@luma.gl/shadertools
Version:
Shader module system for luma.gl
22 lines • 1.45 kB
JavaScript
const fs = "uniform vec2 center;\nuniform float scale;\n\nvec4 hexagonalPixelate_sampleColor(sampler2D texture, vec2 texSize, vec2 texCoord) {\n vec2 tex = (texCoord * texSize - center * texSize) / scale;\n tex.y /= 0.866025404;\n tex.x -= tex.y * 0.5;\n\n vec2 a;\n if (tex.x + tex.y - floor(tex.x) - floor(tex.y) < 1.0) {\n a = vec2(floor(tex.x), floor(tex.y));\n }\n else a = vec2(ceil(tex.x), ceil(tex.y));\n vec2 b = vec2(ceil(tex.x), floor(tex.y));\n vec2 c = vec2(floor(tex.x), ceil(tex.y));\n\n vec3 TEX = vec3(tex.x, tex.y, 1.0 - tex.x - tex.y);\n vec3 A = vec3(a.x, a.y, 1.0 - a.x - a.y);\n vec3 B = vec3(b.x, b.y, 1.0 - b.x - b.y);\n vec3 C = vec3(c.x, c.y, 1.0 - c.x - c.y);\n\n float alen = length(TEX - A);\n float blen = length(TEX - B);\n float clen = length(TEX - C);\n\n vec2 choice;\n if (alen < blen) {\n if (alen < clen) choice = a;\n else choice = c;\n } else {\n if (blen < clen) choice = b;\n else choice = c;\n }\n\n choice.x += choice.y * 0.5;\n choice.y *= 0.866025404;\n choice *= scale / texSize;\n\n return texture2D(texture, choice + center);\n}\n";
const uniforms = {
center: {
value: [0.5, 0.5],
hint: 'screenspace'
},
scale: {
value: 10,
min: 1,
softMin: 5,
softMax: 50
}
};
export const hexagonalPixelate = {
name: 'hexagonalPixelate',
uniforms,
fs,
passes: [{
sampler: true
}]
};
//# sourceMappingURL=hexagonalpixelate.js.map