Poor 3D performance in glxgears on RPi0 2 W

[trithilon]

The only extensions I load are TC and glxinfo.
I seem to be getting 24 FPS in the default window size.
My HDMI resolution doesn't seem to matter nor does enabling/disabling KMS drivers from config.txt

glxgears on Raspian (Buster) gives me 200 FPS on Legacy drivers.
And upto 700 FPS on Full KMS drivers.

Is there a way to achieve the same performance on TCL?

[Juanito]

You need the Xorg-3d extension and:

dtoverlay=vc4-kms-v3d
gpu_mem=128
sudo rm /usr/local/share/X11/xorg.conf.d/fbturbo.conf

[trithilon]

It worked. Thanks! Getting 800+ FPS
For anyone else reading make sure you delete fbturbo.conf BEFORE your run startx. Else it won't work.

Could you tell me what is the purpose of deleting the fbturbo.conf for my learning?

[Juanito]

Could you tell me what is the purpose of deleting the fbturbo.conf for my learning?

The fbturbo driver prevents 3d from working.