OrdinaryMagician/marifx_m
OrdinaryMagician/marifx_m
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Various touchups in preparation for a first release.

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Marisa the Magician 2019-01-24 01:59:35 +01:00
commit 5c368503e5
20 changed files with 279 additions and 78 deletions
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34
shaders/glsl/mfx_grain.fp
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@ -1,15 +1,13 @@
/*
Complex grain shader ported over from MariENB
(C)2012-2018 Marisa Kirisame
(C)2012-2019 Marisa Kirisame
*/
const float nf = 0.000005;
const float nf = 0.0005;
const vec3 nm1 = vec3(2.05,3.11,2.22);
const float nk = 0.04;
const vec3 nm2 = vec3(4.25,9.42,6.29);
const float ns = -0.08;
const float np = 3.95;
const float bnp = 1.7;
#define overlay(a,b) (a<0.5)?(2.0*a*b):(1.0-(2.0*(1.0-a)*(1.0-b)))
#define darkmask(a,b) (a>0.5)?(2.0*a*(0.5+b)):(1.0-2.0*(1.0-a)*(1.0-((0.5+b))))
vec3 grain( in vec3 res, in vec2 coord )
@ -19,7 +17,9 @@ vec3 grain( in vec3 res, in vec2 coord )
vec2 s2 = coord+vec2(ts,0.0);
vec2 s3 = coord+vec2(ts,ts);
float n1, n2, n3;
vec2 nr = textureSize(NoiseTexture,0);
vec2 bresl = textureSize(InputTexture,0);
vec2 nr = vec2(7.5);
nr.y *= bresl.y/bresl.x;
n1 = texture(NoiseTexture,s1*nm1.x*nr).r;
n2 = texture(NoiseTexture,s2*nm1.y*nr).g;
n3 = texture(NoiseTexture,s3*nm1.z*nr).b;
@ -33,12 +33,22 @@ vec3 grain( in vec3 res, in vec2 coord )
vec3 ng = vec3(n4);
vec3 nc = vec3(n1,n2,n3);
vec3 nt = pow(clamp(mix(ng,nc,ns),0.0,1.0),vec3(np));
float bn = 1.0-clamp((res.r+res.g+res.b)/3.0,0.0,1.0);
bn = pow(bn,bnp);
vec3 nn = clamp(nt*bn,vec3(0.0),vec3(1.0));
res.r = darkmask(res.r,(nn.r*ni));
res.g = darkmask(res.g,(nn.g*ni));
res.b = darkmask(res.b,(nn.b*ni));
if ( nb == 0 ) res.rgb += nt*ni;
else if ( nb == 1 )
{
res.r = overlay(res.r,(nt.r*ni+0.5));
res.g = overlay(res.g,(nt.g*ni+0.5));
res.b = overlay(res.b,(nt.b*ni+0.5));
}
else
{
float bn = 1.0-clamp((res.r+res.g+res.b)/3.0,0.0,1.0);
bn = pow(bn,bnp);
vec3 nn = clamp(nt*bn,vec3(0.0),vec3(1.0));
res.r = darkmask(res.r,(nn.r*ni));
res.g = darkmask(res.g,(nn.g*ni));
res.b = darkmask(res.b,(nn.b*ni));
}
return res;
}