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- Newsgroups: comp.unix.aix
- Path: sparky!uunet!newsgate.watson.ibm.com!yktnews!admin!watson!mjp
- From: mjp@austin.ibm.com (Michael J. Phelps)
- Subject: Re: How do I set the gamma correction?
- Originator: mjp@bwa.kgn.ibm.com
- Sender: @watson.ibm.com
- Message-ID: <1992Dec17.132156.60821@watson.ibm.com>
- Date: Thu, 17 Dec 92 13:21:56 GMT
- Reply-To: mjp@vnet.ibm.com (Michael J. Phelps)
- References: <102308@netnews.upenn.edu>
- Organization: IBM Kingston NY
- Lines: 23
-
-
- In article <102308@netnews.upenn.edu>, holder@central.cis.upenn.edu (Gaylord Holder) writes:
- |> I have a new RS6000/580 that I have to put a thrid party monitor on.
- |> It is an SGI multi-sync monitor, and the picture comes through fine,
- |> but the gamma correction is wrong. SGI uses a gamma of 1.7, and IBM
- |> uses 2.4 (according to InfoExplorer).
- |>
- |> Is there a way to change the gamma the hft device driver uses?
- |>
- |> -Gaylord
- |>
-
- On the sabine (hiperf3d) adapter, the gl call will set the gamma function. I
- don't know if the other IBM adapters support setting gamma. Out of curiousity
- where in infoexplorer was the gamma=2.4 reccommended? My experience with the
- 5081/6091 displays (working with antialiasing) was that 1.6 - 1.7 was the
- appropriate gamma value.
- BTW we were performing gamma correction on the color table prior to loading it.
-
- --
- Michael Phelps, (external) mjp@vnet.ibm.com ..
- (internal) mjp@bwa.kgn.ibm.com .. mjp at kgnvmy
- (and last but not least a disclaimer) These opinions are mine..
-