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Object-Oriented Graphics Rendering Engine
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OgreGLHardwarePixelBuffer.h
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1 /*
2 -----------------------------------------------------------------------------
3 This source file is part of OGRE
4  (Object-oriented Graphics Rendering Engine)
5 For the latest info, see http://www.ogre3d.org/
6 
7 Copyright (c) 2000-2014 Torus Knot Software Ltd
8 
9 Permission is hereby granted, free of charge, to any person obtaining a copy
10 of this software and associated documentation files (the "Software"), to deal
11 in the Software without restriction, including without limitation the rights
12 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 copies of the Software, and to permit persons to whom the Software is
14 furnished to do so, subject to the following conditions:
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16 The above copyright notice and this permission notice shall be included in
17 all copies or substantial portions of the Software.
18 
19 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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26 -----------------------------------------------------------------------------
27 */
28 #ifndef __GLPIXELBUFFER_H__
29 #define __GLPIXELBUFFER_H__
30 
31 #include "OgreGLPrerequisites.h"
33 
34 namespace Ogre {
36  {
37  protected:
39  PixelBox lockImpl(const Image::Box &lockBox, LockOptions options);
40 
42  void unlockImpl(void);
43 
49 
51  void allocateBuffer();
52  void freeBuffer();
54  virtual void upload(const PixelBox &data, const Image::Box &dest);
56  virtual void download(const PixelBox &data);
57  public:
59  GLHardwarePixelBuffer(uint32 mWidth, uint32 mHeight, uint32 mDepth,
60  PixelFormat mFormat,
61  HardwareBuffer::Usage usage);
62 
64  void blitFromMemory(const PixelBox &src, const Image::Box &dstBox);
65 
67  void blitToMemory(const Image::Box &srcBox, const PixelBox &dst);
68 
70 
73  virtual void bindToFramebuffer(GLenum attachment, uint32 zoffset);
74  GLenum getGLFormat() { return mGLInternalFormat; }
75  };
76 
80  {
81  public:
83  GLTextureBuffer(GLSupport& support, const String &baseName, GLenum target, GLuint id, GLint face,
84  GLint level, Usage usage, bool softwareMipmap, bool writeGamma, uint fsaa);
85  ~GLTextureBuffer();
86 
88  virtual void bindToFramebuffer(GLenum attachment, uint32 zoffset);
90  RenderTexture* getRenderTarget(size_t slice);
92  virtual void upload(const PixelBox &data, const Image::Box &dest);
94  virtual void download(const PixelBox &data);
95 
97  virtual void blitFromMemory(const PixelBox &src_orig, const Image::Box &dstBox);
98 
100  void _clearSliceRTT(size_t zoffset)
101  {
102  mSliceTRT[zoffset] = 0;
103  }
105  void copyFromFramebuffer(uint32 zoffset);
107  void blit(const HardwarePixelBufferSharedPtr &src, const Image::Box &srcBox, const Image::Box &dstBox);
109  void blitFromTexture(GLTextureBuffer *src, const Image::Box &srcBox, const Image::Box &dstBox);
110  protected:
111  // In case this is a texture level
112  GLenum mTarget;
113  GLenum mFaceTarget; // same as mTarget in case of GL_TEXTURE_xD, but cubemap face for cubemaps
114  GLuint mTextureID;
115  GLint mFace;
116  GLint mLevel;
117  bool mSoftwareMipmap; // Use GLU for mip mapping
118  bool mHwGamma;
119 
122 
124  };
128  {
129  public:
130  GLRenderBuffer(GLenum format, uint32 width, uint32 height, GLsizei numSamples);
131  ~GLRenderBuffer();
132 
134  virtual void bindToFramebuffer(GLenum attachment, uint32 zoffset);
135  protected:
138  };
139 }
140 
141 #endif
unsigned int uint32
Definition: OgrePlatform.h:420
This class represents a RenderTarget that renders to a Texture.
LockOptions mCurrentLockOptions
GL internal format.
vector< RenderTexture * >::type SliceTRT
#define _OgreGLExport
LockOptions
Locking options.
Structure used to define a box in a 3-D integer space.
Definition: OgreCommon.h:689
PixelBox mBuffer
Internal buffer; either on-card or in system memory, freed/allocated on demand depending on buffer us...
PixelFormat
The pixel format used for images, textures, and render surfaces.
Renderbuffer surface.
Usage
Enums describing buffer usage; not mutually exclusive.
Shared pointer implementation used to share pixel buffers.
Specialisation of HardwareBuffer for a pixel buffer.
void _clearSliceRTT(size_t zoffset)
Notify TextureBuffer of destruction of render target.
_StringBase String
Definition: OgreCommon.h:53
GLuint mRenderbufferID
In case this is a render buffer.
unsigned int uint