mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-12-05 01:10:05 +00:00
20dcd24b9d
- prepend the opensubdiv directory to all library headers included - removed the opensubdiv directory from all declared include paths
127 lines
4.4 KiB
C++
127 lines
4.4 KiB
C++
//
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// Copyright 2015 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 OPENSUBDIV_EXAMPLES_GL_SHARE_TOPOLOGY_VBO_H
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#define OPENSUBDIV_EXAMPLES_GL_SHARE_TOPOLOGY_VBO_H
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#include <vector>
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#include <opensubdiv/osd/bufferDescriptor.h>
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#include <opensubdiv/osd/opengl.h>
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template <class VERTEX_BUFFER, class DEVICE_CONTEXT>
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class VBO {
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public:
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VBO(OpenSubdiv::Osd::BufferDescriptor const &vertexDesc,
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OpenSubdiv::Osd::BufferDescriptor const &varyingDesc,
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bool interleaved, int numVertices, DEVICE_CONTEXT *deviceContext) :
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_vertexDesc(vertexDesc),
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_varyingDesc(varyingDesc),
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_numVertices(numVertices),
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_vertexBuffer(NULL), _varyingBuffer(NULL), _interleaved(interleaved),
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_deviceContext(deviceContext) {
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if (interleaved) {
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assert(vertexDesc.stride == varyingDesc.stride);
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_vertexBuffer = createVertexBuffer(
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vertexDesc.stride, numVertices);
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} else {
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if (vertexDesc.stride > 0) {
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_vertexBuffer = createVertexBuffer(
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vertexDesc.stride, numVertices);
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}
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if (varyingDesc.stride > 0) {
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_varyingBuffer = createVertexBuffer(
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varyingDesc.stride, numVertices);
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}
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}
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}
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~VBO() {
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delete _vertexBuffer;
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delete _varyingBuffer;
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}
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OpenSubdiv::Osd::BufferDescriptor const &GetVertexDesc() const {
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return _vertexDesc;
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}
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OpenSubdiv::Osd::BufferDescriptor const &GetVaryingDesc() const {
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return _varyingDesc;
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}
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void UpdateVertexBuffer(int vertsOffset, std::vector<float> const &src) {
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updateVertexBuffer(_vertexBuffer, &src[0], vertsOffset,
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(int)src.size()/_vertexBuffer->GetNumElements());
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}
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void UpdateVaryingBuffer(int vertsOffset, std::vector<float> const &src) {
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updateVertexBuffer(_varyingBuffer, &src[0], vertsOffset,
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(int)src.size()/_varyingBuffer->GetNumElements());
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}
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GLuint BindVertexBuffer() {
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return _vertexBuffer->BindVBO();
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}
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GLuint BindVaryingBuffer() {
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return _varyingBuffer->BindVBO();
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}
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VERTEX_BUFFER *GetVertexBuffer() const {
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return _vertexBuffer;
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}
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VERTEX_BUFFER *GetVaryingBuffer() const {
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return _interleaved ? _vertexBuffer : _varyingBuffer;
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}
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size_t GetSize() const {
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size_t size = _numVertices * _vertexDesc.stride;
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if (_varyingBuffer) size += _numVertices * _varyingDesc.stride;
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return size * sizeof(float);
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}
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private:
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VERTEX_BUFFER *createVertexBuffer(int numElements, int numVertices) {
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return VERTEX_BUFFER::Create(numElements, numVertices, _deviceContext);
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}
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void updateVertexBuffer(VERTEX_BUFFER *vertexBuffer,
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const float *src, int startVertex,
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int numVertices) {
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vertexBuffer->UpdateData(src, startVertex, numVertices, _deviceContext);
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}
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OpenSubdiv::Osd::BufferDescriptor _vertexDesc;
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OpenSubdiv::Osd::BufferDescriptor _varyingDesc;
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// # of vertices total, including both control verts and refined verts.
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int _numVertices;
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VERTEX_BUFFER *_vertexBuffer;
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VERTEX_BUFFER *_varyingBuffer;
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bool _interleaved;
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DEVICE_CONTEXT *_deviceContext;
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};
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#endif // OPENSUBDIV_EXAMPLES_GL_SHARE_TOPOLOGY_VBO_H
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