On Do, 6.09.2012, 18:34, Ferdinand Majerech wrote:
> I was able to reproduce the blurring.
>
> Not sure what is causing it but will try a few things and bisect if
> needed.
> Seems like a projection bug, but I didn't change the code for
> perspective projection.

Strange.

> The stereographic projection bug -I didn't reproduce it yet, but it
> might be caused by doing projection on shader (lower precision
> computation than working with floats on CPU) - Stereographic is the
> only projection implemented in shader. This is only used with GL2 -
> were the screenshots made with GL2 backend?

Yes, on my hi-end notebook.

Starting both 11.4 and r5592 with --safe-mode has the same result, the
older version has better curvature. (the logfile confirms it uses OpenGL
[not 2] paint engine)

> I can't reproduce the lighting problem.

It's not really critical, just the scene is lighter in general. If you
have very bright parts in the landscape, they may become overexposed when
the sun is high. Currently I cannot see it either.

>
> Unfortunately I don't have experience with QtCreator.
>>From terminal, you need to pass -DCMAKE_BUILD_TYPE=Release
> (or RelWithDebInfo) to the cmake command, but no idea how you could do
> that in QtCreator.
>
>
> I think the current MinGW version can only compile 32bit, but mingw-builds
> has builds for 64bit. No idea how you would set it up,  though - I
> don't use Windows and only set up MinGW based on tutorial on the wiki.

Yes, me too. Alexander, you are building the win64 packages. Can you
please describe how and where to set these building vars? I know I can set
it in the project's main CMakeLists.txt, but there may be a better way.

TNX, Georg.

> On 9/6/12, Georg Zotti <georg.zo...@univie.ac.at> wrote:
>> Dear Ferdinand,
>>
>> I just built and launched 5592/MinGW/QtCreator/compiled-as-downloaded on
>> Win7-64/i7/NVidia GTX580M (OpenGL4.2.0).
>>
>> Performance here may be even slightly better than the pre-merge trunk
>> (running both in parallel, I have about 55fps vs. 51 fps for similar
>> settings, but both numbers are not stable, so I would say they perform
>> approximately equal).
>>
>> But at least in perspective projection, with a "spherical" landscape,
>> the
>> image corners in wide-angle mode are worse than before. See attached
>> screenshots. The triangles on the corners are extremely blurred. Is
>> there
>> a bug in the texture mapping for clipped triangles?
>>
>> https://dl.dropbox.com/u/30092392/stellarium-11.4.png
>> https://dl.dropbox.com/u/30092392/stellarium-r5592.png
>>
>> Also, in stereographic mode, the tesselation appears to be much coarser,
>> so there are visible straight edges where there were none previously.
>> Compare screenshots:
>>
>> https://dl.dropbox.com/u/30092392/stellarium-11.4b.png
>> https://dl.dropbox.com/u/30092392/stellarium-r5592b.png
>>
>> The metal bars along the horizon are actually an artificial horizon, and
>> should follow the horizon markers. It's a square seen from the inside,
>> so
>> there should be no edges at 90/180°. Here, also the illumination seems
>> to
>> be too bright, the gray concrete is overexposed in the lower left.
>>
>> So much for my first impressions. I will try to make a "release" build
>> for
>> my netbook soon. Do I have to set this in CMakeLists.txt or is there a
>> setting in QtCreator for this? Also, where do I set a 64bit compile? (Is
>> this possible with MinGW?) I guess failing to load star catalog 8 is
>> caused by the 32bit addressing limit.
>>
>> TNX, G.
>>
>> On Do, 6.09.2012, 08:13, Ferdinand Majerech wrote:
>>> There are still performance issues getting fixed.
>>>
>>> Just after 5592 there was another significant improvement
>>> (not yet in trunk): could you test how it compares?
>>> (https://code.launchpad.net/~kiithsacmp/stellarium/glexperiment) (Also
>> describe the load you're getting 4-7FPS with? (just opened Stellarium?)
>>>
>>> Still, those results seem worse than what I'd expect from 5592.
>>> Did you build the release build? Debug build is visibly slower.
>>> (I have ~30FPS -when launched - on an Athlon64 3200+.)
>>>
>>
>


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