Fix T65378 Eevee: Glitches in ESM shadowmapping

This happen to be a NaN caused by an infinite sum in the shadow copy shader.
Referenced by issue #65378, Sun light with default ESM (Exponential Shadow Mapping) glitches
2019-06-04 18:39:48 +02:00 · 2019-06-04 18:39:48 +02:00 · 4ddc840314 · 2023-02-14 06:00:47 +01:00
parent 942a748d5d
commit 4ddc840314
1 changed files with 2 additions and 2 deletions
--- a/source/blender/draw/engines/eevee/shaders/shadow_copy_frag.glsl
+++ b/source/blender/draw/engines/eevee/shaders/shadow_copy_frag.glsl
@ -194,6 +194,6 @@ void main()
 #ifdef ESM
  accum = ln_space_prefilter_finalize(ref, accum);
 #endif
-
-  FragColor = vec2(accum).xyxy;
+  /* Clamp infinite sum. */
+  FragColor = vec2(clamp(accum, 0.0, 1e16)).xyxy;
 }