Re: XLIB_SKIP_ARGB_VISUALS and Qt OpenGL application with mesa
Thanks for your help, we indeed add a call to fmt.setAlphaBufferSize(1); Mathieu Westphal On Fri, Sep 21, 2018 at 8:11 PM Alan Coopersmith < alan.coopersm...@oracle.com> wrote: > On 09/21/18 10:54 AM, Adam Jackson wrote: > >> Since Composite is not enabled by default, it is not expected that > >> this issue will be visible to most users. > > > > Whatever documentation this is, is severely out of date. Composite's > > been enabled by default since xserver 1.4 in 2007 or so. > > That quote comes from the X11R6.8.2 release notes from 2005: > ftp://www.x.org/pub/X11R6.8.2/doc/RELNOTES5.html > > It holds no relevance to anything today. > > -- > -Alan Coopersmith- alan.coopersm...@oracle.com > Oracle Solaris Engineering - https://blogs.oracle.com/alanc > ___ xorg@lists.x.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: https://lists.x.org/mailman/listinfo/xorg Your subscription address: %(user_address)s
Re: XLIB_SKIP_ARGB_VISUALS and Qt OpenGL application with mesa
On 09/21/18 10:54 AM, Adam Jackson wrote: Since Composite is not enabled by default, it is not expected that this issue will be visible to most users. Whatever documentation this is, is severely out of date. Composite's been enabled by default since xserver 1.4 in 2007 or so. That quote comes from the X11R6.8.2 release notes from 2005: ftp://www.x.org/pub/X11R6.8.2/doc/RELNOTES5.html It holds no relevance to anything today. -- -Alan Coopersmith- alan.coopersm...@oracle.com Oracle Solaris Engineering - https://blogs.oracle.com/alanc ___ xorg@lists.x.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: https://lists.x.org/mailman/listinfo/xorg Your subscription address: %(user_address)s
XLIB_SKIP_ARGB_VISUALS and Qt OpenGL application with mesa
Hello Xorg list, When using mesa, my Qt OpenGL based application has some transparency issue. The OpenGL rendering zone is transparent but it should not be. XLIB_SKIP_ARGB_VISUALS seems to fix the issue but I wonder how I could specify this in the c++ code instead as in the environnement. Regarding the Xorg documentation : 5.3. Composite exposes extra visuals When the Composite extension is enabled via xorg.conf or the command line, a new visual is created. This visual is different from the other visuals used by X applications in that it includes an alpha component. It is used by the compositing manager and other Composite aware applications. Most X applications ignore this visual since it is not useful to them; however some applications mistakenly try to use it, which will cause them to fail. An environment variable, XLIB_SKIP_ARGB_VISUALS, was added to the X11 library to hide this visual from applications that mistakenly try to use it. If an application fails only when the Composite is enabled, try setting this environment variable before starting the application. Since Composite is not enabled by default, it is not expected that this issue will be visible to most users. My question would be : How to programmatic ally ensure that my Qt application does not mistakenly try to use the extra composite visual. Thanks, Mathieu Westphal ___ xorg@lists.x.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: https://lists.x.org/mailman/listinfo/xorg Your subscription address: %(user_address)s
