ShadowFilterNode: Fix TSL warning in `VSMShadowFilter`. (#32836)

src/nodes/lighting/ShadowFilterNode.js

@@ -190,23 +190,23 @@ export const VSMShadowFilter = /*@__PURE__*/ Fn( ( { depthTexture, shadowCoord,
 
 	const hardShadow = step( shadowCoord.z, mean );
 
-	// Early return if fully lit
-	If( hardShadow.equal( 1.0 ), () => {
+	const output = float( 1 ).toVar(); // default, fully lit
 
-		return float( 1.0 );
+	If( hardShadow.notEqual( 1.0 ), () => {
 
-	} );
+		// Distance from mean
+		const d = shadowCoord.z.sub( mean );
 
-	// Distance from mean
-	const d = shadowCoord.z.sub( mean );
+		// Chebyshev's inequality for upper bound on probability
+		let p_max = variance.div( variance.add( d.mul( d ) ) );
 
-	// Chebyshev's inequality for upper bound on probability
-	let p_max = variance.div( variance.add( d.mul( d ) ) );
+		// Reduce light bleeding by remapping [amount, 1] to [0, 1]
+		p_max = clamp( sub( p_max, 0.3 ).div( 0.65 ) );
 
-	// Reduce light bleeding by remapping [amount, 1] to [0, 1]
-	p_max = clamp( sub( p_max, 0.3 ).div( 0.65 ) );
+		output.assign( max( hardShadow, p_max ) );
 
-	return max( hardShadow, p_max );
+	} );
+	return output;
 
 } );