1 //
2 // Copyright 2020 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
20 // distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
21 // KIND, either express or implied. See the Apache License for the specific
22 // language governing permissions and limitations under the Apache License.
23 //
24 #ifndef PXR_IMAGING_HGI_GL_BUFFER_H
25 #define PXR_IMAGING_HGI_GL_BUFFER_H
26 
27 #include "pxr/pxr.h"
28 #include "pxr/imaging/hgiGL/api.h"
29 #include "pxr/imaging/hgi/buffer.h"
30 
31 
32 PXR_NAMESPACE_OPEN_SCOPE
33 
34 /// \class HgiGLBuffer
35 ///
36 /// Represents an OpenGL GPU buffer resource.
37 ///
38 class HgiGLBuffer final : public HgiBuffer
39 {
40 public:
41     HGIGL_API
42     ~HgiGLBuffer() override;
43 
44     HGIGL_API
45     size_t GetByteSizeOfResource() const override;
46 
47     HGIGL_API
48     uint64_t GetRawResource() const override;
49 
50     HGIGL_API
51     void* GetCPUStagingAddress() override;
52 
GetBufferId()53     uint32_t GetBufferId() const {return _bufferId;}
54 
55     /// Returns the bindless gpu address (caller must verify extension support)
56     HGIGL_API
57     uint64_t GetBindlessGPUAddress();
58 
59 protected:
60     friend class HgiGL;
61 
62     HGIGL_API
63     HgiGLBuffer(HgiBufferDesc const & desc);
64 
65 private:
66     HgiGLBuffer() = delete;
67     HgiGLBuffer & operator=(const HgiGLBuffer&) = delete;
68     HgiGLBuffer(const HgiGLBuffer&) = delete;
69 
70     uint32_t _bufferId;
71     void* _mapped;
72     void* _cpuStaging;
73     uint64_t _bindlessGPUAddress;
74 };
75 
76 
77 PXR_NAMESPACE_CLOSE_SCOPE
78 
79 #endif
80