Start simplifying cloud shader

shader/cloud/basic.frag

@@ -16,12 +16,15 @@ void main()
     // when a light is direcly above the cloud
     float d = dot(vControls,vControls);
     if (d > 1) {discard;}
-    //fCol = vCol;
     fCol = vec4(vCol.xyz,vCol.w*(1-d));
+    //fCol = vCol;
     //float rad = vCenterSize.w*0.5;
     float rad = vCenterSize.w;
     float h = (1-d) * rad;
     fPos = vec4(vPosID.xy, vPosID.z + h, vCol.w*(1-d));
-    vec3 fn1 = fPos.z*normalize(vec3(vCenterSize.xyz - fPos.xyz));
-    fNorm = vec4(fn1,fPos.w);
+    //vec3 vCen = 
+    //vec3 fn1 = fPos.z*normalize(vec3(vCenterSize.xyz - fPos.xyz));
+    vec3 fn1 = fPos.z*normalize(vec3(vCenterSize.xy - vPosID.xy,0));
+    //fNorm = vec4(fn1,fPos.w);
+    fNorm = vec4(vControls.xy, 0.1 ,fPos.w);
 }