56 lines
1.9 KiB
Plaintext
56 lines
1.9 KiB
Plaintext
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______ ____ ______ _____ ______
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| ____| | _ \| ____| / / _ \| ____|
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| |__ _ __ ___ ___| |_) | |__ / / |_| | |__
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| __| '__/ _ \/ _ \ _ <| __| / /| _ | __|
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| | | | | __/ __/ |_) | |____ / / | | | | |
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|_| |_| \___|\___|____/|______/_/ |_| |_|_|
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Matrox driver implementation notes.
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This driver supports the Millenium, Mystique, and Millenium II (both PCI
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and AGP) cards.
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It supports color depths of 8, 15, 16, and 32 bits per pixel in both
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linear and banked modes, and should be able to use all the resolutions
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provided by your underlying VESA driver. It provides accelerated versions
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of the VBE/AF functions:
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DrawScan()
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DrawPattScan()
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DrawColorPattScan()
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DrawRect()
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DrawPattRect()
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DrawColorPattRect()
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DrawLine()
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DrawTrap()
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PutMonoImage()
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BitBlt()
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BitBltSys()
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SrcTransBlt() - Mystique only
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SrcTransBltSys() - Mystique only
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This driver supports the FreeBE/AF extension mechanism for enabling true
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protected mode access to video memory. Uncomment the definition of
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NO_HWPTR at the top of driver.c if you want to return to the standard
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nearptr memory access.
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Masked blitting from system memory is only enabled in 256 color modes,
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because in truecolor resolutions it is actually faster to do the masking
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checks in software (the increased pixel size means that too much time is
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wasted copying zeros to the card, so it is more efficient for the cpu to
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test and discard these).
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Hardware cursors are supported, but only on the Mystique. The Millenium
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does them quite differently, and I have no way to test any code for it.
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This code is not portable to any platforms other than DOS+DPMI, because
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it uses VESA calls to set the initial video mode.
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By Shawn Hargreaves
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shawn@talula.demon.co.uk
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