On Thu, 4 Jun 2015, IMAP List Administration wrote:
On the original hardware, xdpyinfo tells me:
> [...]
> supported pixmap formats:
> [...]
> depth 4, bits_per_pixel 8, scanline_pad 32
> [...]
> screen #0:
> [...]
> depths (4): 8, 12, 24, 4
I can muddy the water for you. On my VMS 8.3 box (a not new Alphastation
500) I get this:
richardlo $ xdpyinfo
name of display: _WSA2:
version number: 11.0
vendor string: DECWINDOWS Hewlett-Packard Development Company OpenVMS
vendor release number: 8003
maximum request size: 65535 longwords (262140 bytes)
motion buffer size: 0
bitmap unit, bit order, padding: 32, LSBFirst, 32
image byte order: LSBFirst
number of supported pixmap formats: 2
supported pixmap formats:
depth 1, bits_per_pixel 1, scanline_pad 32
depth 8, bits_per_pixel 8, scanline_pad 32
So I don't have a pixmap format with a depth of 4 either. But my Redhat
Linux EL6.6 box does, it reports support for 1, 4, 8, 15, 16, 24, and 32.
If further muddying is required, my about 20 year old Alphaserver 800 running
VMS 8.2 with a Powerstorm something (maybe 3D30 or 4D20?) graphics card and my
PWS 500a(u) running VMS 8.3 and some slightly lesser capable graphics card that
I cannot recall the name of at all both report this:
visual:
visual id: 0x36
class: PseudoColor
depth: 4 planes
size of colormap: 16 entries
red, green, blue masks: 0x0, 0x0, 0x0
significant bits in color specification: 4 bits
and this:
SERVER_OVERLAY_VISUALS(SERVER_OVERLAY_VISUALS) = 0x36, 0x1, 0x0, 0x1
Regards,
Peter Coghlan.