genesis-3d_engine/Engine/addons/shadercompiler/ShaderTemplate/ShaderJoint.h

/****************************************************************************
Copyright (c) 2011-2013,WebJet Business Division,CYOU
 
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#ifndef _SHADERJOINT_H_
#define _SHADERJOINT_H_

#include "core/refcounted.h"
#include "util/string.h"
#include "util/array.h"

namespace ShaderProgramCompiler
{
	class CommonShaderSetting;
	class ShadingTemplateSetting;

	class ShaderJoint
{
public:

	ShaderJoint();

	~ShaderJoint();
	
public:

	enum ParamType
	{
		Input = 0,
		OutPut,
	};

	enum PassType
	{
		Forward = 0,
		Depth,
		Shadow,

	};

	struct PassInfo
	{
		Util::String vertEntry;
		Util::String pixelEntry;
		Util::String source;
	};

	struct FunctionParameter
	{
		Util::String   userTypeName;
		Util::String   identifier;
		Util::String   semantic;
	};

	struct VsOuptputInfo
	{
		bool bViewDir;
		bool bTangent;
		bool bClipSpacePos;
		bool bCameraSpacePos;
		bool bColor;
		bool bNormal;
		bool bExternUvs;

		VsOuptputInfo()
			: bTangent(false),
			  bClipSpacePos(false),
			  bCameraSpacePos(false),
			  bColor(false),
			  bNormal(false),
			  bExternUvs(false),
			  bViewDir(false)
		{

		}
	};

	struct CustomFuncDesc
	{
		Util::Array<FunctionParameter>   funcInputParams;
		Util::Array<FunctionParameter>   funcOutputParams;

		Util::String paramInputType;
		Util::String paramInputName;
		
		Util::String paramOutputType;
		Util::String paramOutputName;

		VsOuptputInfo vsOutput;
	};

public:

	void AddFunctionParam(const FunctionParameter& param, const ParamType& type );

	void SetFunctionIOType(const Util::String& name, const ParamType& type);

	void SetFunctionIOName(const Util::String& name, const ParamType& type);

	void Generate(CommonShaderSetting* pCommon, ShadingTemplateSetting* pSegment, const Util::String& renderState, const Util::String& source);

	const Util::Dictionary< PassType, PassInfo >& GetPassInfo() const;

	const Util::Dictionary< PassType, Util::String >& GetPassRenderState() const;

protected:

	void _GenerateForwardPass(const CommonShaderSetting* pCommon, const ShadingTemplateSetting* pSegment);

	void _GenerateDepthPass(const CommonShaderSetting* pCommon, const ShadingTemplateSetting* pSegment, const Util::String& renderState);

	void _GenerateShadowPass(const CommonShaderSetting* pCommon, const ShadingTemplateSetting* pSegment, const Util::String& renderState);

	void _GenerateGBufferPass(const CommonShaderSetting* pCommon, const ShadingTemplateSetting* pSegment);

	void _GenerateDefferdLightingPass(const CommonShaderSetting* pCommon, const ShadingTemplateSetting* pSegment);

	void _GenerateFinalCode(const CommonShaderSetting* pCommon, const ShadingTemplateSetting* pSegment, const PassType& passType, Util::String& code);

	void _CreateVsOutput(const ShadingTemplateSetting* pSegment, Util::String& code, PassType type);

	void _CreateVsSegment(const CommonShaderSetting* pCommon, const ShadingTemplateSetting* pSegment, const PassType& type, Util::String& code);

	void _CreatePsSegment(const CommonShaderSetting* pCommon, const ShadingTemplateSetting* pSegment, const PassType& type, Util::String& code);

	void _ReGenRenderState(const ShadingTemplateSetting* pSegment, const Util::String& renderState, const PassType& type, Util::String& result);

	void _ParseVsOutput(const CommonShaderSetting* pCommon, const ShadingTemplateSetting* pSegment);

private:

	CustomFuncDesc         m_CustomFunc;
	
	Util::String           m_sJointedSource;

	Util::Dictionary< PassType, PassInfo >     m_PassInfos;
	Util::Dictionary< PassType, Util::String > m_PassRenderState;

};

inline const Util::Dictionary< ShaderJoint::PassType, ShaderJoint::PassInfo >& ShaderJoint::GetPassInfo() const
{
	return m_PassInfos;
}

inline const Util::Dictionary< ShaderJoint::PassType, Util::String >& ShaderJoint::GetPassRenderState() const
{
	return m_PassRenderState;
}

	
inline void ShaderJoint::AddFunctionParam(const ShaderJoint::FunctionParameter& param, const ShaderJoint::ParamType& type )
{
	if (type == ShaderJoint::Input)
	{
		m_CustomFunc.funcInputParams.Append(param);
	}
	else if (type == ShaderJoint::OutPut)
	{
		m_CustomFunc.funcOutputParams.Append(param);
	}
	
}

inline void ShaderJoint::SetFunctionIOType(const Util::String& name, const ShaderJoint::ParamType& type)
{
	if (type == ShaderJoint::Input)
	{
		m_CustomFunc.paramInputType = name;
	}
	else if (type == ShaderJoint::OutPut)
	{
		m_CustomFunc.paramOutputType = name;
	}
}

inline void ShaderJoint::SetFunctionIOName(const Util::String& name, const ShaderJoint::ParamType& type)
{
	if (type == ShaderJoint::Input)
	{
		m_CustomFunc.paramInputName = name;
	}
	else if (type == ShaderJoint::OutPut)
	{
		m_CustomFunc.paramOutputName = name;
	}
}

}




#endif