shader changes that don't do anything

assets/materials/walls/walls.gdshader

@@ -28,6 +28,7 @@ uniform float heightScale = 1.0;
 
 varying vec3 worldPos;
 varying vec3 worldNormal;
+varying vec3 diffuse;
 
 
 void vertex() {
@@ -177,12 +178,14 @@ void fragment() {
     // sample and output
     SPECULAR = specular;
     ALBEDO = triplanarSample(texCoordX, texCoordY, texCoordZ, blend, yDot).rgb;
+	diffuse = ALBEDO;
     ROUGHNESS = triplanarRoughness(texCoordX, texCoordY, texCoordZ, blend, yDot).r;
     NORMAL = mix(worldNormal, triplanarNormal(yDot, texCoordX, texCoordY, texCoordZ, blend), normalMapStrength);
     NORMAL = normalize((VIEW_MATRIX * vec4(NORMAL, 0.0)).xyz);
 }
 
-//void light() {
-//	// Called for every pixel for every light affecting the material.
-//	// Uncomment to replace the default light processing function with this one.
-//}
+void light() {
+	float lambert = dot(NORMAL, LIGHT);
+	float halfLambert = pow(lambert*0.5 + 0.5, 2);
+	DIFFUSE_LIGHT = halfLambert * ATTENUATION * LIGHT_COLOR / PI;
+}