ascension: shader/rectangle_frag.glsl@d6c2f028d8c9 (annotated)

shader/rectangle_frag.glsl@d6c2f028d8c9 (annotated)

shader/rectangle_frag.glsl

Tue, 17 Jun 2025 19:00:20 +0200

author: Mike Becker <universe@uap-core.de>
date: Tue, 17 Jun 2025 19:00:20 +0200
changeset 157: d6c2f028d8c9
parent 151: 42960d0c879b
child 158: f650994ec543
permissions: -rw-r--r--

use functions instead of Boolean logic

 layout(location = 0) out vec4 diffuse;
 in vec2 uvcoord;
 uniform vec4 color;
 uniform vec2 size;
 #ifndef FILL
 uniform float thickness;
 #endif
 void main(void) {
 #ifdef FILL
     diffuse = color;
 #else
     if (any(notEqual(1.0-step(thickness, uvcoord)+step(size-thickness, uvcoord), vec2(0.0)))) {
         diffuse = color;
     } else {
         discard;
     }
 #endif
 }