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List:       kde-kimageshop
Subject:    =?UTF-8?B?UmU6IFByb29mIG9mIGNvbmNlcHQgcGF0Y2ggZm9yIFdhc2ggTW9kZSBhcnRp?= =?UTF-8?B?ZmFjdHM=?=
From:       Paul Geraskin <paul_geraskin () mail ! ru>
Date:       2013-06-16 18:35:05
Message-ID: 1371407705.678847723 () f293 ! mail ! ru
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 Hi!

Going to test tomorrow morning. I'll contact you.

Thanks.

Воскресенье, 16 июня 2013, 18:42 +04:00 от Dmitry Kazakov \
<dimula73@gmail.com>:
> Hi!
> 
> One of the bugs I'm working on currently is Wash Mode bug, described by Paul in the \
> first part of the bug [0].  
> Technical part:
> 
> Actually, this is not a bug, but a flaw of the composition formula we use in \
> ALPHA_DARKEN composite op. So to fix this bug, we need to change the formula (with \
> all the obvious consequences). The problem is this formula is not commutative, that \
> is the order of application of dabs changes the result dramatically. 
> The patch:
> 
> In the attachment you can find a patch which (should) fix this bug. It would be \
> nice if someone tested it and looked for some non-obvious regressions in painting \
> it introduces. 
> This patch implements:
> 1) Fixes the artifacts on the tail of the Wash Mode stroke
> 
> This patch breaks (known issues):
> 1) Flow option doesn't work (it is simply disabled)
> 2) It fixes the bug for a Pixel Brush only
> 3) It disables vector optimizations
> 
> 
> [0] -  https://bugs.kde.org/show_bug.cgi?id=320651
> 
> -- 
> Dmitry Kazakov

-- 
Paul Geraskin

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<HTML><BODY>Hi!<br><br>Going to test tomorrow morning. I'll contact \
you.<br><br>Thanks.<br><br><br>Воскресенье, 16 июня 2013, 18:42 +04:00 \
от Dmitry Kazakov &lt;dimula73@gmail.com&gt;:<br> <blockquote \
style="border-left:1px solid #0857A6; margin:10px; padding:0 0 0 10px;" \
class="mailru-blockquote">  <div id="">

<div class="js-helper js-readmsg-msg">
	<style type="text/css"></style>
	<div id="style_13713937400000000238" class="mr_read__body">
		<base target="_self" href="https://e.mail.ru/">

			<div id="style_13713937400000000238_BODY">Hi!<br><br>One of the bugs I'm working \
on currently is Wash Mode bug, described by Paul in the first part of the bug [0]. \
<br><br>Technical part:<br><br>Actually, this is not a bug, but a flaw of the \
composition formula we use in ALPHA_DARKEN composite op. So to fix this bug, we need \
to change the formula (with all the obvious consequences). The problem is this \
formula is not commutative, that is the order of application of dabs changes the \
result dramatically.<br> <br>The patch:<br><br>In the attachment you can find a patch \
which (should) fix this bug. It would be nice if someone tested it and looked for \
some non-obvious regressions in painting it introduces.<br><br>This patch \
implements:<br> 1) Fixes the artifacts on the tail of the Wash Mode \
stroke<br><br>This patch breaks (known issues):<br>1) Flow option doesn't work (it is \
simply disabled)<br>2) It fixes the bug for a Pixel Brush only<br>3) It disables \
vector optimizations<br> <br clear="all"><br>[0] - <a \
href="https://bugs.kde.org/show_bug.cgi?id=320651" \
target="_blank">https://bugs.kde.org/show_bug.cgi?id=320651</a><br><br>-- <br>Dmitry \
Kazakov

</div>

		<base target="_self" href="https://e.mail.ru/">
	</div>

</div>

</div>
</blockquote>
<br>
<br>-- <br>Paul Geraskin<br></BODY></HTML>

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