greendog@max.physics.sunysb.edu (Michael D Fischer) (01/05/91)
Help! I'm trying to write a program that scrolls a text message across the bottom of a 4 bitplane hires-interlaced screen, and what I have been able to do is MUCH too slow! I am using ScrollRaster() of the graphics.library... I rewrote the C program in assembly to see if it would increase the speed much, and it didn't at all (I was still calling ScrollRaster() from the asm program). So, is there a faster way of scrolling a 30-pixel high horizontal strip of the screen? Any help would be GREATLY appreciated, even just pointers to where I can get example source code... Thanks in advance... Michael -- ------------------------------------------------------------------------- - Michael D. Fischer | greendog@max.physics.sunysb.edu - - S.U.N.Y. at Stony Brook | mfische@csserv1.ic.sunysb.edu - -------------------------------------------------------------------------
forgeas@swinjm.UUCP (Jean-Michel Forgeas) (01/06/91)
In article <1991Jan5.063714.25262@max.physics.sunysb.edu>, Michael D Fischer writes: > Help! I'm trying to write a program that scrolls a text message > across the bottom of a 4 bitplane hires-interlaced screen, and what > I have been able to do is MUCH too slow! I am using ScrollRaster() ScrollRaster() cares about RastPorts and layers, and if you don't have windows on your screen you can use BltBitMap() directly. -- \___/ Jean-Michel Forgeas \-/ cbmvax!cbmehq!cbmfra!swinjm!forgeas | The Software Winery -^- And, where is the universe ?