2006/5/1, Raeth <[EMAIL PROTECTED]>:
Greetings,
I am running Ubuntu Dapper, Beta 2. I've set my Graphire 4 up
according to the official documentation.
Now the tablet technically works, as I get pressure sensivity in The
GIMP and Cinepaint, however my major problem is the quality, and I
think it would be best illustrated with a comparison between the
(technically working) Linux drivers, and the official Wacom drivers
running on Windows.
This is how it looks in Linux (GIMP): http://phoxart.com/raeth/brush_linux.png
At first it might look fine, but I'll explain: #1 shows the lack
of pressure levels. It seems to jump from slightly faint to full
opacity, and the straight strokes' size jitters, without much change
to the actual size (this is no good for painting).
There is a sensibility curve program to linearize response in
wacom-tools. Don't know if is really functional.
#2 shows the disintegration of accuracy when using small brush
sizes. 1 px brushes make a horrible jittery mess, and is intermittent
when writing small text (this is no good for inking).
I believe this is a Gimp fault, with only pixel accuracy. If you zoom
to the maximum you will see it only paints taking the pixel that is
behind the pen.
#3 A rapid succession of strokes causes every other stroke to
cease (missing strokes shown by black dashes). This seems to be caused
by GIMP's slow history intake, as the stroke stops if I paint before
the undo image has loaded (this is no good for painting and writing).
Cinepaint is much faster, but has terrible quality :P
Gimp is not very good with this.You can improve things a little using
pressure sensibility options into tool options to compare with the
Photosoft picture you made.
The circle shows a lag that occurs at the start of strokes,
causing an odd angle at the start and end of rapid strokes.
This is how it looks in Windows (Photoshop)
http://phoxart.com/raeth/brush_win.png
Needless to explain, but: #1 Consistent pressure gradient.
#2Smooth 1 px lines, consistent writing.
#3Rapid strokes handled fine, showing that it's GIMP's
efficiency, and not my computer being slow.
I would greatly appreciate any solutions or suggestions anyone may
have. I've been trying to fix this problem for a year now, starting
with a Volito, multiple distros and various settings.
I'm beginning to believe that this quality is what I'm supposed to be
getting, and Linux users think that it's good quality because they
have never used it with the official drivers. If this is the case, I
hope I can get the message across to the developers that all the
success stories are false. :D
I always wondered what drivers Lucas Arts uses for its Linux graphics
workstations. I suppose they use the Unix drivers directly provided by
Wacom support.
Jose Hevia
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