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  1. Qt
  2. QTBUG-104952

QT_WIDGETS_RHI/QOpenGLWidget lost transparency support on X11

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Details

    • Linux/X11
    • 856bb38eaf (qt/qtbase/dev) 856bb38eaf (qt/tqtc-qtbase/dev) 833d6cdb30 (qt/qtbase/6.4) 833d6cdb30 (qt/tqtc-qtbase/6.4)

    Description

      There seem to be no transparency with both xcb_glx and xcb_egl backends when launching the application with QT_WIDGETS_RHI or when creating a QOpenGLWidget. This is probably relevant:

      qt.qpa.gl: Requested format before FBConfig/Visual selection: QSurfaceFormat(version 2.0, options QFlags<QSurfaceFormat::FormatOption>(), depthBufferSize -1, redBufferSize 8, greenBufferSize 8, blueBufferSize 8, alphaBufferSize -1, stencilBufferSize -1, samples -1, swapBehavior QSurfaceFormat::DefaultSwapBehavior, swapInterval 1, colorSpace QColorSpace(), profile  QSurfaceFormat::NoProfile)
qt.qpa.gl: Available GLX extensions: GLX_ARB_create_context GLX_ARB_create_context_no_error GLX_ARB_create_context_profile GLX_ARB_create_context_robustness GLX_ARB_fbconfig_float GLX_ARB_framebuffer_sRGB GLX_ARB_get_proc_address GLX_ARB_multisample GLX_EXT_buffer_age GLX_EXT_create_context_es2_profile GLX_EXT_create_context_es_profile GLX_EXT_fbconfig_packed_float GLX_EXT_framebuffer_sRGB GLX_EXT_import_context GLX_EXT_no_config_context GLX_EXT_swap_control GLX_EXT_swap_control_tear GLX_EXT_texture_from_pixmap GLX_EXT_visual_info GLX_EXT_visual_rating GLX_INTEL_swap_event GLX_MESA_copy_sub_buffer GLX_MESA_query_renderer GLX_MESA_swap_control GLX_OML_swap_method GLX_OML_sync_control GLX_SGIS_multisample GLX_SGIX_fbconfig GLX_SGIX_pbuffer GLX_SGIX_visual_select_group GLX_SGI_make_current_read GLX_SGI_swap_control GLX_SGI_video_sync 
qt.qpa.gl: Got format: QSurfaceFormat(version 2.0, options QFlags<QSurfaceFormat::FormatOption>(), depthBufferSize 0, redBufferSize 8, greenBufferSize 8, blueBufferSize 8, alphaBufferSize 0, stencilBufferSize 0, samples -1, swapBehavior QSurfaceFormat::DefaultSwapBehavior, swapInterval 1, colorSpace QColorSpace(), profile  QSurfaceFormat::NoProfile)

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          resulted in

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-107629 [REG 6.3->6.4] WebEngineWidget OpenGL rendering is broken on Windows

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed
          For Gerrit Dashboard: QTBUG-104952
          # Subject Branch Project Status CR V
          421794,4 Evaluate TranslucentBackground when (re)creating the window dev qt/qtbase Status: MERGED +2 0
          424463,2 Evaluate TranslucentBackground when (re)creating the window 6.4 qt/qtbase Status: MERGED +2 0

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              lagocs Laszlo Agocs
              ilya-fedin Ilya Fedin
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              Dates

                Created:
                Updated:
                Resolved:

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