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diff --git a/distrib/sdl-1.2.15/src/video/x11/SDL_x11gamma_c.h b/distrib/sdl-1.2.15/src/video/x11/SDL_x11gamma_c.h
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+++ b/distrib/sdl-1.2.15/src/video/x11/SDL_x11gamma_c.h
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+/*
+ 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"
+
+#ifndef _SDL_x11gamma_h
+#define _SDL_x11gamma_h
+
+extern int X11_SetVidModeGamma(_THIS, float red, float green, float blue);
+extern int X11_GetVidModeGamma(_THIS, float *red, float *green, float *blue);
+extern void X11_SaveVidModeGamma(_THIS);
+extern void X11_SwapVidModeGamma(_THIS);
+
+#endif