playcanvas
Version:
Open-source WebGL/WebGPU 3D engine for the web
38 lines (37 loc) • 1.04 kB
JavaScript
var opacity_dither_default = `
uniform blueNoiseJitter: vec4f;
var blueNoiseTex32 : texture_2d<f32>;
var blueNoiseTex32Sampler : sampler;
fn opacityDither(alpha: f32, id: f32) {
if (alpha <= 0.0) {
discard;
}
if (alpha >= 1.0) {
return;
}
var noise: f32 = bayer8(floor((pcPosition.xy + uniform.blueNoiseJitter.xy + id) % vec2f(8.0))) / 64.0;
var uv = fract(pcPosition.xy / 32.0 + uniform.blueNoiseJitter.xy + id);
var noise: f32 = textureSampleLevel(blueNoiseTex32, blueNoiseTex32Sampler, uv, 0.0).y;
var magic = vec3f(0.06711056, 0.00583715, 52.9829189);
var noise: f32 = fract(magic.z * fract(dot(pcPosition.xy + uniform.blueNoiseJitter.xy + id, magic.xy)));
noise = pow(noise, 2.2);
if (alpha < noise) {
discard;
}
}
`;
export {
opacity_dither_default as default
};