/**

 * $Id$

 *

 * GL-based support functions 

 *

 * Copyright (c) 2005 Nathan Keynes.

 *

 * 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

 * (at your option) 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.

 */

#ifndef lxdream_glutil_H

#define lxdream_glutil_H

#include "display.h"

/**

 * Test if a specific extension is supported. From opengl.org

 * @param extension extension name to check for

 * @return TRUE if supported, otherwise FALSE.

 */

gboolean isGLExtensionSupported( const char *extension );

/**

 * Test if secondary color (GL_COLOR_SUM) is supported.

 */

gboolean isGLSecondaryColorSupported();

gboolean isGLVertexBufferSupported();

gboolean isGLPixelBufferSupported();

gboolean isGLMirroredTextureSupported();

/****** Shader handling (gl_sl.c) *****/

gboolean glsl_is_supported(void);

gboolean glsl_load_shaders( const char *vert_shader, const char *frag_shader );

void glsl_unload_shaders(void);

void glsl_enable_shaders( gboolean enable );

extern const char *glsl_vertex_shader_src;

extern const char *glsl_fragment_shader_src;

#endif /* !lxdream_glutil_H */