Brecht Van Lommel
9cfc7967dd
* Replace license text in headers with SPDX identifiers. * Remove specific license info from outdated readme.txt, instead leave details to the source files. * Add list of SPDX license identifiers used, and corresponding license texts. * Update copyright dates while we're at it. Ref D14069, T95597
93 lines
2.4 KiB
C++
93 lines
2.4 KiB
C++
/* SPDX-License-Identifier: Apache-2.0
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* Copyright 2011-2022 Blender Foundation */
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#ifdef WITH_CUDA
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# include "device/cuda/graphics_interop.h"
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# include "device/cuda/device_impl.h"
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# include "device/cuda/util.h"
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CCL_NAMESPACE_BEGIN
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CUDADeviceGraphicsInterop::CUDADeviceGraphicsInterop(CUDADeviceQueue *queue)
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: queue_(queue), device_(static_cast<CUDADevice *>(queue->device))
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{
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}
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CUDADeviceGraphicsInterop::~CUDADeviceGraphicsInterop()
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{
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CUDAContextScope scope(device_);
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if (cu_graphics_resource_) {
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cuda_device_assert(device_, cuGraphicsUnregisterResource(cu_graphics_resource_));
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}
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}
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void CUDADeviceGraphicsInterop::set_display_interop(
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const DisplayDriver::GraphicsInterop &display_interop)
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{
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const int64_t new_buffer_area = int64_t(display_interop.buffer_width) *
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display_interop.buffer_height;
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need_clear_ = display_interop.need_clear;
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if (!display_interop.need_recreate) {
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if (opengl_pbo_id_ == display_interop.opengl_pbo_id && buffer_area_ == new_buffer_area) {
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return;
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}
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}
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CUDAContextScope scope(device_);
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if (cu_graphics_resource_) {
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cuda_device_assert(device_, cuGraphicsUnregisterResource(cu_graphics_resource_));
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}
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const CUresult result = cuGraphicsGLRegisterBuffer(
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&cu_graphics_resource_, display_interop.opengl_pbo_id, CU_GRAPHICS_MAP_RESOURCE_FLAGS_NONE);
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if (result != CUDA_SUCCESS) {
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LOG(ERROR) << "Error registering OpenGL buffer: " << cuewErrorString(result);
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}
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opengl_pbo_id_ = display_interop.opengl_pbo_id;
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buffer_area_ = new_buffer_area;
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}
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device_ptr CUDADeviceGraphicsInterop::map()
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{
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if (!cu_graphics_resource_) {
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return 0;
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}
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CUDAContextScope scope(device_);
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CUdeviceptr cu_buffer;
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size_t bytes;
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cuda_device_assert(device_, cuGraphicsMapResources(1, &cu_graphics_resource_, queue_->stream()));
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cuda_device_assert(
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device_, cuGraphicsResourceGetMappedPointer(&cu_buffer, &bytes, cu_graphics_resource_));
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if (need_clear_) {
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cuda_device_assert(
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device_, cuMemsetD8Async(static_cast<CUdeviceptr>(cu_buffer), 0, bytes, queue_->stream()));
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need_clear_ = false;
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}
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return static_cast<device_ptr>(cu_buffer);
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}
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void CUDADeviceGraphicsInterop::unmap()
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{
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CUDAContextScope scope(device_);
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cuda_device_assert(device_,
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cuGraphicsUnmapResources(1, &cu_graphics_resource_, queue_->stream()));
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}
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CCL_NAMESPACE_END
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#endif
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