Draw circles without using a geometry shader, layer offset broken

shader/dualTwoD/arc.vert

@@ -3,6 +3,7 @@ layout (location = 0) in vec4 pos;
 layout (location = 1) in vec4 col;
 layout (location = 2) in vec3 boxXboxYwidth;
 layout (std140, binding = 0) uniform TheMat { mat4 theMat; } ;
+layout (location = 0) uniform int layoff;
 out vec4 vCol;
 out vec3 vPos;
 out vec3 vparams;