star-3d

commit 215a38e4582089d2233842bcddf2cabc780fda44
parent 96a07e217c782b471045533813456c046d02dd93
Author: Christophe Coustet <christophe.coustet@meso-star.com>
Date:   Tue, 19 Jan 2021 17:12:08 +0100

Manage an Embree bug (uv out of range).

Diffstat:
M
src/s3d_scene_view_trace_ray.c
 | 
8
++++----

1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/src/s3d_scene_view_trace_ray.c b/src/s3d_scene_view_trace_ray.c
@@ -116,13 +116,13 @@ hit_setup
   ASSERT(hit->prim.shape__);
   ASSERT(((struct geometry*)hit->prim.shape__)->type == GEOM_MESH
        ||((struct geometry*)hit->prim.shape__)->type == GEOM_SPHERE);
-
-  hit->uv[0] = ray_hit->hit.u;
-  hit->uv[1] = ray_hit->hit.v;
+  
+  /* Handle Embree returning uv out of range */
+  hit->uv[0] = CLAMP(ray_hit->hit.u, 0, 1);
+  hit->uv[1] = CLAMP(ray_hit->hit.v, 0, 1);
 
   if(((struct geometry*)hit->prim.shape__)->type == GEOM_MESH) {
     w = 1.f - hit->uv[0] - hit->uv[1];
-    ASSERT(w <= 1.f); /* This may not occurs */
     if(w < 0.f) { /* Handle precision error */
       if(hit->uv[0] > hit->uv[1]) hit->uv[0] += w;
       else hit->uv[1] += w;