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wayland: Don't check for hi-dpi on monitors with broken EDID

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If the monitor reports a width/height that looks suspiciously like an
aspect ratio (16/9 or 16/10) don't check for hi-dpi. We can assume that
makers of devices that do support hi-dpi aren't so careless.

See http://cgit.freedesktop.org/~daniels/xserver/commit/?h=lodpi

https://bugzilla.gnome.org/show_bug.cgi?id=734839
This commit is contained in:
Bastien Nocera 2014-10-30 17:36:26 +01:00
parent 63e31af476
commit 13b6bd20ca
1 changed files with 8 additions and 0 deletions
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8
src/wayland/meta-wayland-outputs.c
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@ -75,6 +75,14 @@ compute_scale (MetaOutput *output)
output->crtc->rect.width >= SMALLEST_4K_WIDTH) output->crtc->rect.width >= SMALLEST_4K_WIDTH)
goto out; goto out;
/* Somebody encoded the aspect ratio (16/9 or 16/10)
* instead of the physical size */
if ((output->width_mm == 160 && output->height_mm == 90) ||
(output->width_mm == 160 && output->height_mm == 100) ||
(output->width_mm == 16 && output->height_mm == 9) ||
(output->width_mm == 16 && output->height_mm == 10))
goto out;
if (output->width_mm > 0 && output->height_mm > 0) if (output->width_mm > 0 && output->height_mm > 0)
{ {
double dpi_x, dpi_y; double dpi_x, dpi_y;