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/* SPDX-License-Identifier: Apache-2.0
* Copyright 2011-2022 Blender Foundation */
#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_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 (opengl_pbo_id_ == display_interop.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_, display_interop.opengl_pbo_id, hipGraphicsRegisterFlagsNone);
if (result != hipSuccess) {
LOG(ERROR) << "Error registering OpenGL buffer: " << hipewErrorString(result);
}
opengl_pbo_id_ = display_interop.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_));
if (need_clear_) {
hip_device_assert(
device_,
hipMemsetD8Async(static_cast<hipDeviceptr_t>(hip_buffer), 0, bytes, queue_->stream()));
need_clear_ = false;
}
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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