sdl2: add support for display rendering using opengl.

Add new sdl2-gl.c file, with display
rendering functions using opengl.

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

1 files changed, 7 insertions, 0 deletions

diff --git a/ui/sdl2-2d.c b/ui/sdl2-2d.c
index 46ef5f7d3e..bb56747140 100644
--- a/ui/sdl2-2d.c
+++ b/ui/sdl2-2d.c
@@ -36,6 +36,8 @@ void sdl2_2d_update(DisplayChangeListener *dcl,
     DisplaySurface *surf = qemu_console_surface(dcl->con);
     SDL_Rect rect;
 
+    assert(!scon->opengl);
+
     if (!surf) {
         return;
     }
@@ -61,6 +63,8 @@ void sdl2_2d_switch(DisplayChangeListener *dcl,
     DisplaySurface *old_surface = scon->surface;
     int format = 0;
 
+    assert(!scon->opengl);
+
     scon->surface = new_surface;
 
     if (scon->texture) {
@@ -101,12 +105,15 @@ void sdl2_2d_refresh(DisplayChangeListener *dcl)
 {
     struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
 
+    assert(!scon->opengl);
     graphic_hw_update(dcl->con);
     sdl2_poll_events(scon);
 }
 
 void sdl2_2d_redraw(struct sdl2_console *scon)
 {
+    assert(!scon->opengl);
+
     if (!scon->surface) {
         return;
     }