<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - glReadPixels on Intel N3700 (Braswell) slower than Raspberry Pi" href="https://bugs.freedesktop.org/show_bug.cgi?id=99247#c6">Comment # 6</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - glReadPixels on Intel N3700 (Braswell) slower than Raspberry Pi" href="https://bugs.freedesktop.org/show_bug.cgi?id=99247">bug 99247</a> from <a class="email" href="mailto:jason@jlekstrand.net" title="Jason Ekstrand <jason@jlekstrand.net>"> Jason Ekstrand</a> <pre>Pierre, Generally, I would recommend against using RGB formats and expecting them to be fast. Very little modern hardware has actual RGB format support. Many drivers will have gone out of their way to try and Kane it fast for legacy applications but every time you use one you're rolling the dice and hoping you hit the optimized path. It's almost always better to use RGBA. Ken, Yes, we can accelerate it. Assuming Topi landed his blorp upload patches, it shouldn't be hard. As of recently, blorp has full support for RGB destinations. It won't be as fast as RGBA because we execute the fragment shader three times per pixel but it should be faster than the CPU fallback.</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>