sdl2: add+use sdl2_2d_redraw function.

Add a new sdl2_2d_redraw function for a complete screen refresh,
so we can stop using graphic_hw_invalidate for that.  There is
no need to bother console / gfx emulation code if we are just
going to re-blit the screen after window resizes.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/ui/sdl2-2d.c b/ui/sdl2-2d.c
index 29ada53552..40a552c7cb 100644
--- a/ui/sdl2-2d.c
+++ b/ui/sdl2-2d.c
@@ -100,4 +100,15 @@ void sdl2_2d_switch(DisplayChangeListener *dcl,
                                       SDL_TEXTUREACCESS_STREAMING,
                                       surface_width(new_surface),
                                       surface_height(new_surface));
+    sdl2_2d_redraw(scon);
+}
+
+void sdl2_2d_redraw(struct sdl2_console *scon)
+{
+    if (!scon->surface) {
+        return;
+    }
+    sdl2_2d_update(&scon->dcl, 0, 0,
+                   surface_width(scon->surface),
+                   surface_height(scon->surface));
 }