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Merge branch 'wip/otte/for-main' into 'main'

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gpu: Fix shadows some more

Closes #6896

See merge request GNOME/gtk!7526
This commit is contained in:
Benjamin Otte 2024-07-30 14:48:34 +00:00
commit 65e02a3bae
1 changed files with 9 additions and 2 deletions
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11
gsk/gpu/shaders/gskgpuboxshadow.glsl
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@ -113,15 +113,22 @@ blur_corner (vec2 p,
p /= _sigma;
r /= _sigma;
if (min (p.x, p.y) <= -2.95 ||
max (p.x, p.y) >= 2.95)
return 0.0;
float result = 0.0;
float start = max (p.y - 3.0, 0.0);
float end = min (p.y + 3.0, r.y);
float step = (end - start) / 7.0;
for (float y = start; y <= end; y += step)
float y = start;
for (int i = 0; i < 8; i++)
{
float x = r.x - ellipse_x (r, r.y - y);
result -= gauss (p.y - y, 1.0) * erf_range (vec2 (- p.x, x - p.x), 1.0);
}
y += step;
}
return step * result;
}