Setup multiple target basic shaders

shader/dualTwoD/arc.frag

@@ -0,0 +1,13 @@
+#version 430 core
+in vec4 vColor;
+in vec3 vPosition;
+in vec3 vparams;
+layout (location=0) out vec4 fColor;
+layout (location=1) out vec3 fPosition;
+void main()
+{
+  float d = (dot(vec2(vparams.xy),vec2(vparams.xy)));
+  if ( d > 1 || d < vparams.z ) {discard;}
+  fColor = vColor;
+  fPosition = vPosition;
+}