OgreGLES2RenderTexture.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
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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*/

#ifndef __GLES2RenderTexture_H__
#define __GLES2RenderTexture_H__

#include "OgreGLES2Texture.h"

namespace Ogre {
    class GLES2HardwarePixelBuffer;

    struct _OgreGLES2Export GLES2SurfaceDesc
    {
        public:
            GLES2HardwarePixelBuffer *buffer;
            uint32 zoffset;
            uint numSamples;

            GLES2SurfaceDesc() :buffer(0), zoffset(0), numSamples(0) {}
    };

    class _OgreGLES2Export GLES2RenderTexture : public RenderTexture
    {
        public:
            GLES2RenderTexture(const String &name, const GLES2SurfaceDesc &target, bool writeGamma, uint fsaa);
            virtual ~GLES2RenderTexture();
            bool requiresTextureFlipping() const { return true; }
    };

    class _OgreGLES2Export GLES2RTTManager : public Singleton<GLES2RTTManager>
    {
        public:
            virtual ~GLES2RTTManager();

            virtual RenderTexture *createRenderTexture(const String &name, const GLES2SurfaceDesc &target, bool writeGamma, uint fsaa) = 0;

            virtual bool checkFormat(PixelFormat format) = 0;

            virtual void bind(RenderTarget *target) = 0;

            virtual void unbind(RenderTarget *target) = 0;

            virtual void getBestDepthStencil(GLenum internalFormat, GLenum *depthFormat, GLenum *stencilFormat)
            {
                *depthFormat = GL_NONE;
                *stencilFormat = GL_NONE;
            }

            virtual MultiRenderTarget* createMultiRenderTarget(const String & name);

            virtual PixelFormat getSupportedAlternative(PixelFormat format);
    };

    class GLES2CopyingRTTManager;
    class _OgreGLES2Export GLES2CopyingRenderTexture : public GLES2RenderTexture
    {
        public:
            GLES2CopyingRenderTexture(GLES2CopyingRTTManager *manager,
                                   const String &name,
                                   const GLES2SurfaceDesc &target,
                                   bool writeGamma, uint fsaa);

            virtual void getCustomAttribute(const String& name, void* pData);
    };

    class _OgreGLES2Export GLES2CopyingRTTManager : public GLES2RTTManager
    {
        public:
            GLES2CopyingRTTManager();
            virtual ~GLES2CopyingRTTManager();

            virtual RenderTexture *createRenderTexture(const String &name, const GLES2SurfaceDesc &target, bool writeGamma, uint fsaa);
            
            virtual bool checkFormat(PixelFormat format);

            virtual void bind(RenderTarget *target);

            virtual void unbind(RenderTarget *target);
    };
}

#endif