87 lines
2.9 KiB
Diff
87 lines
2.9 KiB
Diff
From 5f7f27d1198ef425f4943cc10132509415bbaf55 Mon Sep 17 00:00:00 2001
|
|
From: Michael Chang <mchang@suse.com>
|
|
Date: Thu, 24 Jan 2019 16:41:04 +0800
|
|
Subject: [PATCH] video: limit the resolution for fixed bimap font
|
|
|
|
As grub uses fixed bitmap font and also its size is a fixed property, it is not
|
|
possible to accommodate to all resolutions, therefore we raise some limit to
|
|
the preferred resolution as most themes are designed on popular device and the
|
|
resolution in its prime, which is supposedly Full HD.
|
|
|
|
This change also makes grub font readable on hiDPI device without going through
|
|
the steps in.
|
|
|
|
https://wiki.archlinux.org/index.php/HiDPI#GRUB
|
|
|
|
v2: efi_gop: Avoid high resolution when trying to keep current mode.
|
|
|
|
---
|
|
grub-core/video/efi_gop.c | 7 +++++++
|
|
grub-core/video/i386/pc/vbe.c | 8 +++++++-
|
|
2 files changed, 14 insertions(+), 1 deletion(-)
|
|
|
|
--- a/grub-core/video/efi_gop.c
|
|
+++ b/grub-core/video/efi_gop.c
|
|
@@ -358,7 +358,7 @@
|
|
grub_err_t err;
|
|
unsigned bpp;
|
|
int found = 0;
|
|
- int avoid_low_resolution = 1;
|
|
+ int avoid_extreme_resolution = 1;
|
|
unsigned long long best_volume = 0;
|
|
unsigned int preferred_width = 0, preferred_height = 0;
|
|
grub_uint8_t *buffer;
|
|
@@ -375,13 +375,21 @@
|
|
preferred_height = 600;
|
|
grub_errno = GRUB_ERR_NONE;
|
|
}
|
|
+ else
|
|
+ {
|
|
+ /* Limit the range of preferred resolution not exceeding FHD
|
|
+ to keep the fixed bitmap font readable */
|
|
+ preferred_width = (preferred_width < 1920) ? preferred_width : 1920;
|
|
+ preferred_height = (preferred_height < 1080) ? preferred_height : 1080;
|
|
+ }
|
|
}
|
|
|
|
again:
|
|
/* Keep current mode if possible. */
|
|
if (gop->mode->info &&
|
|
- (!avoid_low_resolution ||
|
|
- (gop->mode->info->width >= 800 && gop->mode->info->height >= 600)))
|
|
+ (!avoid_extreme_resolution ||
|
|
+ ((gop->mode->info->width >= 800 && gop->mode->info->height >= 600) &&
|
|
+ (gop->mode->info->width <= 1920 && gop->mode->info->height <= 1080))))
|
|
{
|
|
bpp = grub_video_gop_get_bpp (gop->mode->info);
|
|
if (bpp && ((width == gop->mode->info->width
|
|
@@ -454,9 +462,9 @@
|
|
|
|
if (!found)
|
|
{
|
|
- if (avoid_low_resolution && gop->mode->info)
|
|
+ if (avoid_extreme_resolution && gop->mode->info)
|
|
{
|
|
- avoid_low_resolution = 0;
|
|
+ avoid_extreme_resolution = 0;
|
|
goto again;
|
|
}
|
|
grub_dprintf ("video", "GOP: no mode found\n");
|
|
--- a/grub-core/video/i386/pc/vbe.c
|
|
+++ b/grub-core/video/i386/pc/vbe.c
|
|
@@ -994,7 +994,13 @@
|
|
{
|
|
grub_vbe_get_preferred_mode (&width, &height);
|
|
if (grub_errno == GRUB_ERR_NONE)
|
|
- preferred_mode = 1;
|
|
+ {
|
|
+ preferred_mode = 1;
|
|
+ /* Limit the range of preferred resolution not exceeding FHD
|
|
+ to keep the fixed bitmap font readable */
|
|
+ width = (width < 1920) ? width : 1920;
|
|
+ height = (height < 1080) ? height : 1080;
|
|
+ }
|
|
else
|
|
{
|
|
/* Fall back to 640x480. This is conservative, but the largest
|