Re: Fast Screen update
Re: Fast Screen update
- Subject: Re: Fast Screen update
- From: John Stiles <email@hidden>
- Date: Mon, 15 Nov 2004 08:54:45 -0800
You could use OpenGL. It would be much faster.
If you require 10.4, you could use CoreImage. That would also be faster.
Another idea for performance: make a borderless window that's filled with solid white. Position it directly above your image. Now change the alpha of this window corresponding to how bright you want the picture to be. (If you want to turn the brightness DOWN, then fill the window with black instead of white). This is kind of cheesy but is less work than switching your entire app to use OpenGL.
On Nov 15, 2004, at 2:32 AM, klee04 wrote:
<x-tad-bigger>Hi,</x-tad-bigger>
<x-tad-bigger> </x-tad-bigger>
<x-tad-bigger>Is there a way to update changes to image faster on the screen? I tried to change brightness of a 2 MB photo image, and it is too slow. I, however, tried another program, and it changes brightness instantaneously. Any help would be greatly appreciated.</x-tad-bigger>
<x-tad-bigger> </x-tad-bigger>
<x-tad-bigger>Thanks,</x-tad-bigger>
<x-tad-bigger> </x-tad-bigger>
<x-tad-bigger>Kanghoon Lee.</x-tad-bigger>
<x-tad-bigger> </x-tad-bigger>
<x-tad-bigger> </x-tad-bigger>
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Cocoa-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Cocoa-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden