Calculate font size from 16 density independent pixels (dp) by using:
size = 16 * ppi/160 * display_factor
We are specifying font size 16dp, and assuming 1dp = 160ppi.
Also apply scaling factor 2 (display_factor).
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D28849
The VT screen buffer size is calculated based on our default
built in (8x16) font.
With high-resolution display, we want to use at least 8x16 font,
or we will have large unused areas on screen.
MFC after: 1 week
BORDER_PIXELS is left over from picking up the source from illumos
port. Since FreeBSD VT does not use border in terminal size
calculation, there is no reason why should loader use it.
MFC after: 1 week
Draw console on efi.
Add vbe framebuffer for BIOS loader (vbe off, vbe on, vbe list,
vbe set xxx).
autoload font (/boot/fonts) based on resolution and font size.
Add command loadfont (set font by file) and
variable screen.font (set font by size). Pass loaded font to kernel.
Export variables:
screen.height
screen.width
screen.depth
Add gfx primitives to draw the screen and put png image on the screen.
Rework menu draw to iterate list of consoles to enamble device specific
output.
Probably something else I forgot...
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D27420
