diff options
Diffstat (limited to 'src/core/web_engine_context.cpp')
| -rw-r--r-- | src/core/web_engine_context.cpp | 33 |
1 files changed, 24 insertions, 9 deletions
diff --git a/src/core/web_engine_context.cpp b/src/core/web_engine_context.cpp index db74978d3..096568570 100644 --- a/src/core/web_engine_context.cpp +++ b/src/core/web_engine_context.cpp @@ -422,10 +422,23 @@ WebEngineContext::WebEngineContext() // an OpenGL Core Profile context. If the switch is not set, it would always try to create a // Core Profile context, even if Qt uses a legacy profile, which causes // "Could not share GL contexts" warnings, because it's not possible to share between Core and - // legacy profiles. - // Given that Core profile is not currently supported on Windows anyway, pass this switch to - // get rid of the warnings. - parsedCommandLine->AppendSwitch(switches::kDisableES3GLContext); + // legacy profiles. See GLContextWGL::Initialize(). + // Given that Desktop GL Core profile is not currently supported on Windows anyway, pass this + // switch to get rid of the warnings. + // + // The switch is also used to determine which version of OpenGL ES to use (2 or 3) when using + // ANGLE. + // If the switch is not set, Chromium will always try to create an ES3 context, even if Qt uses + // an ES2 context, which causes resource sharing issues (black screen), + // see gpu::gles2::GenerateGLContextAttribs(). + // Make sure to disable ES3 context creation when using ES2. + const bool isGLES2Context = qt_gl_global_share_context() + && qt_gl_global_share_context()->isOpenGLES() + && qt_gl_global_share_context()->format().majorVersion() == 2; + const bool isDesktopGLOrSoftware = !usingANGLE(); + + if (isDesktopGLOrSoftware || isGLES2Context) + parsedCommandLine->AppendSwitch(switches::kDisableES3GLContext); #endif // Needed to allow navigations within pages that were set using setHtml(). One example is // tst_QWebEnginePage::acceptNavigationRequest. @@ -456,8 +469,7 @@ WebEngineContext::WebEngineContext() #ifndef QT_NO_OPENGL bool tryGL = - !usingANGLE() - && (!usingSoftwareDynamicGL() + (!usingSoftwareDynamicGL() // If user requested WebGL support instead of using Skia rendering to // bitmaps, use software rendering via software OpenGL. This might be less // performant, but at least provides WebGL support. @@ -467,10 +479,13 @@ WebEngineContext::WebEngineContext() if (tryGL) { if (qt_gl_global_share_context() && qt_gl_global_share_context()->isValid()) { - // If the native handle is QEGLNativeContext try to use GL ES/2, if there is no native handle - // assume we are using wayland and try GL ES/2, and finally Ozone demands GL ES/2 too. + // If the native handle is QEGLNativeContext try to use GL ES/2. + // If there is no native handle, assume we are using wayland and try GL ES/2. + // If we are using ANGLE on Windows, use OpenGL ES (2 or 3). if (qt_gl_global_share_context()->nativeHandle().isNull() - || !strcmp(qt_gl_global_share_context()->nativeHandle().typeName(), "QEGLNativeContext")) + || !strcmp(qt_gl_global_share_context()->nativeHandle().typeName(), + "QEGLNativeContext") + || usingANGLE()) { if (qt_gl_global_share_context()->isOpenGLES()) { glType = gl::kGLImplementationEGLName; |