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Object-Oriented Graphics Rendering Engine
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OgreGLES2HardwarePixelBuffer.h
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1 /*
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3 This source file is part of OGRE
4  (Object-oriented Graphics Rendering Engine)
5 For the latest info, see http://www.ogre3d.org/
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7 Copyright (c) 2000-2014 Torus Knot Software Ltd
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28 
29 #ifndef __GLES2HardwarePixelBuffer_H__
30 #define __GLES2HardwarePixelBuffer_H__
31 
32 #include "OgreGLES2Prerequisites.h"
34 
35 namespace Ogre {
37  {
38  protected:
40  PixelBox lockImpl(const Image::Box &lockBox, LockOptions options);
41 
43  void unlockImpl(void);
44 
45  // Internal buffer; either on-card or in system memory, freed/allocated on demand
46  // depending on buffer usage
48  GLenum mGLInternalFormat; // GL internal format
50 
51  // Buffer allocation/freeage
52  void allocateBuffer();
53 
54  void freeBuffer();
55 
56  // Upload a box of pixels to this buffer on the card
57  virtual void upload(const PixelBox &data, const Image::Box &dest);
58 
59  // Download a box of pixels from the card
60  virtual void download(const PixelBox &data);
61 
62  public:
64  GLES2HardwarePixelBuffer(uint32 mWidth, uint32 mHeight, uint32 mDepth,
65  PixelFormat mFormat,
66  HardwareBuffer::Usage usage);
67 
69  void blitFromMemory(const PixelBox &src, const Image::Box &dstBox);
70 
72  void blitToMemory(const Image::Box &srcBox, const PixelBox &dst);
73 
74  virtual ~GLES2HardwarePixelBuffer();
75 
78  virtual void bindToFramebuffer(GLenum attachment, size_t zoffset);
79  GLenum getGLFormat() { return mGLInternalFormat; }
80  };
81 
85  {
86  public:
88  GLES2TextureBuffer(const String &baseName, GLenum target, GLuint id, GLint width, GLint height, GLint depth, GLint internalFormat,
89  GLint format, GLint face, GLint level, Usage usage, bool softwareMipmap, bool writeGamma, uint fsaa);
90  virtual ~GLES2TextureBuffer();
91 
93  virtual void bindToFramebuffer(GLenum attachment, size_t zoffset);
94 
96  RenderTexture* getRenderTarget(size_t slice);
97 
99  virtual void upload(const PixelBox &data, const Image::Box &dest);
100 
102  virtual void download(const PixelBox &data);
103 
105  virtual void blitFromMemory(const PixelBox &src_orig, const Image::Box &dstBox);
106 
108  void _clearSliceRTT(size_t zoffset)
109  {
110  mSliceTRT[zoffset] = 0;
111  }
112 
113  // Copy from framebuffer
114  void copyFromFramebuffer(size_t zoffset);
115 
117  void blit(const HardwarePixelBufferSharedPtr &src, const Image::Box &srcBox, const Image::Box &dstBox);
118  // Blitting implementation
119  void blitFromTexture(GLES2TextureBuffer *src, const Image::Box &srcBox, const Image::Box &dstBox);
120 
121 #if OGRE_PLATFORM == OGRE_PLATFORM_ANDROID
122  // Friends.
123  protected:
124  friend class GLES2Texture;
125 
126  void updateTextureId(GLuint textureID);
127 #endif
128 
129  protected:
130  // In case this is a texture level
131  GLenum mTarget;
132  GLenum mFaceTarget; // same as mTarget in case of GL_TEXTURE_xD, but cubemap face for cubemaps
133  GLuint mTextureID;
134  GLuint mBufferId;
135  GLint mFace;
136  GLint mLevel;
138 
141 
142  void buildMipmaps(const PixelBox &data);
143  };
144 
148  {
149  public:
150  GLES2RenderBuffer(GLenum format, uint32 width, uint32 height, GLsizei numSamples);
151  virtual ~GLES2RenderBuffer();
152 
154  virtual void bindToFramebuffer(GLenum attachment, size_t zoffset);
155 
156  protected:
157  // In case this is a render buffer
159  GLsizei mNumSamples;
160  };
161 }
162 
163 #endif
void _clearSliceRTT(size_t zoffset)
Notify TextureBuffer of destruction of render target.
unsigned int uint32
Definition: OgrePlatform.h:420
This class represents a RenderTarget that renders to a Texture.
#define _OgreGLES2Export
LockOptions
Locking options.
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
vector< RenderTexture * >::type SliceTRT
unsigned int uint