OgreGLESHardwarePixelBuffer.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) 2008 Renato Araujo Oliveira Filho <renatox@gmail.com>
    00008 Copyright (c) 2000-2012 Torus Knot Software Ltd
    00009
    00010 Permission is hereby granted, free of charge, to any person obtaining a copy
    00011 of this software and associated documentation files (the "Software"), to deal
    00012 in the Software without restriction, including without limitation the rights
    00013 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    00014 copies of the Software, and to permit persons to whom the Software is
    00015 furnished to do so, subject to the following conditions:
    00016
    00017 The above copyright notice and this permission notice shall be included in
    00018 all copies or substantial portions of the Software.
    00019
    00020 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    00021 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    00022 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    00023 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    00024 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    00025 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    00026 THE SOFTWARE.
    00027 -----------------------------------------------------------------------------
    00028 */
    00029
    00030 #ifndef __GLESHardwarePixelBuffer_H__
    00031 #define __GLESHardwarePixelBuffer_H__
    00032
    00033 #include "OgreGLESPrerequisites.h"
    00034 #include "OgreHardwarePixelBuffer.h"
    00035
    00036 namespace Ogre {
    00037     class _OgreGLESExport GLESHardwarePixelBuffer: public HardwarePixelBuffer
    00038     {
    00039         protected:
    00041             PixelBox lockImpl(const Image::Box lockBox,  LockOptions options);
    00042
    00044             void unlockImpl(void);
    00045
    00046             // Internal buffer; either on-card or in system memory, freed/allocated on demand
    00047             // depending on buffer usage
    00048             PixelBox mBuffer;
    00049             GLenum mGLInternalFormat; // GL internal format
    00050             LockOptions mCurrentLockOptions;
    00051
    00052             // Buffer allocation/freeage
    00053             void allocateBuffer();
    00054
    00055             void freeBuffer();
    00056
    00057             // Upload a box of pixels to this buffer on the card
    00058             virtual void upload(const PixelBox &data, const Image::Box &dest);
    00059
    00060             // Download a box of pixels from the card
    00061             virtual void download(const PixelBox &data);
    00062
    00063         public:
    00065             GLESHardwarePixelBuffer(size_t mWidth, size_t mHeight, size_t mDepth,
    00066                                   PixelFormat mFormat,
    00067                                   HardwareBuffer::Usage usage);
    00068
    00070             void blitFromMemory(const PixelBox &src, const Image::Box &dstBox);
    00071
    00073             void blitToMemory(const Image::Box &srcBox, const PixelBox &dst);
    00074
    00075             virtual ~GLESHardwarePixelBuffer();
    00076
    00079             virtual void bindToFramebuffer(GLenum attachment, size_t zoffset);
    00080             GLenum getGLFormat() { return mGLInternalFormat; }
    00081     };
    00082
    00085     class _OgreGLESExport GLESTextureBuffer: public GLESHardwarePixelBuffer
    00086     {
    00087         public:
    00089             GLESTextureBuffer(const String &baseName, GLenum target, GLuint id, GLint width, GLint height, GLint internalFormat,
    00090                             GLenum format, GLint face, GLint level, Usage usage, bool softwareMipmap, bool writeGamma, uint fsaa);
    00091             virtual ~GLESTextureBuffer();
    00092
    00094             virtual void bindToFramebuffer(GLenum attachment, size_t zoffset);
    00095
    00097             RenderTexture* getRenderTarget(size_t);
    00098
    00100             virtual void upload(const PixelBox &data, const Image::Box &dest);
    00101
    00103             virtual void download(const PixelBox &data);
    00104
    00106             virtual void blitFromMemory(const PixelBox &src_orig, const Image::Box &dstBox);
    00107
    00109             void _clearSliceRTT(size_t zoffset)
    00110             {
    00111                 mSliceTRT[zoffset] = 0;
    00112             }
    00113
    00114             // Copy from framebuffer
    00115             void copyFromFramebuffer(size_t zoffset);
    00116
    00118             void blit(const HardwarePixelBufferSharedPtr &src, const Image::Box &srcBox, const Image::Box &dstBox);
    00119             // Blitting implementation
    00120             void blitFromTexture(GLESTextureBuffer *src, const Image::Box &srcBox, const Image::Box &dstBox);
    00121
    00122         protected:
    00123             // In case this is a texture level
    00124             GLenum mTarget;
    00125             GLenum mFaceTarget; // same as mTarget in case of GL_TEXTURE_xD, but cubemap face for cubemaps
    00126             GLuint mTextureID;
    00127             GLint mFace;
    00128             GLint mLevel;
    00129             bool mSoftwareMipmap;
    00130
    00131             typedef std::vector<RenderTexture*> SliceTRT;
    00132             SliceTRT mSliceTRT;
    00133
    00134             static void buildMipmaps(const PixelBox &data);
    00135     };
    00136
    00139     class _OgreGLESExport GLESRenderBuffer: public GLESHardwarePixelBuffer
    00140     {
    00141         public:
    00142             GLESRenderBuffer(GLenum format, size_t width, size_t height, GLsizei numSamples);
    00143             virtual ~GLESRenderBuffer();
    00144
    00146             virtual void bindToFramebuffer(GLenum attachment, size_t zoffset);
    00147
    00148         protected:
    00149             // In case this is a render buffer
    00150             GLuint mRenderbufferID;
    00151     };
    00152 }
    00153
    00154 #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