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comparison: gfx/angle/src/libGLESv2/renderer/VertexBuffer.h
gfx/angle/src/libGLESv2/renderer/VertexBuffer.h
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- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:ec177f988e9b |
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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 // VertexBuffer.h: Defines the abstract VertexBuffer class and VertexBufferInterface | |
| 8 // class with derivations, classes that perform graphics API agnostic vertex buffer operations. | |
| 9 | |
| 10 #ifndef LIBGLESV2_RENDERER_VERTEXBUFFER_H_ | |
| 11 #define LIBGLESV2_RENDERER_VERTEXBUFFER_H_ | |
| 12 | |
| 13 #include "common/angleutils.h" | |
| 14 | |
| 15 namespace gl | |
| 16 { | |
| 17 class VertexAttribute; | |
| 18 } | |
| 19 | |
| 20 namespace rx | |
| 21 { | |
| 22 class Renderer; | |
| 23 | |
| 24 class VertexBuffer | |
| 25 { | |
| 26 public: | |
| 27 VertexBuffer(); | |
| 28 virtual ~VertexBuffer(); | |
| 29 | |
| 30 virtual bool initialize(unsigned int size, bool dynamicUsage) = 0; | |
| 31 | |
| 32 virtual bool storeVertexAttributes(const gl::VertexAttribute &attrib, GLint start, GLsizei count, | |
| 33 GLsizei instances, unsigned int offset) = 0; | |
| 34 virtual bool storeRawData(const void* data, unsigned int size, unsigned int offset) = 0; | |
| 35 | |
| 36 virtual bool getSpaceRequired(const gl::VertexAttribute &attrib, GLsizei count, GLsizei instances, | |
| 37 unsigned int *outSpaceRequired) const = 0; | |
| 38 | |
| 39 virtual bool requiresConversion(const gl::VertexAttribute &attrib) const = 0; | |
| 40 | |
| 41 virtual unsigned int getBufferSize() const = 0; | |
| 42 virtual bool setBufferSize(unsigned int size) = 0; | |
| 43 virtual bool discard() = 0; | |
| 44 | |
| 45 unsigned int getSerial() const; | |
| 46 | |
| 47 protected: | |
| 48 void updateSerial(); | |
| 49 | |
| 50 private: | |
| 51 DISALLOW_COPY_AND_ASSIGN(VertexBuffer); | |
| 52 | |
| 53 unsigned int mSerial; | |
| 54 static unsigned int mNextSerial; | |
| 55 }; | |
| 56 | |
| 57 class VertexBufferInterface | |
| 58 { | |
| 59 public: | |
| 60 VertexBufferInterface(rx::Renderer *renderer, bool dynamic); | |
| 61 virtual ~VertexBufferInterface(); | |
| 62 | |
| 63 bool reserveVertexSpace(const gl::VertexAttribute &attribute, GLsizei count, GLsizei instances); | |
| 64 bool reserveRawDataSpace(unsigned int size); | |
| 65 | |
| 66 unsigned int getBufferSize() const; | |
| 67 | |
| 68 unsigned int getSerial() const; | |
| 69 | |
| 70 virtual bool storeVertexAttributes(const gl::VertexAttribute &attrib, GLint start, GLsizei count, GLsizei instances, | |
| 71 unsigned int *outStreamOffset); | |
| 72 virtual bool storeRawData(const void* data, unsigned int size, unsigned int *outStreamOffset); | |
| 73 | |
| 74 VertexBuffer* getVertexBuffer() const; | |
| 75 | |
| 76 protected: | |
| 77 virtual bool reserveSpace(unsigned int size) = 0; | |
| 78 | |
| 79 unsigned int getWritePosition() const; | |
| 80 void setWritePosition(unsigned int writePosition); | |
| 81 | |
| 82 bool discard(); | |
| 83 | |
| 84 bool setBufferSize(unsigned int size); | |
| 85 | |
| 86 private: | |
| 87 DISALLOW_COPY_AND_ASSIGN(VertexBufferInterface); | |
| 88 | |
| 89 rx::Renderer *const mRenderer; | |
| 90 | |
| 91 VertexBuffer* mVertexBuffer; | |
| 92 | |
| 93 unsigned int mWritePosition; | |
| 94 unsigned int mReservedSpace; | |
| 95 bool mDynamic; | |
| 96 }; | |
| 97 | |
| 98 class StreamingVertexBufferInterface : public VertexBufferInterface | |
| 99 { | |
| 100 public: | |
| 101 StreamingVertexBufferInterface(rx::Renderer *renderer, std::size_t initialSize); | |
| 102 ~StreamingVertexBufferInterface(); | |
| 103 | |
| 104 protected: | |
| 105 bool reserveSpace(unsigned int size); | |
| 106 }; | |
| 107 | |
| 108 class StaticVertexBufferInterface : public VertexBufferInterface | |
| 109 { | |
| 110 public: | |
| 111 explicit StaticVertexBufferInterface(rx::Renderer *renderer); | |
| 112 ~StaticVertexBufferInterface(); | |
| 113 | |
| 114 bool storeVertexAttributes(const gl::VertexAttribute &attrib, GLint start, GLsizei count, GLsizei instances, | |
| 115 unsigned int *outStreamOffset); | |
| 116 | |
| 117 bool lookupAttribute(const gl::VertexAttribute &attribute, unsigned int* outStreamOffset); | |
| 118 | |
| 119 protected: | |
| 120 bool reserveSpace(unsigned int size); | |
| 121 | |
| 122 private: | |
| 123 struct VertexElement | |
| 124 { | |
| 125 GLenum type; | |
| 126 GLint size; | |
| 127 GLsizei stride; | |
| 128 bool normalized; | |
| 129 int attributeOffset; | |
| 130 | |
| 131 unsigned int streamOffset; | |
| 132 }; | |
| 133 | |
| 134 std::vector<VertexElement> mCache; | |
| 135 }; | |
| 136 | |
| 137 } | |
| 138 | |
| 139 #endif // LIBGLESV2_RENDERER_VERTEXBUFFER_H_ |
