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// Geometric Tools, LLC
// Copyright (c) 1998-2014
// Distributed under the Boost Software License, Version 1.0.
// http://www.boost.org/LICENSE_1_0.txt
// http://www.geometrictools.com/License/Boost/LICENSE_1_0.txt
//
// File Version: 5.0.1 (2010/04/14)
#ifndef FXCOMPILER_H
#define FXCOMPILER_H
#include "Wm5VisualEffect.h"
using namespace Wm5;
class FxCompiler
{
public:
// Construction and destruction. There are times that special profiles
// are needed that require running cgc manually to produce the compiled
// shaders. In this case, 'alreadyCompiled' should be set to 'true'
// so that FxCompiler skips the compilation phase. It will still load
// the compiled files and create a *.wmfx file.
FxCompiler (const std::string& fxName, bool alreadyCompiled = false);
~FxCompiler ();
std::vector<std::string> Messages;
private:
typedef std::vector<std::string> TokenArray;
typedef std::vector<TokenArray> TokenArrays;
class Program
{
public:
Program ();
std::string Name;
std::string Text;
TokenArrays Variables;
};
class Input
{
public:
std::string Name;
Shader::VariableType Type;
Shader::VariableSemantic Semantic;
};
typedef std::vector<Input> InputArray;
class Output
{
public:
std::string Name;
Shader::VariableType Type;
Shader::VariableSemantic Semantic;
};
typedef std::vector<Output> OutputArray;
class Constant
{
public:
std::string Name;
Shader::VariableType Type;
int BaseRegister;
int NumRegistersUsed;
};
typedef std::vector<Constant> ConstantArray;
class Sampler
{
public:
std::string Name;
Shader::SamplerType Type;
int Unit;
Shader::SamplerFilter Filter;
Shader::SamplerCoordinate Coordinate[3];
float LodBias;
float Anisotropy;
Float4 BorderColor;
};
typedef std::vector<Sampler> SamplerArray;
void InitializeMaps ();
bool Parse (const std::string& fileName, const std::string& profileName,
Program& program);
void GetTokens (const std::string& line, std::string::size_type begin,
std::vector<std::string>& tokens);
bool CreateEffect (const Program& vProgram, const Program& pProgram);
bool UpdateEffect (const Program& vProgram, const Program& pProgram);
bool Process (const Program& program, InputArray& inputs,
OutputArray& outputs, ConstantArray& constants,
SamplerArray& samplers);
bool GetInput (const TokenArray& tokens, const std::string& name,
Shader::VariableType type, InputArray& inputs);
bool GetOutput (const TokenArray& tokens, const std::string& name,
Shader::VariableType type, OutputArray& outputs);
bool GetConstant (const TokenArray& tokens, const std::string& name,
Shader::VariableType type, ConstantArray& constants);
bool GetSampler (const TokenArray& tokens, const std::string& name,
Shader::SamplerType type, SamplerArray& samplers);
Shader* CreateShader (bool isVShader, const Program& program,
InputArray& inputs, OutputArray& outputs, ConstantArray& constants,
SamplerArray& samplers);
bool UpdateShader (Shader* shader, const Program& program,
InputArray& inputs, OutputArray& outputs, ConstantArray& constants,
SamplerArray& samplers);
void ReportError (const std::string& message,
const TokenArray* tokens = 0);
typedef std::map<std::string, Shader::VariableType> VariableTypeMap;
VariableTypeMap mVariableTypes;
typedef std::map<std::string, Shader::VariableSemantic> SemanticMap;
SemanticMap mSemantics;
typedef std::map<std::string, Shader::SamplerType> SamplerTypeMap;
SamplerTypeMap mSamplerTypes;
int mActiveProfile;
VisualEffect* mEffect;
VertexShader* mVShader;
PixelShader* mPShader;
bool mAlreadyCompiled;
static const std::string msVProfileName[Shader::MAX_PROFILES];
static const std::string msPProfileName[Shader::MAX_PROFILES];
static const std::string msVTName[Shader::VT_QUANTITY];
static const std::string msVSName[Shader::VS_QUANTITY];
static const std::string msSTName[Shader::ST_QUANTITY];
};
#endif
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