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//
// Copyright 2002 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.
//
#ifndef COMPILER_TRANSLATOR_OUTPUTGLSLBASE_H_
#define COMPILER_TRANSLATOR_OUTPUTGLSLBASE_H_
#include <set>
#include "compiler/translator/ExtensionBehavior.h"
#include "compiler/translator/HashNames.h"
#include "compiler/translator/InfoSink.h"
#include "compiler/translator/Pragma.h"
#include "compiler/translator/tree_util/IntermTraverse.h"
namespace sh
{
class TCompiler;
class TOutputGLSLBase : public TIntermTraverser
{
public:
TOutputGLSLBase(TCompiler *compiler,
TInfoSinkBase &objSink,
const ShCompileOptions &compileOptions);
ShShaderOutput getShaderOutput() const { return mOutput; }
// Return the original name if hash function pointer is NULL;
// otherwise return the hashed name. Has special handling for internal names and built-ins,
// which are not hashed.
ImmutableString hashName(const TSymbol *symbol);
protected:
TInfoSinkBase &objSink() { return mObjSink; }
void writeFloat(TInfoSinkBase &out, float f);
void writeTriplet(Visit visit, const char *preStr, const char *inStr, const char *postStr);
std::string getCommonLayoutQualifiers(TIntermSymbol *variable);
std::string getMemoryQualifiers(const TType &type);
virtual void writeLayoutQualifier(TIntermSymbol *variable);
void writeFieldLayoutQualifier(const TField *field);
void writeInvariantQualifier(const TType &type);
void writePreciseQualifier(const TType &type);
virtual void writeVariableType(const TType &type,
const TSymbol *symbol,
bool isFunctionArgument);
virtual bool writeVariablePrecision(TPrecision precision) = 0;
void writeFunctionParameters(const TFunction *func);
const TConstantUnion *writeConstantUnion(const TType &type, const TConstantUnion *pConstUnion);
void writeConstructorTriplet(Visit visit, const TType &type);
ImmutableString getTypeName(const TType &type);
void visitSymbol(TIntermSymbol *node) override;
void visitConstantUnion(TIntermConstantUnion *node) override;
bool visitSwizzle(Visit visit, TIntermSwizzle *node) override;
bool visitBinary(Visit visit, TIntermBinary *node) override;
bool visitUnary(Visit visit, TIntermUnary *node) override;
bool visitTernary(Visit visit, TIntermTernary *node) override;
bool visitIfElse(Visit visit, TIntermIfElse *node) override;
bool visitSwitch(Visit visit, TIntermSwitch *node) override;
bool visitCase(Visit visit, TIntermCase *node) override;
void visitFunctionPrototype(TIntermFunctionPrototype *node) override;
bool visitFunctionDefinition(Visit visit, TIntermFunctionDefinition *node) override;
bool visitAggregate(Visit visit, TIntermAggregate *node) override;
bool visitBlock(Visit visit, TIntermBlock *node) override;
bool visitGlobalQualifierDeclaration(Visit visit,
TIntermGlobalQualifierDeclaration *node) override;
bool visitDeclaration(Visit visit, TIntermDeclaration *node) override;
bool visitLoop(Visit visit, TIntermLoop *node) override;
bool visitBranch(Visit visit, TIntermBranch *node) override;
void visitPreprocessorDirective(TIntermPreprocessorDirective *node) override;
void visitCodeBlock(TIntermBlock *node);
ImmutableString hashFieldName(const TField *field);
// Same as hashName(), but without hashing "main".
ImmutableString hashFunctionNameIfNeeded(const TFunction *func);
// Used to translate function names for differences between ESSL and GLSL
virtual ImmutableString translateTextureFunction(const ImmutableString &name,
const ShCompileOptions &option)
{
return name;
}
void declareStruct(const TStructure *structure);
void writeQualifier(TQualifier qualifier, const TType &type, const TSymbol *symbol);
const char *mapQualifierToString(TQualifier qualifier);
sh::GLenum getShaderType() const { return mShaderType; }
bool isHighPrecisionSupported() const { return mHighPrecisionSupported; }
const char *getIndentPrefix(int extraIndentDepth = 0);
bool needsToWriteLayoutQualifier(const TType &type);
private:
void declareInterfaceBlockLayout(const TType &type);
void declareInterfaceBlock(const TType &type);
void writeFunctionTriplet(Visit visit,
const ImmutableString &functionName,
bool useEmulatedFunction);
TInfoSinkBase &mObjSink;
bool mDeclaringVariable;
// name hashing.
ShHashFunction64 mHashFunction;
NameMap &mNameMap;
sh::GLenum mShaderType;
const int mShaderVersion;
ShShaderOutput mOutput;
bool mHighPrecisionSupported;
// Emit "layout(locaton = 0)" for fragment outputs whose location is unspecified. This is for
// transformations like pixel local storage, where new outputs are introduced to the shader, and
// previously valid fragment outputs with an implicit location of 0 are now required to specify
// their location.
bool mAlwaysSpecifyFragOutLocation;
const ShCompileOptions &mCompileOptions;
};
void WritePragma(TInfoSinkBase &out, const ShCompileOptions &compileOptions, const TPragma &pragma);
void WriteGeometryShaderLayoutQualifiers(TInfoSinkBase &out,
sh::TLayoutPrimitiveType inputPrimitive,
int invocations,
sh::TLayoutPrimitiveType outputPrimitive,
int maxVertices);
void WriteTessControlShaderLayoutQualifiers(TInfoSinkBase &out, int inputVertices);
void WriteTessEvaluationShaderLayoutQualifiers(TInfoSinkBase &out,
sh::TLayoutTessEvaluationType inputPrimitive,
sh::TLayoutTessEvaluationType inputVertexSpacing,
sh::TLayoutTessEvaluationType inputOrdering,
sh::TLayoutTessEvaluationType inputPoint);
void EmitEarlyFragmentTestsGLSL(const TCompiler &, TInfoSinkBase &sink);
void EmitWorkGroupSizeGLSL(const TCompiler &, TInfoSinkBase &sink);
void EmitMultiviewGLSL(const TCompiler &,
const ShCompileOptions &,
const TExtension,
const TBehavior,
TInfoSinkBase &sink);
} // namespace sh
#endif // COMPILER_TRANSLATOR_OUTPUTGLSLBASE_H_
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