solstice-solver

commit 3f14c6cb263b01f443bfdc4d6513272938f06fbb
parent 22c8ecf61b7b500078ba43795ae455435fbc920f
Author: Vincent Forest <vincent.forest@meso-star.com>
Date:   Fri, 27 Jan 2017 13:52:27 +0100

Fix self hit on punched surfaces

Diffstat:
M
src/ssol_scene.c
 | 
10
+++++++---

1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/src/ssol_scene.c b/src/ssol_scene.c
@@ -407,9 +407,13 @@ hit_filter_function
       if(dst >= FLT_MAX) {
         /* No projection is found => the ray does not intersect the quadric */
         return 1;
-      } else {
-        hit_side = d3_dot(dir, N) < 0 ? SSOL_FRONT : SSOL_BACK;
-        if(inst == rdata->inst_from) {
+      } else if(inst == rdata->inst_from) {
+
+        if(hit->distance <= rdata->range_min) {
+          /* Handle RT numerical imprecision, the hit is below the lower bound
+           * of the ray range. */
+          return 1;
+        } else {
           /* If the intersected instance is the one from which the ray starts,
            * ensure that the ray does not intersect the opposite side of the
            * quadric */