From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org Subject: [Bug 54700] Distorted graphics (double cursor) with GeForce 4200Go (NV28) Date: Wed, 24 Jul 2013 11:33:58 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1465411455==" Return-path: In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: nouveau-bounces+gcfxn-nouveau=m.gmane.org-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Errors-To: nouveau-bounces+gcfxn-nouveau=m.gmane.org-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org List-Id: nouveau.vger.kernel.org --===============1465411455== Content-Type: multipart/alternative; boundary="1374665638.aB2Cf32.14634"; charset="us-ascii" --1374665638.aB2Cf32.14634 Date: Wed, 24 Jul 2013 11:33:58 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=54700 --- Comment #35 from Emil Velikov --- (In reply to comment #34) > > As mentioned it seems like the tiling (pitch) is misset by ~64 (after a quick > > look at the attached picture) > > I'll look around for a doc to understand what you're saying... > My knowledge is kinf of flacky in the area, so here is the way I understand it. Gpus do not always treat and/or use memory on a linear way. It may be handled as a tile with certain dimensions > > Can you do try and establish if the issue happens in or outside of X, and in > > which cases > > what do you mean by outside X? Framebuffer terminal seemed ok, how can I > show a graphic without X? > Yes I meant the framebuffer. Not sure of many ways to draw stuff on it - directFB is project that normally deals with such things [1]. My main point is to understand if the issue is xf86-video-nouveau or libdrm/kernel related > >i.e. in X only when drawing an image of dimensions x1 & y1, or > > less than x2 & greater than y2 > > You mean rescaling a single image or showing images of different pixel size? > > And you really mean drawing (e.g. with office draw) or just showing existing > images? > I meant rendering images of different sizes. Looking at the iceweasel.png at bugs.debian.org indicates not everything rendered exhibits the distortion - would be great to know something specific about the files causing it Simple tests * grab the ice weasel picture, open it in a image viewer (and/or browser) - distorted ? * rescale the image (using gimp or other software), reopen the picture and observe. * same for the cursor file Cheers Emil [1] http://www.directfb.org/docs/DirectFB_Tutorials/image.html -- You are receiving this mail because: You are the assignee for the bug. --1374665638.aB2Cf32.14634 Date: Wed, 24 Jul 2013 11:33:58 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"

Comment # 35 on bug 54700 from 
(In reply to comment #34)
> > As mentioned it seems like the tiling (pitch) is misset by ~64 (after a quick
> > look at the attached picture)
> 
> I'll look around for a doc to understand what you're saying...
> 
My knowledge is kinf of flacky in the area, so here is the way I understand it.
Gpus do not always treat and/or use memory on a linear way. It may be handled
as a tile with certain dimensions

> > Can you do try and establish if the issue happens in or outside of X, and in
> > which cases
> 
> what do you mean by outside X? Framebuffer terminal seemed ok, how can I
> show a graphic without X?
> 
Yes I meant the framebuffer. Not sure of many ways to draw stuff on it -
directFB is project that normally deals with such things [1]. My main point is
to understand if the issue is xf86-video-nouveau or libdrm/kernel related

> >i.e. in X only when drawing an image of dimensions x1 & y1, or
> > less than x2 & greater than y2
> 
> You mean rescaling a single image or showing images of different pixel size?
> 
> And you really mean drawing (e.g. with office draw) or just showing existing
> images?
> 
I meant rendering images of different sizes. Looking at the iceweasel.png at
bugs.debian.org indicates not everything rendered exhibits the distortion -
would be great to know something specific about the files causing it

Simple tests
* grab the ice weasel picture, open it in a image viewer (and/or browser) -
distorted ?
* rescale the image (using gimp or other software), reopen the picture and
observe.
* same for the cursor file

Cheers
Emil


[1] http://www.directfb.org/docs/DirectFB_Tutorials/image.html

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