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