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Re: Draw::DrawImageOp optimization bug [message #19406 is a reply to message #19404]

Mon, 01 December 2008 13:12

mirek is currently offline

mirek
Messages: 13975
Registered: November 2005

Ultimate Member

Tom1 wrote on Mon, 01 December 2008 06:49

Of course, if drawing the optimized image starts with a single white DrawRectOp() covering the entire image rect, and then continues by adding the non-white sub-images on top of that should work... but only for OPAQUE pictures.

I would not hope too much that any existing printer driver can really handle non-OPAQUE picture, meanwhile, it should be simple to avoid optimization for them too...

Quote:

BTW, it is interesting that those rects are being painted using PatBlt (basically, a pixel-pushing api).

Correct, but: PatBlt uses current brush just like Rectangle and other vector functions with fill capability, so the color mapping mechanism must be the same.
[/quote]

Yes, likely yes.

Quote:

BTW: Is PatBlt more efficient that Rectangle?

I do not believe so. But AFAIK, they are rounded to physical resolution differently. In fact, that is most likely the source of our problem.

Mirek

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[Message index]

		Draw::DrawImageOp optimization bug By: Tom1 on Thu, 27 November 2008 13:52
		Re: Draw::DrawImageOp optimization bug By: mirek on Fri, 28 November 2008 08:56
		Re: Draw::DrawImageOp optimization bug By: Tom1 on Fri, 28 November 2008 10:23
		Re: Draw::DrawImageOp optimization bug By: rylek on Fri, 28 November 2008 13:15
		Re: Draw::DrawImageOp optimization bug By: mirek on Fri, 28 November 2008 13:27
		Re: Draw::DrawImageOp optimization bug By: mirek on Fri, 28 November 2008 13:29
		Re: Draw::DrawImageOp optimization bug By: Tom1 on Fri, 28 November 2008 13:54
		Re: Draw::DrawImageOp optimization bug By: mirek on Fri, 28 November 2008 14:27
		Re: Draw::DrawImageOp optimization bug By: mirek on Fri, 28 November 2008 21:02
		Re: Draw::DrawImageOp optimization bug By: mirek on Sat, 29 November 2008 12:54
		Re: Draw::DrawImageOp optimization bug By: Tom1 on Mon, 01 December 2008 11:25
		Re: Draw::DrawImageOp optimization bug By: mirek on Mon, 01 December 2008 12:12
		Re: Draw::DrawImageOp optimization bug By: Tom1 on Mon, 01 December 2008 12:49
		Re: Draw::DrawImageOp optimization bug By: mirek on Mon, 01 December 2008 12:57
		Re: Draw::DrawImageOp optimization bug By: Tom1 on Mon, 01 December 2008 13:50
		Re: Draw::DrawImageOp optimization bug By: mirek on Mon, 01 December 2008 14:25
		Re: Draw::DrawImageOp optimization bug By: mirek on Mon, 01 December 2008 13:12
		Re: Draw::DrawImageOp optimization bug By: mirek on Mon, 01 December 2008 12:41
		Re: Draw::DrawImageOp optimization bug By: mirek on Mon, 01 December 2008 13:14
		Re: Draw::DrawImageOp optimization bug By: Tom1 on Mon, 01 December 2008 14:37
		Re: Draw::DrawImageOp optimization bug By: mirek on Mon, 01 December 2008 14:52
		Re: Draw::DrawImageOp optimization bug By: mirek on Tue, 02 December 2008 19:15
		Re: Draw::DrawImageOp optimization bug By: Tom1 on Tue, 02 December 2008 21:16
		Re: Draw::DrawImageOp optimization bug By: mirek on Tue, 02 December 2008 21:46
		Re: Draw::DrawImageOp optimization bug By: mirek on Wed, 03 December 2008 12:14
		Re: Draw::DrawImageOp optimization bug By: Tom1 on Wed, 03 December 2008 15:03
		Re: Draw::DrawImageOp optimization bug By: mirek on Wed, 03 December 2008 15:21
		Re: Draw::DrawImageOp optimization bug By: Tom1 on Wed, 03 December 2008 15:36
		Re: Draw::DrawImageOp optimization bug By: Tom1 on Wed, 03 December 2008 17:11
		Re: Draw::DrawImageOp optimization bug By: mirek on Thu, 04 December 2008 10:22
		Re: Draw::DrawImageOp optimization bug By: Tom1 on Thu, 04 December 2008 11:07
		Re: Draw::DrawImageOp optimization bug By: mirek on Thu, 04 December 2008 11:36
		Re: Draw::DrawImageOp optimization bug By: Tom1 on Thu, 04 December 2008 12:09
		Re: Draw::DrawImageOp optimization bug By: mirek on Thu, 04 December 2008 12:36
		Re: Draw::DrawImageOp optimization bug By: Tom1 on Thu, 04 December 2008 13:09
		Re: Draw::DrawImageOp optimization bug By: mirek on Thu, 04 December 2008 15:53
		Re: Draw::DrawImageOp optimization bug By: Tom1 on Thu, 04 December 2008 16:07
		Re: Draw::DrawImageOp optimization bug By: mirek on Thu, 04 December 2008 17:46
		Re: Draw::DrawImageOp optimization bug By: Tom1 on Fri, 05 December 2008 11:05
		Re: Draw::DrawImageOp optimization bug By: mirek on Fri, 05 December 2008 11:20
		Re: Draw::DrawImageOp optimization bug By: Tom1 on Fri, 05 December 2008 12:13
		Re: Draw::DrawImageOp optimization bug By: mirek on Thu, 04 December 2008 10:19

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