Fix out of bounds index in MarbleTexture. Issue mmp#252

klonggan · Oct 12, 2019 · 22eded1 · 22eded1
1 parent 9adaee8
commit 22eded1
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/textures/marble.h b/src/textures/marble.h
@@ -72,7 +72,7 @@ class MarbleTexture : public Texture<Spectrum> {
         };
 #define NC sizeof(c) / sizeof(c[0])
 #define NSEG (NC - 3)
-        int first = std::floor(t * NSEG);
+        int first = std::min(1, int(std::floor(t * NSEG)));
         t = (t * NSEG - first);
         Spectrum c0 = Spectrum::FromRGB(c[first]);
         Spectrum c1 = Spectrum::FromRGB(c[first + 1]);