y.volta wrote: > I noticed that `grub_vbe_bios_set_display_start () which used AX=4F07h > INT10h' used in the fancy menu patch. This will use the video buffer to do > buffering, but this function will fail on some system, Collin told us in his > Journal: > > "However, VMware doesn't seem to support the VBE set display start operation, > at least in the video mode that GRUB uses (for the basic video test, which > uses indexed color 1024x768 mode). " > > so, this may have compatible issue. i think, is there any possible, use a > non-video-card memory to be the drawing buffer, when done, we copy its > contents to video memory? this obviously has performance issue, but has more > compatible.
It will have backwards compatibility mode if not available. And before I will commit any change to support hardware double buffering I will make sure it works in qemu/vmware/my hardware so do not worry about that one. > Furthmore, i suggest, we should implement the bank-switch function in VBE > framework, for there are a few system's video card may have no LFB modes. for > example, here is a card i meet: ( i gathered 22 cards, it is only one without > lfb in each modes; many cards have no lfb in 4 colours mode. ) As I said previously, I have no plan to work with bank switch functionality. You are however free to do so. And please state what card you had? I am pretty surprised that you got vbe3.0 there and no LFB. Oh... and I pretty much don't care about 4 color modes ;). In my opinion they shall be unsupported. 256 index color in minimum feasible for any use. _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org http://lists.gnu.org/mailman/listinfo/grub-devel
