On Jun 14, 2012, at 10:39 AM, ext dietrich.gos...@conti-engineering.com wrote:
> Hi, > The vsync problems in Qt 5 Alpha are still there. I am using the eglfs plugin > on an i.MX board. > Although the performance is ok, tearing is visible. The new threading model > of scenegraph was supposed to fix this, wasn’t it? > Is this maybe a eglfs plugin problem? The threaded renderloop doesn't really affect tearing. We call QOpenGLContext::swapBuffers() which turns into eglSwapBuffers() inside the eglfs plugin. If that tears, then it is because: 1. eglSwapInterval has not been set to 1 (indicating that buffer presentation to screen should happen in sync with vsync) or 2. The GL driver does not support tearfree graphics. If you can run a stand alone OpenGL app and it does not tear, then the problem is most likely related to 1. cheers, Gunnar _______________________________________________ Development mailing list Development@qt-project.org http://lists.qt-project.org/mailman/listinfo/development
