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Max resolution output MadMapper
Posted: Mon Nov 21, 2016 11:15 am
by hellob
Hello,
I'm exploring the option to do a show with 5 HD outputs.
Is Madmapper compatible to output 5x HD?
What is the maximum resolution output of Madmapper?
warm regards,
hellob
Re: Max resolution output MadMapper
Posted: Mon Nov 21, 2016 1:00 pm
by sigmasix
madmapper is not the problem, you can have as many output as you want and the resolution can be huge, your problem will be the computer you use to achieve this… The mac pro is veeeery bad if you have more than 3 output. If it's only for a show it's ok, you'll bleed a bit to set everything up properly but in the end it will work. But for permanent installation, it's hell…also, the mac pro graphic cards are not synchronised so if you want your 6 output next to each other, it's crap…
anyway, good luck with the hardware, the madmapper part is the easy part
Re: Max resolution output MadMapper
Posted: Tue Nov 22, 2016 10:32 am
by mad-matt
We're investigating performances on a Mac Pro with more than 4 outputs. We can run a Syphon stream over 6 full HD outputs at 60 FPS. But as soon as we do more things on the GPU we get a performance drop. There's a hidden workaround: create one big window over multiple screens. The easiest to avoid the problem right now is to use Datapath x4 video splitter, to have 4 outputs from a single output.
We'll keep you updated when we have more feedback about multi-screen on MacPro.
Re: Max resolution output MadMapper
Posted: Wed Nov 23, 2016 6:57 pm
by mad-matt
Hi guyz !
Good news, we solved a major performance issue in MM with AMD drivers. There is a strange behavior when someone uses more than 4 OpenGL contexts with OSX AMD drivers. But we figured it out, all clear now. MadMapper 2.5.0 RC2 will give a major performance boost with more than 3 outputs on a MacPro !
It's there (we replaced the link of the RC1, newsletter coming).
Cheers!
MM dev team
Re: Max resolution output MadMapper
Posted: Mon Jul 24, 2017 2:08 pm
by galateawoodson
Why is there a strange behavior when someone uses more than 4 OpenGL contexts with OSX AMD drivers?
Seems impossible to find an answer.
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domyhomeworkonline
Re: Max resolution output MadMapper
Posted: Sat Aug 12, 2017 10:42 pm
by mad-matt
No idea why, but it's easy to reproduce. When binding a complex shader alternatively over 5 contexts, the engine gets very slow. If using one shader program for 4 contexts, another shader program instance for the 4 next contexts etc. the engine runs smoothly. That's the behavior of the AMD driver, on all OSX versions we tested with.