<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Very slow performance when rendering scenes with transparency, probably caused by excessive copying (intel_miptree_map())" href="https://bugs.freedesktop.org/show_bug.cgi?id=101592#c3">Comment # 3</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Very slow performance when rendering scenes with transparency, probably caused by excessive copying (intel_miptree_map())" href="https://bugs.freedesktop.org/show_bug.cgi?id=101592">bug 101592</a> from <a class="email" href="mailto:sdh4@iastate.edu" title="Steve Holland <sdh4@iastate.edu>"> Steve Holland</a> <pre>Comparison system running exactly the same application, but running Fedora 25 mesa-dri-drivers-13.0.4-3.fc25 and older Intel graphics "Haswell-ULT Integrated Graphics Controller (rev 0b)" is a bit sluggish (say ~3 fps) at a particular rendering operation (transparent text over transparent image). Newer system (Mesa 17.1.3, Kaby Lake HD Graphics 620, Fedora 26 beta) on the same operation is 0.3 fps. Same operations with software rendering forced (by LIBGL_ALWAYS_SOFTWARE=1) are 10+fps on both platforms Just rendering the image is fast in all cases, transparent or not. Overlaying the text character-by-character with glutBitmapCharacter() seems to be what is slowing things down.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>