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Object-Oriented Graphics Rendering Engine
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OgreGLESHardwarePixelBuffer.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) 2008 Renato Araujo Oliveira Filho <renatox@gmail.com>
8 Copyright (c) 2000-2014 Torus Knot Software Ltd
9 
10 Permission is hereby granted, free of charge, to any person obtaining a copy
11 of this software and associated documentation files (the "Software"), to deal
12 in the Software without restriction, including without limitation the rights
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17 The above copyright notice and this permission notice shall be included in
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20 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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26 THE SOFTWARE.
27 -----------------------------------------------------------------------------
28 */
29 
30 #ifndef __GLESHardwarePixelBuffer_H__
31 #define __GLESHardwarePixelBuffer_H__
32 
33 #include "OgreGLESPrerequisites.h"
35 
36 namespace Ogre {
38  {
39  protected:
41  PixelBox lockImpl(const Image::Box &lockBox, LockOptions options);
42 
44  void unlockImpl(void);
45 
46  // Internal buffer; either on-card or in system memory, freed/allocated on demand
47  // depending on buffer usage
49  GLenum mGLInternalFormat; // GL internal format
50  LockOptions mCurrentLockOptions;
51 
52  // Buffer allocation/freeage
53  void allocateBuffer();
54 
55  void freeBuffer();
56 
57  // Upload a box of pixels to this buffer on the card
58  virtual void upload(const PixelBox &data, const Image::Box &dest);
59 
60  // Download a box of pixels from the card
61  virtual void download(const PixelBox &data);
62 
63  public:
65  GLESHardwarePixelBuffer(size_t mWidth, size_t mHeight, size_t mDepth,
66  PixelFormat mFormat,
67  HardwareBuffer::Usage usage);
68 
70  void blitFromMemory(const PixelBox &src, const Image::Box &dstBox);
71 
73  void blitToMemory(const Image::Box &srcBox, const PixelBox &dst);
74 
75  virtual ~GLESHardwarePixelBuffer();
76 
79  virtual void bindToFramebuffer(GLenum attachment, size_t zoffset);
80  GLenum getGLFormat() { return mGLInternalFormat; }
81  };
82 
86  {
87  public:
89  GLESTextureBuffer(const String &baseName, GLenum target, GLuint id, GLint width, GLint height, GLint internalFormat,
90  GLenum format, GLint face, GLint level, Usage usage, bool softwareMipmap, bool writeGamma, uint fsaa);
91  virtual ~GLESTextureBuffer();
92 
94  virtual void bindToFramebuffer(GLenum attachment, size_t zoffset);
95 
97  RenderTexture* getRenderTarget(size_t slice);
98 
100  virtual void upload(const PixelBox &data, const Image::Box &dest);
101 
103  virtual void download(const PixelBox &data);
104 
106  virtual void blitFromMemory(const PixelBox &src_orig, const Image::Box &dstBox);
107 
109  void _clearSliceRTT(size_t zoffset)
110  {
111  mSliceTRT[zoffset] = 0;
112  }
113 
114  // Copy from framebuffer
115  void copyFromFramebuffer(size_t zoffset);
116 
118  void blit(const HardwarePixelBufferSharedPtr &src, const Image::Box &srcBox, const Image::Box &dstBox);
119  // Blitting implementation
120  void blitFromTexture(GLESTextureBuffer *src, const Image::Box &srcBox, const Image::Box &dstBox);
121 
122 #if OGRE_PLATFORM == OGRE_PLATFORM_ANDROID
123  // Friends.
124  protected:
125  friend class GLESTexture;
126 
127  void updateTextureId(GLuint textureID);
128 #endif
129 
130  protected:
131  // In case this is a texture level
132  GLenum mTarget;
133  GLenum mFaceTarget; // same as mTarget in case of GL_TEXTURE_xD, but cubemap face for cubemaps
134  GLuint mTextureID;
135  GLint mFace;
136  GLint mLevel;
138 
139  typedef std::vector<RenderTexture*> SliceTRT;
141 
142  void buildMipmaps(const PixelBox &data);
143  };
144 
148  {
149  public:
150  GLESRenderBuffer(GLenum format, size_t width, size_t height, GLsizei numSamples);
151  virtual ~GLESRenderBuffer();
152 
154  virtual void bindToFramebuffer(GLenum attachment, size_t zoffset);
155 
156  protected:
157  // In case this is a render buffer
159  };
160 }
161 
162 #endif
This class represents a RenderTarget that renders to a Texture.
void _clearSliceRTT(size_t zoffset)
Notify TextureBuffer of destruction of render target.
#define _OgreGLESExport
Structure used to define a box in a 3-D integer space.
Definition: OgreCommon.h:689
PixelFormat
The pixel format used for images, textures, and render surfaces.
Usage
Enums describing buffer usage; not mutually exclusive.
Shared pointer implementation used to share pixel buffers.
Specialisation of HardwareBuffer for a pixel buffer.
_StringBase String
Definition: OgreCommon.h:53
std::vector< RenderTexture * > SliceTRT
unsigned int uint