32 lines
No EOL
851 B
HLSL
32 lines
No EOL
851 B
HLSL
#include "sqTile.hlsl"
|
|
|
|
/*
|
|
contributors: Patricio Gonzalez Vivo
|
|
description: 'Return a black or white in a square checker patter'
|
|
use:
|
|
- <float4> checkerTile(<float4> tile)
|
|
- <float4> checkerTile(<float2> st [, <float2> scale])
|
|
license:
|
|
- Copyright (c) 2021 Patricio Gonzalez Vivo under Prosperity License - https://prosperitylicense.com/versions/3.0.0
|
|
- Copyright (c) 2021 Patricio Gonzalez Vivo under Patron License - https://lygia.xyz/license
|
|
*/
|
|
|
|
#ifndef FNC_CHECKERTILE
|
|
#define FNC_CHECKERTILE
|
|
float checkerTile(float4 tile) {
|
|
float2 c = mod(tile.zw, 2.0);
|
|
return abs(c.x-c.y);
|
|
}
|
|
|
|
float checkerTile(float2 st) {
|
|
return checkerTile(sqTile(st));
|
|
}
|
|
|
|
float checkerTile(float2 st, float scale) {
|
|
return checkerTile(st * scale);
|
|
}
|
|
|
|
float checkerTile(float2 st, float2 scale) {
|
|
return checkerTile(st * scale);
|
|
}
|
|
#endif |