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is more reactive

This commit is contained in:
Jakob 2023-07-01 00:58:12 +02:00
parent eb9b0be732
commit ac702663e8
1 changed files with 5 additions and 29 deletions
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34
src/2023-06-21.festl_is/main.frag
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@ -57,26 +57,6 @@ vec3 ditherBayerLut(vec3 ref) {
}
#include "../../lib/lygia/sample/dither.glsl"
//custom helpers -- TODO check if lygia can do this?
// https://gist.github.com/983/e170a24ae8eba2cd174f
vec3 rgb2hsv(vec3 c)
{
vec4 K = vec4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
vec4 p = mix(vec4(c.bg, K.wz), vec4(c.gb, K.xy), step(c.b, c.g));
vec4 q = mix(vec4(p.xyw, c.r), vec4(c.r, p.yzx), step(p.x, c.r));
float d = q.x - min(q.w, q.y);
float e = 1.0e-10;
return vec3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);
}
vec3 hsv2rgb(vec3 c)
{
vec4 K = vec4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
vec3 p = abs(fract(c.xxx + K.xyz) * 6.0 - K.www);
return c.z * mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);
}
void main() {
// common setup
@ -93,23 +73,19 @@ void main() {
float fx_dither_amount = .0;
color = lerp(color, fx_dither, fx_dither_amount);
// effect: chromatic aberration
//vec4 fx_chroma = chromaAB(u_tex0, uv);
//float fx_chroma_amount = osc_sin*0.9;
//color = lerp(color, fx_chroma, fx_chroma_amount);
// effect: exposure
float exposure_val = map(osc_beat_val, 0.0, 1.0, 0.0, 1.6);
exposure_val = saturate(exposure_val + osc_fft1*1.5);
exposure_val = saturate(exposure_val + osc_fft1*1.8);
color = exposure(color,exposure_val);
float par_noise = pnoise(vec3(st * 5., u_time/6.0+osc_beat_val), vec3(1.2, 3.4, 5.6)) * 0.5 + 0.5;
// make some noise
float par_noise = pnoise(vec3(st * 5., u_time/6.0+osc_beat_val*0.5+osc_fft2*0.5), vec3(1.2, 3.4, 5.6)) * 0.5 + 0.5;
float par_noise2 = pnoise(vec3(st * 5., (u_time+1000.0)/5.0+osc_beat_val), vec3(1.2, 3.4, 5.6)) * 0.5 + 0.5;
if(par_noise < 0.75*osc_slider3) {
vec3 col_invert = vec3(1.0)-color.rbg;
color = fx_dither;
color.rgb = lerp(fx_dither.rgb,col_invert,sin((u_time/60.0)+osc_fft2)*.5+.5);
color.rgb = lerp(fx_dither.rgb,col_invert,sin((u_time/60.0)+0.0)*.5+.5);
if(par_noise2 < 0.5) {
color.rgb = lerp(fx_dither.rgb,col_invert,1.0-sin((u_time/60.0)+osc_fft2)*.5+.5);
}