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// -*- mode:c -*-
precision lowp float;
varying vec2 v_texcoord;
uniform sampler2D tex;
float distanceSquared(vec3 pixColor, vec3 solarizedColor) {
vec3 distanceVector = pixColor - solarizedColor;
return dot(distanceVector, distanceVector);
}
void main() {
vec3 solarized[16];
solarized[0] = vec3(0.,0.169,0.212);
solarized[1] = vec3(0.027,0.212,0.259);
solarized[2] = vec3(0.345,0.431,0.459);
solarized[3] = vec3(0.396,0.482,0.514);
solarized[4] = vec3(0.514,0.58,0.588);
solarized[5] = vec3(0.576,0.631,0.631);
solarized[6] = vec3(0.933,0.91,0.835);
solarized[7] = vec3(0.992,0.965,0.89);
solarized[8] = vec3(0.71,0.537,0.);
solarized[9] = vec3(0.796,0.294,0.086);
solarized[10] = vec3(0.863,0.196,0.184);
solarized[11] = vec3(0.827,0.212,0.51);
solarized[12] = vec3(0.424,0.443,0.769);
solarized[13] = vec3(0.149,0.545,0.824);
solarized[14] = vec3(0.165,0.631,0.596);
solarized[15] = vec3(0.522,0.6,0.);
vec3 pixColor = vec3(texture2D(tex, v_texcoord));
int closest = 0;
float closestDistanceSquared = distanceSquared(pixColor, solarized[0]);
for (int i = 1; i < 15; i++) {
float newDistanceSquared = distanceSquared(pixColor, solarized[i]);
if (newDistanceSquared < closestDistanceSquared) {
closest = i;
closestDistanceSquared = newDistanceSquared;
}
}
gl_FragColor = vec4(solarized[closest], 1.);
}
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