = objSink(); | |
| out << "if ("; | |
| node->getCondition()->traverse(this); | |
| out << ")\n"; | |
| visitCodeBlock(node->getTrueBlock()); | |
| if (node->getFalseBlock()) | |
| { | |
| out << "else\n"; | |
| visitCodeBlock(node->getFalseBlock()); | |
| } | |
| return false; | |
| } | |
| bool TOutputGLSLBase::visitSwitch(Visit visit, TIntermSwitch *node) | |
| { | |
| ASSERT(node->getStatementList()); | |
| writeTriplet(visit, "switch (", ") ", nullptr); | |
| // The curly braces get written when visiting the statementList aggregate | |
| return true; | |
| } | |
| bool TOutputGLSLBase::visitCase(Visit visit, TIntermCase *node) | |
| { | |
| if (node->hasCondition()) | |
| { | |
| writeTriplet(visit, "case (", nullptr, "):\n"); | |
| return true; | |
| } | |
| else | |
| { | |
| TInfoSinkBase &out = objSink(); | |
| out << "default:\n"; | |
| return false; | |
| } | |
| } | |
| bool TOutputGLSLBase::visitBlock(Visit visit, TIntermBlock *node) | |
| { | |
| TInfoSinkBase &out = objSink(); | |
| // Scope the blocks except when at the global scope. | |
| if (getCurrentTraversalDepth() > 0) | |
| { | |
| out << "{\n"; | |
| } | |
| for (TIntermSequence::const_iterator iter = node->getSequence()->begin(); | |
| iter != node->getSequence()->end(); ++iter) | |
| { | |
| TIntermNode *curNode = *iter; | |
| ASSERT(curNode != nullptr); | |
| curNode->traverse(this); | |
| if (isSingleStatement(curNode)) | |
| out << ";\n"; | |
| } | |
| // Scope the blocks except when at the global scope. | |
| if (getCurrentTraversalDepth() > 0) | |
| { | |
| out << "}\n"; | |
| } | |
| return false; | |
| } | |
| bool TOutputGLSLBase::visitFunctionDefinition(Visit visit, TIntermFunctionDefinition *node) | |
| { | |
| TIntermFunctionPrototype *prototype = node->getFunctionPrototype(); | |
| prototype->traverse(this); | |
| visitCodeBlock(node->getBody()); | |
| // Fully processed; no need to visit children. | |
| return false; | |
| } | |
| bool TOutputGLSLBase::visitInvariantDeclaration(Visit visit, TIntermInvariantDeclaration *node) | |
| { | |
| TInfoSinkBase &out = objSink(); | |
| ASSERT(visit == PreVisit); | |
| const TIntermSymbol *symbol = node->getSymbol(); | |
| out << "invariant " << hashName(&symbol->variable()); | |
| return false; | |
| } | |
| void TOutputGLSLBase::visitFunctionPrototype(TIntermFunctionPrototype *node) | |
| { | |
| TInfoSinkBase &out = objSink(); | |
| const TType &type = node->getType(); | |
| writeVariableType(type, node->getFunction()); | |
| if (type.isArray()) | |
| out << ArrayString(type); | |
| out << " " << hashFunctionNameIfNeeded(node->getFunction()); | |
| out << "("; | |
| writeFunctionParameters(node->getFunction()); | |
| out << ")"; | |
| } | |
| bool TOutputGLSLBase::visitAggregate(Visit visit, TIntermAggregate *node) | |
| { | |
| bool visitChildren = true; | |
| TInfoSinkBase &out = objSink(); | |
| switch (node->getOp()) | |
| { | |
| case EOpCallFunctionInAST: | |
| case EOpCallInternalRawFunction: | |
| case EOpCallBuiltInFunction: | |
| // Function call. | |
| if (visit == PreVisit) | |
| { | |
| if (node->getOp() == EOpCallBuiltInFunction) | |
| { | |
| out << translateTextureFunction(node->getFunction()->name()); | |
| } | |
| else | |
| { | |
| out << hashFunctionNameIfNeeded(node->getFunction()); | |
| } | |
| out << "("; | |
| } | |
| else if (visit == InVisit) | |
| out << ", "; | |
| else | |
| out << ")"; | |
| break; | |
| case EOpConstruct: | |
| writeConstructorTriplet(visit, node->getType()); | |
| break; | |
| case EOpEqualComponentWise: | |
| case EOpNotEqualComponentWise: | |
| case EOpLessThanComponentWise: | |
| case EOpGreaterThanComponentWise: | |
| case EOpLessThanEqualComponentWise: | |
| case EOpGreaterThanEqualComponentWise: | |
| case EOpMod: | |
| case EOpModf: | |
| case EOpPow: | |
| case EOpAtan: | |
| case EOpMin: | |
| case EOpMax: | |
| case EOpClamp: | |
| case EOpMix: | |
| case EOpStep: | |
| case EOpSmoothstep: | |
| case EOpFrexp: | |
| case EOpLdexp: | |
| case EOpDistance: | |
| case EOpDot: | |
| case EOpCross: | |
| case EOpFaceforward: | |
| case EOpReflect: | |
| case EOpRefract: | |
| case EOpMulMatrixComponentWise: | |
| case EOpOuterProduct: | |
| case EOpBitfieldExtract: | |
| case EOpBitfieldInsert: | |
| case EOpUaddCarry: | |
| case EOpUsubBorrow: | |
| case EOpUmulExtended: | |
| case EOpImulExtended: | |
| case EOpBarrier: | |
| case EOpMemoryBarrier: | |
| case EOpMemoryBarrierAtomicCounter: | |
| case EOpMemoryBarrierBuffer: | |
| case EOpMemoryBarrierImage: | |
| case EOpMemoryBarrierShared: | |
| case EOpGroupMemoryBarrier: | |
| case EOpAtomicAdd: | |
| case EOpAtomicMin: | |
| case EOpAtomicMax: | |
| case EOpAtomicAnd: | |
| case EOpAtomicOr: | |
| case EOpAtomicXor: | |
| case EOpAtomicExchange: | |
| case EOpAtomicCompSwap: | |
| case EOpEmitVertex: | |
| case EOpEndPrimitive: | |
| writeBuiltInFunctionTriplet(visit, node->getOp(), node->getUseEmulatedFunction()); | |
| break; | |
| default: | |
| UNREACHABLE(); | |
| } | |
| return visitChildren; | |
| } | |
| bool TOutputGLSLBase::visitDeclaration(Visit visit, TIntermDeclaration *node) | |
| { | |
| TInfoSinkBase &out = objSink(); | |
| // Variable declaration. | |
| if (visit == PreVisit) | |
| { | |
| const TIntermSequence &sequence = *(node->getSequence()); | |
| TIntermTyped *variable = sequence.front()->getAsTyped(); | |
| writeLayoutQualifier(variable); | |
| TIntermSymbol *symbolNode = variable->getAsSymbolNode(); | |
| writeVariableType(variable->getType(), symbolNode ? &symbolNode->variable() : nullptr); | |
| if (variable->getAsSymbolNode() == nullptr || | |
| variable->getAsSymbolNode()->variable().symbolType() != SymbolType::Empty) | |
| { | |
| out << " "; | |
| } | |
| mDeclaringVariable = true; | |
| } | |
| else if (visit == InVisit) | |
| { | |
| UNREACHABLE(); | |
| } | |
| else | |
| { | |
| mDeclaringVariable = false; | |
| } | |
| return true; | |
| } | |
| bool TOutputGLSLBase::visitLoop(Visit visit, TIntermLoop *node) | |
| { | |
| TInfoSinkBase &out = objSink(); | |
| TLoopType loopType = node->getType(); | |
| if (loopType == ELoopFor) // for loop | |
| { | |
| out << "for ("; | |
| if (node->getInit()) | |
| node->getInit()->traverse(this); | |
| out << "; "; | |
| if (node->getCondition()) | |
| node->getCondition()->traverse(this); | |
| out << "; "; | |
| if (node->getExpression()) | |
| node->getExpression()->traverse(this); | |
| out << ")\n"; | |
| visitCodeBlock(node->getBody()); | |
| } | |
| else if (loopType == ELoopWhile) // while loop | |
| { | |
| out << "while ("; | |
| ASSERT(node->getCondition() != nullptr); | |
| node->getCondition()->traverse(this); | |
| out << ")\n"; | |
| visitCodeBlock(node->getBody()); | |
| } | |
| else // do-while loop | |
| { | |
| ASSERT(loopType == ELoopDoWhile); | |
| out << "do\n"; | |
| visitCodeBlock(node->getBody()); | |
| out << "while ("; | |
| ASSERT(node->getCondition() != nullptr); | |
| node->getCondition()->traverse(this); | |
| out << ");\n"; | |
| } | |
| // No need to visit children. They have been already processed in | |
| // this function. | |
| return false; | |
| } | |
| bool TOutputGLSLBase::visitBranch(Visit visit, TIntermBranch *node) | |
| { | |
| switch (node->getFlowOp()) | |
| { | |
| case EOpKill: | |
| writeTriplet(visit, "discard", nullptr, nullptr); | |
| break; | |
| case EOpBreak: | |
| writeTriplet(visit, "break", nullptr, nullptr); | |
| break; | |
| case EOpContinue: | |
| writeTriplet(visit, "continue", nullptr, nullptr); | |
| break; | |
| case EOpReturn: | |
| writeTriplet(visit, "return ", nullptr, nullptr); | |
| break; | |
| default: | |
| UNREACHABLE(); | |
| } | |
| return true; | |
| } | |
| void TOutputGLSLBase::visitCodeBlock(TIntermBlock *node) | |
| { | |
| TInfoSinkBase &out = objSink(); | |
| if (node != nullptr) | |
| { | |
| node->traverse(this); | |
| // Single statements not part of a sequence need to be terminated | |
| // with semi-colon. | |
| if (isSingleStatement(node)) | |
| out << ";\n"; | |
| } | |
| else | |
| { | |
| out << "{\n}\n"; // Empty code block. | |
| } | |
| } | |
| void TOutputGLSLBase::visitPreprocessorDirective(TIntermPreprocessorDirective *node) | |
| { | |
| TInfoSinkBase &out = objSink(); | |
| out << "\n"; | |
| switch (node->getDirective()) | |
| { | |
| case PreprocessorDirective::Define: | |
| out << "#define"; | |
| break; | |
| case PreprocessorDirective::Endif: | |
| out << "#endif"; | |
| break; | |
| case PreprocessorDirective::If: | |
| out << "#if"; | |
| break; | |
| case PreprocessorDirective::Ifdef: | |
| out << "#ifdef"; | |
| break; | |
| default: | |
| UNREACHABLE(); | |
| break; | |
| } | |
| if (!node->getCommand().empty()) | |
| { | |
| out << " " << node->getCommand(); | |
| } | |
| out << "\n"; | |
| } | |
| ImmutableString TOutputGLSLBase::getTypeName(const TType &type) | |
| { | |
| return GetTypeName(type, mHashFunction, &mNameMap); | |
| } | |
| ImmutableString TOutputGLSLBase::hashName(const TSymbol *symbol) | |
| { | |
| return HashName(symbol, mHashFunction, &mNameMap); | |
| } | |
| ImmutableString TOutputGLSLBase::hashFieldName(const TField *field) | |
| { | |
| ASSERT(field->symbolType() != SymbolType::Empty); | |
| if (field->symbolType() == SymbolType::UserDefined) | |
| { | |
| return HashName(field->name(), mHashFunction, &mNameMap); | |
| } | |
| return field->name(); | |
| } | |
| ImmutableString TOutputGLSLBase::hashFunctionNameIfNeeded(const TFunction *func) | |
| { | |
| if (func->isMain()) | |
| { | |
| return func->name(); | |
| } | |
| else | |
| { | |
| return hashName(func); | |
| } | |
| } | |
| bool TOutputGLSLBase::structDeclared(const TStructure *structure) const | |
| { | |
| ASSERT(structure); | |
| if (structure->symbolType() == SymbolType::Empty) | |
| { | |
| return false; | |
| } | |
| return (mDeclaredStructs.count(structure->uniqueId().get()) > 0); | |
| } | |
| void TOutputGLSLBase::declareStruct(const TStructure *structure) | |
| { | |
| TInfoSinkBase &out = objSink(); | |
| out << "struct "; | |
| if (structure->symbolType() != SymbolType::Empty) | |
| { | |
| out << hashName(structure) << " "; | |
| } | |
| out << "{\n"; | |
| const TFieldList &fields = structure->fields(); | |
| for (size_t i = 0; i < fields.size(); ++i) | |
| { | |
| const TField *field = fields[i]; | |
| if (writeVariablePrecision(field->type()->getPrecision())) | |
| out << " "; | |
| out << getTypeName(*field->type()) << " " << hashFieldName(field); | |
| if (field->type()->isArray()) | |
| out << ArrayString(*field->type()); | |
| out << ";\n"; | |
| } | |
| out << "}"; | |
| if (structure->symbolType() != SymbolType::Empty) | |
| { | |
| mDeclaredStructs.insert(structure->uniqueId().get()); | |
| } | |
| } | |
| void TOutputGLSLBase::declareInterfaceBlockLayout(const TInterfaceBlock *interfaceBlock) | |
| { | |
| TInfoSinkBase &out = objSink(); | |
| out << "layout("; | |
| switch (interfaceBlock->blockStorage()) | |
| { | |
| case EbsUnspecified: | |
| case EbsShared: | |
| // Default block storage is shared. | |
| out << "shared"; | |
| break; | |
| case EbsPacked: | |
| out << "packed"; | |
| break; | |
| case EbsStd140: | |
| out << "std140"; | |
| break; | |
| case EbsStd430: | |
| out << "std430"; | |
| break; | |
| default: | |
| UNREACHABLE(); | |
| break; | |
| } | |
| if (interfaceBlock->blockBinding() >= 0) | |
| { | |
| out << ", "; | |
| out << "binding = " << interfaceBlock->blockBinding(); | |
| } | |
| out << ") "; | |
| } | |
| void TOutputGLSLBase::declareInterfaceBlock(const TInterfaceBlock *interfaceBlock) | |
| { | |
| TInfoSinkBase &out = objSink(); | |
| out << hashName(interfaceBlock) << "{\n"; | |
| const TFieldList &fields = interfaceBlock->fields(); | |
| for (const TField *field : fields) | |
| { | |
| if (field->type()->isMatrix() || field->type()->isStructureContainingMatrices()) | |
| { | |
| out << "layout("; | |
| switch (field->type()->getLayoutQualifier().matrixPacking) | |
| { | |
| case EmpUnspecified: | |
| case EmpColumnMajor: | |
| // Default matrix packing is column major. | |
| out << "column_major"; | |
| break; | |
| case EmpRowMajor: | |
| out << "row_major"; | |
| break; | |
| default: | |
| UNREACHABLE(); | |
| break; | |
| } | |
| out << ") "; | |
| } | |
| if (writeVariablePrecision(field->type()->getPrecision())) | |
| out << " "; | |
| out << getTypeName(*field->type()) << " " << hashFieldName(field); | |
| if (field->type()->isArray()) | |
| out << ArrayString(*field->type()); | |
| out << ";\n"; | |
| } | |
| out << "}"; | |
| } | |
| void WriteGeometryShaderLayoutQualifiers(TInfoSinkBase &out, | |
| sh::TLayoutPrimitiveType inputPrimitive, | |
| int invocations, | |
| sh::TLayoutPrimitiveType outputPrimitive, | |
| int maxVertices) | |
| { | |
| // Omit 'invocations = 1' | |
| if (inputPrimitive != EptUndefined || invocations > 1) | |
| { | |
| out << "layout ("; | |
| if (inputPrimitive != EptUndefined) | |
| { | |
| out << getGeometryShaderPrimitiveTypeString(inputPrimitive); | |
| } | |
| if (invocations > 1) | |
| { | |
| if (inputPrimitive != EptUndefined) | |
| { | |
| out << ", "; | |
| } | |
| out << "invocations = " << invocations; | |
| } | |
| out << ") in;\n"; | |
| } | |
| if (outputPrimitive != EptUndefined || maxVertices != -1) | |
| { | |
| out << "layout ("; | |
| if (outputPrimitive != EptUndefined) | |
| { | |
| out << getGeometryShaderPrimitiveTypeString(outputPrimitive); | |
| } | |
| if (maxVertices != -1) | |
| { | |
| if (outputPrimitive != EptUndefined) | |
| { | |
| out << ", "; | |
| } | |
| out << "max_vertices = " << maxVertices; | |
| } | |
| out << ") out;\n"; | |
| } | |
| } | |
| // If SH_SCALARIZE_VEC_AND_MAT_CONSTRUCTOR_ARGS is enabled, layout qualifiers are spilled whenever | |
| // variables with specified layout qualifiers are copied. Additional checks are needed against the | |
| // type and storage qualifier of the variable to verify that layout qualifiers have to be outputted. | |
| // TODO (mradev): Fix layout qualifier spilling in ScalarizeVecAndMatConstructorArgs and remove | |
| // NeedsToWriteLayoutQualifier. | |
| bool NeedsToWriteLayoutQualifier(const TType &type) | |
| { | |
| if (type.getBasicType() == EbtInterfaceBlock) | |
| { | |
| return true; | |
| } | |
| const TLayoutQualifier &layoutQualifier = type.getLayoutQualifier(); | |
| if ((type.getQualifier() == EvqFragmentOut || type.getQualifier() == EvqVertexIn || | |
| IsVarying(type.getQualifier())) && | |
| layoutQualifier.location >= 0) | |
| { | |
| return true; | |
| } | |
| if (type.getQualifier() == EvqFragmentOut && layoutQualifier.yuv == true) | |
| { | |
| return true; | |
| } | |
| if (IsOpaqueType(type.getBasicType()) && layoutQualifier.binding != -1) | |
| { | |
| return true; | |
| } | |
| if (IsImage(type.getBasicType()) && layoutQualifier.imageInternalFormat != EiifUnspecified) | |
| { | |
| return true; | |
| } | |
| return false; | |
| } | |
| } // namespace sh |