Mathias Fröhlich schrieb:
> Hi,
>
> On Saturday 19 May 2007, gh.robin wrote:
>
>> I try to understand the big FPS differences i get when i build FG
>> first with an old OSG library 10 april 2007,
>> second with a recent OSG library 1.9.4 version
>>
> I believe that you built osg without optimization.
> When building without optimization you get what you ask for. Unoptimized code
> that takes hours for the cpu intensive jobs like culling. That is also what
> the stats show ...
>
> Configure osg with ist's new build system as a Release version. Or provide
> CMAKE_CXX_FLAGS and CMAKE_C_FLAGS on the command line of cmake.
> I run cmake with something like
>
> cmake -D CMAKE_CXX_FLAGS="-O3 <and some more>" \
> -D CMAKE_C_FLAGS="-O3 <and some more>" \
> -D CMAKE_VERBOSE_MAKEFILE=TRUE .....
>
> Please try ...
>
> Greetings
>
> Mathias
>
>
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>
Hi Mathias,
Gerard is only *one* of many who are using OSG for a long time but
suddenly getting very, very bad framerates with the latest CVS OSG versions.
Do I understand it right that I get the "optimization" when I just call
cmake (for OSG only, not for OpenThreads or Producer) in that way:
cmake -D CMAKE_CXX_FLAGS="-O3" \
-D CMAKE_C_FLAGS="-O3" \
-D CMAKE_VERBOSE_MAKEFILE=TRUE
(I deleted <and some more>).
But strange enough, this was not necessary for a long time and I got suffizient
framerates though.
Thank you!
Regards
Georg EDDW
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