LYGIA Shader Library

checkerTile (lygia/v1.1.6/space/checkerTile)

Return a black or white in a square checker patter

Use:

<vec4> checkerTile(<vec4> tile)

<vec4> checkerTile(<vec2> st [, <vec2> scale])

Check it on Github


#ifndef FNC_CHECKERTILE
#define FNC_CHECKERTILE
float checkerTile(vec4 t) {
    vec2 c = mod(t.zw,2.);
    return abs(c.x-c.y);
}

float checkerTile(vec2 v) {
    return checkerTile(sqTile(v));
}

float checkerTile(vec2 v, float s) {
    return checkerTile(v * s);
}

float checkerTile(vec2 v, vec2 s) {
    return checkerTile(v * s);
}
#endif

Use:

<float4> checkerTile(<float4> tile)

<float4> checkerTile(<float2> st [, <float2> scale])

Check it on Github


#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

Examples

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