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Re: [Manta] bug ?


Chronological Thread 
  • From: Ingo Wald <wald@sci.utah.edu>
  • To: James Bigler <bigler@cs.utah.edu>
  • Cc: manta@sci.utah.edu
  • Subject: Re: [Manta] bug ?
  • Date: Thu, 23 Aug 2007 14:30:29 -0600
Problem disappeared after reboot.
Sounds like x-server, then ....

:-| (good: not our problem; bad: no way to fix it...)

Ingo

James Bigler wrote:

Did you try building a non-SSE build like I suggested?

James

Ingo Wald wrote:

Clicking the image center: Manta Window
Extreme left, outside the frame but still covered by manta-generated pixels: desktop
Extreme right, inside the frame, but outside the written pixels: Manta Window.

All other windows behave as expected.

Cheers,

Ingo


Steven G. Parker wrote:

Ingo, can you try this?
Type xwininfo, then click in the manta window
Do it again, but do it at the extreme left (i.e. outside of what should be the window)
And one more time but do it at the hole on the right.

I suspect it is a bug in the xserver or opengl driver, but it won't hurt to be sure.

Steve


On Aug 23, 2007, at 3:56 PM, Ingo Wald wrote:

Ingo Wald wrote:

hi all,

just compiled manta on my new t61, and noticed something that looks like a bug (both gcc and icc, release mode): the displayed image is not correctly aligned inside the frame of the "parent" window, but somewhat "shifted" to the left.
On the left side, pixels appear "outside" the frame (in the background, actually, where they remain if you move the frame !?), while on the right, a few pixels are left un-initialized. The number of wrong pixel-rows depends on the window pos, looks somewhat like if the window goes from x0 to x1 then the written pixels start at "lowestmultipleof8(x0)", and go 'til "lowestmulitpleof32(x1)" (8 and 32 are guesses only, it's hard to tell).

Ingo

PS:
Could also be a bug in the x-server -- it behaves a bit strangely after I tried to run some cuda stuff....

screenshot:
http://www.sci.utah.edu/~wald/buggy.png

hope that helps finding it ...

Ingo







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