pouët.net

Wachu information 1 glöps

• general:
• level: user
• personal:
• first name: Tomasz
• last name: Wachowiak

• demo Atari STe Back to oldschool by Mystic Bytes [web]
• Thank for all responses.
  
  @Cyg - all effects expect last runs in 50 frames, please press Ctrl and you'll see processor usage. :)
  
  @Heaven and Ham - proper mirror is easy to implement, but both methods consume processor time - blitter about 10%, timer b with address switching in each line of bottom border also takes a few % and it's quite sensitive to blitter usage (massive in this demo). 10% CPU time equals 20% smaller polygons, it's unacceptable - so we decided to switch on quite nice pseudo-mirror which takes 0% CPU time (!!!) - thanks to Cyprian idea and code.
  
  More technical information you will find on info page: http://www.pouet.net/prod_nfo.php?which=68506
• isokadded on the 2016-11-17 09:46:54
• demo Atari STe Back to oldschool by Mystic Bytes [web]
• Quote:

  ...the polygon drawing does the occaisional wordfilling outside the polygon. It occurred on the bigscreen and on my hardware as well.

  
  
  Hello spkr. I know that issue, it happens sometimes when I compute masks/offsets for long and very thin polygons (1-2 pixels wide). I invented absolutely new way to calculate masks/offsets (no more addx, I totaly omit coords calculations and go straight to masks/offsets computations), but it still needs some improvements. Btw I used blitter to do that; all process takes only 16 cycles (m68k) per offset/mask pair.
• rulezadded on the 2016-11-16 22:15:49