diff --git a/src/Nazara/Graphics/Resources/Shaders/Modules/Math/CookTorrancePBR.nzsl b/src/Nazara/Graphics/Resources/Shaders/Modules/Math/CookTorrancePBR.nzsl
index 3486567be..bb1533c93 100644
--- a/src/Nazara/Graphics/Resources/Shaders/Modules/Math/CookTorrancePBR.nzsl
+++ b/src/Nazara/Graphics/Resources/Shaders/Modules/Math/CookTorrancePBR.nzsl
@@ -50,15 +50,15 @@ fn FresnelSchlick(cosTheta: f32, F0: vec3[f32]) -> vec3[f32]
 }  
 
 [export]
-fn ComputeLightRadiance(lightColor: vec3[f32], lightDir: vec3[f32], lightAttenuation: f32, albedoFactor: vec3[f32], eyeVec: vec3[f32], F0: vec3[f32], normal: vec3[f32], metallic: f32, roughness: f32) -> vec3[f32]
+fn ComputeLightRadiance(lightColor: vec3[f32], posToLight: vec3[f32], lightAttenuation: f32, albedoFactor: vec3[f32], eyeVec: vec3[f32], F0: vec3[f32], normal: vec3[f32], metallic: f32, roughness: f32) -> vec3[f32]
 {
 	let radiance = lightColor * lightAttenuation;
 
-	let halfDir = normalize(lightDir + eyeVec);
+	let halfDir = normalize(posToLight + eyeVec);
 
 	// Cook-Torrance BRDF
 	let NDF = DistributionGGX(normal, halfDir, roughness);
-	let G = GeometrySmith(normal, eyeVec, lightDir, roughness);
+	let G = GeometrySmith(normal, eyeVec, posToLight, roughness);
 	let F = FresnelSchlick(max(dot(halfDir, eyeVec), 0.0), F0);
 
 	let kS = F;
@@ -66,9 +66,9 @@ fn ComputeLightRadiance(lightColor: vec3[f32], lightDir: vec3[f32], lightAttenua
 	diffuse *= 1.0 - metallic;
 
 	let numerator = NDF * G * F;
-	let denominator = 4.0 * max(dot(normal, eyeVec), 0.0) * max(dot(normal, lightDir), 0.0);
+	let denominator = 4.0 * max(dot(normal, eyeVec), 0.0) * max(dot(normal, posToLight), 0.0);
 	let specular = numerator / max(denominator, 0.0001);
 
-	let NdotL = max(dot(normal, lightDir), 0.0);
+	let NdotL = max(dot(normal, posToLight), 0.0);
 	return (diffuse * albedoFactor + specular) * radiance * NdotL;
 }
diff --git a/src/Nazara/Graphics/Resources/Shaders/PhysicallyBasedMaterial.nzsl b/src/Nazara/Graphics/Resources/Shaders/PhysicallyBasedMaterial.nzsl
index 5cd56218a..93f8a654d 100644
--- a/src/Nazara/Graphics/Resources/Shaders/PhysicallyBasedMaterial.nzsl
+++ b/src/Nazara/Graphics/Resources/Shaders/PhysicallyBasedMaterial.nzsl
@@ -212,7 +212,7 @@ fn ComputeLighting(color: vec3[f32], input: VertOut) -> vec3[f32]
 		let lightToPosNorm = lightToPos / max(dist, 0.0001);
 
 		let shadowFactor = ComputePointLightShadow(light, shadowMapsPoint[lightIndex], dist, lightToPosNorm);
-		let radiance = ComputeLightRadiance(light.color.rgb, lightToPosNorm, attenuation, albedoFactor, eyeVec, F0, normal, metallic, roughness);
+		let radiance = ComputeLightRadiance(light.color.rgb, -lightToPosNorm, attenuation, albedoFactor, eyeVec, F0, normal, metallic, roughness);
 
 		lightRadiance += shadowFactor * radiance;
 	}
@@ -234,7 +234,7 @@ fn ComputeLighting(color: vec3[f32], input: VertOut) -> vec3[f32]
 		let lambert = clamp(dot(normal, -lightToPosNorm), 0.0, 1.0);
 
 		let shadowFactor = ComputeSpotLightShadow(light, shadowMapsSpot[lightIndex], input.worldPos, lambert);
-		let radiance = ComputeLightRadiance(light.color.rgb, lightToPosNorm, attenuation, albedoFactor, eyeVec, F0, normal, metallic, roughness);
+		let radiance = ComputeLightRadiance(light.color.rgb, -lightToPosNorm, attenuation, albedoFactor, eyeVec, F0, normal, metallic, roughness);
 
 		lightRadiance += shadowFactor * radiance;
 	}