On Mon, Jun 9, 2008 at 1:17 AM, Vesa Jääskeläinen <[EMAIL PROTECTED]> wrote: > Bean wrote: >> >> BTW, you need to remove the udev start script from /etc/rcS.d, >> otherwise the screen would scramble again. I believe the cause is >> agppart. Fame buffer of EFI is a little strange, the line length is >> not equal to width * 4, for example, my macbook: >> >> width: 1280 >> depth: 32 >> line length: 8192 > > This is quite normal and can change from card to card. So thats the reason > you ask for line length from VBE/HW. > >> So there is some invisible space after the screen boundary. But in >> bios emulation mode, the length is exactly width * 4. I think the >> driver should take this into account, or reconfigure the video >> hardware to use the new line length. (Anyone know how to do it ?) > > GRUB 2 VBE driver already should work nicely with this (assuming VBE is > available). If you are planning to do EFI driver then you just use its API > to do blitting. Writing driver for EFI should be rather easy if I remember > correctly its interface. Can't write that driver myself unless someone wants > to provide me environment to do the coding.
Hi, I think the vbe driver need to call bios, is there a way to do it directly ? EFI have uga draw protocol that can do bitblt, but they don't have a method to query low level information like frame buffer address and line length easily. -- Bean _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org http://lists.gnu.org/mailman/listinfo/grub-devel
