OgreGLGpuProgram.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
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
-----------------------------------------------------------------------------
*/

#ifndef __GLGpuProgram_H__
#define __GLGpuProgram_H__

#include "OgreGLPrerequisites.h"
#include "OgreGpuProgram.h"
#include "OgreHardwareVertexBuffer.h"

namespace Ogre {

    class _OgreGLExport GLGpuProgram : public GpuProgram
    {
    public:
        GLGpuProgram(ResourceManager* creator, const String& name, ResourceHandle handle,
            const String& group, bool isManual = false, ManualResourceLoader* loader = 0);
        virtual ~GLGpuProgram();

        virtual void bindProgram(void) {}
        virtual void unbindProgram(void) {}

        virtual void bindProgramParameters(GpuProgramParametersSharedPtr params, uint16 mask) {}
        virtual void bindProgramPassIterationParameters(GpuProgramParametersSharedPtr params) {}

        virtual size_t calculateSize(void) const;

        GLuint getProgramID(void) const
        { return mProgramID; }

        virtual GLuint getAttributeIndex(VertexElementSemantic semantic, uint index);
        virtual bool isAttributeValid(VertexElementSemantic semantic, uint index);

        static GLuint getFixedAttributeIndex(VertexElementSemantic semantic, uint index);

    protected:
        void loadFromSource(void) {}
        void unloadImpl(void) {}

        GLuint mProgramID;
        GLenum mProgramType;
    };

    class _OgreGLExport GLArbGpuProgram : public GLGpuProgram
    {
    public:
        GLArbGpuProgram(ResourceManager* creator, const String& name, ResourceHandle handle,
            const String& group, bool isManual = false, ManualResourceLoader* loader = 0);
        virtual ~GLArbGpuProgram();

        void setType(GpuProgramType t);


        void bindProgram(void);
        void unbindProgram(void);
        void bindProgramParameters(GpuProgramParametersSharedPtr params, uint16 mask);
        void bindProgramPassIterationParameters(GpuProgramParametersSharedPtr params);

        GLuint getProgramType(void) const
        { return mProgramType; }

    protected:
        void loadFromSource(void);
        void unloadImpl(void);

    };



} // namespace Ogre

#endif // __GLGpuProgram_H__