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comparison: gfx/angle/src/libGLESv2/renderer/IndexBuffer.h
gfx/angle/src/libGLESv2/renderer/IndexBuffer.h
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| 1 // | |
| 2 // Copyright (c) 2002-2012 The ANGLE Project Authors. All rights reserved. | |
| 3 // Use of this source code is governed by a BSD-style license that can be | |
| 4 // found in the LICENSE file. | |
| 5 // | |
| 6 | |
| 7 // IndexBuffer.h: Defines the abstract IndexBuffer class and IndexBufferInterface | |
| 8 // class with derivations, classes that perform graphics API agnostic index buffer operations. | |
| 9 | |
| 10 #ifndef LIBGLESV2_RENDERER_INDEXBUFFER_H_ | |
| 11 #define LIBGLESV2_RENDERER_INDEXBUFFER_H_ | |
| 12 | |
| 13 #include "common/angleutils.h" | |
| 14 #include "libGLESv2/renderer/IndexRangeCache.h" | |
| 15 | |
| 16 namespace rx | |
| 17 { | |
| 18 class Renderer; | |
| 19 | |
| 20 class IndexBuffer | |
| 21 { | |
| 22 public: | |
| 23 IndexBuffer(); | |
| 24 virtual ~IndexBuffer(); | |
| 25 | |
| 26 virtual bool initialize(unsigned int bufferSize, GLenum indexType, bool dynamic) = 0; | |
| 27 | |
| 28 virtual bool mapBuffer(unsigned int offset, unsigned int size, void** outMappedMemory) = 0; | |
| 29 virtual bool unmapBuffer() = 0; | |
| 30 | |
| 31 virtual bool discard() = 0; | |
| 32 | |
| 33 virtual GLenum getIndexType() const = 0; | |
| 34 virtual unsigned int getBufferSize() const = 0; | |
| 35 virtual bool setSize(unsigned int bufferSize, GLenum indexType) = 0; | |
| 36 | |
| 37 unsigned int getSerial() const; | |
| 38 | |
| 39 protected: | |
| 40 void updateSerial(); | |
| 41 | |
| 42 private: | |
| 43 DISALLOW_COPY_AND_ASSIGN(IndexBuffer); | |
| 44 | |
| 45 unsigned int mSerial; | |
| 46 static unsigned int mNextSerial; | |
| 47 }; | |
| 48 | |
| 49 class IndexBufferInterface | |
| 50 { | |
| 51 public: | |
| 52 IndexBufferInterface(Renderer *renderer, bool dynamic); | |
| 53 virtual ~IndexBufferInterface(); | |
| 54 | |
| 55 virtual bool reserveBufferSpace(unsigned int size, GLenum indexType) = 0; | |
| 56 | |
| 57 GLenum getIndexType() const; | |
| 58 unsigned int getBufferSize() const; | |
| 59 | |
| 60 unsigned int getSerial() const; | |
| 61 | |
| 62 bool mapBuffer(unsigned int size, void** outMappedMemory, unsigned int *streamOffset); | |
| 63 bool unmapBuffer(); | |
| 64 | |
| 65 IndexBuffer *getIndexBuffer() const; | |
| 66 | |
| 67 protected: | |
| 68 unsigned int getWritePosition() const; | |
| 69 void setWritePosition(unsigned int writePosition); | |
| 70 | |
| 71 bool discard(); | |
| 72 | |
| 73 bool setBufferSize(unsigned int bufferSize, GLenum indexType); | |
| 74 | |
| 75 private: | |
| 76 DISALLOW_COPY_AND_ASSIGN(IndexBufferInterface); | |
| 77 | |
| 78 rx::Renderer *const mRenderer; | |
| 79 | |
| 80 IndexBuffer* mIndexBuffer; | |
| 81 | |
| 82 unsigned int mWritePosition; | |
| 83 bool mDynamic; | |
| 84 }; | |
| 85 | |
| 86 class StreamingIndexBufferInterface : public IndexBufferInterface | |
| 87 { | |
| 88 public: | |
| 89 StreamingIndexBufferInterface(Renderer *renderer); | |
| 90 ~StreamingIndexBufferInterface(); | |
| 91 | |
| 92 virtual bool reserveBufferSpace(unsigned int size, GLenum indexType); | |
| 93 }; | |
| 94 | |
| 95 class StaticIndexBufferInterface : public IndexBufferInterface | |
| 96 { | |
| 97 public: | |
| 98 explicit StaticIndexBufferInterface(Renderer *renderer); | |
| 99 ~StaticIndexBufferInterface(); | |
| 100 | |
| 101 virtual bool reserveBufferSpace(unsigned int size, GLenum indexType); | |
| 102 | |
| 103 IndexRangeCache *getIndexRangeCache(); | |
| 104 | |
| 105 private: | |
| 106 IndexRangeCache mIndexRangeCache; | |
| 107 }; | |
| 108 | |
| 109 } | |
| 110 | |
| 111 #endif // LIBGLESV2_RENDERER_INDEXBUFFER_H_ |
