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, 7 insertions, 5 deletions

diff --git a/intern/cycles/kernel/geom/geom_motion_triangle.h b/intern/cycles/kernel/geom/geom_motion_triangle.h
index 53d6b92dd7e..eb4a39e062b 100644
--- a/intern/cycles/kernel/geom/geom_motion_triangle.h
+++ b/intern/cycles/kernel/geom/geom_motion_triangle.h
@@ -25,11 +25,13 @@
  * and ATTR_STD_MOTION_VERTEX_NORMAL mesh attributes.
  */
 
+#pragma once
+
 CCL_NAMESPACE_BEGIN
 
 /* Time interpolation of vertex positions and normals */
 
-ccl_device_inline int find_attribute_motion(KernelGlobals *kg,
+ccl_device_inline int find_attribute_motion(const KernelGlobals *kg,
                                             int object,
                                             uint id,
                                             AttributeElement *elem)
@@ -49,7 +51,7 @@ ccl_device_inline int find_attribute_motion(KernelGlobals *kg,
   return (attr_map.y == ATTR_ELEMENT_NONE) ? (int)ATTR_STD_NOT_FOUND : (int)attr_map.z;
 }
 
-ccl_device_inline void motion_triangle_verts_for_step(KernelGlobals *kg,
+ccl_device_inline void motion_triangle_verts_for_step(const KernelGlobals *kg,
                                                       uint4 tri_vindex,
                                                       int offset,
                                                       int numverts,
@@ -76,7 +78,7 @@ ccl_device_inline void motion_triangle_verts_for_step(KernelGlobals *kg,
   }
 }
 
-ccl_device_inline void motion_triangle_normals_for_step(KernelGlobals *kg,
+ccl_device_inline void motion_triangle_normals_for_step(const KernelGlobals *kg,
                                                         uint4 tri_vindex,
                                                         int offset,
                                                         int numverts,
@@ -104,7 +106,7 @@ ccl_device_inline void motion_triangle_normals_for_step(KernelGlobals *kg,
 }
 
 ccl_device_inline void motion_triangle_vertices(
-    KernelGlobals *kg, int object, int prim, float time, float3 verts[3])
+    const KernelGlobals *kg, int object, int prim, float time, float3 verts[3])
 {
   /* get motion info */
   int numsteps, numverts;
@@ -134,7 +136,7 @@ ccl_device_inline void motion_triangle_vertices(
 }
 
 ccl_device_inline float3 motion_triangle_smooth_normal(
-    KernelGlobals *kg, float3 Ng, int object, int prim, float u, float v, float time)
+    const KernelGlobals *kg, float3 Ng, int object, int prim, float u, float v, float time)
 {
   /* get motion info */
   int numsteps, numverts;