PointCloud: Initial rendering support for Workbench

Also includes outline overlays. Removes the temp overlay drawing

We make the geometry follow camera like billboards this uses less
geometry. Currently we use half octahedron for now. Goal would be
to use icospheres.

This patch also optimize the case when pointcloud has uniform radius.
However we should premultiply the radius prop by the default radius
beforehand to avoid a multiplication on CPU.

Using geometry instead of pseudo raytraced spheres is more scalable as
we can render as low as 1 or 2 triangle to a full half sphere and can
integrate easily in the render pipeline using a low amount of code.

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D8301

1 files changed, 10 insertions, 3 deletions

diff --git a/source/blender/draw/intern/draw_cache.c b/source/blender/draw/intern/draw_cache.c
index 9f30cd85957..20e346375a7 100644
--- a/source/blender/draw/intern/draw_cache.c
+++ b/source/blender/draw/intern/draw_cache.c
@@ -829,7 +829,7 @@ GPUBatch *DRW_cache_object_face_wireframe_get(Object *ob)
     case OB_HAIR:
       return NULL;
     case OB_POINTCLOUD:
-      return NULL;
+      return DRW_pointcloud_batch_cache_get_dots(ob);
     case OB_VOLUME:
       return DRW_cache_volume_face_wireframe_get(ob);
     case OB_GPENCIL: {
@@ -880,7 +880,7 @@ GPUBatch *DRW_cache_object_surface_get(Object *ob)
     case OB_HAIR:
       return NULL;
     case OB_POINTCLOUD:
-      return NULL;
+      return DRW_cache_pointcloud_surface_get(ob);
     case OB_VOLUME:
       return NULL;
     default:
@@ -958,7 +958,7 @@ GPUBatch **DRW_cache_object_surface_material_get(struct Object *ob,
     case OB_HAIR:
       return NULL;
     case OB_POINTCLOUD:
-      return NULL;
+      return DRW_cache_pointcloud_surface_shaded_get(ob, gpumat_array, gpumat_array_len);
     case OB_VOLUME:
       return NULL;
     default:
@@ -3289,9 +3289,16 @@ GPUBatch *DRW_cache_lattice_vert_overlay_get(Object *ob)
 
 GPUBatch *DRW_cache_pointcloud_get_dots(Object *object)
 {
+  BLI_assert(object->type == OB_POINTCLOUD);
   return DRW_pointcloud_batch_cache_get_dots(object);
 }
 
+GPUBatch *DRW_cache_pointcloud_surface_get(Object *object)
+{
+  BLI_assert(object->type == OB_POINTCLOUD);
+  return DRW_pointcloud_batch_cache_get_surface(object);
+}
+
 /* -------------------------------------------------------------------- */
 /** \name Volume
  * \{ */