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/* SPDX-License-Identifier: Apache-2.0
* Copyright 2011-2022 Blender Foundation */
#include "integrator/denoiser_device.h"
#include "device/denoise.h"
#include "device/device.h"
#include "device/memory.h"
#include "device/queue.h"
#include "session/buffers.h"
#include "util/log.h"
#include "util/progress.h"
CCL_NAMESPACE_BEGIN
DeviceDenoiser::DeviceDenoiser(Device *path_trace_device, const DenoiseParams ¶ms)
: Denoiser(path_trace_device, params)
{
}
DeviceDenoiser::~DeviceDenoiser()
{
/* Explicit implementation, to allow forward declaration of Device in the header. */
}
bool DeviceDenoiser::denoise_buffer(const BufferParams &buffer_params,
RenderBuffers *render_buffers,
const int num_samples,
bool allow_inplace_modification)
{
Device *denoiser_device = get_denoiser_device();
if (!denoiser_device) {
return false;
}
DeviceDenoiseTask task;
task.params = params_;
task.num_samples = num_samples;
task.buffer_params = buffer_params;
task.allow_inplace_modification = allow_inplace_modification;
RenderBuffers local_render_buffers(denoiser_device);
bool local_buffer_used = false;
if (denoiser_device == render_buffers->buffer.device) {
/* The device can access an existing buffer pointer. */
local_buffer_used = false;
task.render_buffers = render_buffers;
}
else {
VLOG(3) << "Creating temporary buffer on denoiser device.";
DeviceQueue *queue = denoiser_device->get_denoise_queue();
/* Create buffer which is available by the device used by denoiser. */
/* TODO(sergey): Optimize data transfers. For example, only copy denoising related passes,
* ignoring other light ad data passes. */
local_buffer_used = true;
render_buffers->copy_from_device();
local_render_buffers.reset(buffer_params);
/* NOTE: The local buffer is allocated for an exact size of the effective render size, while
* the input render buffer is allocated for the lowest resolution divider possible. So it is
* important to only copy actually needed part of the input buffer. */
memcpy(local_render_buffers.buffer.data(),
render_buffers->buffer.data(),
sizeof(float) * local_render_buffers.buffer.size());
queue->copy_to_device(local_render_buffers.buffer);
task.render_buffers = &local_render_buffers;
task.allow_inplace_modification = true;
}
const bool denoise_result = denoiser_device->denoise_buffer(task);
if (local_buffer_used) {
local_render_buffers.copy_from_device();
render_buffers_host_copy_denoised(
render_buffers, buffer_params, &local_render_buffers, local_render_buffers.params);
render_buffers->copy_to_device();
}
return denoise_result;
}
CCL_NAMESPACE_END
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