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dither on lighting and blurring, with an option to turn them off

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minjaesong
2021-10-09 20:34:53 +09:00
parent d4f75c1bd5
commit d28698b668
10 changed files with 1000 additions and 36 deletions
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21
assets/4096_bayer.frag
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@@ -282,6 +282,17 @@ vec4 quantiserDivider = vec4(1.0 / quant);
vec2 boolean = vec2(0.0, 1.0);
vec4 halfvec = vec4(0.5);
vec4 nearestColour(vec4 inColor) {
return floor(quantiser * inColor + halfvec) * quantiserDivider;
}
vec4 getDitherredDot(vec4 inColor) {
vec2 entry = mod(gl_FragCoord.xy, vec2(bayerSize, bayerSize));
int index = int(entry.y) * int(bayerSize) + int(entry.x);
vec4 bayerThreshold = vec4(bayerTex[index] / bayerDivider - 0.5);
return nearestColour(inColor + bayerThreshold * quantiserDivider);
}
vec4 gammaIn(vec4 col) {
return pow(col, vec4(2.2));
}
@@ -290,18 +301,10 @@ vec4 gammaOut(vec4 col) {
return pow(col, vec4(1.0 / 2.2));
}
vec4 nearestColour(vec4 inColor) {
return floor(quantiser * inColor + halfvec) * quantiserDivider;
}
void main(void) {
// create texture coordinates based on pixelSize //
vec4 inColor = v_color * (texture2D(u_texture, v_texCoords));
vec2 entry = mod(gl_FragCoord.xy, vec2(bayerSize, bayerSize));
int index = int(entry.y) * int(bayerSize) + int(entry.x);
vec4 bayerThreshold = vec4(bayerTex[index] / bayerDivider - 0.5);
vec4 selvec = nearestColour(inColor + bayerThreshold * quantiserDivider);
vec4 selvec = getDitherredDot(inColor);
gl_FragColor = selvec * boolean.yyyx + inColor * boolean.xxxy; // use quantised RGB but not the A
}