Reorganise shaders

shader/Old/wallLight.frag

@@ -0,0 +1,10 @@
+#version 430 core
+in vec2 vDistField;
+in float vLum;
+out vec4 fColor;
+
+void main()
+{
+  float l = dot(vDistField,vDistField);
+  fColor = vec4 (pow(1 - l,2),0,0,1);
+}