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Bug 6935 - XFree86 on 24-bit, red/blue color planes swapped
XFree86 on 24-bit, red/blue color planes swapped
Product: Red Hat Linux
Classification: Retired
Component: XFree86 (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Preston Brown
Depends On:
  Show dependency treegraph
Reported: 1999-11-11 14:21 EST by kellyc
Modified: 2008-05-01 11:37 EDT (History)
1 user (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2000-02-04 10:34:56 EST
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RHEL 7.3 requirements from Atomic Host:
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Description kellyc 1999-11-11 14:21:21 EST
When our application is run on 24-bit with Red Hat 6.0 and XFree86
the red and blue color planes are swapped.  So if RGB is 255,0,0 you get
blue and if RGB is 0,0,255 you get red.

We don't get this behavior on UNIX or Windows. (Yes, I know one's an OS and
the other's a windowing system.)

Is this fixed in XFree86

If it's not an XFree86 problem do you have any clue why this would happen?

Comment 1 Preston Brown 2000-01-18 15:13:59 EST
what video card are you using?  Chances are *very* likely this was fixed in 6.1.
Comment 2 Preston Brown 2000-02-04 10:34:59 EST
another solution would be don't use 24 bit mode, use "32 bit mode".  32 bit mode
is really 24 bit color as far as X is concerned, the data is just passed to the
card differently.

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