hmmm

learning/PixelSpirit/hierophant.frag

@@ -31,6 +31,11 @@ float fill(float x, float size) {
   return 1.-step(size, x);
 }
 
+float stroke(in float x_coor, float s, float width){
+  float d = step(s,x_coor+width*.5)-step(s,x_coor-width*.5);
+  return clamp(d, 0.,1.);
+}
+
 void main() {
   vec2 st = gl_FragCoord.xy/u_resolution;
   vec3 color = vec3(0.0,0.0,0.0);
@@ -41,6 +46,10 @@ void main() {
   //i don't understand what happens here
   //it has to be fract causing this to look like that
   color *= step(.5,fract(cross*4.));
+  color *= step(1.,cross);
+  color += fill(cross,.5);
+  color += stroke(rect,.65,.05);
+  color += stroke(rect,.75,.025);
   
   gl_FragColor = vec4(color, alpha);
 }