<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#c2">Comment # 2</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:pierre@digitalstar.net" title="Pierre Proske <pierre@digitalstar.net>"> Pierre Proske</a> <pre>The code I'm using is this, I'm pretty sure the format is RGB 888 which I'm guessing is slow. However on Windows it's running the exact same code. void ofFbo::readToPixels(ofPixels & pixels, int attachmentPoint) const{ if(!bIsAllocated) return; #ifndef TARGET_OPENGLES getTexture(attachmentPoint).readToPixels(pixels); #else pixels.allocate(settings.width,settings.height,ofGetImageTypeFromGLType(settings.internalformat)); bind(); int format = ofGetGLFormatFromInternal(settings.internalformat); glReadPixels(0,0,settings.width, settings.height, format, GL_UNSIGNED_BYTE, pixels.getData()); unbind(); #endif } I'm using the OpenFrameworks Library, grabbing pixels from an FBO: <a href="https://github.com/openframeworks/openFrameworks/blob/0.9.8/libs/openFrameworks/gl/ofFbo.cpp">https://github.com/openframeworks/openFrameworks/blob/0.9.8/libs/openFrameworks/gl/ofFbo.cpp</a> I'll have a look a getting an API trace uploaded. This is the tool right? <a href="https://github.com/apitrace/apitrace">https://github.com/apitrace/apitrace</a></pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>