Fix T79052: Cycles new sky texture fails with sun size zero

Clamp to a minimum angle to avoid precision issues.

1 files changed, 6 insertions, 0 deletions

diff --git a/intern/cycles/render/nodes.h b/intern/cycles/render/nodes.h
index 326f1d14168..c21bcacb3ce 100644
--- a/intern/cycles/render/nodes.h
+++ b/intern/cycles/render/nodes.h
@@ -179,6 +179,12 @@ class SkyTextureNode : public TextureNode {
   float ozone_density;
   float3 vector;
   ImageHandle handle;
+
+  float get_sun_size()
+  {
+    /* Clamping for numerical precision. */
+    return fmaxf(sun_size, 0.0005f);
+  }
 };
 
 class OutputNode : public ShaderNode {