From:	"Gary Smith" <gary DOT smith3 AT virgin DOT net>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Help. Winallegro
Date:	Sat, 13 Feb 1999 22:47:36 -0000
Organization:	Virgin News Service
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References:	<7a4ma6$kv4$1 AT nclient3-gui DOT server DOT virgin DOT net>
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To:	djgpp AT delorie DOT com
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By changing the colour depth to 15 bit, the program runs at the correct
frame rate.

If I set the colour depth to 16bit, and then call  'set_gfx_mode', this
causes the program to crash.  How can I tell if the colour depth that is
selected will work on someone elses computer.

Gary Smith






Gary Smith wrote in message <7a4ma6$kv4$1 AT nclient3-gui DOT server DOT virgin DOT net>...
>Help.
>
>I have been working on a program using Winallegro as the graphics library.
>
>I have just upgraded my graphics card from a Matrox Mystique, 4MB to an ATI
>Rage LT PRO, 8MB.
>
>With the Matrox card, I could run the program in 15bit, 16bit, 24bit & 32
>bit at a reasonable frame rate.   With the ATI card, the program now runs
at
>approximately 10% of its previous speed.
>
>The ATI card should be faster than the Matrox card.
>
>I have tried setting various colour depths with no luck.
>
>Any suggestions.
>
>Gary Smith
>
>
>
>

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