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/*
* Copyright 2011-2021 Blender Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifdef WITH_HIP
# include "device/hip/graphics_interop.h"
# include "device/hip/device_impl.h"
# include "device/hip/util.h"
CCL_NAMESPACE_BEGIN
HIPDeviceGraphicsInterop::HIPDeviceGraphicsInterop(HIPDeviceQueue *queue)
: queue_(queue), device_(static_cast<HIPDevice *>(queue->device))
{
}
HIPDeviceGraphicsInterop::~HIPDeviceGraphicsInterop()
{
HIPContextScope scope(device_);
if (hip_graphics_resource_) {
hip_device_assert(device_, hipGraphicsUnregisterResource(hip_graphics_resource_));
}
}
void HIPDeviceGraphicsInterop::set_destination(const DeviceGraphicsInteropDestination &destination)
{
const int64_t new_buffer_area = int64_t(destination.buffer_width) * destination.buffer_height;
if (opengl_pbo_id_ == destination.opengl_pbo_id && buffer_area_ == new_buffer_area) {
return;
}
HIPContextScope scope(device_);
if (hip_graphics_resource_) {
hip_device_assert(device_, hipGraphicsUnregisterResource(hip_graphics_resource_));
}
const hipError_t result = hipGraphicsGLRegisterBuffer(
&hip_graphics_resource_, destination.opengl_pbo_id, hipGraphicsRegisterFlagsNone);
if (result != hipSuccess) {
LOG(ERROR) << "Error registering OpenGL buffer: " << hipewErrorString(result);
}
opengl_pbo_id_ = destination.opengl_pbo_id;
buffer_area_ = new_buffer_area;
}
device_ptr HIPDeviceGraphicsInterop::map()
{
if (!hip_graphics_resource_) {
return 0;
}
HIPContextScope scope(device_);
hipDeviceptr_t hip_buffer;
size_t bytes;
hip_device_assert(device_,
hipGraphicsMapResources(1, &hip_graphics_resource_, queue_->stream()));
hip_device_assert(
device_, hipGraphicsResourceGetMappedPointer(&hip_buffer, &bytes, hip_graphics_resource_));
return static_cast<device_ptr>(hip_buffer);
}
void HIPDeviceGraphicsInterop::unmap()
{
HIPContextScope scope(device_);
hip_device_assert(device_,
hipGraphicsUnmapResources(1, &hip_graphics_resource_, queue_->stream()));
}
CCL_NAMESPACE_END
#endif
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