mpv-conf/shaders/minblur-usm.glsl

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2021-12-03 20:50:08 +08:00
//!DESC MinBlur-USM
//!HOOK LUMA
//!BIND HOOKED
#define CMPSWAP(i, j) if (a[i] > a[j]) {\
float t = a[i];\
a[i] = a[j];\
a[j] = t;\
}
float remove_grain_20() {
float r = 0.;
r += HOOKED_texOff(vec2(-1, -1)).x;
r += HOOKED_texOff(vec2(+0, -1)).x;
r += HOOKED_texOff(vec2(+1, -1)).x;
r += HOOKED_texOff(vec2(-1, +0)).x;
r += HOOKED_texOff(vec2(+0, +0)).x;
r += HOOKED_texOff(vec2(+1, +0)).x;
r += HOOKED_texOff(vec2(-1, +1)).x;
r += HOOKED_texOff(vec2(+0, +1)).x;
r += HOOKED_texOff(vec2(+1, +1)).x;
r /= 9;
return r;
}
float remove_grain_11() {
float r = 0.;
r += HOOKED_texOff(vec2(-1, -1)).x * 1.;
r += HOOKED_texOff(vec2(+0, -1)).x * 2.;
r += HOOKED_texOff(vec2(+1, -1)).x * 1.;
r += HOOKED_texOff(vec2(-1, +0)).x * 2.;
r += HOOKED_texOff(vec2(+0, +0)).x * 4.;
r += HOOKED_texOff(vec2(+1, +0)).x * 2.;
r += HOOKED_texOff(vec2(-1, +1)).x * 1.;
r += HOOKED_texOff(vec2(+0, +1)).x * 2.;
r += HOOKED_texOff(vec2(+1, +1)).x * 1.;
r /= 16;
return r;
}
float remove_grain_4() {
float a[9];
a[0] = HOOKED_texOff(vec2(-1, -1)).x;
a[1] = HOOKED_texOff(vec2(+0, -1)).x;
a[2] = HOOKED_texOff(vec2(+1, -1)).x;
a[3] = HOOKED_texOff(vec2(-1, +0)).x;
a[4] = HOOKED_texOff(vec2(+0, +0)).x;
a[5] = HOOKED_texOff(vec2(+1, +0)).x;
a[6] = HOOKED_texOff(vec2(-1, +1)).x;
a[7] = HOOKED_texOff(vec2(+0, +1)).x;
a[8] = HOOKED_texOff(vec2(+1, +1)).x;
CMPSWAP(0, 1); CMPSWAP(2, 3); CMPSWAP(4, 5); CMPSWAP(7, 8);
CMPSWAP(0, 2); CMPSWAP(1, 3); CMPSWAP(6, 8);
CMPSWAP(1, 2); CMPSWAP(6, 7); CMPSWAP(5, 8);
CMPSWAP(4, 7); CMPSWAP(3, 8);
CMPSWAP(4, 6); CMPSWAP(5, 7);
CMPSWAP(5, 6); CMPSWAP(2, 7);
CMPSWAP(0, 5); CMPSWAP(1, 6); CMPSWAP(3, 7);
CMPSWAP(0, 4); CMPSWAP(1, 5); CMPSWAP(3, 6);
CMPSWAP(1, 4); CMPSWAP(2, 5);
CMPSWAP(2, 4); CMPSWAP(3, 5);
CMPSWAP(3, 4);
return a[4];
}
vec4 hook() {
float src = HOOKED_tex(HOOKED_pos).x;
float rg11 = remove_grain_11();
float rg4 = remove_grain_4();
float min_blur = (src - rg11) * (src - rg4) < 0 ? src : abs(src - rg11) < abs(src - rg4) ? rg11 : rg4;
return vec4(src + src - min_blur, 0, 0, 0);
}