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  1. Qt
  2. QTBUG-55466

WebEngine shows only black or transparent window

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      Description

      Black or transparent browser window was reproduced on AMD Radeon based GPU when using OpenGL 4.0.

      Output from application with --log-level=1 (error 0x502 seems to be GL_INVALID_OPERATION):

      ARB::createContext: wglCreateContextAttribsARB() failed (GL error code: 0x502)
      for format: QSurfaceFormat(version 4.0, options QFlags(0x4), depthBufferSize
      24, redBufferSize -1, greenBufferSize -1, blueBufferSize -1, alphaBufferSize
      -1, stencilBufferSize 8, samples -1, swapBehavior 0, swapInterval 0, profile
      2), shared context: 0x10002 ()
      GDI::createContext: wglShareLists() failed. ()
      [0818/093140:ERROR:scoped_ole_initializer.cc(20)] Multiple OleInitialize() calls for thread 7812
      [0818/093145:ERROR:process_win.cc(135)] Unable to terminate process: Access is denied. (0x5)
      composeAndFlush: makeCurrent() failed
      composeAndFlush: makeCurrent() failed
      composeAndFlush: makeCurrent() failed
      composeAndFlush: makeCurrent() failed
      composeAndFlush: makeCurrent() failed
      composeAndFlush: makeCurrent() failed
      composeAndFlush: makeCurrent() failed
      composeAndFlush: makeCurrent() failed
      [0818/093242:ERROR:process_win.cc(135)] Unable to terminate process: Access is denied. (0x5)
      

      This was used to set up OpenGL 4.0:

      QCoreApplication::setAttribute(Qt::AA_ShareOpenGLContexts);
      QSurfaceFormat format;
      format.setVersion(4, 0);
      format.setProfile(QSurfaceFormat::CompatibilityProfile);
      format.setDepthBufferSize(24);
      format.setStencilBufferSize(8);
      format.setSwapInterval(0);
      format.setOption(QSurfaceFormat::DeprecatedFunctions, true);
      QSurfaceFormat::setDefaultFormat(format);
      

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            Assignee:
            qt_webengine_team Qt WebEngine Team
            Reporter:
            poikelin Joni Poikelin
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              Updated:
              Resolved:

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