<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - PBO glDrawPixels fails with MSAA" href="https://bugs.freedesktop.org/show_bug.cgi?id=77412#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - PBO glDrawPixels fails with MSAA" href="https://bugs.freedesktop.org/show_bug.cgi?id=77412">bug 77412</a> from <a class="email" href="mailto:jason@jlekstrand.net" title="Jason Ekstrand <jason@jlekstrand.net>"> Jason Ekstrand</a> <pre>(In reply to Alexander Monakov from <a href="show_bug.cgi?id=77412#c3">comment #3</a>) > On what hardware did you get just 20%? I'm getting about 3x overall speedup > on IvyBridge (roughly 10s -> 3s run time), plus 10% faster if I change > GL_BGRA to GL_RGBA in the testcase source, otherwise it performs channel > swizzle for temporary texture. > > As I understand to make Meta viable for this you'd need to be able to > interpret PBO (linear) as a texture (normally tiled) without intermediate > copying. From what I know, such capability existed in Mesa some time ago > but not anymore. We can totally do this on Intel. In fact, we do for doing PBO uploads today. We just don't do it for DrawPixels. It should be easy enough to use the exact same path for DrawPixels, I just didn't think it was an issue.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>