xcb: make it possible to disable gl integrations
By setting QT_XCB_GL_INTEGRATION to the special value "none", no plugins will be considered for loading. This matches what eglfs does with QT_QPA_EGLFS_INTEGRATION. This allows widget or raster-QWindow-only apps to start up faster by not spending time on plugin loading and potential initialization steps there. Task-number: QTBUG-46765 Change-Id: Ifeec3548a9b58f619a18e0be75fe4a9f489677a9 Reviewed-by: Jørgen Lind <jorgen.lind@theqtcompany.com>
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@ -532,9 +532,14 @@ QXcbConnection::QXcbConnection(QXcbNativeInterface *nativeInterface, bool canGra
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QStringList glIntegrationNames;
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glIntegrationNames << QStringLiteral("xcb_glx") << QStringLiteral("xcb_egl");
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QString glIntegrationName = QString::fromLocal8Bit(qgetenv("QT_XCB_GL_INTEGRATION"));
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if (glIntegrationName.size()) {
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if (!glIntegrationName.isEmpty()) {
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qCDebug(QT_XCB_GLINTEGRATION) << "QT_XCB_GL_INTEGRATION is set to" << glIntegrationName;
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if (glIntegrationName != QStringLiteral("none")) {
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glIntegrationNames.removeAll(glIntegrationName);
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glIntegrationNames.prepend(glIntegrationName);
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} else {
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glIntegrationNames.clear();
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}
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}
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qCDebug(QT_XCB_GLINTEGRATION) << "Choosing xcb gl-integration based on following priority\n" << glIntegrationNames;
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