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2014.03 on Debian 7.7 preview rendering problem (some facets 100% white)

J
jbeale
Tue, Dec 30, 2014 1:28 AM

OpenSCAD 2014.03 on Debian 7.7 renders some facets incorrectly
in the preview window, and the axes are unlabelled (should show X Y Z).
Here is an example showing the problem
https://lh4.googleusercontent.com/-ojCJY79vWDQ/VKH9U3q7dbI/AAAAAAAAD-Q/HNOOUecOF0M/s512/OpenSCAD-problem.jpg

Most of the model appears as expected, but a subset of facets appear full
white.
The problem appears on all .scad files.

Computer:
Debian 7.7 (wheezy) 64-bit
Linux 3.2.0-4-amd64
GNOME 3.4.2
Video Card:
NVIDIA G98 [GeForce 8400 GS] with Nouveau driver
Display:
Resolution 1280x1024 pixels
OpenGL Renderer:  Gallium 0.4 on NV98

$ lspci -nn | grep VGA
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation G98 [GeForce
8400 GS] [10de:06e4] (rev a1)

At first I assumed it was just the Nouveau driver or OpenGL renderer was
broken.
But as a check, after doing this:
http://askubuntu.com/questions/299345/how-to-enable-webgl-in-chrome-on-ubuntu

...I found that this WebGL 3D rendering demo works OK (Chrome browser):
https://developer.mozilla.org/en-US/demos/detail/formula1-using-threejs

Last month when this computer was still running Windows XP, I did not see
this problem; I had OpenSCAD 2014.03 rendering OK.

I am reluctant to switch out Nouveau for the NVIDIA proprietary driver
because everything else works.  I have tried the NVIDIA driver before on
this box in several different Ubuntu and Debian installs and the computer
would not often even boot up after a suspend, or sometimes even a cold
reset.

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OpenSCAD 2014.03 on Debian 7.7 renders some facets incorrectly in the preview window, and the axes are unlabelled (should show X Y Z). Here is an example showing the problem https://lh4.googleusercontent.com/-ojCJY79vWDQ/VKH9U3q7dbI/AAAAAAAAD-Q/HNOOUecOF0M/s512/OpenSCAD-problem.jpg Most of the model appears as expected, but a subset of facets appear full white. The problem appears on all .scad files. Computer: Debian 7.7 (wheezy) 64-bit Linux 3.2.0-4-amd64 GNOME 3.4.2 Video Card: NVIDIA G98 [GeForce 8400 GS] with Nouveau driver Display: Resolution 1280x1024 pixels OpenGL Renderer: Gallium 0.4 on NV98 $ lspci -nn | grep VGA 01:00.0 VGA compatible controller [0300]: NVIDIA Corporation G98 [GeForce 8400 GS] [10de:06e4] (rev a1) At first I assumed it was just the Nouveau driver or OpenGL renderer was broken. But as a check, after doing this: http://askubuntu.com/questions/299345/how-to-enable-webgl-in-chrome-on-ubuntu ...I found that this WebGL 3D rendering demo works OK (Chrome browser): https://developer.mozilla.org/en-US/demos/detail/formula1-using-threejs Last month when this computer was still running Windows XP, I did not see this problem; I had OpenSCAD 2014.03 rendering OK. I am reluctant to switch out Nouveau for the NVIDIA proprietary driver because everything else works. I have tried the NVIDIA driver before on this box in several different Ubuntu and Debian installs and the computer would not often even boot up after a suspend, or sometimes even a cold reset. -- View this message in context: http://forum.openscad.org/2014-03-on-Debian-7-7-preview-rendering-problem-some-facets-100-white-tp10803.html Sent from the OpenSCAD mailing list archive at Nabble.com.
TP
Torsten Paul
Tue, Dec 30, 2014 1:56 AM

On 12/30/2014 02:28 AM, jbeale wrote:

OpenSCAD 2014.03 on Debian 7.7 renders some facets incorrectly
in the preview window, and the axes are unlabelled (should show X Y Z).
Here is an example showing the problem
https://lh4.googleusercontent.com/-ojCJY79vWDQ/VKH9U3q7dbI/AAAAAAAAD-Q/HNOOUecOF0M/s512/OpenSCAD-problem.jpg

Could you please try if the snapshot version shows the same issue?

See http://www.openscad.org/downloads.html#snapshots-linux-auto for details.
The package and binary are called openscad-nightly to make them installable
in parallel to the normal release version.

ciao,
Torsten.

On 12/30/2014 02:28 AM, jbeale wrote: > OpenSCAD 2014.03 on Debian 7.7 renders some facets incorrectly > in the preview window, and the axes are unlabelled (should show X Y Z). > Here is an example showing the problem > https://lh4.googleusercontent.com/-ojCJY79vWDQ/VKH9U3q7dbI/AAAAAAAAD-Q/HNOOUecOF0M/s512/OpenSCAD-problem.jpg > Could you please try if the snapshot version shows the same issue? See http://www.openscad.org/downloads.html#snapshots-linux-auto for details. The package and binary are called openscad-nightly to make them installable in parallel to the normal release version. ciao, Torsten.
J
jbeale
Tue, Dec 30, 2014 6:38 PM

Thank you very much for that link! I can confirm that the rendering bug is
fixed on my Debian 7.7 x64 system, using OpenSCAD version 2014.12.30.nightly
(git bebe084)

Now back to being a happy OpenSCAD user!
regards,
John

--
View this message in context: http://forum.openscad.org/2014-03-on-Debian-7-7-preview-rendering-problem-some-facets-100-white-tp10803p10812.html
Sent from the OpenSCAD mailing list archive at Nabble.com.

Thank you very much for that link! I can confirm that the rendering bug is fixed on my Debian 7.7 x64 system, using OpenSCAD version 2014.12.30.nightly (git bebe084) Now back to being a happy OpenSCAD user! regards, John -- View this message in context: http://forum.openscad.org/2014-03-on-Debian-7-7-preview-rendering-problem-some-facets-100-white-tp10803p10812.html Sent from the OpenSCAD mailing list archive at Nabble.com.