publish: Add noise

generated from commit 251cec931d4bd49e402105964a8b2d087f1ebd87
This commit is contained in:
Joshua Seigler 2019-11-05 14:40:56 -05:00
parent 31b6727b5d
commit f2393d2fe7
6 changed files with 19 additions and 2 deletions

17
shaders/white-noise.frag Normal file
View file

@ -0,0 +1,17 @@
precision mediump float;
uniform vec2 u_resolution;
float random (vec2 st) {
return fract(sin(dot(st.xy,
vec2(12.9898,78.233)))*
43758.5453123);
}
void main() {
vec2 st = gl_FragCoord.xy/u_resolution.xy;
float rnd = random( st );
gl_FragColor = vec4(vec3(rnd),0.05);
}