<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Nesting backgrounds with identical RGBA causes wrong colours to be drawn at innermost level" href="https://bugs.freedesktop.org/show_bug.cgi?id=99233#c6">Comment # 6</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Nesting backgrounds with identical RGBA causes wrong colours to be drawn at innermost level" href="https://bugs.freedesktop.org/show_bug.cgi?id=99233">bug 99233</a> from <a class="email" href="mailto:psychon@znc.in" title="Uli Schlachter <psychon@znc.in>"> Uli Schlachter</a> <pre>I took a brief look with xtrace: Cairo "compresses" all the rectangles into a single FillRectangles request (first one draws the white background, second one 'the rest') 000:<:001c: 24: RENDER-Request(139,4): CreatePicture pid=0x02800005 drawable=0x02800001 format=0x0000002a values={poly-mode=Imprecise(0x01)} 000:<:001d: 28: RENDER-Request(139,26): FillRectangles op=Src(0x01) dst=0x02800005 red=0xffff green=0xffff blue=0xffff alpha=0xffff rects={x=0 y=0 w=100 h=100}; 000:<:001e: 52: RENDER-Request(139,26): FillRectangles op=Over(0x03) dst=0x02800005 red=0x0000 green=0x0000 blue=0x0000 alpha=0x3333 rects={x=10 y=10 w=80 h=80},{x=20 y=20 w=60 h=60},{x=30 y=30 w=40 h=40},{x=40 y=40 w=20 h=20}; 000:>:001e: Event KeyPress(2) keycode=0x18 time=0x011b6157 root=0x00000117 event=0x02800001 child=None(0x00000000) root-x=967 root-y=785 event-x=966 event-y=744 state=Mod2 same-screen=true(0x01) Since this does not happen in Xephyr, something in the X server is mis-optimising this case, I guess. @Chris: Now is your turn. I always fail to find the broken things in Xorg.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>