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liberty-xui: circumvent an Nvidia issue
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Přemysl Eric Janouch
2025-11-29 00:15:24 +01:00
parent 7566f9af82
commit c0eda1c23f
1 changed files with 10 additions and 3 deletions
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liberty-xui.c
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@@ -1269,14 +1269,21 @@ x11_render_label (struct widget *self)
XRenderColor solid = *x11_fg (self), colors[3] = { solid, solid, solid };
colors[2].alpha = 0;
double portion = MIN (1, 2.0 * font->list->font->height / space);
// Nvidia's XRender appears to not add (x, y) to (srcx, srcy),
// and works correctly if we pass self->x as srcx further on.
//
// Instead of special-casing nvidia_drv.so, let's have the gradient
// also extend to the left, in order to make text legible at all.
//
// We could also detect the behaviour experimentally in run-time.
double portion = MIN (1, 2. * font->list->font->height / (self->x + space));
XFixed stops[3] = { 0, XDoubleToFixed (1 - portion), XDoubleToFixed (1) };
XLinearGradient gradient = { {}, { XDoubleToFixed (space), 0 } };
XLinearGradient gradient = { {}, { XDoubleToFixed (self->x + space), 0 } };
// Note that this masking is a very expensive operation.
Picture source =
XRenderCreateLinearGradient (g_xui.dpy, &gradient, stops, colors, 3);
x11_font_render (font, PictOpOver, source, -self->x, 0, self->x, self->y,
x11_font_render (font, PictOpOver, source, 0, 0, self->x, self->y,
self->text);
XRenderFreePicture (g_xui.dpy, source);
}