OgreGLESFBORenderTexture.h
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00001 /*
00002 -----------------------------------------------------------------------------
00003 This source file is part of OGRE
00004     (Object-oriented Graphics Rendering Engine)
00005 For the latest info, see http://www.ogre3d.org/
00006 
00007 Copyright (c) 2000-2012 Torus Knot Software Ltd
00008 
00009 Permission is hereby granted, free of charge, to any person obtaining a copy
00010 of this software and associated documentation files (the "Software"), to deal
00011 in the Software without restriction, including without limitation the rights
00012 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00013 copies of the Software, and to permit persons to whom the Software is
00014 furnished to do so, subject to the following conditions:
00015 
00016 The above copyright notice and this permission notice shall be included in
00017 all copies or substantial portions of the Software.
00018 
00019 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00020 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00021 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00022 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00023 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00024 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00025 THE SOFTWARE.
00026 -----------------------------------------------------------------------------
00027 */
00028 #ifndef __OgreGLESFBORTT_H__
00029 #define __OgreGLESFBORTT_H__
00030 
00031 #include "OgreGLESRenderTexture.h"
00032 #include "OgreGLESContext.h"
00033 #include "OgreGLESFrameBufferObject.h"
00034 
00035 namespace Ogre {
00036     class GLESFBOManager;
00037     class GLESRenderBuffer;
00038 
00041     class _OgreGLESExport GLESFBORenderTexture: public GLESRenderTexture
00042     {
00043     public:
00044         GLESFBORenderTexture(GLESFBOManager *manager, const String &name, const GLESSurfaceDesc &target, bool writeGamma, uint fsaa);
00045 
00046         virtual void getCustomAttribute(const String& name, void* pData);
00047 
00049         virtual void swapBuffers(bool waitForVSync = true);
00050 
00052         virtual bool attachDepthBuffer( DepthBuffer *depthBuffer );
00053         virtual void detachDepthBuffer();
00054         virtual void _detachDepthBuffer();
00055     protected:
00056         GLESFrameBufferObject mFB;
00057     };
00058     
00061     class _OgreGLESExport GLESFBOManager: public GLESRTTManager
00062     {
00063     public:
00064         GLESFBOManager();
00065         ~GLESFBOManager();
00066         
00070         void bind(RenderTarget *target);
00071         
00074         void unbind(RenderTarget *target) {};
00075         
00078         void getBestDepthStencil(GLenum internalFormat, GLenum *depthFormat, GLenum *stencilFormat);
00079         
00082         virtual GLESFBORenderTexture *createRenderTexture(const String &name, 
00083             const GLESSurfaceDesc &target, bool writeGamma, uint fsaa);
00084 
00087         virtual MultiRenderTarget* createMultiRenderTarget(const String & name);
00088         
00091         GLESSurfaceDesc requestRenderBuffer(GLenum format, size_t width, size_t height, uint fsaa);
00095         void requestRenderBuffer(const GLESSurfaceDesc &surface);
00098         void releaseRenderBuffer(const GLESSurfaceDesc &surface);
00099         
00102         bool checkFormat(PixelFormat format) { return mProps[format].valid; }
00103         
00106         GLuint getTemporaryFBO() { return mTempFBO; }
00107     private:
00110         struct FormatProperties
00111         {
00112             bool valid; // This format can be used as RTT (FBO)
00113             
00116             struct Mode
00117             {
00118                 size_t depth;     // Depth format (0=no depth)
00119                 size_t stencil;   // Stencil format (0=no stencil)
00120             };
00121             
00122             vector<Mode>::type modes;
00123         };
00126         FormatProperties mProps[PF_COUNT];
00127         
00132         struct RBFormat
00133         {
00134             RBFormat(GLenum inFormat, size_t inWidth, size_t inHeight, uint fsaa):
00135                 format(inFormat), width(inWidth), height(inHeight), samples(fsaa)
00136             {}
00137             GLenum format;
00138             size_t width;
00139             size_t height;
00140             uint samples;
00141             // Overloaded comparison operator for usage in map
00142             bool operator < (const RBFormat &other) const
00143             {
00144                 if(format < other.format)
00145                 {
00146                     return true;
00147                 }
00148                 else if(format == other.format)
00149                 {
00150                     if(width < other.width)
00151                     {
00152                         return true;
00153                     }
00154                     else if(width == other.width)
00155                     {
00156                         if(height < other.height)
00157                             return true;
00158                         else if (height == other.height)
00159                         {
00160                             if (samples < other.samples)
00161                                 return true;
00162                         }
00163                     }
00164                 }
00165                 return false;
00166             }
00167         };
00168         struct RBRef
00169         {
00170             RBRef(){}
00171             RBRef(GLESRenderBuffer *inBuffer):
00172                 buffer(inBuffer), refcount(1)
00173             { }
00174             GLESRenderBuffer *buffer;
00175             size_t refcount;
00176         };
00177         typedef map<RBFormat, RBRef>::type RenderBufferMap;
00178         RenderBufferMap mRenderBufferMap;
00179         // map(format, sizex, sizey) -> [GLSurface*,refcount]
00180         
00183         GLuint mTempFBO;
00184         
00186         void detectFBOFormats();
00187         GLuint _tryFormat(GLenum depthFormat, GLenum stencilFormat);
00188         bool _tryPackedFormat(GLenum packedFormat);
00189     };
00190 }
00191 
00192 #endif

Copyright © 2012 Torus Knot Software Ltd
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This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
Last modified Fri May 25 2012 21:48:50