Add Chromium-only Blender WebEngine parity work

blender-5.2.0/extern/opensubdiv-source/opensubdiv/osd/clVertexBuffer.cpp

@@ -0,0 +1,85 @@
+//
+//
+//   Copyright 2013 Pixar
+//
+//   Licensed under the terms set forth in the LICENSE.txt file available at
+//   https://opensubdiv.org/license.
+//
+
+#include "../osd/clVertexBuffer.h"
+
+#include <cassert>
+
+namespace OpenSubdiv {
+namespace OPENSUBDIV_VERSION {
+
+namespace Osd {
+
+CLVertexBuffer::CLVertexBuffer(int numElements, int numVertices,
+                                     cl_context /* clContext */)
+    : _numElements(numElements), _numVertices(numVertices), _clMemory(NULL) {
+
+}
+
+CLVertexBuffer::~CLVertexBuffer() {
+
+    clReleaseMemObject(_clMemory);
+}
+
+CLVertexBuffer *
+CLVertexBuffer::Create(int numElements, int numVertices,
+                          cl_context clContext) {
+    CLVertexBuffer *instance =
+        new CLVertexBuffer(numElements, numVertices, clContext);
+    if (instance->allocate(clContext)) return instance;
+    delete instance;
+    return NULL;
+}
+
+void
+CLVertexBuffer::UpdateData(const float *src, int startVertex, int numVertices, cl_command_queue queue,
+    cl_event* startEvents, unsigned int numStartEvents, cl_event* endEvent) {
+
+    size_t size = _numElements * numVertices * sizeof(float);
+    size_t offset = startVertex * _numElements * sizeof(float);
+
+    cl_bool blocking = (endEvent == NULL) ? CL_TRUE : CL_FALSE;
+    cl_int err = clEnqueueWriteBuffer(queue, _clMemory, blocking, offset, size, src, numStartEvents, startEvents, endEvent);
+    assert(err == CL_SUCCESS);
+}
+
+int
+CLVertexBuffer::GetNumElements() const {
+
+    return _numElements;
+}
+
+int
+CLVertexBuffer::GetNumVertices() const {
+
+    return _numVertices;
+}
+
+cl_mem
+CLVertexBuffer::BindCLBuffer(cl_command_queue /* queue */) {
+
+    return _clMemory;
+}
+
+bool
+CLVertexBuffer::allocate(cl_context clContext) {
+    assert(clContext);
+    int size = _numVertices * _numElements * sizeof(float);
+    cl_int err;
+
+    _clMemory = clCreateBuffer(clContext, CL_MEM_READ_WRITE, size, NULL, &err);
+
+    if (err != CL_SUCCESS) return false;
+    return true;
+}
+
+}  // end namespace Osd
+
+}  // end namespace OPENSUBDIV_VERSION
+}  // end namespace OpenSubdiv
+