mirror of
https://github.com/italicsjenga/slang-shaders.git
synced 2024-11-23 16:11:31 +11:00
21 lines
548 B
C
21 lines
548 B
C
|
#ifndef CORNER
|
||
|
|
#define CORNER
|
||
|
|
|
||
|
|
#pragma parameter cornersize "Corner Size" 0.03 0.001 1.0 0.005
|
||
|
|
#pragma parameter cornersmooth "Corner Smoothness" 1000.0 80.0 2000.0 100.0
|
||
|
|
|
||
|
|
const vec2 corner_aspect = vec2(1.0, 0.75);
|
||
|
|
|
||
|
|
float corner(vec2 coord)
|
||
|
|
{
|
||
|
|
coord = (coord - vec2(0.5)) + vec2(0.5, 0.5);
|
||
|
|
coord = min(coord, vec2(1.0) - coord) * corner_aspect;
|
||
|
|
vec2 cdist = vec2(cornersize);
|
||
|
|
coord = (cdist - min(coord, cdist));
|
||
|
|
float dist = sqrt(dot(coord, coord));
|
||
|
|
|
||
|
|
return clamp((cdist.x - dist)*cornersmooth, 0.0, 1.0);
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|