<div dir="ltr"><p style="box-sizing:border-box;margin:0px;padding:0px;font-family:-apple-system,sans-serif;font-size:14px;white-space:pre-wrap"><font color="#000000">Hello all</font></p><p class="gmail-InterlineFormatApplier_fontSize_" style="box-sizing:border-box;margin:0px;padding:0px;font-family:-apple-system,sans-serif;font-size:14px;white-space:pre-wrap"><font color="#000000"><br style="box-sizing:border-box"></font></p><p class="gmail-" style="box-sizing:border-box;margin:0px;padding:0px;font-family:-apple-system,sans-serif;font-size:14px;white-space:pre-wrap"><font color="#000000">Apologies if this has been discussed before. I’d like to create the appearance of motion blur by drawing multiple Cairo shapes at opacity of 1.0 / [number of motion blur samples]. In openGL or After Effects I would set the blending to alpha add so that the final result retains its original opacity. Is this possible in Cairo? I couldn’t find an equivalent compositing operator. Keen to hear any workarounds or suggestions.</font></p><p class="gmail-" style="box-sizing:border-box;margin:0px;padding:0px;font-family:-apple-system,sans-serif;font-size:14px;white-space:pre-wrap"><font color="#000000"><br></font></p><p class="gmail-" style="box-sizing:border-box;margin:0px;padding:0px;font-family:-apple-system,sans-serif;font-size:14px;white-space:pre-wrap"><font color="#000000">Regards,</font></p><p class="gmail-" style="box-sizing:border-box;margin:0px;padding:0px;font-family:-apple-system,sans-serif;font-size:14px;white-space:pre-wrap"><font color="#000000"><br></font></p><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><img src="https://images.squarespace-cdn.com/content/598944b3f5e231b64a518aa6/1590476442256-NPPMPWDPNITW8O0MFJDS/Logo+signature+2.png" width="200" height="43"><br></div><div dir="ltr"><b>James Whiffin</b> | <b>Developer</b><table cellpadding="0" cellspacing="0" border="0" style="background:none;margin:0px;padding:0px;border:0px;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:proxima-nova,"Helvetica Neue",Helvetica,Arial,sans-serif;vertical-align:baseline;border-collapse:collapse;border-spacing:0px;color:rgb(85,85,85)"><tbody style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:inherit;line-height:inherit;font-family:inherit;vertical-align:baseline"><tr style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:inherit;line-height:inherit;font-family:inherit;vertical-align:baseline"></tr></tbody></table><a href="http://www.plugineverything.com/" target="_blank">www.plugineverything.com</a><br><br></div></div></div></div></div></div></div></div></div></div>