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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hello Laurent<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Yes.. I wished to know the performance improvements between the versions of Marlin Renderer 0.7.5 and 0.7.4.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks for the explanation. It helps.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thank you<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Have a good day<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Prahalad N.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> Laurent Bourgès [mailto:bourges.laurent@gmail.com] <br><b>Sent:</b> Thursday, May 11, 2017 5:40 PM<br><b>To:</b> Prahalad Kumar Narayanan<br><b>Cc:</b> Philip Race; Jim Graham; 2d-dev@openjdk.java.net<br><b>Subject:</b> Re: [OpenJDK 2D-Dev] [10] RFR JDK-8180055: Upgrade the Marlin renderer in Java2D<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal style='margin-bottom:12.0pt'>Hi Prahalad,<o:p></o:p></p></div><div><div><div><div><p class=MsoNormal>2017-05-11 11:46 GMT+02:00 Prahalad Kumar Narayanan <<a href="mailto:prahalad.kumar.narayanan@oracle.com" target="_blank">prahalad.kumar.narayanan@oracle.com</a>>:<o:p></o:p></p><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><p class=MsoNormal>Hello Lauren<br><br>+1 for the code changes.<br><br>Without going through the specifics, I imported the code & checked for successful build.<br>The build succeeded with the patch from your latest webrev link.<o:p></o:p></p></blockquote><div><p class=MsoNormal style='margin-bottom:12.0pt'><br>Thanks for the review.<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><p class=MsoNormal><br>Just for knowledge: You would have checked for the performance improvement with your improved Marlin renderer.<br>Can you share your insights and any specific use-cases that have benefited ?<o:p></o:p></p></blockquote><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'>Could you be more precise ? Do you mean the performance improvements between Marlin 0.7.5 and 0.7.4 ? <br>or in general by the Marlin renderer vs Pisces ...<o:p></o:p></p></div><div><p class=MsoNormal>In Marlin 0.7.5, I modified several aspects:<o:p></o:p></p></div><div><p class=MsoNormal>- double-precision (double) vs single-precision (float): ~ equivalent performance<o:p></o:p></p></div><div><p class=MsoNormal>- tile fills optimization: it benefits to large shapes (almost empty / full) like large circles or disks: up to 10% faster for large shapes measured with my MapBench tool (ellipse-fill commands from radius = 1 to 1000)<o:p></o:p></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'>- higher precision for curve / quad approximation: it impacts performance as more segments are generated, sorted and rasterized ~ 10% globally in my MapBench runs.<o:p></o:p></p></div><div><p class=MsoNormal>I could provide some results if you want.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Finally I am going to work again on Java2D pipeline optimizations: avoid Path2D iterators, TexturePaint / CompositePaint (array / raster cache + loops)...<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>PS: I still plan one day to implement another approach to compute pixel coverage (exact) like agg / libart that could improve both quality and performance a bit (1 single scanline with more maths) but no more 8 scanlines.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Regards,<o:p></o:p></p></div><div><p class=MsoNormal>Laurent<o:p></o:p></p></div></div></div></div></div></div></div></body></html>