Introduce new platform capability ThreadedOpenGL.

Lets the platform plugin advertise whether it's safe to use OpenGL from
a different thread. With XCB we only advertise this if we have a
reasonably new XCB libary, as older versions suffer from the
xcb_wait_for_reply() blocking bug, which cause GL rendering in a
separate to stall when using Mesa drivers.

Change-Id: I4829df7e583a1c8aed218ae13a159d21266cc594
Reviewed-on: http://codereview.qt.nokia.com/3613
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>

diff --git a/src/plugins/platforms/wayland/qwaylandintegration.cpp b/src/plugins/platforms/wayland/qwaylandintegration.cpp
index eefd86d..3ed5f16 100644 (file)
--- a/src/plugins/platforms/wayland/qwaylandintegration.cpp
+++ b/src/plugins/platforms/wayland/qwaylandintegration.cpp
@@ -89,6 +89,8 @@ bool QWaylandIntegration::hasCapability(QPlatformIntegration::Capability cap) co
 #else
         return false;
 #endif
+    case ThreadedOpenGL:
+        return hasCapability(OpenGL);
     default: return QPlatformIntegration::hasCapability(cap);
     }
 }