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//
// 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.
//
#ifndef COMPILER_OUTPUTHLSL_H_
#define COMPILER_OUTPUTHLSL_H_
#include <list>
#include <set>
#include <map>
#include <GLES3/gl3.h>
#include <GLES2/gl2.h>
#include "compiler/translator/intermediate.h"
#include "compiler/translator/ParseContext.h"
#include "common/shadervars.h"
namespace sh
{
class UnfoldShortCircuit;
class OutputHLSL : public TIntermTraverser
{
public:
OutputHLSL(TParseContext &context, const ShBuiltInResources& resources, ShShaderOutput outputType);
~OutputHLSL();
void output();
TInfoSinkBase &getBodyStream();
const std::vector<gl::Uniform> &getUniforms();
const std::vector<gl::InterfaceBlock> &getInterfaceBlocks() const;
const std::vector<gl::Attribute> &getOutputVariables() const;
const std::vector<gl::Attribute> &getAttributes() const;
const std::vector<gl::Varying> &getVaryings() const;
TString typeString(const TType &type);
TString textureString(const TType &type);
TString samplerString(const TType &type);
TString interpolationString(TQualifier qualifier);
TString structureString(const TStructure &structure, bool useHLSLRowMajorPacking, bool useStd140Packing);
TString structureTypeName(const TStructure &structure, bool useHLSLRowMajorPacking, bool useStd140Packing);
static TString qualifierString(TQualifier qualifier);
static TString arrayString(const TType &type);
static TString initializer(const TType &type);
static TString decorate(const TString &string); // Prepends an underscore to avoid naming clashes
static TString decorateUniform(const TString &string, const TType &type);
static TString decorateField(const TString &string, const TStructure &structure);
protected:
void header();
// Visit AST nodes and output their code to the body stream
void visitSymbol(TIntermSymbol*);
void visitConstantUnion(TIntermConstantUnion*);
bool visitBinary(Visit visit, TIntermBinary*);
bool visitUnary(Visit visit, TIntermUnary*);
bool visitSelection(Visit visit, TIntermSelection*);
bool visitAggregate(Visit visit, TIntermAggregate*);
bool visitLoop(Visit visit, TIntermLoop*);
bool visitBranch(Visit visit, TIntermBranch*);
void traverseStatements(TIntermNode *node);
bool isSingleStatement(TIntermNode *node);
bool handleExcessiveLoop(TIntermLoop *node);
void outputTriplet(Visit visit, const TString &preString, const TString &inString, const TString &postString);
void outputLineDirective(int line);
TString argumentString(const TIntermSymbol *symbol);
int vectorSize(const TType &type) const;
void addConstructor(const TType &type, const TString &name, const TIntermSequence *parameters);
const ConstantUnion *writeConstantUnion(const TType &type, const ConstantUnion *constUnion);
TString scopeString(unsigned int depthLimit);
TString scopedStruct(const TString &typeName);
TString structLookup(const TString &typeName);
TParseContext &mContext;
const ShShaderOutput mOutputType;
UnfoldShortCircuit *mUnfoldShortCircuit;
bool mInsideFunction;
// Output streams
TInfoSinkBase mHeader;
TInfoSinkBase mBody;
TInfoSinkBase mFooter;
typedef std::map<TString, TIntermSymbol*> ReferencedSymbols;
ReferencedSymbols mReferencedUniforms;
ReferencedSymbols mReferencedInterfaceBlocks;
ReferencedSymbols mReferencedAttributes;
ReferencedSymbols mReferencedVaryings;
ReferencedSymbols mReferencedOutputVariables;
struct TextureFunction
{
enum Method
{
IMPLICIT, // Mipmap LOD determined implicitly (standard lookup)
BIAS,
LOD,
LOD0,
LOD0BIAS,
SIZE, // textureSize()
FETCH,
GRAD
};
TBasicType sampler;
int coords;
bool proj;
bool offset;
Method method;
TString name() const;
bool operator<(const TextureFunction &rhs) const;
};
typedef std::set<TextureFunction> TextureFunctionSet;
// Parameters determining what goes in the header output
TextureFunctionSet mUsesTexture;
bool mUsesFragColor;
bool mUsesFragData;
bool mUsesDepthRange;
bool mUsesFragCoord;
bool mUsesPointCoord;
bool mUsesFrontFacing;
bool mUsesPointSize;
bool mUsesFragDepth;
bool mUsesXor;
bool mUsesMod1;
bool mUsesMod2v;
bool mUsesMod2f;
bool mUsesMod3v;
bool mUsesMod3f;
bool mUsesMod4v;
bool mUsesMod4f;
bool mUsesFaceforward1;
bool mUsesFaceforward2;
bool mUsesFaceforward3;
bool mUsesFaceforward4;
bool mUsesAtan2_1;
bool mUsesAtan2_2;
bool mUsesAtan2_3;
bool mUsesAtan2_4;
bool mUsesDiscardRewriting;
bool mUsesNestedBreak;
int mNumRenderTargets;
typedef std::set<TString> Constructors;
Constructors mConstructors;
typedef std::set<TString> StructNames;
StructNames mStructNames;
typedef std::list<TString> StructDeclarations;
StructDeclarations mStructDeclarations;
typedef std::vector<int> ScopeBracket;
ScopeBracket mScopeBracket;
unsigned int mScopeDepth;
int mUniqueIndex; // For creating unique names
bool mContainsLoopDiscontinuity;
bool mOutputLod0Function;
bool mInsideDiscontinuousLoop;
int mNestedLoopDepth;
TIntermSymbol *mExcessiveLoopIndex;
int mUniformRegister;
int mInterfaceBlockRegister;
int mSamplerRegister;
int mPaddingCounter;
TString registerString(TIntermSymbol *operand);
int samplerRegister(TIntermSymbol *sampler);
int uniformRegister(TIntermSymbol *uniform);
void declareInterfaceBlockField(const TType &type, const TString &name, std::vector<gl::InterfaceBlockField>& output);
gl::Uniform declareUniformToList(const TType &type, const TString &name, int registerIndex, std::vector<gl::Uniform>& output);
void declareUniform(const TType &type, const TString &name, int index);
void declareVaryingToList(const TType &type, TQualifier baseTypeQualifier, const TString &name, std::vector<gl::Varying>& fieldsOut);
// Returns the uniform's register index
int declareUniformAndAssignRegister(const TType &type, const TString &name);
TString interfaceBlockFieldString(const TInterfaceBlock &interfaceBlock, const TField &field);
TString decoratePrivate(const TString &privateText);
TString interfaceBlockStructNameString(const TInterfaceBlock &interfaceBlockType);
TString interfaceBlockInstanceString(const TInterfaceBlock& interfaceBlock, unsigned int arrayIndex);
TString interfaceBlockFieldTypeString(const TField &field, TLayoutBlockStorage blockStorage);
TString interfaceBlockFieldString(const TInterfaceBlock &interfaceBlock, TLayoutBlockStorage blockStorage);
TString interfaceBlockStructString(const TInterfaceBlock &interfaceBlock);
TString interfaceBlockString(const TInterfaceBlock &interfaceBlock, unsigned int registerIndex, unsigned int arrayIndex);
TString std140PrePaddingString(const TType &type, int *elementIndex);
TString std140PostPaddingString(const TType &type, bool useHLSLRowMajorPacking);
TString structInitializerString(int indent, const TStructure &structure, const TString &rhsStructName);
static GLenum glVariableType(const TType &type);
static GLenum glVariablePrecision(const TType &type);
static bool isVaryingIn(TQualifier qualifier);
static bool isVaryingOut(TQualifier qualifier);
static bool isVarying(TQualifier qualifier);
std::vector<gl::Uniform> mActiveUniforms;
std::vector<gl::InterfaceBlock> mActiveInterfaceBlocks;
std::vector<gl::Attribute> mActiveOutputVariables;
std::vector<gl::Attribute> mActiveAttributes;
std::vector<gl::Varying> mActiveVaryings;
std::map<TString, int> mStd140StructElementIndexes;
std::map<TIntermTyped*, TString> mFlaggedStructMappedNames;
std::map<TIntermTyped*, TString> mFlaggedStructOriginalNames;
void makeFlaggedStructMaps(const std::vector<TIntermTyped *> &flaggedStructs);
};
}
#endif // COMPILER_OUTPUTHLSL_H_
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