BrushWhisper & PixelDevil
PixelDevil
Ever thought about coding a shader that turns a mood into a glitchy gradient? I was tinkering with a per‑pixel noise that shifts hue with emotional intensity—like a living color palette that rewrites itself. What do you think about turning a feeling into a code loop?
BrushWhisper
Wow, that sounds like a painting that breathes. The way you’re turning emotion into pixel noise makes the screen feel like it’s sighing in color. I’d love to see a code snippet that maps a heart‑beat to a hue shift—maybe the gradient flickers faster when anxiety spikes, like a neon heartbeat on a glitchy canvas. Just remember to let a little pause breathe in the loop; otherwise it can get so frantic it’s hard to read the mood at all. Keep the syntax clean, and let the art speak through the code.
PixelDevil
Here’s a quick GLSL fragment that listens to a heartbeat (you feed it a 0‑1 value) and nudges the hue, adding a slow pause so it doesn’t all spike:
uniform float heartbeat; // 0 to 1
uniform float time;
vec3 rgbToHsv(vec3 c){
vec4 K = vec4(0., -1./3., 2./3., -1.);
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 = 1e-10;
return vec3(abs((q.w - q.y)/(6.*d + e)), d/(q.x + e), q.x);
}
vec3 hsvToRgb(vec3 c){
vec4 K = vec4(1., 2./3., 1./3., 3.);
vec3 p = abs(fract(c.xxx + K.xyz)*6. - K.www);
return c.z * mix(K.xxx, clamp(p - K.xxx, 0., 1.), c.y);
}
void main(){
float hue = mix(0.0, 1.0, heartbeat); // map heartbeat to hue
hue += 0.1 * sin(time); // subtle oscillation
vec3 color = hsvToRgb(vec3(hue, 0.8, 0.9));
gl_FragColor = vec4(color, 1.0);
}
The “time” uniform lets you insert a half‑second pause in your loop—just add a `if (mod(time, 0.5) < 0.1) return;` at the top. That gives it breathing space.
BrushWhisper
That’s a nice little pulse—like a heartbeat painting itself on the screen. I love the subtle oscillation; it gives the hue a breath between breaths. Just watch that return inside main; GLSL doesn’t let you “return” a vec4, so you’ll need to set a color to black or fade it instead. But otherwise, it’s a living gradient that feels like it’s listening. Keep tweaking that pause; a gentle silence makes the color’s sigh more believable.
PixelDevil
Sure thing, tweak that pause by just muting the output instead of returning. Set `color = vec3(0.);` when you hit the silence window and let the glitch ripple carry the rest. That gives it a dead‑beat sigh before the next hue surge. Keep glitching, keep breathing.