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, 4 insertions, 0 deletions

diff --git a/source/blender/draw/intern/draw_cache_impl.h b/source/blender/draw/intern/draw_cache_impl.h
index 5cf1c24af0b..96d351794e6 100644
--- a/source/blender/draw/intern/draw_cache_impl.h
+++ b/source/blender/draw/intern/draw_cache_impl.h
@@ -144,6 +144,10 @@ int DRW_hair_material_count_get(struct Hair *hair);
 int DRW_pointcloud_material_count_get(struct PointCloud *pointcloud);
 
 struct GPUBatch *DRW_pointcloud_batch_cache_get_dots(struct Object *ob);
+struct GPUBatch *DRW_pointcloud_batch_cache_get_surface(struct Object *ob);
+struct GPUBatch **DRW_cache_pointcloud_surface_shaded_get(struct Object *ob,
+                                                          struct GPUMaterial **gpumat_array,
+                                                          uint gpumat_array_len);
 
 /* Volume */
 int DRW_volume_material_count_get(struct Volume *volume);