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1 // |
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2 // Copyright (c) 2002-2012 The ANGLE Project Authors. All rights reserved. |
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3 // Use of this source code is governed by a BSD-style license that can be |
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4 // found in the LICENSE file. |
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5 // |
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6 |
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7 // VertexBuffer9.h: Defines the D3D9 VertexBuffer implementation. |
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8 |
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9 #ifndef LIBGLESV2_RENDERER_VERTEXBUFFER9_H_ |
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10 #define LIBGLESV2_RENDERER_VERTEXBUFFER9_H_ |
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11 |
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12 #include "libGLESv2/renderer/VertexBuffer.h" |
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13 |
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14 namespace rx |
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15 { |
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16 class Renderer9; |
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17 |
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18 class VertexBuffer9 : public VertexBuffer |
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19 { |
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20 public: |
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21 explicit VertexBuffer9(rx::Renderer9 *const renderer); |
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22 virtual ~VertexBuffer9(); |
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23 |
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24 virtual bool initialize(unsigned int size, bool dynamicUsage); |
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25 |
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26 static VertexBuffer9 *makeVertexBuffer9(VertexBuffer *vertexBuffer); |
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27 |
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28 virtual bool storeVertexAttributes(const gl::VertexAttribute &attrib, GLint start, GLsizei count, GLsizei instances, |
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29 unsigned int offset); |
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30 virtual bool storeRawData(const void* data, unsigned int size, unsigned int offset); |
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31 |
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32 virtual bool getSpaceRequired(const gl::VertexAttribute &attrib, GLsizei count, GLsizei instances, unsigned int *outSpaceRequired) const; |
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33 |
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34 virtual bool requiresConversion(const gl::VertexAttribute &attrib) const; |
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35 |
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36 unsigned int getVertexSize(const gl::VertexAttribute &attrib) const; |
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37 D3DDECLTYPE getDeclType(const gl::VertexAttribute &attrib) const; |
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38 |
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39 virtual unsigned int getBufferSize() const; |
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40 virtual bool setBufferSize(unsigned int size); |
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41 virtual bool discard(); |
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42 |
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43 IDirect3DVertexBuffer9 *getBuffer() const; |
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44 |
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45 private: |
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46 DISALLOW_COPY_AND_ASSIGN(VertexBuffer9); |
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47 |
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48 rx::Renderer9 *const mRenderer; |
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49 |
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50 IDirect3DVertexBuffer9 *mVertexBuffer; |
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51 unsigned int mBufferSize; |
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52 bool mDynamicUsage; |
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53 |
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54 // Attribute format conversion |
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55 enum { NUM_GL_VERTEX_ATTRIB_TYPES = 6 }; |
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56 |
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57 struct FormatConverter |
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58 { |
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59 bool identity; |
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60 std::size_t outputElementSize; |
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61 void (*convertArray)(const void *in, std::size_t stride, std::size_t n, void *out); |
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62 D3DDECLTYPE d3dDeclType; |
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63 }; |
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64 |
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65 static bool mTranslationsInitialized; |
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66 static void initializeTranslations(DWORD declTypes); |
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67 |
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68 // [GL types as enumerated by typeIndex()][normalized][size - 1] |
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69 static FormatConverter mFormatConverters[NUM_GL_VERTEX_ATTRIB_TYPES][2][4]; |
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70 |
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71 struct TranslationDescription |
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72 { |
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73 DWORD capsFlag; |
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74 FormatConverter preferredConversion; |
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75 FormatConverter fallbackConversion; |
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76 }; |
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77 |
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78 // This table is used to generate mFormatConverters. |
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79 // [GL types as enumerated by typeIndex()][normalized][size - 1] |
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80 static const TranslationDescription mPossibleTranslations[NUM_GL_VERTEX_ATTRIB_TYPES][2][4]; |
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81 |
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82 static unsigned int typeIndex(GLenum type); |
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83 static const FormatConverter &formatConverter(const gl::VertexAttribute &attribute); |
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84 |
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85 static bool spaceRequired(const gl::VertexAttribute &attrib, std::size_t count, GLsizei instances, |
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86 unsigned int *outSpaceRequired); |
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87 }; |
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88 |
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89 } |
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90 |
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91 #endif // LIBGLESV2_RENDERER_VERTEXBUFFER9_H_ |