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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
Definition limits.h:32
OpenSubdiv::OPENSUBDIV_VERSION::Osd::GLVertexBuffer
Concrete vertex buffer class for GLSL subdivision and OpenGL drawing.
Definition glVertexBuffer.h:44
OpenSubdiv::OPENSUBDIV_VERSION::Osd::GLVertexBuffer::~GLVertexBuffer
~GLVertexBuffer()
Destructor.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::GLVertexBuffer::BindVBO
GLuint BindVBO(void *deviceContext=NULL)
Returns the GL buffer object.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::GLVertexBuffer::GetNumElements
int GetNumElements() const
Returns how many elements defined in this vertex buffer.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::GLVertexBuffer::UpdateData
void UpdateData(const float *src, int startVertex, int numVertices, void *deviceContext=NULL)
OpenSubdiv::OPENSUBDIV_VERSION::Osd::GLVertexBuffer::GLVertexBuffer
GLVertexBuffer(int numElements, int numVertices)
Constructor.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::GLVertexBuffer::GetNumVertices
int GetNumVertices() const
Returns how many vertices allocated in this vertex buffer.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::GLVertexBuffer::Create
static GLVertexBuffer * Create(int numElements, int numVertices, void *deviceContext=NULL)
Creator. Returns NULL if error.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::GLVertexBuffer::allocate
bool allocate()