Re: FVWM: fvwm2 - xv can't grab screens

From: Chris Siebenmann <cks_at_hawkwind.utcs.toronto.edu>
Date: Thu, 4 Jun 1998 18:14:53 -0400

| I've found that xv doesn't work properly with 24-bit packed visuals.
| 32-bit works, but 24 doesn't. xwd does work, but xv has the same
| problem displaying 24-bit xwd files as it does with 24-bit screen
| captures!

 This is probably not an issue of the visuals but of the supported
pixmap formats. XFree86 breaks away from a pack of other X servers in
supporting only a 3-byte 24-bit depth pixmap format when the display is
in packed-24bit mode, which causes problems with a number of programs
(including xanim, where I first saw this). Most other X servers
operating in this mode support a 4-bytes-per-pixel mode and do internal
4->3 conversion.

 I can confirm that xv is capable of working fine on a 24-bit-packed
display if there's a 4-byte-per-pixel pixmap format (I just tested it).

        - cks
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Received on Thu Jun 04 1998 - 18:15:31 BST

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