Cycles: Add support for denoising in the viewport

The OptiX denoiser can be a great help when rendering in the viewport, since it is really fast
and needs few samples to produce convincing results. This patch therefore adds support for
using any Cycles denoiser in the viewport also (but only the OptiX one is selectable because
the NLM one is too slow to be usable currently). It also adds support for denoising on a
different device than rendering (so one can e.g. render with the CPU but denoise with OptiX).

Reviewed By: #cycles, brecht

Differential Revision: https://developer.blender.org/D6554

1 files changed, 6 insertions, 4 deletions

diff --git a/intern/cycles/render/tile.h b/intern/cycles/render/tile.h
index 017c1af0ead..14c693683c4 100644
--- a/intern/cycles/render/tile.h
+++ b/intern/cycles/render/tile.h
@@ -89,6 +89,7 @@ class TileManager {
   } state;
 
   int num_samples;
+  int slice_overlap;
 
   TileManager(bool progressive,
               int num_samples,
@@ -105,15 +106,19 @@ class TileManager {
   void reset(BufferParams &params, int num_samples);
   void set_samples(int num_samples);
   bool next();
-  bool next_tile(Tile *&tile, int device = 0);
+  bool next_tile(Tile *&tile, int device, bool denoising);
   bool finish_tile(int index, bool &delete_tile);
   bool done();
+  bool has_tiles();
 
   void set_tile_order(TileOrder tile_order_)
   {
     tile_order = tile_order_;
   }
 
+  int get_neighbor_index(int index, int neighbor);
+  bool check_neighbor_state(int index, Tile::State state);
+
   /* ** Sample range rendering. ** */
 
   /* Start sample in the range. */
@@ -160,9 +165,6 @@ class TileManager {
   /* Generate tile list, return number of tiles. */
   int gen_tiles(bool sliced);
   void gen_render_tiles();
-
-  int get_neighbor_index(int index, int neighbor);
-  bool check_neighbor_state(int index, Tile::State state);
 };
 
 CCL_NAMESPACE_END