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Improve drawing

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Andras Schmelczer 2023-04-27 20:55:48 +01:00
parent 9f01a9e236
commit de7fcc15d0
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GPG key ID: FC8F2C3D3D1A718C
6 changed files with 221 additions and 56 deletions
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15
src/pipelines/diffusion/diffuse.wgsl
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@ -1,14 +1,11 @@
struct Settings {
size : vec2<f32>,
swipePrevious : vec2<f32>,
swipeCurrent : vec2<f32>,
diffusionRate : f32,
decayRate : f32,
deltaTime : f32,
time : f32,
swipeRadius : f32,
swipeBlur : f32,
isSwipeActive : f32
};
@group(0) @binding(0) var<uniform> settings : Settings;
@ -26,18 +23,6 @@ fn fragment(@location(0) uv: vec2<f32>) -> @location(0) vec4<f32> {
+ textureSample(trailMap, Sampler, uv + vec2<f32>(1, 0) / settings.size)
);
if (settings.isSwipeActive == 1.0) {
let pa = (uv - settings.swipePrevious) * normalize(settings.size);
let direction = (settings.swipeCurrent - settings.swipePrevious) * normalize(settings.size);
let q = clamp(dot(pa, direction) / dot(direction, direction), 0, 1);
let distance = length(pa - direction * q) - settings.swipeRadius;
if(distance < 0) {
let opacity = -distance / settings.swipeBlur;
return clamp(vec4(1), current, vec4(1));
}
}
return mix(
current,
neighbours / 4.0,