1 files changed, 90 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.15/src/video/x11/SDL_x11dga.c b/distrib/sdl-1.2.15/src/video/x11/SDL_x11dga.c
new file mode 100644
index 0000000..e1c0c2e
--- /dev/null
+++ b/distrib/sdl-1.2.15/src/video/x11/SDL_x11dga.c
@@ -0,0 +1,90 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997-2012 Sam Lantinga
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+    Sam Lantinga
+    slouken@libsdl.org
+*/
+#include "SDL_config.h"
+
+/* This is currently only used to enable DGA mouse.
+   There is a completely separate DGA driver that is fullscreen-only.
+*/
+
+#include "SDL_video.h"
+#include "../SDL_cursor_c.h"
+#include "SDL_x11dga_c.h"
+
+/* Global for the error handler */
+int dga_event, dga_error = -1;
+
+void X11_EnableDGAMouse(_THIS)
+{
+#if SDL_VIDEO_DRIVER_X11_DGAMOUSE
+    static int use_dgamouse = -1;
+
+    /* Check configuration to see if we should use DGA mouse */
+    if ( use_dgamouse < 0 ) {
+        int dga_major, dga_minor;
+        int dga_flags;
+        const char *env_use_dgamouse;
+
+        use_dgamouse = 1;
+        env_use_dgamouse = SDL_getenv("SDL_VIDEO_X11_DGAMOUSE");
+        if ( env_use_dgamouse ) {
+            use_dgamouse = SDL_atoi(env_use_dgamouse);
+        }
+        /* Check for buggy X servers */
+        if ( use_dgamouse && BUGGY_XFREE86(==, 4000) ) {
+            use_dgamouse = 0;
+        }
+        if ( !use_dgamouse || !local_X11 ||
+             !SDL_NAME(XF86DGAQueryExtension)(SDL_Display, &dga_event, &dga_error) ||
+             !SDL_NAME(XF86DGAQueryVersion)(SDL_Display, &dga_major, &dga_minor) ||
+             !SDL_NAME(XF86DGAQueryDirectVideo)(SDL_Display, SDL_Screen, &dga_flags) ||
+             !(dga_flags & XF86DGADirectPresent) ) {
+            use_dgamouse = 0;
+        }
+    }
+
+    if ( use_dgamouse && !(using_dga & DGA_MOUSE) ) {
+	if ( SDL_NAME(XF86DGADirectVideo)(SDL_Display, SDL_Screen, XF86DGADirectMouse) ) {
+            using_dga |= DGA_MOUSE;
+        }
+    }
+#endif /* SDL_VIDEO_DRIVER_X11_DGAMOUSE */
+}
+
+/* Argh.  Glide resets DGA mouse mode when it makes the context current! */
+void X11_CheckDGAMouse(_THIS)
+{
+#if SDL_VIDEO_DRIVER_X11_DGAMOUSE
+    if ( using_dga & DGA_MOUSE ) {
+	SDL_NAME(XF86DGADirectVideo)(SDL_Display,SDL_Screen,XF86DGADirectMouse);
+    }
+#endif
+}
+
+void X11_DisableDGAMouse(_THIS)
+{
+#if SDL_VIDEO_DRIVER_X11_DGAMOUSE
+    if ( using_dga & DGA_MOUSE ) {
+	SDL_NAME(XF86DGADirectVideo)(SDL_Display, SDL_Screen, 0);
+        using_dga &= ~DGA_MOUSE;
+    }
+#endif /* SDL_VIDEO_DRIVER_X11_DGAMOUSE */
+}