U++ forum: Welcome to the forum

Search on this site

Search in forums

Home » U++ Library support » Draw, Display, Images, Bitmaps, Icons » Correct buffering technique?

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Correct buffering technique? [message #10581]

Tue, 17 July 2007 17:10

mrjt
Messages: 705
Registered: March 2007
Location: London

Contributor

I have several ctrls with slow Paint functions that display complex real-time data. Becuase certain actions can cause lots of display refreshes (like dragging a window) I would like to maintain a buffer to reduce CPU load between refreshes:

		if (bufferdirty) {
			buffer.Create(GetView().Size());
			BufferPaint(buffer);
			bufferdirty = false;
		}
		buffer.Put(w, 0, 0);

buffer is a BackDraw object (I was going to use ImageDraw before I saw BackDraw). This seems to work OK, but is this the way to do it?

Cheers,
James

Report message to a moderator

Re: Correct buffering technique? [message #10601 is a reply to message #10581]

Wed, 18 July 2007 09:03

mirek
Messages: 13891
Registered: November 2005

Ultimate Member

mrjt wrote on Tue, 17 July 2007 11:10

		if (bufferdirty) {
			buffer.Create(GetView().Size());
			BufferPaint(buffer);
			bufferdirty = false;
		}
		buffer.Put(w, 0, 0);

buffer is a BackDraw object (I was going to use ImageDraw before I saw BackDraw). This seems to work OK, but is this the way to do it?

Cheers,
James

Yes, looks fine to me.

Mirek

Report message to a moderator

Previous Topic:	How to Draw into an existing image(buffer) ?
Next Topic:	Load truetype font from file?

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Mon May 29 23:47:06 CEST 2023

Total time taken to generate the page: 0.01441 seconds