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Re: High Performance Drawing [message #13328 is a reply to message #13316]

Tue, 01 January 2008 21:21

phirox
Messages: 49
Registered: December 2007

Member

Since I'm having a bit of the same problem, I tried out your testcase.

With some testing I figured out the problem lies in the draw.DrawImage part. I was wondering if there is some way to copy the imagebuffer from ImageDraw into the one of Draw. I've been spitting through the source a bit, but couldn't really find it.

This would really be cool as a feature though.

p.s.:

Quote:

Also, creating a buffer at every paint seems rather costly for large resolutions. Isn't there a way to keep a buffer pre-allocated and then obtain Image objects out of it with non-destructive copy?

With the virtual function Layout() you can make it so the ImageDraw only updates when your window resizes. I tried this out and it helps. But really not that much and far from noticable.

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[Message index]

		High Performance Drawing By: cbpporter on Sun, 16 December 2007 12:48
		Re: High Performance Drawing By: mirek on Sun, 16 December 2007 23:15
		Re: High Performance Drawing By: cbpporter on Mon, 17 December 2007 01:47
		Re: High Performance Drawing By: mirek on Mon, 17 December 2007 14:47
		Re: High Performance Drawing By: cbpporter on Tue, 25 December 2007 13:02
		Re: High Performance Drawing By: mirek on Wed, 26 December 2007 14:16
		Re: High Performance Drawing By: cbpporter on Wed, 26 December 2007 17:01
		Re: High Performance Drawing By: mirek on Tue, 01 January 2008 10:54
		Re: High Performance Drawing By: phirox on Tue, 01 January 2008 21:21
		Re: High Performance Drawing By: phirox on Tue, 01 January 2008 23:54
		Re: High Performance Drawing By: cbpporter on Wed, 02 January 2008 18:11
		Re: High Performance Drawing By: mirek on Wed, 02 January 2008 22:00
		Re: High Performance Drawing By: phirox on Sat, 05 January 2008 19:55
		Re: High Performance Drawing By: mirek on Sun, 06 January 2008 08:54
		Re: High Performance Drawing By: cbpporter on Wed, 23 January 2008 15:06
		Re: High Performance Drawing By: cbpporter on Wed, 23 January 2008 16:56
		Re: High Performance Drawing By: mirek on Wed, 23 January 2008 17:01
		Re: High Performance Drawing By: cbpporter on Wed, 23 January 2008 17:10
		Re: High Performance Drawing By: cbpporter on Fri, 01 February 2008 11:02
		Re: High Performance Drawing By: cbpporter on Fri, 01 February 2008 16:27

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