RageIIc does not support OpenGL, but it is possible to use OpenGL wrapper, it should work. RagePro Tweaker versions are mostly for RagePro.
RagePro Tweaker version 1.0 to 1.2 has readme with this info , under rage2.
This release of the Rage Pro Tweaker does not detect what type of card you have. Some of the 3D options will work, and the overclocker should work - except for the reset to defaults option. The opengl drivers do not work on the Rage II or II+ so the opengl options will not work.
Use also Rage2-Tweaker, but it may need some extra files for windows. I have more experience with RagePro, my first graphics card. I have tested Rage2c with Direct3D and 3DCiF just little, it works, but i would like to get more fps, at least without overclocking and tweaking. Rage Pro has PCI and AGP option, it is possible to disable integrated graphics and use some available free slot for faster graphics card.
I have not used 4.10 dx5 drivers now, dx7a setup file seems not that big ,compared to dx6.1 and dx5.0
I uploaded all three RagePro-Tweaker versions and one Rage2-Tweaker here to download.
https://www.upload.ee/files/12871985/rage2-ra … weaker.zip.html
Good that we have RageXL working 3DCIF driver, Thin clients and server motherboards have RageXL integrated graphics, also rage2c and rage pro on older motherboards.
I have HP t5000 series thin client - t5300 with transmeta crusoe tm5600 cpu and ati xl graphics, this would be nice dos and win9x machine, it just need bigger ide 44-pin dom and then i am ready to start. Usb 1.1 is bit slow, but for mouse and keyboard it is good and even for usb stick, it is sometimes ok.