Shader test bench

Lava Lamp Cells

stronghold-curated plasma glsl runnable fragment MIT

runnable fragment

Complete GLSL fragment shader. Stronghold runs it directly when the browser can compile it.

Code

precision mediump float;
uniform vec2 resolution;
uniform float time;
void main(){
  vec2 uv=(gl_FragCoord.xy*2.0-resolution.xy)/min(resolution.x,resolution.y);
  float field=0.0;
  for(int i=0;i<7;i++){
    float fi=float(i);
    vec2 c=vec2(sin(time*(0.25+fi*0.04)+fi*1.8), cos(time*(0.31+fi*0.03)+fi*2.4))*0.62;
    field += (0.05+0.015*sin(time+fi))/max(0.015, dot(uv-c,uv-c));
  }
  float lava=smoothstep(0.8,2.2,field);
  vec3 col=mix(vec3(0.04,0.0,0.02), vec3(1.0,0.18,0.02), lava);
  col += vec3(1.0,0.75,0.12)*smoothstep(2.6,5.0,field);
  gl_FragColor=vec4(col,1.0);
}

Code

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