Messages in this thread | | | Date | Fri, 27 Mar 1998 17:59:01 +0100 (CET) | From | Geert Uytterhoeven <> | Subject | Re: GGI Project Unhappy On Linux |
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On Fri, 27 Mar 1998, Pavel Machek wrote: > > > > (Note BTW its arguable that soon not only text mode but all direct frame > > > > buffer access will go out of fashion. Its an expensive slowing item that > > > > adds cost and major complexity to the performance critical memory subsystem > > > > on the video card). > > > > > > Erk! So what happens to blitting images to the screen? > > > > Dear graphics controller, there is a nice pixmap in main memory at > > 0xD0A13C30, its 64x64 pixels square and in RGB888 format, please map it > > to the 8bit mode colours you are in and dither if neccessary. If you'd be > > kind enough to post me an interrupt when you've finished I'd be > > greatful > > Well, imagine putting 8x16 blocks on screen (letters). You got > interrupt for every character. That is not going to be too fast. (I > assume that current fbcon layer is not able to work with such > accelerated hw... :-( )
Yes it does! You have to provide your own putc routine. There's even a putcs routine for multiple characters since drawing single characters is very slow on some machines (e.g. on the Amiga).
Greetings,
Geert
-- Geert Uytterhoeven Geert.Uytterhoeven@cs.kuleuven.ac.be Wavelets, Linux/{m68k~Amiga,PPC~CHRP} http://www.cs.kuleuven.ac.be/~geert/ Department of Computer Science -- Katholieke Universiteit Leuven -- Belgium
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