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Linux.com: Utah GLX

Jun 18, 2000, 13:46 (0 Talkback[s])
(Other stories by Luke Groeninger)


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"Utah GLX is an open source implementation of SGI's GLX protocol, which also uses several low-level Mesa drivers for several of today's latest 3D accelerators. The effects of having hardware accelerated OpenGL support in Linux are clear, and it is helping to move Linux into the high-end graphics and gaming markets."

"In its third year of development, the Utah GLX project has been traced back to the spring of 1997, but it may have existed even earlier than that. Originally written by Steven Parker, it eventually contained some hardware acceleration for the Matrox Millennium line of video cards. The hardware acceleration infrastructure of it was later improved upon by David Schmenk, which later allowed Wittawat Yamwong to write a new driver for the Matrox G200 video chipset when Matrox released the specifications in the spring of 1999. While not perfect, it was able to run Quake 2 correctly. Since then, support has been added for various chipsets, the most notable being the Matrox G400 chipset, when Matrox released their specifications. Development received another boost when programmer John Carmack, famous for his work in 3D gaming, became involved and helped use his knowledge to improve driver performance."

"The current drivers support the Matrox G200 and G400 chipsets, the ATI RagePro chipset (but not the Rage 128 chipset), the NVidia Riva TNT series, the S3 ViRGE chipset, the SiS 6326 chipset, and the built in video display for the Intel i810 chipset. The Matrox drivers and ATI drivers are considered to be fairly stable: they can run Quake 3 properly at various levels of performance. The S3 driver is considered to be very unstable, and the drivers that NVIDIA provide for the TNT cards are better than the Utah code. The Utah GLX code will only work on XFree86 versions higher than 3.3.5, as 4.0 already has most of the features that it provides. Being based on the Mesa 3D Graphics Libraries, it provides full API compatibility with it, but bugs do sometimes cause graphical glitches."

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