1 //
2 //   Copyright 2015 Pixar
3 //
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
6 //   compliance with the Apache License and the following modification to it:
7 //   Section 6. Trademarks. is deleted and replaced with:
8 //
9 //   6. Trademarks. This License does not grant permission to use the trade
10 //      names, trademarks, service marks, or product names of the Licensor
11 //      and its affiliates, except as required to comply with Section 4(c) of
12 //      the License and to reproduce the content of the NOTICE file.
13 //
14 //   You may obtain a copy of the Apache License at
15 //
16 //       http://www.apache.org/licenses/LICENSE-2.0
17 //
18 //   Unless required by applicable law or agreed to in writing, software
19 //   distributed under the Apache License with the above modification is
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22 //   language governing permissions and limitations under the Apache License.
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24 
25 #ifndef OPENSUBDIV3_OSD_GL_PATCH_TABLE_H
26 #define OPENSUBDIV3_OSD_GL_PATCH_TABLE_H
27 
28 #include "../version.h"
29 
30 #include <vector>
31 #include "../far/patchDescriptor.h"
32 #include "../osd/nonCopyable.h"
33 #include "../osd/types.h"
34 
35 struct ID3D11Buffer;
36 struct ID3D11ShaderResourceView;
37 struct ID3D11Device;
38 struct ID3D11DeviceContext;
39 
40 namespace OpenSubdiv {
41 namespace OPENSUBDIV_VERSION {
42 
43 namespace Far{
44     class PatchTable;
45 };
46 
47 namespace Osd {
48 
49 class D3D11PatchTable : private NonCopyable<D3D11PatchTable> {
50 public:
51     typedef ID3D11Buffer * VertexBufferBinding;
52 
53     D3D11PatchTable();
54     ~D3D11PatchTable();
55 
56     template<typename DEVICE_CONTEXT>
Create(Far::PatchTable const * farPatchTable,DEVICE_CONTEXT context)57     static D3D11PatchTable *Create(Far::PatchTable const *farPatchTable,
58                                    DEVICE_CONTEXT context) {
59         return Create(farPatchTable, context->GetDeviceContext());
60     }
61 
62     static D3D11PatchTable *Create(Far::PatchTable const *farPatchTable,
63                                    ID3D11DeviceContext *deviceContext);
64 
GetPatchArrays()65     PatchArrayVector const &GetPatchArrays() const {
66         return _patchArrays;
67     }
68 
69     /// Returns the index buffer containing the patch control vertices
GetPatchIndexBuffer()70     ID3D11Buffer* GetPatchIndexBuffer() const {
71         return _indexBuffer;
72     }
73 
74     /// Returns the SRV containing the patch parameter
GetPatchParamSRV()75     ID3D11ShaderResourceView* GetPatchParamSRV() const {
76         return _patchParamBufferSRV;
77     }
78 
79 protected:
80     // allocate buffers from patchTable
81     bool allocate(Far::PatchTable const *farPatchTable,
82                   ID3D11DeviceContext *deviceContext);
83 
84     PatchArrayVector _patchArrays;
85 
86     ID3D11Buffer             *_indexBuffer;
87     ID3D11Buffer             *_patchParamBuffer;
88     ID3D11ShaderResourceView *_patchParamBufferSRV;
89 };
90 
91 
92 }  // end namespace Osd
93 
94 }  // end namespace OPENSUBDIV_VERSION
95 using namespace OPENSUBDIV_VERSION;
96 
97 }  // end namespace OpenSubdiv
98 
99 #endif  // OPENSUBDIV3_OSD_GL_PATCH_TABLE_H
100