https://bugs.kde.org/show_bug.cgi?id=456482
--- Comment #12 from Nick Korotysh <tevut...@mail.ru> --- I got h/w decoding (vaapi in particular case) working on X11! but mentioned change seems to be vital in any case, "display" variable must be passed as one of mpv initialization parameters. all I did - just set environment variable `QT_XCB_GL_INTEGRATION` to "xcb_egl": ``` export QT_XCB_GL_INTEGRATION="xcb_egl" ``` this was based on comment on GitHub you pointed (it says that EGL context is required for mpv) and this particular piece of Qt code https://github.com/qt/qtbase/blob/231d3670981a33ec42b91ad1cb33c1fc50551066/src/plugins/platforms/xcb/qxcbconnection.cpp#L1079-L1104 first of all I viewed which GL libraries are loaded by application. I was surprised to see both 'libGLX.so' and 'libEGL.so'. but when looked closer (and analyzed 'SMPlayer'+'mpv') found the difference - Qt applications also load 'libGLX_mesa.so' (very likely real OpenGL implementation) and mpv loads 'libEGL_mesa.so' instead. I already knew that Qt on X11 uses so-called 'xcb' platform plugin and it has something called "GL integration", and 2 "backends" are provided for that (exactly GLX and EGL), which very likely can be switched on runtime somehow. I just went deep into Qt sources starting from `QQuickFramebufferObject::Renderer::createFramebufferObject()` found in your code. P.S> please don't think that I know OpenGL specific on Linux, Qt Open GL integration on something specific to mpv - I know neither of those! I just familiar with Qt sources and its build process/dependencies on Linux and just used information you provided. so, I think issue can be marked as solved :) waiting new release in Debian unstable repo :) -- You are receiving this mail because: You are watching all bug changes.
