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 PNG chunk issues on Ventoy theming but checked OK on Linux
#1
Ventoy version
1.0.70 (functioning normally other than theming; has to be downgraded which the most recent version for both official and CI channels doesn’t function but also reports ‘‘alloc magic broken’’ issues)
Hardware
System: Lenovo Z71-50 laptop
USB drive: 256GB SanDisk thumb drive USB 3.0
Reproductions
Make your own GRUB theme for Ventoy with your own png wallpaper(s) and/or avatar(s), then check if shown to you chunk size errors
Code:
artixlinux:[hd_scania]:/run/media/hd_scania/VTOYEFI/grub/themes/012_119$ pngcheck -v background.png && pngcheck -v logo.png
File: background.png (1666405 bytes)
No errors detected in background.png (210 chunks, 79.9% compression).
No errors detected in logo.png (36 chunks, 75.6% compression).
artixlinux:[hd_scania]:/run/media/hd_scania/VTOYEFI/grub/themes/012_119$ l
total 1899
-rw-r--r-- 1 hd_scania hd_scania 1666405 Jan 17 04:51 background.png
-rw-r--r-- 1 hd_scania hd_scania  254782 Jan 16 18:18 logo.png
drwxr-xr-x 2 hd_scania hd_scania    2560 Jan 17 04:51 .
-rw-r--r-- 1 hd_scania hd_scania    1678 Jan 16 20:06 theme.txt
-rw-r--r-- 1 hd_scania hd_scania    1115 Dec  4 07:16 terminal_box_ne.png
-rw-r--r-- 1 hd_scania hd_scania    1107 Dec  4 07:16 terminal_box_sw.png
-rw-r--r-- 1 hd_scania hd_scania    1102 Dec  4 07:16 terminal_box_se.png
-rw-r--r-- 1 hd_scania hd_scania    1094 Dec  4 07:16 terminal_box_nw.png
-rw-r--r-- 1 hd_scania hd_scania    976 Dec  4 07:16 terminal_box_c.png
-rw-r--r-- 1 hd_scania hd_scania    963 Dec  4 07:16 terminal_box_n.png
-rw-r--r-- 1 hd_scania hd_scania    963 Dec  4 07:16 terminal_box_s.png
-rw-r--r-- 1 hd_scania hd_scania    952 Dec  4 07:16 terminal_box_e.png
-rw-r--r-- 1 hd_scania hd_scania    952 Dec  4 07:16 terminal_box_w.png
drwxr-xr-x 3 hd_scania hd_scania    512 Jan 16 21:40 ..
-rw-r--r-- 1 hd_scania hd_scania    318 Dec  4 07:16 select_c.png
-rw-r--r-- 1 hd_scania hd_scania    190 Dec  4 07:16 slider_n.png
-rw-r--r-- 1 hd_scania hd_scania    184 Dec  4 07:16 slider_s.png
-rw-r--r-- 1 hd_scania hd_scania    181 Dec  4 07:16 menu_se.png
-rw-r--r-- 1 hd_scania hd_scania    181 Dec  4 07:16 menu_sw.png
-rw-r--r-- 1 hd_scania hd_scania    178 Dec  4 07:16 menu_ne.png
-rw-r--r-- 1 hd_scania hd_scania    178 Dec  4 07:16 menu_nw.png
-rw-r--r-- 1 hd_scania hd_scania    157 Dec  4 07:16 menu_n.png
-rw-r--r-- 1 hd_scania hd_scania    157 Dec  4 07:16 menu_s.png
-rw-r--r-- 1 hd_scania hd_scania    154 Dec  4 07:16 menu_e.png
-rw-r--r-- 1 hd_scania hd_scania    154 Dec  4 07:16 menu_w.png
-rw-r--r-- 1 hd_scania hd_scania    152 Dec  4 07:16 menu_c.png
-rw-r--r-- 1 hd_scania hd_scania      99 Dec  4 07:16 slider_c.png
artixlinux:[hd_scania]:/run/media/hd_scania/VTOYEFI/grub/themes/012_119$ pngcheck *.png
OK: background.png (1920x1080, 32-bit RGB+alpha, non-interlaced, 79.9%).
OK: logo.png (512x510, 32-bit RGB+alpha, non-interlaced, 75.6%).
OK: menu_c.png (4x4, 32-bit RGB+alpha, non-interlaced, -137.5%).
OK: menu_e.png (30x4, 32-bit RGB+alpha, non-interlaced, 67.9%).
OK: menu_ne.png (30x30, 32-bit RGB+alpha, non-interlaced, 95.1%).
OK: menu_n.png (4x30, 32-bit RGB+alpha, non-interlaced, 67.3%).
OK: menu_nw.png (30x30, 32-bit RGB+alpha, non-interlaced, 95.1%).
OK: menu_se.png (30x30, 32-bit RGB+alpha, non-interlaced, 95.0%).
OK: menu_s.png (4x30, 32-bit RGB+alpha, non-interlaced, 67.3%).
OK: menu_sw.png (30x30, 32-bit RGB+alpha, non-interlaced, 95.0%).
OK: menu_w.png (30x4, 32-bit RGB+alpha, non-interlaced, 67.9%).
OK: select_c.png (638x36, 32-bit RGB+alpha, non-interlaced, 99.7%).
OK: slider_c.png (20x4, 32-bit RGB+alpha, non-interlaced, 69.1%).
OK: slider_n.png (20x8, 32-bit RGB+alpha, non-interlaced, 70.3%).
OK: slider_s.png (20x8, 32-bit RGB+alpha, non-interlaced, 71.3%).
OK: terminal_box_c.png (64x34, 32-bit RGB+alpha, non-interlaced, 88.8%).
OK: terminal_box_e.png (16x34, 32-bit RGB+alpha, non-interlaced, 56.3%).
OK: terminal_box_ne.png (16x16, 32-bit RGB+alpha, non-interlaced, -8.9%).
OK: terminal_box_n.png (64x16, 32-bit RGB+alpha, non-interlaced, 76.5%).
OK: terminal_box_nw.png (16x16, 32-bit RGB+alpha, non-interlaced, -6.8%).
OK: terminal_box_se.png (16x16, 32-bit RGB+alpha, non-interlaced, -7.6%).
OK: terminal_box_s.png (64x16, 32-bit RGB+alpha, non-interlaced, 76.5%).
OK: terminal_box_sw.png (16x16, 32-bit RGB+alpha, non-interlaced, -8.1%).
OK: terminal_box_w.png (16x34, 32-bit RGB+alpha, non-interlaced, 56.3%).

No errors were detected in 24 of the 24 files tested.
artixlinux:[hd_scania]:/run/media/hd_scania/VTOYEFI/grub/themes/012_119$
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#2
Ventoy use official grub theme, so you can report to official grub community.
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