Commit b0bd9d82 authored by Jasper St. Pierre's avatar Jasper St. Pierre

Revert "wayland: Prevent stale paints and weird artifacts when using Weston"

This reverts commit 76922c16.

This is too local a fix, and is broken if the user paints to a small
region, as the entire buffer will be wiped.
parent 5a252f13
......@@ -889,10 +889,3 @@ _gdk_wayland_shm_surface_get_busy (cairo_surface_t *surface)
GdkWaylandCairoSurfaceData *data = cairo_surface_get_user_data (surface, &gdk_wayland_cairo_key);
return data->busy;
_gdk_wayland_shm_surface_clear (cairo_surface_t *surface)
GdkWaylandCairoSurfaceData *data = cairo_surface_get_user_data (surface, &gdk_wayland_cairo_key);
memset (data->buf, 0, data->buf_length);
......@@ -185,6 +185,5 @@ cairo_surface_t * _gdk_wayland_display_create_shm_surface (GdkWaylandDisplay *di
struct wl_buffer *_gdk_wayland_shm_surface_get_wl_buffer (cairo_surface_t *surface);
void _gdk_wayland_shm_surface_set_busy (cairo_surface_t *surface);
gboolean _gdk_wayland_shm_surface_get_busy (cairo_surface_t *surface);
void _gdk_wayland_shm_surface_clear (cairo_surface_t *surface);
#endif /* __GDK_PRIVATE_WAYLAND_H__ */
......@@ -568,23 +568,7 @@ gdk_window_impl_wayland_begin_paint_region (GdkWindow *window,
GdkWindowImplWayland *impl = GDK_WINDOW_IMPL_WAYLAND (window->impl);
gdk_wayland_window_ensure_cairo_surface (window);
if (_gdk_wayland_shm_surface_get_busy (impl->cairo_surface))
/* The surface is busy, so create a temporary surface which we paint
* to and hope that by the time we're done painting the surface isn't
* busy any more. */
return TRUE;
/* Returning FALSE from begin_paint_region says to use the native
* backing surface, which is our SHM surface. We need to make sure
* to clear it before the code tries to paint to it to prevent
* artifacts from the last paint. */
_gdk_wayland_shm_surface_clear (impl->cairo_surface);
return FALSE;
return _gdk_wayland_shm_surface_get_busy (impl->cairo_surface);
static void
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