Re: OpenGL in a big window
Re: OpenGL in a big window
- Subject: Re: OpenGL in a big window
- From: "Gerriet M. Denkmann" <email@hidden>
- Date: Wed, 8 Oct 2003 23:11:20 +0200
On Mittwoch, Oktober 8, 2003, at 01:49 Uhr, Sscar Morales Vivs wrote:
I'm going out on a limb here, but it sounds as you hit some graphic
card limit and went into software rendering mode.
Check it out in other macs with different graphics cards if possible
at all.
Probably you are right. The problem occurs when the window gets big ( >
1 Mio Pixels ? ), and double buffering is on, colour buffer is 32 bit
and depth buffer is also on (16 bit)
This makes 12 MB (for 1 Mio pixels) and the graphic card has 16 MB.
If 4 MB is used for some other purposes, then increasing the window
size above 1 Mio pixels would exceed the limit.
But no big problem - I got rid of the depth buffer, and now all is fine.
On 8 Oct 2003, at 00:26, Gerriet M. Denkmann wrote:
I have a window with a NSOpenGLView with some moving things.
The Window Manager takes about 25% CPU when the window is rather big.
But when I make the window just a tiny little bit bigger, then
suddenly the Window Manager takes 95% of the CPU and the drawing gets
real slow indeed.
Why is this so?
Gerriet.
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/*
Oscar Morales Vivs
Eternal Computer Science Student. Master of C++ Templates. Cocoa Nut.
Computer Graphics Scientiam Lumina. UI Guru in Training. Dabbler in
all things CS and most which are not.
Web stuff: http://homepage.mac.com/oscarmv/index.html
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