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#version 330 core
out vec4 FragColor;
in vec2 texCoord;
in float randOffset;
uniform sampler2D texture0;
uniform sampler2D texture1;
/* thank you internet i guess
* note: this has terrible distribution, not sure if i care */
float
rand(vec2 co){
return fract(sin(dot(co.xy ,vec2(12.9898,78.233))+randOffset) * 43758.5453);
}
void
main()
{
vec4 col = mix(texture(texture0, texCoord),
texture(texture1, texCoord), 0.2);
float gray = 0.2989 * col.r + 0.5870 * col.g + 0.1140 * col.b;
if (gray + rand(texCoord) - 0.5 < 0.5)
FragColor = vec4(vec3(0.0), 1.0);
else
FragColor = vec4(1.0);
}
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