Update rlgl.h

Author: raysan5

src/rlgl.h

@@ -1614,16 +1614,19 @@ void rlNormal3f(float x, float y, float z)
         normalz = RLGL.State.transform.m2*x + RLGL.State.transform.m6*y + RLGL.State.transform.m10*z;
     }
 
-/* Normalize the vector if required. Default behavior assumes the normal vector is in the correct space for what the shader expects.
-   float length = sqrtf(normalx * normalx + normaly * normaly + normalz * normalz);
+    // NOTE: Default behavior assumes the normal vector is in the correct space for what the shader expects,
+    // it could be not normalized to 0.0f..1.0f, magnitud can be useed for some effects
+    /*
+    // WARNING: Vector normalization if required
+    float length = sqrtf(normalx*normalx + normaly*normaly + normalz*normalz);
     if (length != 0.0f)
     {
         float ilength = 1.0f/length;
         normalx *= ilength;
         normaly *= ilength;
         normalz *= ilength;
     }
-*/
+    */
     RLGL.State.normalx = normalx;
     RLGL.State.normaly = normaly;
     RLGL.State.normalz = normalz;