94 lines
2.4 KiB
C++
94 lines
2.4 KiB
C++
/* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0 */
|
|
|
|
#ifdef WITH_CUDA
|
|
|
|
# include "device/cuda/graphics_interop.h"
|
|
|
|
# include "device/cuda/device_impl.h"
|
|
# include "device/cuda/util.h"
|
|
|
|
CCL_NAMESPACE_BEGIN
|
|
|
|
CUDADeviceGraphicsInterop::CUDADeviceGraphicsInterop(CUDADeviceQueue *queue)
|
|
: queue_(queue), device_(static_cast<CUDADevice *>(queue->device))
|
|
{
|
|
}
|
|
|
|
CUDADeviceGraphicsInterop::~CUDADeviceGraphicsInterop()
|
|
{
|
|
CUDAContextScope scope(device_);
|
|
|
|
if (cu_graphics_resource_) {
|
|
cuda_device_assert(device_, cuGraphicsUnregisterResource(cu_graphics_resource_));
|
|
}
|
|
}
|
|
|
|
void CUDADeviceGraphicsInterop::set_display_interop(
|
|
const DisplayDriver::GraphicsInterop &display_interop)
|
|
{
|
|
const int64_t new_buffer_area = int64_t(display_interop.buffer_width) *
|
|
display_interop.buffer_height;
|
|
|
|
need_clear_ = display_interop.need_clear;
|
|
|
|
if (!display_interop.need_recreate) {
|
|
if (opengl_pbo_id_ == display_interop.opengl_pbo_id && buffer_area_ == new_buffer_area) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
CUDAContextScope scope(device_);
|
|
|
|
if (cu_graphics_resource_) {
|
|
cuda_device_assert(device_, cuGraphicsUnregisterResource(cu_graphics_resource_));
|
|
}
|
|
|
|
const CUresult result = cuGraphicsGLRegisterBuffer(
|
|
&cu_graphics_resource_, display_interop.opengl_pbo_id, CU_GRAPHICS_MAP_RESOURCE_FLAGS_NONE);
|
|
if (result != CUDA_SUCCESS) {
|
|
LOG(ERROR) << "Error registering OpenGL buffer: " << cuewErrorString(result);
|
|
}
|
|
|
|
opengl_pbo_id_ = display_interop.opengl_pbo_id;
|
|
buffer_area_ = new_buffer_area;
|
|
}
|
|
|
|
device_ptr CUDADeviceGraphicsInterop::map()
|
|
{
|
|
if (!cu_graphics_resource_) {
|
|
return 0;
|
|
}
|
|
|
|
CUDAContextScope scope(device_);
|
|
|
|
CUdeviceptr cu_buffer;
|
|
size_t bytes;
|
|
|
|
cuda_device_assert(device_, cuGraphicsMapResources(1, &cu_graphics_resource_, queue_->stream()));
|
|
cuda_device_assert(
|
|
device_, cuGraphicsResourceGetMappedPointer(&cu_buffer, &bytes, cu_graphics_resource_));
|
|
|
|
if (need_clear_) {
|
|
cuda_device_assert(
|
|
device_, cuMemsetD8Async(static_cast<CUdeviceptr>(cu_buffer), 0, bytes, queue_->stream()));
|
|
|
|
need_clear_ = false;
|
|
}
|
|
|
|
return static_cast<device_ptr>(cu_buffer);
|
|
}
|
|
|
|
void CUDADeviceGraphicsInterop::unmap()
|
|
{
|
|
CUDAContextScope scope(device_);
|
|
|
|
cuda_device_assert(device_,
|
|
cuGraphicsUnmapResources(1, &cu_graphics_resource_, queue_->stream()));
|
|
}
|
|
|
|
CCL_NAMESPACE_END
|
|
|
|
#endif
|