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Improve rendering

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This commit is contained in:
Andras Schmelczer 2023-04-30 16:02:07 +01:00
commit afe2a67ba0
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GPG key ID: FC8F2C3D3D1A718C
20 changed files with 147 additions and 95 deletions
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19
src/pipelines/brush/brush.wgsl
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@ -3,7 +3,7 @@ struct Settings {
deltaTime: f32,
time: f32,
brushWidth: f32,
brushBlurWidth: f32
brushWidthRandomness: f32
};
@group(0) @binding(0) var<uniform> settings: Settings;
@ -34,17 +34,20 @@ fn fragment(
@location(1) start: vec2<f32>,
@location(2) end: vec2<f32>
) -> @location(0) vec4<f32> {
let pa = (screenPosition - start);
let direction = (end - start);
let q = clamp(dot(pa, direction) / dot(direction, direction), 0, 1);
var distance = distanceFromLine(screenPosition, start, end);
let noise = textureSample(noise, Sampler, screenPosition / settings.size);
let distance = length(pa - direction * q) + noise.r * 5;
distance += noise.r * settings.brushWidthRandomness;
if(distance > settings.brushWidth) {
discard;
}
let strength = clamp((settings.brushWidth - distance) / settings.brushBlurWidth, 0, 1);
return vec4(0, 0, 0, strength);
return vec4(0, 0, 0, 1);
}
fn distanceFromLine(position: vec2<f32>, start: vec2<f32>, end: vec2<f32>) -> f32 {
let pa = position - start;
let direction = end - start;
let q = clamp(dot(pa, direction) / dot(direction, direction), 0, 1);
return length(pa - direction * q);
}