Renamed shaders

resources/shaders/options_120.fs

@@ -0,0 +1,27 @@
+// version 120 is needed for gl_PointCoord
+#version 120
+
+uniform vec3 uniform_color;
+uniform float percent_outline_radius;
+uniform float percent_center_radius;
+
+vec4 hardcoded_color(float radius, vec3 color)
+{
+    return ((radius < 0.15) || (radius > 0.85)) ? vec4(0.5 * color, 1.0) : vec4(color, 1.0);
+}
+
+vec4 customizable_color(float radius, vec3 color)
+{
+    return ((radius < percent_center_radius) || (radius > 1.0 - percent_outline_radius)) ?
+            vec4(0.5 * color, 1.0) : vec4(color, 1.0);
+}
+
+void main()
+{
+    vec2 pos = (gl_PointCoord - 0.5) * 2.0;
+    float radius = length(pos);
+    if (radius > 1.0)
+        discard;
+
+    gl_FragColor = customizable_color(radius, uniform_color);
+}