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) 2000-2013 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 13 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 14 copies of the Software, and to permit persons to whom the Software is 15 furnished to do so, subject to the following conditions: 16 17 The above copyright notice and this permission notice shall be included in 18 all copies or substantial portions of the Software. 19 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 23 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 24 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 25 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 26 THE SOFTWARE. 27 ----------------------------------------------------------------------------- 28 */ 29 30 #ifndef __GLESDefaultHardwareBufferManager_H__ 31 #define __GLESDefaultHardwareBufferManager_H__ 32 33 #include "OgreGLESPrerequisites.h" 34 #include "OgreHardwareBufferManager.h" 35 #include "OgreHardwareVertexBuffer.h" 36 #include "OgreHardwareIndexBuffer.h" 37 38 namespace Ogre { 39 /// Specialisation of HardwareVertexBuffer for emulation 40 class _OgreGLESExport GLESDefaultHardwareVertexBuffer : public HardwareVertexBuffer 41 { 42 protected: 43 unsigned char* mData; 44 /** See HardwareBuffer. */ 45 void* lockImpl(size_t offset, size_t length, LockOptions options); 46 /** See HardwareBuffer. */ 47 void unlockImpl(void); 48 49 public: 50 GLESDefaultHardwareVertexBuffer(size_t vertexSize, size_t numVertices, 51 HardwareBuffer::Usage usage); 52 GLESDefaultHardwareVertexBuffer(HardwareBufferManagerBase* mgr, size_t vertexSize, size_t numVertices, 53 HardwareBuffer::Usage usage); 54 virtual ~GLESDefaultHardwareVertexBuffer(); 55 /** See HardwareBuffer. */ 56 void readData(size_t offset, size_t length, void* pDest); 57 /** See HardwareBuffer. */ 58 void writeData(size_t offset, size_t length, const void* pSource, 59 bool discardWholeBuffer = false); 60 /** Override HardwareBuffer to turn off all shadowing. */ 61 void* lock(size_t offset, size_t length, LockOptions options); 62 /** Override HardwareBuffer to turn off all shadowing. */ 63 void unlock(void); 64 getDataPtr(size_t offset)65 void* getDataPtr(size_t offset) const { return (void*)(mData + offset); } 66 }; 67 68 /// Specialisation of HardwareIndexBuffer for emulation 69 class _OgreGLESExport GLESDefaultHardwareIndexBuffer : public HardwareIndexBuffer 70 { 71 protected: 72 unsigned char* mData; 73 /** See HardwareBuffer. */ 74 void* lockImpl(size_t offset, size_t length, LockOptions options); 75 /** See HardwareBuffer. */ 76 void unlockImpl(void); 77 78 public: 79 GLESDefaultHardwareIndexBuffer(IndexType idxType, size_t numIndexes, HardwareBuffer::Usage usage); 80 virtual ~GLESDefaultHardwareIndexBuffer(); 81 /** See HardwareBuffer. */ 82 void readData(size_t offset, size_t length, void* pDest); 83 /** See HardwareBuffer. */ 84 void writeData(size_t offset, size_t length, const void* pSource, 85 bool discardWholeBuffer = false); 86 /** Override HardwareBuffer to turn off all shadowing. */ 87 void* lock(size_t offset, size_t length, LockOptions options); 88 /** Override HardwareBuffer to turn off all shadowing. */ 89 void unlock(void); 90 getDataPtr(size_t offset)91 void* getDataPtr(size_t offset) const { return (void*)(mData + offset); } 92 }; 93 94 /** Specialisation of HardwareBufferManager to emulate hardware buffers. 95 @remarks 96 You might want to instantiate this class if you want to utilise 97 classes like MeshSerializer without having initialised the 98 rendering system (which is required to create a 'real' hardware 99 buffer manager. 100 */ 101 class _OgreGLESExport GLESDefaultHardwareBufferManagerBase : public HardwareBufferManagerBase 102 { 103 public: 104 GLESDefaultHardwareBufferManagerBase(); 105 virtual ~GLESDefaultHardwareBufferManagerBase(); 106 /// Creates a vertex buffer 107 HardwareVertexBufferSharedPtr 108 createVertexBuffer(size_t vertexSize, size_t numVerts, 109 HardwareBuffer::Usage usage, bool useShadowBuffer = false); 110 /// Create a hardware vertex buffer 111 HardwareIndexBufferSharedPtr 112 createIndexBuffer(HardwareIndexBuffer::IndexType itype, size_t numIndexes, 113 HardwareBuffer::Usage usage, bool useShadowBuffer = false); 114 /// Create a render to vertex buffer 115 RenderToVertexBufferSharedPtr createRenderToVertexBuffer(void); 116 HardwareUniformBufferSharedPtr 117 createUniformBuffer(size_t sizeBytes, HardwareBuffer::Usage usage,bool useShadowBuffer, const String& name = "") 118 { 119 OGRE_EXCEPT(Exception::ERR_RENDERINGAPI_ERROR, 120 "GLES does not support uniform buffer objects", 121 "GLESDefaultHardwareBufferManagerBase::createUniformBuffer"); 122 } 123 HardwareCounterBufferSharedPtr createCounterBuffer(size_t sizeBytes, 124 HardwareBuffer::Usage usage = HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY_DISCARDABLE, 125 bool useShadowBuffer = false, const String& name = "") 126 { 127 OGRE_EXCEPT(Exception::ERR_RENDERINGAPI_ERROR, 128 "GLES does not support atomic counter buffers", 129 "GLESDefaultHardwareBufferManagerBase::createCounterBuffer"); 130 } 131 }; 132 133 /// GLESDefaultHardwareBufferManagerBase as a Singleton 134 class _OgreGLESExport GLESDefaultHardwareBufferManager : public HardwareBufferManager 135 { 136 public: GLESDefaultHardwareBufferManager()137 GLESDefaultHardwareBufferManager() 138 : HardwareBufferManager(OGRE_NEW GLESDefaultHardwareBufferManagerBase()) 139 { 140 141 } ~GLESDefaultHardwareBufferManager()142 ~GLESDefaultHardwareBufferManager() 143 { 144 OGRE_DELETE mImpl; 145 } 146 HardwareUniformBufferSharedPtr 147 createUniformBuffer(size_t sizeBytes, HardwareBuffer::Usage usage,bool useShadowBuffer, const String& name = "") 148 { 149 OGRE_EXCEPT(Exception::ERR_RENDERINGAPI_ERROR, 150 "GLES does not support render to vertex buffer objects", 151 "GLESDefaultHardwareBufferManager::createUniformBuffer"); 152 } 153 }; 154 } 155 156 #endif 157