Marisa Kirisame
595159703c
- Added Paint filter. - Tweaked order of shaders. - Allow more grain parameters to be configured.
33 lines
1.3 KiB
GLSL
33 lines
1.3 KiB
GLSL
/*
|
|
Paint filter from MariENB (second pass median smoothing)
|
|
(C)2012-2021 Marisa Kirisame
|
|
*/
|
|
#define luminance(x) dot(x,vec3(0.2126,0.7152,0.0722))
|
|
|
|
void main()
|
|
{
|
|
vec2 coord = TexCoord;
|
|
vec4 res = vec4(1.);
|
|
vec2 bresl = textureSize(InputTexture,0);
|
|
vec2 bof = 1./bresl;
|
|
vec3 m1, m2, m3;
|
|
vec3 a, b, c;
|
|
a = texture(InputTexture,coord+vec2(-1,-1)*bof).rgb;
|
|
b = texture(InputTexture,coord+vec2( 0,-1)*bof).rgb;
|
|
c = texture(InputTexture,coord+vec2( 1,-1)*bof).rgb;
|
|
m1 = (luminance(a)<luminance(b))?((luminance(b)<luminance(c))?b
|
|
:max(a,c)):((luminance(a)<luminance(c))?a:max(b,c));
|
|
a = texture(InputTexture,coord+vec2(-1, 0)*bof).rgb;
|
|
b = texture(InputTexture,coord+vec2( 0, 0)*bof).rgb;
|
|
c = texture(InputTexture,coord+vec2( 1, 0)*bof).rgb;
|
|
m2 = (luminance(a)<luminance(b))?((luminance(b)<luminance(c))?b
|
|
:max(a,c)):((luminance(a)<luminance(c))?a:max(b,c));
|
|
a = texture(InputTexture,coord+vec2(-1, 1)*bof).rgb;
|
|
b = texture(InputTexture,coord+vec2( 0, 1)*bof).rgb;
|
|
c = texture(InputTexture,coord+vec2( 1, 1)*bof).rgb;
|
|
m3 = (luminance(a)<luminance(b))?((luminance(b)<luminance(c))?b
|
|
:max(a,c)):((luminance(a)<luminance(c))?a:max(b,c));
|
|
res.rgb = (luminance(m1)<luminance(m2))?((luminance(m2)<luminance(m3))
|
|
?m2:max(m1,m3)):((luminance(m1)<luminance(m3))?m1:max(m2,m3));
|
|
FragColor = res;
|
|
}
|