<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [regression] WebGL demo iamnop.com/particles is very slow and spends far too long compiling shaders" href="https://bugs.freedesktop.org/show_bug.cgi?id=97035#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [regression] WebGL demo iamnop.com/particles is very slow and spends far too long compiling shaders" href="https://bugs.freedesktop.org/show_bug.cgi?id=97035">bug 97035</a> from <a class="email" href="mailto:eero.t.tamminen@intel.com" title="Eero Tamminen <eero.t.tamminen@intel.com>"> Eero Tamminen</a> <pre>(In reply to Eero Tamminen from <a href="show_bug.cgi?id=97035#c3">comment #3</a>) > Tested this on SKL GT2 with today's Mesa. > > All the other shapes selectable in the WebGL demo load instantly and run > well over 60FPS. However, selecting the default "galaxy" shape takes ~20s > and runs at ~2FPS. With Mesa 11.2, compilation takes only few seconds and "galaxy" runs at full speed. When comparing at the generated assembly, Mesa 11.2 spills a bit: SIMD8 shader: 4432 instructions. 0 loops. 35394 cycles. 81:179 spills:fills. Promoted 18 constants. Compacted 70912 to 48880 bytes (31%) But the latest Mesa spills a lot more: SIMD8 shader: 7985 instructions. 0 loops. 57210 cycles. 359:993 spills:fills. Promoted 19 constants. Compacted 127760 to 86032 bytes (33%) I'll try whether I can locate the regression in this with eZBench: <a href="https://cgit.freedesktop.org/ezbench/tree/README">https://cgit.freedesktop.org/ezbench/tree/README</a> Note: When looking at the SIMD8 shader code generated by the Windows driver, it doesn't spill at all.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>