I am sorry to ask this, but I am
new to Mac Programming. Do you have to
switch entire application to use OpenGL? Or is there a routine to access specific
OpenGL routines?
Thanks
Kanghoon Lee
From:
John Stiles [mailto:email@hidden]
Sent: Tuesday, November 16, 2004
1:55 AM
To: klee04
Cc: email@hidden
Subject: Re: Fast Screen update
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:
Hi,
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.
Thanks,
Kanghoon Lee.
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