Rename fadeCircle shaders to lightmapCircle

shader/lightmapCircle.frag

@@ -0,0 +1,12 @@
+#version 430 core
+in vec2 cenPosT;
+in vec2 gParams;
+out vec4 fColor;
+
+void main()
+{
+  vec2 pos = gl_FragCoord.xy;
+  float dist = min(1 , 2*distance(pos,cenPosT) / (gParams.x));
+  float c = gParams.y * pow(1-dist,2);
+  fColor = vec4( c,c,c ,c  );
+}