Bug 6935

Summary:	XFree86 on 24-bit, red/blue color planes swapped
Product:	[Retired] Red Hat Linux	Reporter:	kellyc
Component:	XFree86	Assignee:	Preston Brown <pbrown>
Status:	CLOSED WORKSFORME	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	6.0	CC:	kellyc
Target Milestone:	---
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Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
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Clone Of:		Environment:
Last Closed:	2000-02-04 15:34:56 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description kellyc 1999-11-11 19:21:21 UTC

When our application is run on 24-bit with Red Hat 6.0 and XFree86 3.3.3.0
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 3.3.5.0?

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

Thanks!

Comment 1 Preston Brown 2000-01-18 20:13:59 UTC

what video card are you using?  Chances are *very* likely this was fixed in 6.1.

Comment 2 Preston Brown 2000-02-04 15:34:59 UTC

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.