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Fixed rounding problem in subpixel rendering

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git-svn-id: svn://ultimatepp.org/upp/trunk@899 f0d560ea-af0d-0410-9eb7-867de7ffcac7
This commit is contained in:
cxl 2009-02-23 17:49:45 +00:00
parent 398f9889c1
commit 1fd4a55425
6 changed files with 48 additions and 39 deletions
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17
uppsrc/Painter/srcimp.tpp/SubpixelFiller$en-us.tpp Normal file
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@ -0,0 +1,17 @@
topic "";
[ $$0,0#00000000000000000000000000000000:Default]
[H6;0 $$1,0#05600065144404261032431302351956:begin]
[i448;a25;kKO9;2 $$2,0#37138531426314131252341829483370:codeitem]
[l288;2 $$3,0#27521748481378242620020725143825:desc]
[0 $$4,0#96390100711032703541132217272105:end]
[{_}%EN-US
[s1;%- &]
[s2;:SubpixelFiller`:`:Write`(int`):%- [@(0.0.255) void]_[* Write]([@(0.0.255) int]_[*@3 len])
&]
[s3; This function flushes the content of filtered subpixel buffer.&]
[s0; Important note: due to rounding errors during filtering, sometimes
the subpixel value can be 257. This is remedied by using 257
instead of 256 in the pixel blending command.&]
[s0; &]
[s4; &]
[s0; ]