opensubdiv/osd/cpuGLVertexBuffer.h Source File

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cpuGLVertexBuffer.h
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1 //
2 // Copyright 2013 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
25 #ifndef OPENSUBDIV3_OSD_CPU_GL_VERTEX_BUFFER_H
26 #define OPENSUBDIV3_OSD_CPU_GL_VERTEX_BUFFER_H
27
28 #include "../version.h"
29
30 #include <cstddef>
31 #include "../osd/opengl.h"
32
33 namespace OpenSubdiv {
34 namespace OPENSUBDIV_VERSION {
35
36 namespace Osd {
37
47 class CpuGLVertexBuffer {
48 public:
50 static CpuGLVertexBuffer * Create(int numElements, int numVertices,
51 void *deviceContext = NULL);
52
54 ~CpuGLVertexBuffer();
55
58 void UpdateData(const float *src, int startVertex, int numVertices,
59 void *deviceContext = NULL);
60
62 int GetNumElements() const;
63
65 int GetNumVertices() const;
66
69 float * BindCpuBuffer();
70
73 GLuint BindVBO(void *deviceContext = NULL);
74
75 protected:
77 CpuGLVertexBuffer(int numElements, int numVertices);
78
80 bool allocate();
81
82 private:
83 int _numElements;
84 int _numVertices;
85 GLuint _vbo;
86 float *_cpuBuffer;
87 bool _dataDirty;
88 };
89
90 } // end namespace Osd
91
92 } // end namespace OPENSUBDIV_VERSION
93 using namespace OPENSUBDIV_VERSION;
94
95 } // end namespace OpenSubdiv
96
97 #endif // OPENSUBDIV3_OSD_CPU_GL_VERTEX_BUFFER_H
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::BindCpuBuffer
float * BindCpuBuffer()
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::~CpuGLVertexBuffer
~CpuGLVertexBuffer()
Destructor.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::CpuGLVertexBuffer
CpuGLVertexBuffer(int numElements, int numVertices)
Constructor.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::UpdateData
void UpdateData(const float *src, int startVertex, int numVertices, void *deviceContext=NULL)
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::Create
static CpuGLVertexBuffer * Create(int numElements, int numVertices, void *deviceContext=NULL)
Creator. Returns NULL if error.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::BindVBO
GLuint BindVBO(void *deviceContext=NULL)
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::GetNumVertices
int GetNumVertices() const
Returns how many vertices allocated in this vertex buffer.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::GetNumElements
int GetNumElements() const
Returns how many elements defined in this vertex buffer.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer
Concrete vertex buffer class for cpu subvision and OpenGL drawing.
Definition: cpuGLVertexBuffer.h:47
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::allocate
bool allocate()
Allocates VBO for this buffer. Returns true if success.