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glVertexBuffer.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_GL_VERTEX_BUFFER_H
26 #define OPENSUBDIV3_OSD_GL_VERTEX_BUFFER_H
27
28 #include "../version.h"
29
30 #include "../osd/opengl.h"
31 #include <cstddef>
32
33 namespace OpenSubdiv {
34 namespace OPENSUBDIV_VERSION {
35
36 namespace Osd {
37
44 class GLVertexBuffer {
45 public:
47 static GLVertexBuffer * Create(int numElements, int numVertices,
48 void *deviceContext = NULL);
49
51 ~GLVertexBuffer();
52
55 void UpdateData(const float *src, int startVertex, int numVertices,
56 void *deviceContext = NULL);
57
59 int GetNumElements() const;
60
62 int GetNumVertices() const;
63
65 GLuint BindVBO(void *deviceContext = NULL);
66
67 protected:
69 GLVertexBuffer(int numElements, int numVertices);
70
73 bool allocate();
74
75 private:
76 int _numElements;
77 int _numVertices;
78 GLuint _vbo;
79 };
80
81 } // end namespace Osd
82
83 } // end namespace OPENSUBDIV_VERSION
84 using namespace OPENSUBDIV_VERSION;
85
86 } // end namespace OpenSubdiv
87
88 #endif // OPENSUBDIV3_OSD_GL_VERTEX_BUFFER_H
OpenSubdiv::OPENSUBDIV_VERSION::Osd::GLVertexBuffer::~GLVertexBuffer
~GLVertexBuffer()
Destructor.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::GLVertexBuffer::GLVertexBuffer
GLVertexBuffer(int numElements, int numVertices)
Constructor.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::GLVertexBuffer::BindVBO
GLuint BindVBO(void *deviceContext=NULL)
Returns the GL buffer object.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::GLVertexBuffer::UpdateData
void UpdateData(const float *src, int startVertex, int numVertices, void *deviceContext=NULL)
OpenSubdiv::OPENSUBDIV_VERSION::Osd::GLVertexBuffer::GetNumVertices
int GetNumVertices() const
Returns how many vertices allocated in this vertex buffer.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::GLVertexBuffer::allocate
bool allocate()
OpenSubdiv::OPENSUBDIV_VERSION::Osd::GLVertexBuffer::Create
static GLVertexBuffer * Create(int numElements, int numVertices, void *deviceContext=NULL)
Creator. Returns NULL if error.
OpenSubdiv
Definition: error.h:30
OpenSubdiv::OPENSUBDIV_VERSION::Osd::GLVertexBuffer::GetNumElements
int GetNumElements() const
Returns how many elements defined in this vertex buffer.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::GLVertexBuffer
Concrete vertex buffer class for GLSL subdivision and OpenGL drawing.
Definition: glVertexBuffer.h:44