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diff --git a/src/mgl.h b/src/mgl.h
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+/*
+ * The ManaPlus Client
+ * Copyright (C) 2012 The ManaPlus Developers
+ *
+ * This file is part of The ManaPlus Client.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef MGL_H
+#define MGL_H
+
+#define GL_GLEXT_PROTOTYPES 1
+
+#include <SDL_opengl.h>
+#include <GL/glext.h>
+
+#define defNameE(name) extern name##_t m##name
+
+typedef void (APIENTRY *glGenRenderbuffers_t)(GLsizei, GLuint *);
+typedef void (APIENTRY *glBindRenderbuffer_t)(GLenum target,
+ GLuint renderbuffer);
+typedef void (APIENTRY *glRenderbufferStorage_t)(GLenum target,
+ GLenum internalformat, GLsizei width, GLsizei height);
+typedef void (APIENTRY *glGenFramebuffers_t)(GLsizei n, GLuint *framebuffers);
+typedef void (APIENTRY *glBindFramebuffer_t)(GLenum target,
+ GLuint framebuffer);
+typedef void (APIENTRY *glFramebufferTexture2D_t)(GLenum target,
+ GLenum attachment, GLenum textarget, GLuint texture, GLint level);
+typedef void (APIENTRY *glFramebufferRenderbuffer_t)(GLenum target,
+ GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer);
+
+defNameE(glGenRenderbuffers);
+defNameE(glBindRenderbuffer);
+defNameE(glRenderbufferStorage);
+defNameE(glGenFramebuffers);
+defNameE(glBindFramebuffer);
+defNameE(glFramebufferTexture2D);
+defNameE(glFramebufferRenderbuffer);
+
+#endif