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-rw-r--r--src/egl/drivers/dri2/platform_x11.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/src/egl/drivers/dri2/platform_x11.c b/src/egl/drivers/dri2/platform_x11.c
index ccb097f1241..ec76aecfdd7 100644
--- a/src/egl/drivers/dri2/platform_x11.c
+++ b/src/egl/drivers/dri2/platform_x11.c
@@ -743,6 +743,20 @@ dri2_swap_buffers_msc(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw,
free(reply);
}
+ /* Since we aren't watching for the server's invalidate events like we're
+ * supposed to (due to XCB providing no mechanism for filtering the events
+ * the way xlib does), and SwapBuffers is a common cause of invalidate
+ * events, just shove one down to the driver, even though we haven't told
+ * the driver that we're the kind of loader that provides reliable
+ * invalidate events. This causes the driver to request buffers again at
+ * its next draw, so that we get the correct buffers if a pageflip
+ * happened. The driver should still be using the viewport hack to catch
+ * window resizes.
+ */
+ if (dri2_dpy->flush &&
+ dri2_dpy->flush->base.version >= 3 && dri2_dpy->flush->invalidate)
+ (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
+
return swap_count;
}