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boot: Fall back to 24bpp modes

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This commit is contained in:
K. Lange 2021-10-25 13:50:48 +09:00
parent 95ef9f02ac
commit 0ae964c680
1 changed files with 14 additions and 7 deletions
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21
boot/platform.c
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@ -85,7 +85,6 @@ int bios_main(void) {
int best_match = 0;
int match_score = 0;
int found_24bit = 0;
#define MATCH(w,h,s) if (match_score < s && vbe_info_width == w && vbe_info_height == h) { best_match = *x; match_score = s; }
@ -96,13 +95,21 @@ int bios_main(void) {
do_bios_call(2, *x);
if (!(vbe_info & (1 << 7))) continue;
if (vbe_info_bpp != 32) continue;
if (!match_score) { best_match = *x; match_score = 1; }
if (vbe_info_bpp < 24) continue;
MATCH(1024,768,2);
MATCH(1280,720,50);
MATCH(1920,1080,75);
MATCH(1440,900,100);
if (vbe_info_bpp == 32) {
if (match_score < 9) { best_match = *x; match_score = 9; }
MATCH(1024,768,10);
MATCH(1280,720,50);
MATCH(1920,1080,75);
MATCH(1440,900,100);
} else if (vbe_info_bpp == 24) {
if (!match_score) { best_match = *x; match_score = 1; }
MATCH(1024,768,3);
MATCH(1280,720,4);
MATCH(1920,1080,5);
MATCH(1440,900,6);
}
//print_int_(vbe_info_width); print_("x"); print_int_(vbe_info_height); print_("x"); print_int_(vbe_info_bpp); print_("bpp\n");
}