Commit: 8ad37b0d224fcf3eb09dd2b7def8bdcc386af1a1
Author: Bastien Montagne
Date: Mon Apr 13 15:41:57 2015 +0200
Branches: master
https://developer.blender.org/rB8ad37b0d224fcf3eb09dd2b7def8bdcc386af1a1
Fix T44359: `mesh_normals_loop_custom_set()` would not behave correctly with
zero-normals.
Zero-normals here are used as a shortcut to say 'use auto-computed values'.
So we have to do so in pre-process steps!
===================================================================
M source/blender/blenkernel/intern/mesh_evaluate.c
===================================================================
diff --git a/source/blender/blenkernel/intern/mesh_evaluate.c
b/source/blender/blenkernel/intern/mesh_evaluate.c
index ceb9b01..bbc175f 100644
--- a/source/blender/blenkernel/intern/mesh_evaluate.c
+++ b/source/blender/blenkernel/intern/mesh_evaluate.c
@@ -1349,6 +1349,10 @@ static void mesh_normals_loop_custom_set(
const int nidx = lidx;
float *nor = custom_loopnors[nidx];
+ if (is_zero_v3(nor)) {
+ nor = lnors[nidx];
+ }
+
if (!org_nor) {
org_nor = nor;
}
@@ -1408,6 +1412,10 @@ static void mesh_normals_loop_custom_set(
const int nidx = use_vertices ?
(int)mloops[lidx].v : lidx;
float *nor = custom_loopnors[nidx];
+ if (is_zero_v3(nor)) {
+ nor = lnors[nidx];
+ }
+
nbr_nors++;
add_v3_v3(avg_nor, nor);
BLI_SMALLSTACK_PUSH(clnors_data, (short
*)r_clnors_data[lidx]);
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