OpenGL 4 compatible graphics card - really needed

[Tommek]

Hi Guys,

 

I have a strange behaviour on one of my systems.

I bought the steam version so I can use Leadwerks on any system.

 

I've got one PC that has Linux installed it uses a NVIDIA GT 240, here Leadwerks runs smooth so far, but it shouldn't as I see it. The Card only supports OpenGL 3.3

 

On my Laptop I have a Intel HD 4000 (build into the CPU), the Linux driver only supports OpenGL 3.2 and Leadwerks won't start. I also have an installation of Windows 8.1 on an external drive (wintousb), here Leadwerks starts (because the windows driver supports OpenGL 4.0 but I have different Problems -> http://www.leadwerks.com/werkspace/topic/10594-win-81-exception-access-violation-on-loading-tutorial-maps/

 

To get near this Problem I have plugged my USB-Win 8.1 in my Linux PC (GT 240), the driver also supports OpenGL 3.3 but Leadwerks won't start.

 

tl;dr;

Leadwerks runs on Linux machine with OpenGL 3.3 and on windows not.

Why?

[Rastar]

I don't know the latest status on this, but: Josh was planning to do an OpenGL 3.3 fallback on Linux (not on Windows) due to lacking driver support for OpenGL4+ on some systems.

 

http://www.leadwerks.com/werkspace/topic/9229-installing-leadwerks-for-linux/page__hl__fallback

 

So you're GT240 might fall back to 3.3 under Linux (but not under Windows), while the 3.2 driver isn't supported.

[Tommek]

Thanks Rastar, that explains this.

So I just ordered a new graphics card. I will do some more testing for my win8.1 problem then.

 

thanks so far

[Josh]

I got a Gigabyte Steam Machine and Intel's Linux drivers don't support GL4 even though the hardware does. So I allowed it to run on Linux with OpenGL 3 even though it isn't supported.

 

This may have totally unpredictable effects, since I don't know what GL4 features the driver has implemented. For example if you try to load a tessellation shader it will crash. Or maybe it won't.

 

So OpenGL 4 still is the official system requirement, and it might or might not work below that on some systems, and behavior could change at any time.

[CrazyM]

Any chance you can post that to the steam beta branch? I have an Intel Haswell NUC with HD 5000 graphics running Ubuntu 14.04 LTS, with OpenGL 3.0 Mesa 10.2.2. I'd love to test the Linux build on it.

[CrazyM]

Maybe a Steam code-based private beta if you don't want it to roll out to all beta users? This NUC is dedicated to the cause and only used as a test machine so it's a good candidate.

[Josh]

It is on both branches. For some reason my Intel 5200 still doesn't work, so I don't know what's going on.

[CrazyM]

Same here, I'm still getting the "Failed to initialize graphics" message as the UI loads.

[Josh]

Yeah, it's really weird to see the Leadwerks Editor splash screen pop up on my HD TV in the living room.

[CrazyM]

Mmmmm couch programming.