86 lines
2.0 KiB
C++
86 lines
2.0 KiB
C++
//
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//
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// Copyright 2013 Pixar
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//
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// Licensed under the terms set forth in the LICENSE.txt file available at
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// https://opensubdiv.org/license.
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//
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#include "../osd/clVertexBuffer.h"
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#include <cassert>
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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namespace Osd {
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CLVertexBuffer::CLVertexBuffer(int numElements, int numVertices,
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cl_context /* clContext */)
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: _numElements(numElements), _numVertices(numVertices), _clMemory(NULL) {
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}
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CLVertexBuffer::~CLVertexBuffer() {
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clReleaseMemObject(_clMemory);
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}
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CLVertexBuffer *
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CLVertexBuffer::Create(int numElements, int numVertices,
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cl_context clContext) {
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CLVertexBuffer *instance =
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new CLVertexBuffer(numElements, numVertices, clContext);
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if (instance->allocate(clContext)) return instance;
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delete instance;
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return NULL;
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}
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void
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CLVertexBuffer::UpdateData(const float *src, int startVertex, int numVertices, cl_command_queue queue,
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cl_event* startEvents, unsigned int numStartEvents, cl_event* endEvent) {
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size_t size = _numElements * numVertices * sizeof(float);
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size_t offset = startVertex * _numElements * sizeof(float);
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cl_bool blocking = (endEvent == NULL) ? CL_TRUE : CL_FALSE;
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cl_int err = clEnqueueWriteBuffer(queue, _clMemory, blocking, offset, size, src, numStartEvents, startEvents, endEvent);
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assert(err == CL_SUCCESS);
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}
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int
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CLVertexBuffer::GetNumElements() const {
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return _numElements;
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}
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int
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CLVertexBuffer::GetNumVertices() const {
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return _numVertices;
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}
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cl_mem
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CLVertexBuffer::BindCLBuffer(cl_command_queue /* queue */) {
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return _clMemory;
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}
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bool
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CLVertexBuffer::allocate(cl_context clContext) {
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assert(clContext);
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int size = _numVertices * _numElements * sizeof(float);
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cl_int err;
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_clMemory = clCreateBuffer(clContext, CL_MEM_READ_WRITE, size, NULL, &err);
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if (err != CL_SUCCESS) return false;
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return true;
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}
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} // end namespace Osd
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} // end namespace OPENSUBDIV_VERSION
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} // end namespace OpenSubdiv
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