Add Chromium-only Blender WebEngine parity work

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

@@ -0,0 +1,80 @@
+//
+//   Copyright 2013 Pixar
+//
+//   Licensed under the terms set forth in the LICENSE.txt file available at
+//   https://opensubdiv.org/license.
+//
+
+#include "../osd/cudaVertexBuffer.h"
+
+#include <cuda_runtime.h>
+#include <cassert>
+
+namespace OpenSubdiv {
+namespace OPENSUBDIV_VERSION {
+
+namespace Osd {
+
+CudaVertexBuffer::CudaVertexBuffer(int numElements, int numVertices)
+    : _numElements(numElements),
+      _numVertices(numVertices),
+      _cudaMem(0) {
+}
+
+CudaVertexBuffer::~CudaVertexBuffer() {
+    if (_cudaMem) cudaFree(_cudaMem);
+}
+
+CudaVertexBuffer *
+CudaVertexBuffer::Create(int numElements, int numVertices,
+                         void * /*deviceContext */) {
+    CudaVertexBuffer *instance =
+        new CudaVertexBuffer(numElements, numVertices);
+    if (instance->allocate()) return instance;
+    delete instance;
+    return NULL;
+}
+
+void
+CudaVertexBuffer::UpdateData(const float *src, int startVertex, int numVertices,
+                             void * /*deviceContext*/) {
+
+    size_t size = _numElements * numVertices * sizeof(float);
+
+    cudaMemcpy((float*)_cudaMem + _numElements * startVertex,
+               src, size, cudaMemcpyHostToDevice);
+}
+
+int
+CudaVertexBuffer::GetNumElements() const {
+
+    return _numElements;
+}
+
+int
+CudaVertexBuffer::GetNumVertices() const {
+
+    return _numVertices;
+}
+
+float *
+CudaVertexBuffer::BindCudaBuffer() {
+
+    return static_cast<float*>(_cudaMem);
+}
+
+bool
+CudaVertexBuffer::allocate() {
+    int size = _numElements * _numVertices * sizeof(float);
+
+    cudaError_t err = cudaMalloc(&_cudaMem, size);
+
+    if (err != cudaSuccess) return false;
+    return true;
+}
+
+}  // end namespace Osd
+
+}  // end namespace OPENSUBDIV_VERSION
+}  // end namespace OpenSubdiv
+