diff --git a/data/shaders/shadowmappingcascade/scene.frag b/data/shaders/shadowmappingcascade/scene.frag
index 470b5da6..73c3721c 100644
--- a/data/shaders/shadowmappingcascade/scene.frag
+++ b/data/shaders/shadowmappingcascade/scene.frag
@@ -33,12 +33,11 @@ const mat4 biasMat = mat4(
 	0.5, 0.5, 0.0, 1.0 
 );
 
-float textureProj(vec4 P, vec2 offset, uint cascadeIndex)
+float textureProj(vec4 shadowCoord, vec2 offset, uint cascadeIndex)
 {
 	float shadow = 1.0;
 	float bias = 0.005;
 
-	vec4 shadowCoord = P / P.w;
 	if ( shadowCoord.z > -1.0 && shadowCoord.z < 1.0 ) {
 		float dist = texture(shadowMap, vec3(shadowCoord.st + offset, cascadeIndex)).r;
 		if (shadowCoord.w > 0 && dist < shadowCoord.z - bias) {
@@ -121,4 +120,4 @@ void main()
 				break;
 		}
 	}
-}
\ No newline at end of file
+}