<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Pixelated shadow in Compiz" href="https://bugs.freedesktop.org/show_bug.cgi?id=95091#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Pixelated shadow in Compiz" href="https://bugs.freedesktop.org/show_bug.cgi?id=95091">bug 95091</a> from <a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> Chris Wilson</a> <pre>I put a cap in so that the shadow doesn't become too pixellated: commit bca4e0e35e4ac27f2dcd1a8e5fcbf7ce69cec358 Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>> Date: Sat Apr 23 21:42:12 2016 +0100 sna: Limit generic convolution to smallish kernels Since the naive implementation uses an 8bit temporary, we can only support so many passes before the quantization artefacts become apparent. We have to be extra conservation in order to support multi-pass convolution algorithms (notable 2-pass separable Gaussian kernels). References: <a class="bz_bug_link bz_status_NEW " title="NEW - Pixelated shadow in Compiz" href="show_bug.cgi?id=95091">https://bugs.freedesktop.org/show_bug.cgi?id=95091</a> Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>> It's a tradeoff that hopefully should allow small drop shadows (~15 pixels) to be naively acceleration without looking atrocious. It would be possible to fully support convolution kernels on recent hardware, might be an interesting challenge.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>