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 __GLPIXELBUFFER_H__ 00029 #define __GLPIXELBUFFER_H__ 00030 00031 #include "OgreGLPrerequisites.h" 00032 #include "OgreHardwarePixelBuffer.h" 00033 00034 namespace Ogre { 00035 class _OgreGLExport GLHardwarePixelBuffer: public HardwarePixelBuffer 00036 { 00037 protected: 00039 PixelBox lockImpl(const Image::Box lockBox, LockOptions options); 00040 00042 void unlockImpl(void); 00043 00044 // Internal buffer; either on-card or in system memory, freed/allocated on demand 00045 // depending on buffer usage 00046 PixelBox mBuffer; 00047 GLenum mGLInternalFormat; // GL internal format 00048 LockOptions mCurrentLockOptions; 00049 00050 // Buffer allocation/freeage 00051 void allocateBuffer(); 00052 void freeBuffer(); 00053 // Upload a box of pixels to this buffer on the card 00054 virtual void upload(const PixelBox &data, const Image::Box &dest); 00055 // Download a box of pixels from the card 00056 virtual void download(const PixelBox &data); 00057 public: 00059 GLHardwarePixelBuffer(size_t mWidth, size_t mHeight, size_t mDepth, 00060 PixelFormat mFormat, 00061 HardwareBuffer::Usage usage); 00062 00064 void blitFromMemory(const PixelBox &src, const Image::Box &dstBox); 00065 00067 void blitToMemory(const Image::Box &srcBox, const PixelBox &dst); 00068 00069 ~GLHardwarePixelBuffer(); 00070 00073 virtual void bindToFramebuffer(GLenum attachment, size_t zoffset); 00074 GLenum getGLFormat() { return mGLInternalFormat; } 00075 }; 00076 00079 class _OgreGLExport GLTextureBuffer: public GLHardwarePixelBuffer 00080 { 00081 public: 00083 GLTextureBuffer(const String &baseName, GLenum target, GLuint id, GLint face, 00084 GLint level, Usage usage, bool softwareMipmap, bool writeGamma, uint fsaa); 00085 ~GLTextureBuffer(); 00086 00088 virtual void bindToFramebuffer(GLenum attachment, size_t zoffset); 00090 RenderTexture* getRenderTarget(size_t); 00092 virtual void upload(const PixelBox &data, const Image::Box &dest); 00094 virtual void download(const PixelBox &data); 00095 00097 virtual void blitFromMemory(const PixelBox &src_orig, const Image::Box &dstBox); 00098 00100 void _clearSliceRTT(size_t zoffset) 00101 { 00102 mSliceTRT[zoffset] = 0; 00103 } 00105 void copyFromFramebuffer(size_t zoffset); 00107 void blit(const HardwarePixelBufferSharedPtr &src, const Image::Box &srcBox, const Image::Box &dstBox); 00108 // Blitting implementation 00109 void blitFromTexture(GLTextureBuffer *src, const Image::Box &srcBox, const Image::Box &dstBox); 00110 protected: 00111 // In case this is a texture level 00112 GLenum mTarget; 00113 GLenum mFaceTarget; // same as mTarget in case of GL_TEXTURE_xD, but cubemap face for cubemaps 00114 GLuint mTextureID; 00115 GLint mFace; 00116 GLint mLevel; 00117 bool mSoftwareMipmap; // Use GLU for mip mapping 00118 00119 typedef vector<RenderTexture*>::type SliceTRT; 00120 SliceTRT mSliceTRT; 00121 }; 00124 class _OgreGLExport GLRenderBuffer: public GLHardwarePixelBuffer 00125 { 00126 public: 00127 GLRenderBuffer(GLenum format, size_t width, size_t height, GLsizei numSamples); 00128 ~GLRenderBuffer(); 00129 00131 virtual void bindToFramebuffer(GLenum attachment, size_t zoffset); 00132 protected: 00133 // In case this is a render buffer 00134 GLuint mRenderbufferID; 00135 }; 00136 } 00137 00138 #endif
Copyright © 2012 Torus Knot Software Ltd
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
Last modified Sun Sep 2 2012 07:27:21