mirror of
https://github.com/Ttanasart-pt/Pixel-Composer.git
synced 2024-11-14 14:33:53 +01:00
30 lines
587 B
GLSL
30 lines
587 B
GLSL
varying vec2 v_vTexcoord;
|
|
varying vec4 v_vColour;
|
|
|
|
uniform vec4 color;
|
|
uniform int fill;
|
|
uniform float thickness;
|
|
uniform float antialias;
|
|
uniform float radius;
|
|
|
|
void main() {
|
|
float th = thickness == 0.? 0.05 : thickness;
|
|
float aa = antialias == 0.? 0.05 : antialias;
|
|
float rr = radius == 0.? 0.5 : radius;
|
|
|
|
float dist = length(v_vTexcoord - .5) / rr - (1. - th - aa);
|
|
float a;
|
|
|
|
if(fill == 0) {
|
|
dist = abs(dist);
|
|
a = smoothstep(th + aa, th, dist);
|
|
|
|
} else if(fill == 1) {
|
|
a = smoothstep(aa, 0., dist);
|
|
}
|
|
|
|
vec4 c = mix(vec4(0.), color, a);
|
|
|
|
gl_FragColor = c;
|
|
}
|