nkeynes@352: /**
nkeynes@443:  * $Id: gl_common.h,v 1.4 2007-10-13 04:01:02 nkeynes Exp $
nkeynes@352:  *
nkeynes@352:  * Parent for all X11 display drivers.
nkeynes@352:  *
nkeynes@352:  * Copyright (c) 2005 Nathan Keynes.
nkeynes@352:  *
nkeynes@352:  * This program is free software; you can redistribute it and/or modify
nkeynes@352:  * it under the terms of the GNU General Public License as published by
nkeynes@352:  * the Free Software Foundation; either version 2 of the License, or
nkeynes@352:  * (at your option) any later version.
nkeynes@352:  *
nkeynes@352:  * This program is distributed in the hope that it will be useful,
nkeynes@352:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
nkeynes@352:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
nkeynes@352:  * GNU General Public License for more details.
nkeynes@352:  */
nkeynes@352: 
nkeynes@352: #ifndef video_gl_common_H
nkeynes@352: #define video_gl_common_H
nkeynes@352: 
nkeynes@352: #include "display.h"
nkeynes@352: 
nkeynes@352: /**
nkeynes@352:  * Test if a specific extension is supported. From opengl.org
nkeynes@352:  * @param extension extension name to check for
nkeynes@352:  * @return TRUE if supported, otherwise FALSE.
nkeynes@352:  */
nkeynes@352: gboolean isGLExtensionSupported( const char *extension );
nkeynes@352: 
nkeynes@352: gboolean hasRequiredGLExtensions();
nkeynes@352: 
nkeynes@352: /**
nkeynes@352:  * Generic GL routine to draw the given frame buffer in the display view.
nkeynes@352:  */
nkeynes@352: gboolean gl_display_frame_buffer( frame_buffer_t frame );
nkeynes@352: 
nkeynes@352: /**
nkeynes@352:  * Generic GL routine to blank the display view with the specified colour.
nkeynes@352:  */
nkeynes@352: gboolean gl_display_blank( uint32_t colour );
nkeynes@352: 
nkeynes@443: /**
nkeynes@443:  * Copy the frame buffer contents to the specified texture id
nkeynes@443:  */
nkeynes@443: void gl_frame_buffer_to_tex_rectangle( frame_buffer_t frame, GLuint texid );
nkeynes@443: 
nkeynes@443: /**
nkeynes@443:  * Write a rectangular texture (GL_TEXTURE_RECTANGLE_ARB) to the display frame
nkeynes@443:  */
nkeynes@443: void gl_display_tex_rectangle( GLuint texid, uint32_t texwidth, uint32_t texheight, gboolean invert );
nkeynes@443: 
nkeynes@443: /**
nkeynes@443:  * Redisplay the last frame.
nkeynes@443:  */
nkeynes@443: void gl_redisplay_last();
nkeynes@352: 
nkeynes@352: /**
nkeynes@352:  * Generic GL read_render_buffer. This function assumes that the caller
nkeynes@352:  * has already set the appropriate glReadBuffer(); in other words, unless
nkeynes@352:  * there's only one buffer this needs to be wrapped.
nkeynes@352:  */
nkeynes@429: gboolean gl_read_render_buffer( render_buffer_t buffer, unsigned char *target );
nkeynes@352: 
nkeynes@352: 
nkeynes@352: /****** FBO handling (gl_fbo.c) ******/
nkeynes@352: gboolean gl_fbo_is_supported();
nkeynes@352: void gl_fbo_shutdown();
nkeynes@352: void gl_fbo_init( display_driver_t driver );
nkeynes@352: 
nkeynes@405: /****** Shader handling (gl_sl.c) *****/
nkeynes@405: gboolean glsl_is_supported(void);
nkeynes@405: gboolean glsl_load_shaders( const char *vert_shader, const char *frag_shader );
nkeynes@405: void glsl_unload_shaders(void);
nkeynes@405: 
nkeynes@405: extern const char *glsl_vertex_shader_src;
nkeynes@405: extern const char *glsl_fragment_shader_src;
nkeynes@405: 
nkeynes@352: #endif /* !video_gl_common_H */