mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
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83 lines
2.4 KiB
C++
83 lines
2.4 KiB
C++
//
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// Copyright 2013 Pixar
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License
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// and the following modification to it: Section 6 Trademarks.
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// deleted and replaced with:
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//
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// 6. Trademarks. This License does not grant permission to use the
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// trade names, trademarks, service marks, or product names of the
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// Licensor and its affiliates, except as required for reproducing
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// the content of the NOTICE file.
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//
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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// either express or implied. See the License for the specific
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// language governing permissions and limitations under the
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// License.
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//
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#ifndef OSD_GL_VERTEX_BUFFER_H
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#define OSD_GL_VERTEX_BUFFER_H
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#include "../version.h"
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#include "../osd/opengl.h"
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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///
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/// \brief Concrete vertex buffer class for GLSL subvision and OpenGL drawing.
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///
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/// OsdGLVertexBuffer implements OsdGLVertexBufferInterface. An instance
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/// of this buffer class can be passed to OsdGLComputeController
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/// and OsdGLDrawController
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///
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class OsdGLVertexBuffer {
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public:
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/// Creator. Returns NULL if error.
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static OsdGLVertexBuffer * Create(int numElements, int numVertices);
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/// Destructor.
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~OsdGLVertexBuffer();
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/// This method is meant to be used in client code in order to provide coarse
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/// vertices data to Osd.
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void UpdateData(const float *src, int startVertex, int numVertices);
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/// Returns how many elements defined in this vertex buffer.
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int GetNumElements() const;
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/// Returns how many vertices allocated in this vertex buffer.
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int GetNumVertices() const;
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/// Returns the GL buffer object.
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GLuint BindVBO();
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protected:
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/// Constructor.
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OsdGLVertexBuffer(int numElements, int numVertices);
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/// Allocates VBO for this buffer.
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/// Returns true if success.
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bool allocate();
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private:
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int _numElements;
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int _numVertices;
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GLuint _vbo;
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};
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} // end namespace OPENSUBDIV_VERSION
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using namespace OPENSUBDIV_VERSION;
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} // end namespace OpenSubdiv
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#endif // OSD_GL_VERTEX_BUFFER_H
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