OgreGLES2HardwarePixelBuffer.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
    00029 #ifndef __GLES2HardwarePixelBuffer_H__
    00030 #define __GLES2HardwarePixelBuffer_H__
    00031
    00032 #include "OgreGLES2Prerequisites.h"
    00033 #include "OgreHardwarePixelBuffer.h"
    00034
    00035 namespace Ogre {
    00036     class _OgreGLES2Export GLES2HardwarePixelBuffer: public HardwarePixelBuffer
    00037     {
    00038         protected:
    00040             PixelBox lockImpl(const Image::Box lockBox,  LockOptions options);
    00041
    00043             void unlockImpl(void);
    00044
    00045             // Internal buffer; either on-card or in system memory, freed/allocated on demand
    00046             // depending on buffer usage
    00047             PixelBox mBuffer;
    00048             GLenum mGLInternalFormat; // GL internal format
    00049             LockOptions mCurrentLockOptions;
    00050
    00051             // Buffer allocation/freeage
    00052             void allocateBuffer();
    00053
    00054             void freeBuffer();
    00055
    00056             // Upload a box of pixels to this buffer on the card
    00057             virtual void upload(const PixelBox &data, const Image::Box &dest);
    00058
    00059             // Download a box of pixels from the card
    00060             virtual void download(const PixelBox &data);
    00061
    00062         public:
    00064             GLES2HardwarePixelBuffer(size_t mWidth, size_t mHeight, size_t mDepth,
    00065                                   PixelFormat mFormat,
    00066                                   HardwareBuffer::Usage usage);
    00067
    00069             void blitFromMemory(const PixelBox &src, const Image::Box &dstBox);
    00070
    00072             void blitToMemory(const Image::Box &srcBox, const PixelBox &dst);
    00073
    00074             virtual ~GLES2HardwarePixelBuffer();
    00075
    00078             virtual void bindToFramebuffer(GLenum attachment, size_t zoffset);
    00079             GLenum getGLFormat() { return mGLInternalFormat; }
    00080     };
    00081
    00084     class _OgreGLES2Export GLES2TextureBuffer: public GLES2HardwarePixelBuffer
    00085             {
    00086         public:
    00088             GLES2TextureBuffer(const String &baseName, GLenum target, GLuint id, GLint width, GLint height, GLint internalFormat,
    00089                                GLint format, GLint face, GLint level, Usage usage, bool softwareMipmap, bool writeGamma, uint fsaa);
    00090             virtual ~GLES2TextureBuffer();
    00091
    00093             virtual void bindToFramebuffer(GLenum attachment, size_t zoffset);
    00094
    00096             RenderTexture* getRenderTarget(size_t);
    00097
    00099             virtual void upload(const PixelBox &data, const Image::Box &dest);
    00100
    00102             virtual void download(const PixelBox &data);
    00103
    00105             virtual void blitFromMemory(const PixelBox &src_orig, const Image::Box &dstBox);
    00106
    00108             void _clearSliceRTT(size_t zoffset)
    00109             {
    00110                 mSliceTRT[zoffset] = 0;
    00111             }
    00112
    00113             // Copy from framebuffer
    00114             void copyFromFramebuffer(size_t zoffset);
    00115
    00117             void blit(const HardwarePixelBufferSharedPtr &src, const Image::Box &srcBox, const Image::Box &dstBox);
    00118             // Blitting implementation
    00119             void blitFromTexture(GLES2TextureBuffer *src, const Image::Box &srcBox, const Image::Box &dstBox);
    00120         protected:
    00121             // In case this is a texture level
    00122             GLenum mTarget;
    00123             GLenum mFaceTarget; // same as mTarget in case of GL_TEXTURE_xD, but cubemap face for cubemaps
    00124             GLuint mTextureID;
    00125             GLint mFace;
    00126             GLint mLevel;
    00127             bool mSoftwareMipmap;
    00128
    00129             typedef vector<RenderTexture*>::type SliceTRT;
    00130             SliceTRT mSliceTRT;
    00131
    00132             void buildMipmaps(const PixelBox &data);
    00133     };
    00134
    00137     class _OgreGLES2Export GLES2RenderBuffer: public GLES2HardwarePixelBuffer
    00138     {
    00139         public:
    00140             GLES2RenderBuffer(GLenum format, size_t width, size_t height, GLsizei numSamples);
    00141             virtual ~GLES2RenderBuffer();
    00142
    00144             virtual void bindToFramebuffer(GLenum attachment, size_t zoffset);
    00145
    00146         protected:
    00147             // In case this is a render buffer
    00148             GLuint mRenderbufferID;
    00149     };
    00150 }
    00151
    00152 #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