OgreShaderFFPColour.h

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/*
-----------------------------------------------------------------------------
This source file is part of OGRE
(Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org

Copyright (c) 2000-2014 Torus Knot Software Ltd
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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THE SOFTWARE.
-----------------------------------------------------------------------------
*/
#ifndef _ShaderFFPColur_
#define _ShaderFFPColur_

#include "OgreShaderPrerequisites.h"
#ifdef RTSHADER_SYSTEM_BUILD_CORE_SHADERS
#include "OgreShaderSubRenderState.h"
#include "OgreShaderParameter.h"

namespace Ogre {
namespace RTShader {

class _OgreRTSSExport FFPColour : public SubRenderState
{
public:

    // Parameter stage flags of the colour component.
    enum StageFlags
    {
        SF_VS_INPUT_DIFFUSE     = 1 << 1,
        SF_VS_INPUT_SPECULAR    = 1 << 2,
        SF_VS_OUTPUT_DIFFUSE    = 1 << 3,
        SF_VS_OUTPUT_SPECULAR   = 1 << 4,
        SF_PS_INPUT_DIFFUSE     = 1 << 5,
        SF_PS_INPUT_SPECULAR    = 1 << 6,
        SF_PS_OUTPUT_DIFFUSE    = 1 << 7,
        SF_PS_OUTPUT_SPECULAR   = 1 << 8
    };

// Interface.
public:

    FFPColour();


    virtual const String& getType() const;

    virtual int getExecutionOrder() const;

    virtual void copyFrom(const SubRenderState& rhs);

    virtual bool preAddToRenderState(const RenderState* renderState, Pass* srcPass, Pass* dstPass);

    void setResolveStageFlags(unsigned int flags) { mResolveStageFlags = flags; }

    unsigned int getResolveStageFlags() const            { return mResolveStageFlags; }

    void addResolveStageMask(unsigned int mask)  { mResolveStageFlags |= mask; }

    void removeResolveStageMask(unsigned int mask)  { mResolveStageFlags &= ~mask; }

    static String Type;

// Protected methods
protected:  
    virtual bool resolveParameters(ProgramSet* programSet); 
    virtual bool resolveDependencies(ProgramSet* programSet);
    virtual bool addFunctionInvocations(ProgramSet* programSet);

// Attributes.
protected:
    // Vertex shader input diffuse component.
    ParameterPtr mVSInputDiffuse;
    // Vertex shader input specular component.
    ParameterPtr mVSInputSpecular;
    // Vertex shader output diffuse component.
    ParameterPtr mVSOutputDiffuse;
    // Vertex shader input specular component.
    ParameterPtr mVSOutputSpecular;
    // Pixel shader input diffuse component.
    ParameterPtr mPSInputDiffuse;
    // Pixel shader input specular component.
    ParameterPtr mPSInputSpecular;
    // Pixel shader output diffuse component.
    ParameterPtr mPSOutputDiffuse;
    // Pixel shader input specular component.
    ParameterPtr mPSOutputSpecular;
    // Stage flags that defines resolve parameters definitions.
    unsigned int mResolveStageFlags;
};


class _OgreRTSSExport FFPColourFactory : public SubRenderStateFactory
{
public:

    virtual const String& getType() const;

    virtual SubRenderState* createInstance(ScriptCompiler* compiler, PropertyAbstractNode* prop, Pass* pass, SGScriptTranslator* translator);

    virtual void writeInstance(MaterialSerializer* ser, SubRenderState* subRenderState, Pass* srcPass, Pass* dstPass);

    
protected:

    virtual SubRenderState* createInstanceImpl();


};

}
}

#endif
#endif