[Bf-blender-cvs] [f8ea2c92db4] blender2.8: Suppress assert for meshes with no faces

[Campbell Barton]

Commit: f8ea2c92db4a49b2de8bd3059190d2342380c03c
Author: Campbell Barton
Date:   Fri Jun 2 16:42:39 2017 +1000
Branches: blender2.8
https://developer.blender.org/rBf8ea2c92db4a49b2de8bd3059190d2342380c03c

Suppress assert for meshes with no faces

===================================================================

M	source/blender/draw/intern/draw_cache_impl_mesh.c

===================================================================

diff --git a/source/blender/draw/intern/draw_cache_impl_mesh.c b/source/blender/draw/intern/draw_cache_impl_mesh.c
index aebebc92ec2..012f840d51b 100644
--- a/source/blender/draw/intern/draw_cache_impl_mesh.c
+++ b/source/blender/draw/intern/draw_cache_impl_mesh.c
@@ -538,7 +538,9 @@ static MeshRenderData *mesh_render_data_create(Mesh *me, const int types)
 				/* note: BKE_editmesh_loop_tangent_calc calculates 'CD_TANGENT',
 				 * not 'CD_MLOOPTANGENT' (as done below). It's OK, they're compatible. */
 				rdata->cd.layers.tangent[i] = CustomData_get_layer_n(&rdata->cd.output.ldata, CD_TANGENT, i);
-				BLI_assert(rdata->cd.layers.tangent[i] != NULL);
+				if (rdata->tri_len != 0) {
+					BLI_assert(rdata->cd.layers.tangent[i] != NULL);
+				}
 			}
 		}