Fix to Lightmapper’s ambient baking when clustered lighting is enabled (#7433)

Co-authored-by: Martin Valigursky <[email protected]>

Author: mvaligursky

examples/src/examples/graphics/lights-baked-a-o.example.mjs

@@ -1,4 +1,3 @@
-// @config WEBGPU_DISABLED
 import { data } from 'examples/observer';
 import { deviceType, rootPath } from 'examples/utils';
 import * as pc from 'playcanvas';

examples/src/examples/graphics/lights-baked.example.mjs

@@ -1,4 +1,3 @@
-// @config WEBGPU_DISABLED
 import { deviceType, rootPath } from 'examples/utils';
 import * as pc from 'playcanvas';
 

src/framework/lightmapper/bake-light.js

@@ -19,9 +19,9 @@ class BakeLight {
         // don't use cascades
         light.numCascades = 1;
 
-        if (this.scene.clusteredLightingEnabled) {
-            // if clustered shadows are disabled, disable them on the light
-            light.castShadows = light.bakeShadows && lightingParams.shadowsEnabled;
+        // if clustered shadows are disabled, disable them on the light
+        if (this.scene.clusteredLightingEnabled && !lightingParams.shadowsEnabled) {
+            light.castShadows = false;
         }
 
         // bounds for non-directional light