Clay-Engine (merge clay-engine)

Initial work by Clément Foucault with contributions from Dalai Felinto
(mainly per-collection engine settings logic, and depsgraph iterator placeholder).

This makes Blender require OpenGL 3.3. Which means Intel graphic card
and OSX will break. Disable CLAY_ENGINE in CMake in those cases.

This is a prototype render engine intended to help the design of real
render engines. This is mainly an engine with enphasis in matcap and
ambient occlusion.

Implemented Features
--------------------

* Clay Render Engine, following the new API, to be used as reference for
future engines

* A more complete Matcap customization with more options

* Per-Collection render engine settings

* New Ground Truth AO - not enabled

Missing Features
----------------

* Finish object edit mode
  - Fix shaders to use new matrix
  - Fix artifacts when edge does off screen
  - Fix depth issue
  - Selection sillhouette
  - Mesh wires
  - Use mesh normals (for higher quality matcap)
  - Non-Mesh objects drawing
  - Widget drawing
  - Performance issues

* Finish mesh edit mode
  - Derived-Mesh-less edit mode API (mesh_rende.c)

* General edit mode
  - Per-collection edit mode settings

* General engines
  - Per-collection engine settings
    (they are their, but they still need to be flushed by depsgraph, and
    used by the drawing code)

1 files changed, 5 insertions, 0 deletions

diff --git a/source/blender/makesrna/RNA_access.h b/source/blender/makesrna/RNA_access.h
index 9c45e34f211..2221526fa8b 100644
--- a/source/blender/makesrna/RNA_access.h
+++ b/source/blender/makesrna/RNA_access.h
@@ -106,6 +106,7 @@ extern StructRNA RNA_ClothCollisionSettings;
 extern StructRNA RNA_ClothModifier;
 extern StructRNA RNA_ClothSettings;
 extern StructRNA RNA_CloudsTexture;
+extern StructRNA RNA_CollectionEngineSettings;
 extern StructRNA RNA_CollectionProperty;
 extern StructRNA RNA_CollisionModifier;
 extern StructRNA RNA_CollisionSensor;
@@ -385,6 +386,8 @@ extern StructRNA RNA_MaterialStrand;
 extern StructRNA RNA_MaterialSubsurfaceScattering;
 extern StructRNA RNA_MaterialTextureSlot;
 extern StructRNA RNA_MaterialVolume;
+extern StructRNA RNA_MaterialEngineSettings;
+extern StructRNA RNA_MaterialEngineSettingsClay;
 extern StructRNA RNA_Mask;
 extern StructRNA RNA_MaskLayer;
 extern StructRNA RNA_Menu;
@@ -500,6 +503,8 @@ extern StructRNA RNA_RenderLayer;
 extern StructRNA RNA_RenderPass;
 extern StructRNA RNA_RenderResult;
 extern StructRNA RNA_RenderSettings;
+extern StructRNA RNA_RenderEngineSettings;
+extern StructRNA RNA_RenderEngineSettingsClay;
 extern StructRNA RNA_RigidBodyWorld;
 extern StructRNA RNA_RigidBodyObject;
 extern StructRNA RNA_RigidBodyJointConstraint;