A simple ASCII post-processing effect in GLSL, original here by @movAX13h.
#pragma glslify: asciiFilter = require('glsl-ascii-filter')
void main() {
vec4 color = texture2D(u_sampler, uv);
//aspect-corrected screen UVs
vec2 st = uv;
st.x *= iResolution.x / iResolution.y;
//apply filter
gl_FragColor.rgb = color.rgb * asciiFilter(color.rgb, uv);
gl_FragColor.a = color.a;
}Best rendered with retina scaling for crisp edges.
Applies an ASCII-like filter to the given pixel color based on the current screen uv texcoords. The pixelSize (defaults to 0.04) can be used to scale the characters.
MIT, see LICENSE.md for details.
