window: Add a simple getenv to force SHM rendering

diff --git a/clients/window.c b/clients/window.c
index ce0130c..f12ce39 100644 (file)
--- a/clients/window.c
+++ b/clients/window.c
@@ -4351,11 +4351,11 @@ surface_create(struct window *window)
        return surface;
 }
 
-static window_buffer_type
+static enum window_buffer_type
 get_preferred_buffer_type(struct display *display)
 {
 #ifdef HAVE_CAIRO_EGL
-       if (display->argb_device)
+       if (display->argb_device && !getenv("TOYTOOLKIT_NO_EGL"))
                return WINDOW_BUFFER_TYPE_EGL_WINDOW;
 #endif