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Copyright 2013 Pixar
Licensed under the Apache License, Version 2.0 (the "Apache License")
with the following modification; you may not use this file except in
compliance with the Apache License and the following modification to it:
Section 6. Trademarks. is deleted and replaced with:
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor
and its affiliates, except as required to comply with Section 4(c) of
the License and to reproduce the content of the NOTICE file.
You may obtain a copy of the Apache License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the Apache License with the above modification is
distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied. See the Apache License for the specific
language governing permissions and limitations under the Apache License.
101 lines
3.1 KiB
C++
101 lines
3.1 KiB
C++
//
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//
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// Copyright 2013 Pixar
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//
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// Licensed under the Apache License, Version 2.0 (the "Apache License")
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// with the following modification; you may not use this file except in
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// compliance with the Apache License and the following modification to it:
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// Section 6. Trademarks. is deleted and replaced with:
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//
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// 6. Trademarks. This License does not grant permission to use the trade
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// names, trademarks, service marks, or product names of the Licensor
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// and its affiliates, except as required to comply with Section 4(c) of
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// the License and to reproduce the content of the NOTICE file.
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//
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// You may obtain a copy of the Apache 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, software
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// distributed under the Apache License with the above modification is
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// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the Apache License for the specific
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// language governing permissions and limitations under the Apache License.
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//
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#ifndef OSD_CUDA_GL_VERTEX_BUFFER_H
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#define OSD_CUDA_GL_VERTEX_BUFFER_H
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#include "../version.h"
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#include "../osd/opengl.h"
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#include <cuda_runtime.h>
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#include <cuda_gl_interop.h>
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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/// \brief Concrete vertex buffer class for cuda subvision and OpenGL drawing.
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///
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/// OsdCudaGLVertexBuffer implements OsdCudaVertexBufferInterface and
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/// OsdGLVertexBufferInterface.
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///
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/// The buffer interop between Cuda and GL is handled automatically when a
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/// client calls BindCudaBuffer and BindVBO methods.
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///
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class OsdCudaGLVertexBuffer {
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public:
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/// Creator. Returns NULL if error.
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static OsdCudaGLVertexBuffer * Create(int numElements, int numVertices);
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/// Destructor.
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~OsdCudaGLVertexBuffer();
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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 cuda memory. GL buffer will be mapped to cuda resource
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/// if necessary.
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float * BindCudaBuffer();
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/// Returns the GL buffer object. If the buffer is mapped as a cuda
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/// resource, it will be unmapped back to GL.
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GLuint BindVBO();
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protected:
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/// Constructor.
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OsdCudaGLVertexBuffer(int numElements, int numVertices);
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/// Allocates VBO for this buffer and register as a cuda resource.
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/// Returns true if success.
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bool allocate();
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/// Acquire a cuda resource from GL.
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void map();
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/// Release a cuda resource to GL.
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void unmap();
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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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void *_devicePtr;
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struct cudaGraphicsResource *_cudaResource;
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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_CUDA_GL_VERTEX_BUFFER_H
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