[Fix] Adding early out for clustered lights to fix performance regres…

…sion (#5088) Co-authored-by: Martin Valigursky <mvaligursky@snapchat.com>
playcanvas · Feb 22, 2023 · 2f2ccec · 2f2ccec
1 parent 1872467
commit 2f2ccec
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/scene/shader-lib/chunks/lit/frag/clusteredLight.js b/src/scene/shader-lib/chunks/lit/frag/clusteredLight.js
@@ -594,6 +594,10 @@ void addClusteredLights() {
 
                 // using a single channel texture with data in alpha channel
                 float lightIndex = texelFetch(clusterWorldTexture, ivec2(int(clusterU) + lightCellIndex, clusterV), 0).x;
+
+                if (lightIndex <= 0.0)
+                        return;
+
                 evaluateClusterLight(lightIndex * 255.0); 
             }