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Re: Paint problems when using transparency [message #41504 is a reply to message #41503]

Mon, 23 December 2013 14:47

mirek is currently offline

mirek
Messages: 14262
Registered: November 2005

Ultimate Member

Subpixel issue: subpixel is kind of problem when the canvas is not opaque. It is quite evident from the basis of subpixel rendering: each subpixel has got its individual alpha - but this alpha is impossible to store anywhere, as we only have single alpha value for 3 subpixels... Anyway, Painter resorted to not quite correct fallback there, so I have fixed it to at least look ok (but the result is normal rendering, not subpixel).

Well, everything works for me now with color problems.. but I have to admit to perform some fixes in Painter (fixed some rounding error issue).

I am posting my version of testcase. Please, sync svn and check my testcase, then perhaps zip and send yours if you still experience problems.

Mirek

Attachment: Test_painting.7z
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[Message index]

		Paint problems when using transparency By: Didier on Thu, 19 December 2013 23:57
		Re: Paint problems when using transparency By: mirek on Mon, 23 December 2013 11:55
		Re: Paint problems when using transparency By: Didier on Mon, 23 December 2013 14:24
		Re: Paint problems when using transparency By: mirek on Mon, 23 December 2013 14:47
		Re: Paint problems when using transparency By: mirek on Mon, 23 December 2013 17:09
		Re: Paint problems when using transparency By: Didier on Mon, 23 December 2013 23:30
		Re: Paint problems when using transparency By: mirek on Tue, 24 December 2013 09:42
		Re: Paint problems when using transparency By: Didier on Tue, 24 December 2013 12:12
		Re: Paint problems when using transparency By: mirek on Fri, 05 June 2020 11:56
		Re: Paint problems when using transparency By: Didier on Fri, 05 June 2020 17:08
		Re: Paint problems when using transparency By: Didier on Fri, 05 June 2020 19:48
		Re: Paint problems when using transparency By: Didier on Fri, 05 June 2020 23:31
		Re: Paint problems when using transparency By: Didier on Fri, 05 June 2020 23:34
		Re: Paint problems when using transparency By: mirek on Sat, 06 June 2020 10:19
		Re: Paint problems when using transparency By: mirek on Sat, 06 June 2020 10:31
		Re: Paint problems when using transparency By: Didier on Sat, 06 June 2020 21:12

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