GLX: Forward XExposeEvents to parent window

ANGLE creates a child window on X11, but Expose events need to be forwarded to the parent window. Caused an issue on Chrome Linux with a non-compositing window manager. Bug: 991577 Change-Id: Ia240d83403ed28e8e9a6e87164327d6d683dd9ca Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1824036Reviewed-by: Corentin Wallez <cwallez@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Jonah Ryan-Davis <jonahr@google.com>

GLX: Forward XExposeEvents to parent window
8007ca02 · Jonah Ryan-Davis · Commit Bot · d4c75347 · 8007ca02
Commit 8007ca02 authored Sep 25, 2019 by Jonah Ryan-Davis Committed by Commit Bot Sep 25, 2019
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WindowSurfaceGLX.cpp src/libANGLE/renderer/gl/glx/WindowSurfaceGLX.cpp +1 -0

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--- a/src/libANGLE/renderer/gl/glx/WindowSurfaceGLX.cpp
+++ b/src/libANGLE/renderer/gl/glx/WindowSurfaceGLX.cpp
@@ -117,6 +117,7 @@ egl::Error WindowSurfaceGLX::initialize(const egl::Display *display)
    mGLXWindow = mGLX.createWindow(mFBConfig, mWindow, nullptr);
    XMapWindow(mDisplay, mWindow);
+    XSelectInput(mDisplay, mWindow, ExposureMask);  // For XExposeEvent forwarding from child window
    XFlush(mDisplay);
    XFree(visualInfo);