mirror of
https://github.com/Ttanasart-pt/Pixel-Composer.git
synced 2024-11-14 14:33:53 +01:00
26 lines
561 B
GLSL
26 lines
561 B
GLSL
//
|
|
// Simple passthrough fragment shader
|
|
//
|
|
varying vec2 v_vTexcoord;
|
|
varying vec4 v_vColour;
|
|
|
|
#define PI 3.14159265359
|
|
|
|
uniform float strength;
|
|
|
|
void main() {
|
|
float inCircle = length(v_vTexcoord - vec2(0.5));
|
|
|
|
if(inCircle > 0.5) {
|
|
gl_FragColor = vec4(128. / 255., 128. / 255., 0., 0.);
|
|
return;
|
|
}
|
|
|
|
vec2 pos = vec2(0.5) - v_vTexcoord;
|
|
float rad = inCircle * 2.;
|
|
float angle = atan(pos.y, pos.x);
|
|
float dist = (1. - rad) * strength;
|
|
|
|
gl_FragColor = vec4(128. / 255. + cos(angle) * 0.125 * dist, 128. / 255. + sin(angle) * 0.125 * dist, 0., 1.);
|
|
}
|