0d14e5a379
Needs a lot of cleanup. Data has been de-duplicated, and where identical copies existed, one of them has been replaced with a symlink. Some files have been excluded, such as binaries, installers and debug dumps. Some of that may still be present.
48 lines
1.4 KiB
GLSL
48 lines
1.4 KiB
GLSL
//Calculate the squared length of a vector
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float length2(vec2 p){
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return dot(p,p);
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}
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//Generate some noise to scatter points.
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float noise(vec2 p){
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return fract(sin(fract(sin(p.x) * (43.13311)) + p.y) * 31.0011);
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}
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float worley(vec2 p) {
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//Set our distance to infinity
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float d = 1e30;
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//For the 9 surrounding grid points
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for (int xo = -1; xo <= 1; ++xo) {
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for (int yo = -1; yo <= 1; ++yo) {
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//Floor our vec2 and add an offset to create our point
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vec2 tp = floor(p) + vec2(xo, yo);
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//Calculate the minimum distance for this grid point
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//Mix in the noise value too!
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d = min(d, length2(p - tp - noise(tp)));
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}
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}
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return 3.0*exp(-4.0*abs(2.5*d - 1.0));
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}
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float fworley(vec2 p) {
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//Stack noise layers
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return sqrt(sqrt(sqrt(
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worley(p*5.0 + 0.05*iGlobalTime) *
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sqrt(worley(p * 50.0 + 0.12 + -0.1*iGlobalTime)) *
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sqrt(sqrt(worley(p * -10.0 + 0.03*iGlobalTime))))));
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}
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void mainImage( out vec4 fragColor, in vec2 fragCoord )
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{
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vec2 uv = fragCoord.xy / iResolution.xy;
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//Calculate an intensity
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float t = fworley(uv * iResolution.xy / 1500.0);
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//Add some gradient
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t*=exp(-length2(abs(0.7*uv - 1.0)));
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//Make it blue!
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fragColor = vec4(t * vec3(0.8, 0.7*t, 0.6*t), 1.0);
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}
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//194, 178, 128
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//tpow(t, 0.5-t))
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