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- change 'halfstep' in the dither shader to a #define

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This commit is contained in:
Rachael Alexanderson 2018-08-07 17:06:05 -04:00
parent 1cfed9de45
commit 07c9db682d
1 changed files with 17 additions and 17 deletions
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34
wadsrc/static/shaders/glsl/present.fp
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@ -17,24 +17,24 @@ vec4 ApplyGamma(vec4 c)
return vec4(val, c.a);
}
float halfstep = 1./65.;
#define HALFSTEP 1./65.
float DitherMatrix[64] = float[](
0.0 / 16.0 + halfstep * 1, 8.0 / 16.0 + halfstep * 1, 2.0 / 16.0 + halfstep * 1, 10.0 / 16.0 + halfstep * 1,
0.0 / 16.0 + halfstep * 3, 8.0 / 16.0 + halfstep * 3, 2.0 / 16.0 + halfstep * 3, 10.0 / 16.0 + halfstep * 3,
12.0 / 16.0 + halfstep * 1, 4.0 / 16.0 + halfstep * 1, 14.0 / 16.0 + halfstep * 1, 6.0 / 16.0 + halfstep * 1,
12.0 / 16.0 + halfstep * 3, 4.0 / 16.0 + halfstep * 3, 14.0 / 16.0 + halfstep * 3, 6.0 / 16.0 + halfstep * 3,
3.0 / 16.0 + halfstep * 1, 11.0 / 16.0 + halfstep * 1, 1.0 / 16.0 + halfstep * 1, 9.0 / 16.0 + halfstep * 1,
3.0 / 16.0 + halfstep * 3, 11.0 / 16.0 + halfstep * 3, 1.0 / 16.0 + halfstep * 3, 9.0 / 16.0 + halfstep * 3,
15.0 / 16.0 + halfstep * 1, 7.0 / 16.0 + halfstep * 1, 13.0 / 16.0 + halfstep * 1, 5.0 / 16.0 + halfstep * 1,
15.0 / 16.0 + halfstep * 3, 7.0 / 16.0 + halfstep * 3, 13.0 / 16.0 + halfstep * 3, 5.0 / 16.0 + halfstep * 3,
0.0 / 16.0 + halfstep * 4, 8.0 / 16.0 + halfstep * 4, 2.0 / 16.0 + halfstep * 4, 10.0 / 16.0 + halfstep * 4,
0.0 / 16.0 + halfstep * 2, 8.0 / 16.0 + halfstep * 2, 2.0 / 16.0 + halfstep * 2, 10.0 / 16.0 + halfstep * 2,
12.0 / 16.0 + halfstep * 4, 4.0 / 16.0 + halfstep * 4, 14.0 / 16.0 + halfstep * 4, 6.0 / 16.0 + halfstep * 4,
12.0 / 16.0 + halfstep * 2, 4.0 / 16.0 + halfstep * 2, 14.0 / 16.0 + halfstep * 2, 6.0 / 16.0 + halfstep * 2,
3.0 / 16.0 + halfstep * 4, 11.0 / 16.0 + halfstep * 4, 1.0 / 16.0 + halfstep * 4, 9.0 / 16.0 + halfstep * 4,
3.0 / 16.0 + halfstep * 2, 11.0 / 16.0 + halfstep * 2, 1.0 / 16.0 + halfstep * 2, 9.0 / 16.0 + halfstep * 2,
15.0 / 16.0 + halfstep * 4, 7.0 / 16.0 + halfstep * 4, 13.0 / 16.0 + halfstep * 4, 5.0 / 16.0 + halfstep * 4,
15.0 / 16.0 + halfstep * 2, 7.0 / 16.0 + halfstep * 2, 13.0 / 16.0 + halfstep * 2, 5.0 / 16.0 + halfstep * 2
0.0 / 16.0 + HALFSTEP * 1, 8.0 / 16.0 + HALFSTEP * 1, 2.0 / 16.0 + HALFSTEP * 1, 10.0 / 16.0 + HALFSTEP * 1,
0.0 / 16.0 + HALFSTEP * 3, 8.0 / 16.0 + HALFSTEP * 3, 2.0 / 16.0 + HALFSTEP * 3, 10.0 / 16.0 + HALFSTEP * 3,
12.0 / 16.0 + HALFSTEP * 1, 4.0 / 16.0 + HALFSTEP * 1, 14.0 / 16.0 + HALFSTEP * 1, 6.0 / 16.0 + HALFSTEP * 1,
12.0 / 16.0 + HALFSTEP * 3, 4.0 / 16.0 + HALFSTEP * 3, 14.0 / 16.0 + HALFSTEP * 3, 6.0 / 16.0 + HALFSTEP * 3,
3.0 / 16.0 + HALFSTEP * 1, 11.0 / 16.0 + HALFSTEP * 1, 1.0 / 16.0 + HALFSTEP * 1, 9.0 / 16.0 + HALFSTEP * 1,
3.0 / 16.0 + HALFSTEP * 3, 11.0 / 16.0 + HALFSTEP * 3, 1.0 / 16.0 + HALFSTEP * 3, 9.0 / 16.0 + HALFSTEP * 3,
15.0 / 16.0 + HALFSTEP * 1, 7.0 / 16.0 + HALFSTEP * 1, 13.0 / 16.0 + HALFSTEP * 1, 5.0 / 16.0 + HALFSTEP * 1,
15.0 / 16.0 + HALFSTEP * 3, 7.0 / 16.0 + HALFSTEP * 3, 13.0 / 16.0 + HALFSTEP * 3, 5.0 / 16.0 + HALFSTEP * 3,
0.0 / 16.0 + HALFSTEP * 4, 8.0 / 16.0 + HALFSTEP * 4, 2.0 / 16.0 + HALFSTEP * 4, 10.0 / 16.0 + HALFSTEP * 4,
0.0 / 16.0 + HALFSTEP * 2, 8.0 / 16.0 + HALFSTEP * 2, 2.0 / 16.0 + HALFSTEP * 2, 10.0 / 16.0 + HALFSTEP * 2,
12.0 / 16.0 + HALFSTEP * 4, 4.0 / 16.0 + HALFSTEP * 4, 14.0 / 16.0 + HALFSTEP * 4, 6.0 / 16.0 + HALFSTEP * 4,
12.0 / 16.0 + HALFSTEP * 2, 4.0 / 16.0 + HALFSTEP * 2, 14.0 / 16.0 + HALFSTEP * 2, 6.0 / 16.0 + HALFSTEP * 2,
3.0 / 16.0 + HALFSTEP * 4, 11.0 / 16.0 + HALFSTEP * 4, 1.0 / 16.0 + HALFSTEP * 4, 9.0 / 16.0 + HALFSTEP * 4,
3.0 / 16.0 + HALFSTEP * 2, 11.0 / 16.0 + HALFSTEP * 2, 1.0 / 16.0 + HALFSTEP * 2, 9.0 / 16.0 + HALFSTEP * 2,
15.0 / 16.0 + HALFSTEP * 4, 7.0 / 16.0 + HALFSTEP * 4, 13.0 / 16.0 + HALFSTEP * 4, 5.0 / 16.0 + HALFSTEP * 4,
15.0 / 16.0 + HALFSTEP * 2, 7.0 / 16.0 + HALFSTEP * 2, 13.0 / 16.0 + HALFSTEP * 2, 5.0 / 16.0 + HALFSTEP * 2
);
vec4 Dither(vec4 c, float colorscale)