harmony-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Igor V. Stolyarov (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-4801) [classlib][awt] Performance improvement for java.awt.Color.ColorPaintContext
Date Mon, 17 Sep 2007 07:14:32 GMT
[classlib][awt] Performance improvement for java.awt.Color.ColorPaintContext
----------------------------------------------------------------------------

                 Key: HARMONY-4801
                 URL: https://issues.apache.org/jira/browse/HARMONY-4801
             Project: Harmony
          Issue Type: Improvement
            Reporter: Igor V. Stolyarov


I would like suggest performance improvement for java.awt.Color.ColorPaintContext. According
to Spec in method createPaintContext of Paint interface ColorModel parameter is used only
as hint. If the application does not prefer a specific ColorModel, the null ColorModel argument
will give the Paint implementation full leeway in using the most efficient ColorModel it prefers
for its raster processing. Now Harmony create defaultRGB ColorModel which is not convenient
in most cases. I suggest using defaultRGB ColorModel only for Colors which have tansparency
different from OPAQUE and DirectColorModel(24, 0xFF0000, 0xFF00, 0xFF) for OPAQUE colors.
It should give significant boost because processing of Opaque Images more then 3 times faster
then Transparen Images.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message