Re: Triangle performance problem

Subject: Re: Triangle performance problem

From: Space Ship Traveller <email@hidden>

Date: Fri, 22 May 2009 02:50:23 +1200

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The CoreVideo display link takes care of this.

CV display link is a high priority notification/callback. It tells you when a frame is required. Therefore you can disable vsync and use the display link. This way, you can more efficiently use time for other purposes, because when enabling vsync you might spend a significant amount of time in your buffer flip, until the event has actually occurred.

Actually regarding napping, I think the modern intel processors can nap to save power. I remember reading about it somewhere.

Thank,

Samuel

On 22/05/2009, at 1:16 AM, Nicolas Goy wrote:

(The "Atlantis" app on a modern CPU/GPU runs over 2000 fps, and it makes tons and tons of immediate mode calls.) Much better to do something else instead, or do nothing and let the processor nap (or check your email).

A processor can nop but never nap!

About the 60 FPS thing, are you sure you don't have vsync enabled somehow? Because this is exactly the behaviour you will get.

--
Nicolas Goy
Crazy Programmer and Optimization Bear

http://goyman.com
http://kuon.goyman.com

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References:

>Triangle performance problem (From: Space Ship Traveller <email@hidden>)

>Re: Triangle performance problem (From: Steven Canfield <email@hidden>)

>Re: Triangle performance problem (From: Space Ship Traveller <email@hidden>)

>Re: Triangle performance problem (From: Paul Sargent <email@hidden>)

>Re: Triangle performance problem (From: Space Ship Traveller <email@hidden>)

>Re: Triangle performance problem (From: Richard Schreyer <email@hidden>)

>Re: Triangle performance problem (From: Space Ship Traveller <email@hidden>)

>Re: Triangle performance problem (From: Kent Miller <email@hidden>)

>Re: Triangle performance problem (From: Nicolas Goy <email@hidden>)