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//go:build ignore
//kage:unit pixels
package main
var Time float
var NoiseOffset float
const noiseX = 840.0
const noiseY = 840.0
const speed = 0.01
const colorOffsetIntensity = 0.1
func rand(co vec2) float {
return fract(sin(dot(co.xy, vec2(12.9898,78.233))) * 43758.5453)
}
func Fragment(dstPos vec4, srcPos vec2, color vec4) vec4 {
time := Time * speed
uv := srcPos / imageSrc0Size()
uv.x = uv.x + (rand(vec2(time,srcPos.y)) - 0.5) / (noiseX);
uv.y = uv.y + (rand(vec2(time))-0.5) / (noiseY)
offsetR := vec2(0.006 * sin(time), 0.0) * colorOffsetIntensity
offsetG := vec2(0.0073 * (cos(time * 0.97)), 0.0) * colorOffsetIntensity
r := imageSrc0UnsafeAt((uv+offsetR) * imageSrc0Size()).r
g := imageSrc0UnsafeAt((uv+offsetG) * imageSrc0Size()).g
b := imageSrc0UnsafeAt(uv * imageSrc0Size()).b
return vec4(r, g, b, 1.0)
}
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