Testing Nvidia GPU, Intel GPU affinity / Optimus

[Josh]

If you're interested and available to test the graphics card switching for Nvidia/Intel graphics on laptops, please speak up here. I went to the store to pick one of these up for testing, but they don't sell them anymore at Best Buy. The fix is pretty simple, but I would like to confirm it with an end user first if possible. Thank you.

 

This will make it so Leadwerks automatically chooses the discrete card, rather than having to manually set up a profile.

[bandrewk]

I am interested! What information do you need?

[Josh]

Well, the first step is to make sure you don't create or delete your profile for the application, so you can produce the problem reliably.

[bandrewk]

When using the default settings Leadwerks is using the integrated Intel graphics card:

 

Initializing OpenGL4 graphics driver...

OpenGL version 420

GLSL version 420

Device: Intel® HD Graphics 4600

 

Which causes a fragment shader error inside Leadwerks 3.1:

 

WARNING: -1:65535: '#version' : version number deprecated in OGL 3.0 forward compatible context driver
ERROR: 0:28: 'texture2D' : function is removed in Forward Compatibile context
ERROR: 0:28: 'texture2D' : function is removed in Forward Compatibile context
ERROR: 0:28: '=' : cannot convert from 'const float' to '4-component vector of float'
Failed to compile fragment shader.
Error: Failed to compile fragment shader.

 

Leadwerks 3.0 is logging some shader error too:

Failed to link shader.

 

I am able to reproduce the problem.

[Josh]

Okay, supposedly if I link in nvapi.lib it should just work. I already tried their exposed variable suggestion, and it did nothing.

[meteorstorm]

When you have the fix for Ati, I would very much like to test that.

[Josh]

I had to drive all over town looking for one of these machines, as they are not being sold much anymore. Once I got the hardware in my hands it was very easy to fix. It works perfectly now.

[meteorstorm]

Yea! Congrats on the fix!