Bug 3511 - Wrong Palette on monochrome device
Summary: Wrong Palette on monochrome device
Status: RESOLVED INVALID
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/Radeon (show other bugs)
Version: 6.7.0
Hardware: x86 (IA32) Linux (All)
: high normal
Assignee: Xorg Project Team
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Reported: 2005-06-10 06:19 UTC by Daniel Stone
Modified: 2005-09-25 15:10 UTC (History)
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Description FreeDesktop Bugzilla Database Corruption Fix User 2005-06-10 06:19:56 UTC 
We use a graphic board with a radeon chip to drive a 5 megapixel monochrome
monitor. Now we recognized that you can't distinguish a difference between
pixel-value 0 and pixel-value 1.
We changed the method RADEONLoadPalette to trace the palette values we receive
from the caller. Here is the output:

(II) RADEON(0): Largest offscreen area available: 2048 x 5621
(!!) RADEON(0): RADEONLoadPalette ENTERED
(II) RADEON(0): Load Palette: 0 - 0 0 0
(II) RADEON(0): Load Palette: 1 - 0 0 0
(II) RADEON(0): Load Palette: 2 - 1 1 1
(II) RADEON(0): Load Palette: 3 - 2 2 2
(II) RADEON(0): Load Palette: 4 - 3 3 3
(II) RADEON(0): Load Palette: 5 - 4 4 4
(II) RADEON(0): Load Palette: 6 - 5 5 5
(II) RADEON(0): Load Palette: 7 - 6 6 6
(II) RADEON(0): Load Palette: 8 - 7 7 7
(II) RADEON(0): Load Palette: 9 - 8 8 8
(II) RADEON(0): Load Palette: 251 - 250 250 250
(II) RADEON(0): Load Palette: 252 - 251 251 251
(II) RADEON(0): Load Palette: 253 - 252 252 252
(II) RADEON(0): Load Palette: 254 - 253 253 253
(II) RADEON(0): Load Palette: 255 - 254 254 254
(II) RADEON(0): Direct rendering disabled

You can see that the palette is "shifted" one step down and the output for index
 0 and 1 is zero. That's why we loose the pixel-value 1.
Comment 1 FreeDesktop Bugzilla Database Corruption Fix User 2005-06-10 06:21:22 UTC 
Created attachment 2866 [details] [review]
Backport from current CVS

Output of the command xdpyinfo.
Comment 2 T. Hood 2005-09-26 08:10:42 UTC 
no content.

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