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glsl: use float literals

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This commit is contained in:
Elias Aebi 2019-07-06 14:42:08 +02:00
parent 6455a54f6c
commit 1e6120e776
1 changed files with 16 additions and 16 deletions
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32
gsk/resources/glsl/blend.fs.glsl
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@ -4,14 +4,14 @@ uniform sampler2D u_source2;
float
combine (float source, float backdrop)
{
return source + backdrop * (1 - source);
return source + backdrop * (1.0 - source);
}
vec4
composite (vec4 Cs, vec4 Cb, vec3 B)
{
float ao = Cs.a + Cb.a * (1 - Cs.a);
vec3 Co = (Cs.a*(1 - Cb.a)*Cs.rgb + Cs.a*Cb.a*B + (1 - Cs.a)*Cb.a*Cb.rgb) / ao;
float ao = Cs.a + Cb.a * (1.0 - Cs.a);
vec3 Co = (Cs.a*(1.0 - Cb.a)*Cs.rgb + Cs.a*Cb.a*B + (1.0 - Cs.a)*Cb.a*Cb.rgb) / ao;
return vec4(Co, ao);
}
@ -43,9 +43,9 @@ float
hard_light (float source, float backdrop)
{
if (source <= 0.5)
return 2 * backdrop * source;
return 2.0 * backdrop * source;
else
return 2 * (backdrop + source - backdrop * source) - 1;
return 2.0 * (backdrop + source - backdrop * source) - 1.0;
}
vec4
@ -63,14 +63,14 @@ soft_light (float source, float backdrop)
float db;
if (backdrop <= 0.25)
db = ((16 * backdrop - 12) * backdrop + 4) * backdrop;
db = ((16.0 * backdrop - 12.0) * backdrop + 4.0) * backdrop;
else
db = sqrt (backdrop);
if (source <= 0.5)
return backdrop - (1 - 2 * source) * backdrop * (1 - backdrop);
return backdrop - (1.0 - 2.0 * source) * backdrop * (1.0 - backdrop);
else
return backdrop + (2 * source - 1) * (db - backdrop);
return backdrop + (2.0 * source - 1.0) * (db - backdrop);
}
vec4
@ -155,8 +155,8 @@ clip_color (vec3 c)
float l = lum (c);
float n = min (c.r, min (c.g, c.b));
float x = max (c.r, max (c.g, c.b));
if (n < 0) c = l + (((c - l) * l) / (l - n));
if (x > 1) c = l + (((c - l) * (1 - l)) / (x - l));
if (n < 0.0) c = l + (((c - l) * l) / (l - n));
if (x > 1.0) c = l + (((c - l) * (1.0 - l)) / (x - l));
return c;
}
@ -189,12 +189,12 @@ set_sat (vec3 c, float s)
if (c.g == cmin)
{
res.b = ((c.b - cmin) * s) / (cmax - cmin);
res.g = 0;
res.g = 0.0;
}
else
{
res.g = ((c.g - cmin) * s) / (cmax - cmin);
res.b = 0;
res.b = 0.0;
}
res.r = s;
}
@ -203,12 +203,12 @@ set_sat (vec3 c, float s)
if (c.r == cmin)
{
res.b = ((c.b - cmin) * s) / (cmax - cmin);
res.r = 0;
res.r = 0.0;
}
else
{
res.r = ((c.r - cmin) * s) / (cmax - cmin);
res.b = 0;
res.b = 0.0;
}
res.g = s;
}
@ -217,12 +217,12 @@ set_sat (vec3 c, float s)
if (c.r == cmin)
{
res.g = ((c.g - cmin) * s) / (cmax - cmin);
res.r = 0;
res.r = 0.0;
}
else
{
res.r = ((c.r - cmin) * s) / (cmax - cmin);
res.g = 0;
res.g = 0.0;
}
res.b = s;
}