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/blenderplayer/bad_level_call_stubs/stubs.c b/source/blenderplayer/bad_level_call_stubs/stubs.c
index e74f6f3208c..a9cf76adae3 100644
--- a/source/blenderplayer/bad_level_call_stubs/stubs.c
+++ b/source/blenderplayer/bad_level_call_stubs/stubs.c
@@ -186,6 +186,7 @@ struct wmWindowManager;
 #include "../blender/render/extern/include/RE_pipeline.h"
 #include "../blender/render/extern/include/RE_render_ext.h"
 #include "../blender/render/extern/include/RE_shader_ext.h"
+#include "../blender/draw/DRW_engine.h"
 #include "../blender/windowmanager/WM_api.h"
 
 
@@ -663,6 +664,7 @@ void RE_ReleaseResultImage(struct Render *re) RET_NONE
 int RE_engine_test_break(struct RenderEngine *engine) RET_ZERO
 void RE_engines_init() RET_NONE
 void RE_engines_exit() RET_NONE
+void RE_engines_register(struct Main *bmain, RenderEngineType *render_type) RET_NONE
 void RE_engine_report(struct RenderEngine *engine, int type, const char *msg) RET_NONE
 ListBase R_engines = {NULL, NULL};
 void RE_engine_free(struct RenderEngine *engine) RET_NONE
@@ -679,6 +681,9 @@ void RE_instance_get_particle_info(struct ObjectInstanceRen *obi, float *index,
 void RE_FreeAllPersistentData(void) RET_NONE
 float RE_fresnel_dielectric(float incoming[3], float normal[3], float eta) RET_ZERO
 
+/* Draw */
+void *DRW_render_settings_get(struct Scene *scene, const char *engine_name) RET_NULL
+
 /* python */
 struct wmOperatorType *WM_operatortype_find(const char *idname, bool quiet) RET_NULL
 void WM_operatortype_iter(struct GHashIterator *ghi) RET_NONE