Cycles: merge of cycles-x branch, a major update to the renderer

This includes much improved GPU rendering performance, viewport interactivity,
new shadow catcher, revamped sampling settings, subsurface scattering anisotropy,
new GPU volume sampling, improved PMJ sampling pattern, and more.

Some features have also been removed or changed, breaking backwards compatibility.
Including the removal of the OpenCL backend, for which alternatives are under
development.

Release notes and code docs:
https://wiki.blender.org/wiki/Reference/Release_Notes/3.0/Cycles
https://wiki.blender.org/wiki/Source/Render/Cycles

Credits:
* Sergey Sharybin
* Brecht Van Lommel
* Patrick Mours (OptiX backend)
* Christophe Hery (subsurface scattering anisotropy)
* William Leeson (PMJ sampling pattern)
* Alaska (various fixes and tweaks)
* Thomas Dinges (various fixes)

For the full commit history, see the cycles-x branch. This squashes together
all the changes since intermediate changes would often fail building or tests.

Ref T87839, T87837, T87836
Fixes T90734, T89353, T80267, T80267, T77185, T69800

1 files changed, 22 insertions, 13 deletions

diff --git a/intern/cycles/render/denoising.h b/intern/cycles/render/denoising.h
index c1b4d0a5596..097cc570d06 100644
--- a/intern/cycles/render/denoising.h
+++ b/intern/cycles/render/denoising.h
@@ -17,27 +17,31 @@
 #ifndef __DENOISING_H__
 #define __DENOISING_H__
 
-#include "device/device.h"
-#include "device/device_denoising.h"
+#if 0
 
-#include "render/buffers.h"
+/* TODO(sergey): Make it explicit and clear when something is a denoiser, its pipeline or
+ * parameters. Currently it is an annoying mixture of terms used interchangeably. */
 
-#include "util/util_string.h"
-#include "util/util_unique_ptr.h"
-#include "util/util_vector.h"
+#  include "device/device.h"
 
-#include <OpenImageIO/imageio.h>
+#  include "render/buffers.h"
+
+#  include "util/util_string.h"
+#  include "util/util_unique_ptr.h"
+#  include "util/util_vector.h"
+
+#  include <OpenImageIO/imageio.h>
 
 OIIO_NAMESPACE_USING
 
 CCL_NAMESPACE_BEGIN
 
-/* Denoiser */
+/* Denoiser pipeline */
 
-class Denoiser {
+class DenoiserPipeline {
  public:
-  Denoiser(DeviceInfo &device_info);
-  ~Denoiser();
+  DenoiserPipeline(DeviceInfo &device_info);
+  ~DenoiserPipeline();
 
   bool run();
 
@@ -155,7 +159,10 @@ class DenoiseImage {
 
 class DenoiseTask {
  public:
-  DenoiseTask(Device *device, Denoiser *denoiser, int frame, const vector<int> &neighbor_frames);
+  DenoiseTask(Device *device,
+              DenoiserPipeline *denoiser,
+              int frame,
+              const vector<int> &neighbor_frames);
   ~DenoiseTask();
 
   /* Task stages */
@@ -168,7 +175,7 @@ class DenoiseTask {
 
  protected:
   /* Denoiser parameters and device */
-  Denoiser *denoiser;
+  DenoiserPipeline *denoiser;
   Device *device;
 
   /* Frame number to be denoised */
@@ -204,4 +211,6 @@ class DenoiseTask {
 
 CCL_NAMESPACE_END
 
+#endif
+
 #endif /* __DENOISING_H__ */