home *** CD-ROM | disk | FTP | other *** search
- From: hstroyan@hpfcso.FC.HP.COM (Howard Stroyan)
- Date: Wed, 26 Aug 1992 17:02:14 GMT
- Subject: Re: Graphics adapter crx24 and Motif 1.1
- Message-ID: <7371262@hpfcso.FC.HP.COM>
- Organization: Hewlett-Packard, Fort Collins, CO, USA
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!sdd.hp.com!hp-cv!hp-pcd!hpfcso!hstroyan
- Newsgroups: comp.sys.hp
- References: <tghe337.714756041@cdc835>
- Lines: 34
-
- In comp.sys.hp, tghe337@cdc835.cdc.polimi.it writes:
-
- > Some news wanted about interfacing a CRX24 board with MOTIF 1.1
- > widgets :
- > 1) 24 bits depth drawing areas and related lut manipulation
- > 2) simultaneous display of image planes and overlay ( 24+8 )
-
- I spend my time on the 3D graphics API side of things, so MOTIF is
- not my strong suit, but here are some pointers.
-
- The CRX24 serve supports 4 different X visual:
- 8 bit PseudoColor (overlay) - the default/root visual
- 8 bit PseudoColor (image) - like the default but in the image planes
- 24 bit DirectColor(image) - this is what you are looking for.
- 12 bit DirectColor(image) - not particularly useful except for
- 3d API double buffering.
-
- Look at the manual "Starbase Graphics Techniques":
- Chapter 22 "Using Starbase with the X Window System"
- "Guidelines for Portability "
-
- This section discusses the SERVER_OVERLAY_VISUALS property which can be
- used as a portable means of determining overlay visual availability and
- usage.
-
- This information is applicable to pure X11 applications as well as
- Starbase. I'm not as familar with the application of the transparency
- index (returned by the SERVER_OVERLAY_VISUALS property) to the Motif
- toolkits. Perhaps someone else can fill in here.
-
- --
- Howard Stroyan
- Hewlett-Packard hstroyan@fc.hp.com
- User Interface Technology Division
-