Mesa Hardware Device Driver for Matrox MGA-G200 and G400 Copyright (C) 1999 Wittawat Yamwong and Copyright (C) 2000 respective others The driver is known to work for following graphics cards: - Millenium G400 of various models - Millenium G200 and G200SD AGP/PCI 8MB/16MB - Add other cards here... (Mavel & Mytique) FIXME: the info below is not completely up to date. Supported architectures: ------------------------ The driver has been reported to work on the following architectures: Linux/x86 FreeBSD/x86 Solaris/x86 (No bus mastering DMA) Configuration variables ----------------------- The mga driver has a lot of driver specific configuration variables. See the sample glx.conf for details on exactly what a variable does. mga_dma: Set command transfer mode mga_dmaadr: Set address of dma buffer mga_dmasize: Set size of dma buffer mga_cmdsize: Set size of command buffer (Located in dma buffer) mga_gart_mode_mask: Set AGP operating mode mga_systemtexture: Store textures in main memory instead of on card mga_vsync: Wait for vertical sync before swapping buffers The following options are intended for debugging: mga_no_multitex: Disable multitexturing mga_nullprims: Disable triangle rendering mga_nofallback: Never fall back to software rendering mga_nosgram: Disable SGRAM features mga_no_texenvadd: Disable the GL_EXT_texture_env_add extension mga_skipdma: Don't send any commands to the card mga_32bittextures: Store textures in a 32 bpp format mga_no_fast_path: Disable the fastpath mga_warp_tgza: Use only one warp pipe mga_nosetupdma: Disable setup dma What The Driver Can And Can't Do -------------------------------- - 3d cannot be accelerated if you are using a desktop set to 8 bpp. - It can utilize bus mastering DMA for commands. - If a backbuffer can't fit in offscreen memory on the card it will fall back to having the backbuffer in main memory if there is enough space in the DMA buffer. - It can use direct rendering if DMA is enabled and your application is running as root. (See glx/docs/direct.txt for details) --------- $Id: README.mga,v 1.2 2000/04/26 11:36:28 ehliar Exp $
