Distance Scrambling for for Cycles X - Sobol version

Cycles:Distance Scrambling for Cycles Sobol Sampler

This option implements micro jittering an is based on the INRIA
research paper [[ https://hal.inria.fr/hal-01325702/document | on micro jittering ]]
and work by Lukas Stockner for implementing the scrambling distance.
It works by controlling the correlation between pixels by either using
a user supplied value or an adaptive algorithm to limit the maximum
deviation of the sample values between pixels.

This is a follow up of https://developer.blender.org/D12316

The PMJ version can be found here: https://developer.blender.org/D12511

Reviewed By: leesonw

Differential Revision: https://developer.blender.org/D12318

1 files changed, 7 insertions, 2 deletions

diff --git a/intern/cycles/integrator/work_tile_scheduler.cpp b/intern/cycles/integrator/work_tile_scheduler.cpp
index c874dffde91..2d1ac07db7f 100644
--- a/intern/cycles/integrator/work_tile_scheduler.cpp
+++ b/intern/cycles/integrator/work_tile_scheduler.cpp
@@ -33,13 +33,17 @@ void WorkTileScheduler::set_max_num_path_states(int max_num_path_states)
   max_num_path_states_ = max_num_path_states;
 }
 
-void WorkTileScheduler::reset(const BufferParams &buffer_params, int sample_start, int samples_num)
+void WorkTileScheduler::reset(const BufferParams &buffer_params,
+                              int sample_start,
+                              int samples_num,
+                              float scrambling_distance)
 {
   /* Image buffer parameters. */
   image_full_offset_px_.x = buffer_params.full_x;
   image_full_offset_px_.y = buffer_params.full_y;
 
   image_size_px_ = make_int2(buffer_params.width, buffer_params.height);
+  scrambling_distance_ = scrambling_distance;
 
   offset_ = buffer_params.offset;
   stride_ = buffer_params.stride;
@@ -54,7 +58,8 @@ void WorkTileScheduler::reset(const BufferParams &buffer_params, int sample_star
 
 void WorkTileScheduler::reset_scheduler_state()
 {
-  tile_size_ = tile_calculate_best_size(image_size_px_, samples_num_, max_num_path_states_);
+  tile_size_ = tile_calculate_best_size(
+      image_size_px_, samples_num_, max_num_path_states_, scrambling_distance_);
 
   VLOG(3) << "Will schedule tiles of size " << tile_size_;