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 3dfx Hardware & Software
 Voodoo4/5 Discussions
 ATTN: Amigamerlin & Koolsmokey - Color Banding V6K
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Crash
Novice

22 Posts

Posted - 29/09/2003 :  00:40:33  Show Profile  Visit Crash's Homepage  Reply with Quote
Greetings,

I was wondering if you would consider a fix for the Windows98 drivers that would attend to the Voodoo5 6000 color banding issue that occurs in 32-Bit color mode, as described in the article from Colorless:

http://www.users.on.net/triforce/illuminate/v56kprobs.html

I personally use Windows98 for my V6K since in WindowsXP the refresh rate gets stuck at 60hz, none of my gameport controllers can work outside of 98, and some games simply won't even begin to install in XP.

Thank you very much for your consideration.

Aloha,

Crash!

Glide
Web Admin

Napoli


24417 Posts

Posted - 29/09/2003 :  12:00:45  Show Profile  Visit Glide's Homepage  Reply with Quote
Tnx for your contribution...this message is well visible

Bye bye

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hanksemenec
Initiate

USA


71 Posts

Posted - 03/10/2003 :  07:54:47  Show Profile  Visit hanksemenec's Homepage  Reply with Quote
Hi,

The color banding issue is well known. The problem is that V5 6000 uses analog SLI and it was necessary to divide the final RGB result by 2 in 4xFSAA. If the division was not done then the final RGB out put would be 1.4V, double the allowed .7Volts.

Divide by 2 in binary is shift right, so your 8 bit number becomes 7 bits only.
b'1111 1111 becomes b'0111 1111. If you load the traditional 8 bit Gamma table you will run into trouble. The Gamma table has to be computed for 7 bits with 8th bit MSB ignored.

I believve the problem was fixed already in AM 3.0

Hank
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amp_man
Experienced

545 Posts

Posted - 03/10/2003 :  21:09:57  Show Profile  Visit amp_man's Homepage  Reply with Quote
hank are you speaking of AM 3.0 for win9x, which hasn't been released yet? if not, note that he's using windows 98se.
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koolsmoky
Moderator

101 Posts

Posted - 05/10/2003 :  02:40:10  Show Profile  Visit koolsmoky's Homepage  Reply with Quote
The workaround is in the AM3.0 win2k/xp driver set for D3D and Glide. OpenGL gets fixed for free because it runs on top of Glide3x.

Copy the AM3.0 Glide files to Win9x for the benefits.

KoolSmoky
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Crash
Novice

22 Posts

Posted - 08/10/2003 :  22:17:53  Show Profile  Visit Crash's Homepage  Reply with Quote
Greetings,

I hope that you will pardon my naivete, but which Glide files will I need to copy from the XP install onto the 98 system?

Thanks!
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amp_man
Experienced

545 Posts

Posted - 11/10/2003 :  04:00:08  Show Profile  Visit amp_man's Homepage  Reply with Quote
before you set them up, copy glide2x.dll and glide3x.dll from the driver2k directory. i cannot tell you how to do it without reinstalling, as my voodoo is taking an extended vacation

when the sun goes down, the music turns up...

Windows XP Pro|Athlon XP 1800+|GeForce2(temporarily, for compatibility purposes)|MSI K7T266-A|768MB DDR 2700 RAM|SonicEdge 5.1 Sound Card
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qrazi
Average

Netherlands
214 Posts

Posted - 11/10/2003 :  11:04:29  Show Profile  Visit qrazi's Homepage  Reply with Quote
you can just replace your current glide2x.dll and glide3x.dll files with the ones in the amigamerlin 3.0 driver pack. back them up to be save...

ECS K7s5a@ 147 MHz, Athlon XP 1600+@1825+, Voodoo5 5500 @166 MHz
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