screen space pattern failed, needs screen space uv coordinate on CompDraw shader

data/shaders/comp-draw.glsl

@@ -28,6 +28,7 @@ uniform mediump int blend_mode;
 uniform mediump vec2 resolution;
 uniform bool lock;
 uniform bool mask;
+uniform bool draw_on_screen;
 
 uniform bool use_dual;
 uniform sampler2D tex_dual;
@@ -54,6 +55,7 @@ void main()
 
     if (use_pattern)
     {
+        //mediump vec2 uv2 = draw_on_screen ? gl_FragCoord.st / resolution : uv;
         mediump vec2 rscale = resolution / vec2(512.0);
         mediump float patt = texture(tex_pattern, uv * (0.5 / pattern_scale) * rscale + pattern_offset).r;
         if (pattern_invert)