@threlte/extras/dist/components/Sparkles/fragment.js

Utilities, abstractions and plugins for your Threlte apps

export default `
varying vec3 vColor;
varying float vOpacity;

void main() {
  float distanceToCenter = distance(gl_PointCoord, vec2(0.5));
  float strength = 0.03 / distanceToCenter - 0.1;
  float opacity = min(strength * vOpacity, 1.0);

  if (opacity < 0.1) {
    discard;
  }

  gl_FragColor = vec4(vColor, opacity);
}`;