mtlVertexBuffer.h
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1 //
2 // Copyright 2013 Pixar
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4 // Licensed under the Apache License, Version 2.0 (the "Apache License")
5 // with the following modification; you may not use this file except in
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24 
25 #ifndef OPENSUBDIV3_OSD_MTL_VERTEX_BUFFER_H
26 #define OPENSUBDIV3_OSD_MTL_VERTEX_BUFFER_H
27 
28 #include "../version.h"
29 #include "../osd/mtlCommon.h"
30 
31 @protocol MTLDevice;
32 @protocol MTLBuffer;
33 
34 namespace OpenSubdiv
35 {
36 namespace OPENSUBDIV_VERSION
37 {
38 namespace Osd
39 {
41  {
42  public:
43  static CPUMTLVertexBuffer* Create(int numElements, int numVertices, MTLContext* context);
44 
45  void UpdateData(const float* src, int startVertex, int numVertices, MTLContext* context);
46 
47  int GetNumElements() const
48  {
49  return _numElements;
50  }
51 
52  int GetNumVertices() const
53  {
54  return _numVertices;
55  }
56 
57  float* BindCpuBuffer();
58  id<MTLBuffer> BindMTLBuffer(MTLContext* context);
59 
60  id<MTLBuffer> BindVBO(MTLContext* context)
61  {
62  return BindMTLBuffer(context);
63  }
64 
65  protected:
66 
67  CPUMTLVertexBuffer(int numElements, int numVertices);
68 
69  bool allocate(MTLContext* context);
70 
71  private:
72  int _numElements;
73  int _numVertices;
74  id<MTLBuffer> _buffer;
75  bool _dirty;
76  };
77 
78 } //end namespace Osd
79 } //end namespace OPENSUBDIV_VERSION
80  using namespace OPENSUBDIV_VERSION;
81 } //end namespace OpenSubdiv
82 
83 
84 #endif // OPENSUBDIV3_OSD_MTL_VERTEX_BUFFER_H
id< MTLBuffer > BindVBO(MTLContext *context)