148914 - SVG ouput is horribly corrupt when using nvidia's X11 driver at 24bit depth.

Status: RESOLVED FIXED

(Core :: SVG, defect)

Description

[Philip Langdale]

I don't really see why it's possible, but mozilla's svg component combined with
nvidia's X11 driver == a horrible mess.

See the two attachments for examples.

The first example is the good old lion newly opened.
The second example is the lion after being repeatedly obscured and revealed by
another window.

It's very strange that one's choice of X11 driver could have this effect.

Comment 1

[Philip Langdale]

Attachment: Example 1) Lion newly displayed.

Comment 2

[Philip Langdale]

Attachment: Example 2) Lion after when covered and uncovered by another window

Comment 3

[David Avery]

i can't reproduce in latest builds , using a matrox card - note: you have no
colors because of the color depth you are using 

Comment 4

[Philip Langdale]

Fair enough, I dropped back to 16 bit colour and it worked correctly. However, I
take it that the horrible output at 24 bit is a bug of some sort?

Comment 5

[Andrey ``Bass'' Shcheglov]

The same problem on NVidia at 24 bpp. Moreover, the problem occurs both with
XFree's "nv" driver and NVidia's "nvidia".
Mozilla v1.4, Linux 2.4.22.

Comment 6

[Nicolas George]

This was indeed not a driver specific problem: the same occurs with XFree86 and
drivers ati.2 and neomagic, and with the VNC X server. On all test cases, the
problem arises with 24 bit depth, and not 16 bit depth (and I am told it is ok
with 32 bit depth too). This was true with Mozilla 1.6 from Debian.

But the problem has disappeared in the CVS version.

Comment 7

[Philip Langdale]

Yes, the problem does indeed not affect the new svg implementation so we can
call this fixed now.