Whats the nvidia blob implementations dri implementation called?

[YusufKhan-gamedev]

Simple question, whats the nvidia blob implementations name configured as, should be the result of xdriinfo driver 0 or xdriinfo driver 1.

[aaronp24]

The NVIDIA GLX implementation doesn't support the glXGetScreenDriver function that xdriinfo uses, so it just prints

Screen "0" is not direct rendering capable.

The nvidia-drm.ko kernel module registers itself with the drm subsystem with the name "nvidia-drm".

[aaronp24]

If you want to detect the presence of the NVIDIA X driver, you can check for the NV-CONTROL extension. You can check whether each particular X screen is using the NVIDIA driver by querying the GLX vendor string or by using the XNVCTRLIsNvScreen function.

[YusufKhan-gamedev]

Detecting the presence of the kernel driver is fine enough.

[YusufKhan-gamedev]

Wait, sorry, in that case where is dri loaded from?

[aaronp24]

"dri" can refer to a lot of things. Which component specifically are you asking about? If you're asking about direct OpenGL rendering in general, the NVIDIA GLX driver (and EGL and Vulkan) implement direct rendering on their own without using the X server's DRI2 or DRI3 extensions and without using the kernel's drm system directly.

There are some interop cases such as rendering on an NVIDIA GPU and displaying on another vendor's GPU that do use the kernel's drm subsystem and the DRI3 extension.

[YusufKhan-gamedev]

I meant the Xserver's DRI(or Mesa's /lib/dri/*_dri.so), thanks for the clarification!