Re: [AD] al_put/draw_pixel() speed

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To: Coordination of admins/developers of the game programming library Allegro <alleg-developers@xxxxxxxxxx>
Subject: Re: [AD] al_put/draw_pixel() speed
From: Milan Mimica <milan.mimica@xxxxxxxxxx>
Date: Sat, 08 Aug 2009 10:43:36 +0200

Matthew Leverton wrote:


Using al_put_pixel() on exactly one pixel of a video bitmap drops my
framerate from 350 to 20. (Perhaps the documentation should substitute
"worthless" for "slow," heh.) But using al_draw_pixel() doesn't harm
the framerate at all, despite the manual saying it will. So why is it
so much faster than put_pixel?

The real question is, why does al_put_pixel() always perform locking, eventhough the GFX driver might support some kind of drawing to textures?


	

--
Milan Mimica
http://sparklet.sf.net

Follow-Ups:
- Re: [AD] al_put/draw_pixel() speed
  - From: Elias Pschernig
- Re: [AD] al_put/draw_pixel() speed
  - From: Matthew Leverton

References:
- [AD] al_put/draw_pixel() speed
  - From: Matthew Leverton

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