101 lines
3.5 KiB
C++
101 lines
3.5 KiB
C++
/* SPDX-FileCopyrightText: 2021-2022 Blender Foundation
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*
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* SPDX-License-Identifier: Apache-2.0 */
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#include "integrator/path_trace_tile.h"
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#include "integrator/pass_accessor_cpu.h"
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#include "integrator/path_trace.h"
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#include "scene/film.h"
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#include "scene/pass.h"
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#include "scene/scene.h"
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#include "session/buffers.h"
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CCL_NAMESPACE_BEGIN
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PathTraceTile::PathTraceTile(PathTrace &path_trace)
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: OutputDriver::Tile(path_trace.get_render_tile_offset(),
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path_trace.get_render_tile_size(),
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path_trace.get_render_size(),
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path_trace.get_render_tile_params().layer,
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path_trace.get_render_tile_params().view),
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path_trace_(path_trace),
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copied_from_device_(false)
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{
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}
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bool PathTraceTile::get_pass_pixels(const string_view pass_name,
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const int num_channels,
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float *pixels) const
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{
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/* NOTE: The code relies on a fact that session is fully update and no scene/buffer modification
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* is happening while this function runs. */
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if (!copied_from_device_) {
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/* Copy from device on demand. */
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path_trace_.copy_render_tile_from_device();
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copied_from_device_ = true;
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}
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const BufferParams &buffer_params = path_trace_.get_render_tile_params();
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const BufferPass *pass = buffer_params.find_pass(pass_name);
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if (pass == nullptr) {
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return false;
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}
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const bool has_denoised_result = path_trace_.has_denoised_result();
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if (pass->mode == PassMode::DENOISED && !has_denoised_result) {
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pass = buffer_params.find_pass(pass->type);
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if (pass == nullptr) {
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/* Happens when denoised result pass is requested but is never written by the kernel. */
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return false;
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}
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}
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pass = buffer_params.get_actual_display_pass(pass);
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if (pass == nullptr) {
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/* Happens when interactive session changes display pass but render
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* buffer does not contain it yet. */
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return false;
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}
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const float exposure = buffer_params.exposure;
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const int num_samples = path_trace_.get_num_render_tile_samples();
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PassAccessor::PassAccessInfo pass_access_info(*pass);
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pass_access_info.use_approximate_shadow_catcher = buffer_params.use_approximate_shadow_catcher;
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pass_access_info.use_approximate_shadow_catcher_background =
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pass_access_info.use_approximate_shadow_catcher && !buffer_params.use_transparent_background;
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const PassAccessorCPU pass_accessor(pass_access_info, exposure, num_samples);
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const PassAccessor::Destination destination(pixels, num_channels);
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return path_trace_.get_render_tile_pixels(pass_accessor, destination);
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}
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bool PathTraceTile::set_pass_pixels(const string_view pass_name,
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const int num_channels,
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const float *pixels) const
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{
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/* NOTE: The code relies on a fact that session is fully update and no scene/buffer modification
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* is happening while this function runs. */
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const BufferParams &buffer_params = path_trace_.get_render_tile_params();
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const BufferPass *pass = buffer_params.find_pass(pass_name);
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if (!pass) {
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return false;
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}
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const float exposure = buffer_params.exposure;
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const int num_samples = 1;
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const PassAccessor::PassAccessInfo pass_access_info(*pass);
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PassAccessorCPU pass_accessor(pass_access_info, exposure, num_samples);
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PassAccessor::Source source(pixels, num_channels);
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return path_trace_.set_render_tile_pixels(pass_accessor, source);
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}
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CCL_NAMESPACE_END
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