OgreHardwarePixelBuffer.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) 2000-2013 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 __HardwarePixelBuffer__
29 #define __HardwarePixelBuffer__
30 
31 // Precompiler options
32 #include "OgrePrerequisites.h"
33 #include "OgreHardwareBuffer.h"
34 #include "OgreSharedPtr.h"
35 #include "OgrePixelFormat.h"
36 #include "OgreImage.h"
37 #include "OgreHeaderPrefix.h"
38 
39 namespace Ogre {
40 
54  {
55  protected:
57  uint32 mWidth, mHeight, mDepth;
59  size_t mRowPitch, mSlicePitch;
66 
67 
69  virtual PixelBox lockImpl(const Image::Box lockBox, LockOptions options) = 0;
70 
73  virtual void* lockImpl(size_t offset, size_t length, LockOptions options);
74 
78  virtual void _clearSliceRTT(size_t zoffset);
79  friend class RenderTexture;
80  public:
82  HardwarePixelBuffer(uint32 mWidth, uint32 mHeight, uint32 mDepth,
83  PixelFormat mFormat,
84  HardwareBuffer::Usage usage, bool useSystemMemory, bool useShadowBuffer);
86 
90  using HardwareBuffer::lock;
91 
98  virtual const PixelBox& lock(const Image::Box& lockBox, LockOptions options);
100  virtual void* lock(size_t offset, size_t length, LockOptions options);
101 
106  const PixelBox& getCurrentLock();
107 
109  virtual void readData(size_t offset, size_t length, void* pDest);
111  virtual void writeData(size_t offset, size_t length, const void* pSource,
112  bool discardWholeBuffer = false);
113 
124  virtual void blit(const HardwarePixelBufferSharedPtr &src, const Image::Box &srcBox, const Image::Box &dstBox);
125 
131  void blit(const HardwarePixelBufferSharedPtr &src);
132 
142  virtual void blitFromMemory(const PixelBox &src, const Image::Box &dstBox) = 0;
143 
149  void blitFromMemory(const PixelBox &src)
150  {
151  blitFromMemory(src, Box(0,0,0,mWidth,mHeight,mDepth));
152  }
153 
161  virtual void blitToMemory(const Image::Box &srcBox, const PixelBox &dst) = 0;
162 
168  void blitToMemory(const PixelBox &dst)
169  {
170  blitToMemory(Box(0,0,0,mWidth,mHeight,mDepth), dst);
171  }
172 
180  virtual RenderTexture *getRenderTarget(size_t slice=0);
181 
183  uint32 getWidth() const { return mWidth; }
185  uint32 getHeight() const { return mHeight; }
187  uint32 getDepth() const { return mDepth; }
189  PixelFormat getFormat() const { return mFormat; }
190  };
191 
193  class _OgreExport HardwarePixelBufferSharedPtr : public SharedPtr<HardwarePixelBuffer>
194  {
195  public:
198 
199 
200  };
201 
204 }
205 
206 #include "OgreHeaderSuffix.h"
207 
208 #endif
209 
Image::Box mLockedBox
The current locked box of this surface (entire surface coords)
virtual void * lock(size_t offset, size_t length, LockOptions options)
Lock the buffer for (potentially) reading / writing.
PixelFormat getFormat() const
Gets the native pixel format of this buffer.
#define _OgreExport
Definition: OgrePlatform.h:257
Specialisation of HardwareBuffer for a pixel buffer.
void blitFromMemory(const PixelBox &src)
Convenience function that blits a pixelbox from memory to the entire buffer.
PixelFormat
The pixel format used for images, textures, and render surfaces.
Structure used to define a box in a 3-D integer space.
Definition: OgreCommon.h:659
PixelBox mCurrentLock
Currently locked region (local coords)
void blitToMemory(const PixelBox &dst)
Convenience function that blits this entire buffer to a pixelbox.
This class represents a RenderTarget that renders to a Texture.
uint32 getWidth() const
Gets the width of this buffer.
Usage
Enums describing buffer usage; not mutually exclusive.
uint32 getHeight() const
Gets the height of this buffer.
Abstract class defining common features of hardware buffers.
Shared pointer implementation used to share pixel buffers.
LockOptions
Locking options.
unsigned int uint32
Definition: OgrePlatform.h:359
uint32 getDepth() const
Gets the depth of this buffer.
Reference-counted shared pointer, used for objects where implicit destruction is required.
A primitive describing a volume (3D), image (2D) or line (1D) of pixels in memory.
PixelFormat mFormat
Internal format.

Copyright © 2012 Torus Knot Software Ltd
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Last modified Tue Mar 18 2014 19:15:25