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, 1 insertions, 14 deletions

diff --git a/intern/cycles/render/graph.h b/intern/cycles/render/graph.h
index 5102b182593..3584754fad1 100644
--- a/intern/cycles/render/graph.h
+++ b/intern/cycles/render/graph.h
@@ -224,10 +224,6 @@ class ShaderNode : public Node {
   {
     return false;
   }
-  virtual bool has_raytrace()
-  {
-    return false;
-  }
   vector<ShaderInput *> inputs;
   vector<ShaderOutput *> outputs;
 
@@ -242,22 +238,13 @@ class ShaderNode : public Node {
    * that those functions are for selective compilation only?
    */
 
-  /* Nodes are split into several groups, group of level 0 contains
-   * nodes which are most commonly used, further levels are extension
-   * of previous one and includes less commonly used nodes.
-   */
-  virtual int get_group()
-  {
-    return NODE_GROUP_LEVEL_0;
-  }
-
   /* Node feature are used to disable huge nodes inside the group,
    * so it's possible to disable huge nodes inside of the required
    * nodes group.
    */
   virtual int get_feature()
   {
-    return bump == SHADER_BUMP_NONE ? 0 : NODE_FEATURE_BUMP;
+    return bump == SHADER_BUMP_NONE ? 0 : KERNEL_FEATURE_NODE_BUMP;
   }
 
   /* Get closure ID to which the node compiles into. */