4 * Common GL code that doesn't depend on a specific implementation
6 * Copyright (c) 2005 Nathan Keynes.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
19 #ifndef lxdream_video_gl_H
20 #define lxdream_video_gl_H 1
27 * Generic GL routine to draw the given frame buffer into a texture
29 gboolean gl_load_frame_buffer( frame_buffer_t frame, int tex_id );
32 * Reset the GL state to its initial values
34 void gl_reset_state();
37 * Generic GL routine to blank the display view with the specified colour.
39 void gl_display_blank( uint32_t colour );
42 * Write a rectangular texture (GL_TEXTURE_RECTANGLE_ARB) to the display frame
44 void gl_display_render_buffer( render_buffer_t buffer );
47 * Write a rectangular texture (GL_TEXTURE_RECTANGLE_ARB) to the display frame
49 void gl_texture_window( int width, int height, int tex_id, gboolean inverted );
52 * Convert window coordinates to dreamcast device coords (640x480) using the
53 * same viewable area as gl_texture_window.
54 * If the coordinates are outside the viewable area, the result is -1,-1.
56 void gl_window_to_system_coords( int *x, int *y );
59 * Generic GL read_render_buffer. This function assumes that the caller
60 * has already set the appropriate glReadBuffer(); in other words, unless
61 * there's only one buffer this needs to be wrapped.
63 gboolean gl_read_render_buffer( unsigned char *target, render_buffer_t buffer,
64 int rowstride, int colour_format );
67 /****** FBO handling (gl_fbo.c) ******/
68 gboolean gl_fbo_is_supported();
69 void gl_fbo_shutdown();
70 void gl_fbo_init( display_driver_t driver );
73 /** VBO/VAR handling (gl_vbo.c) ******/
74 void gl_vbo_init( display_driver_t driver );
76 /* Set the fallback vertex buffer handling, for drivers with no GL */
77 void gl_vbo_fallback_init( display_driver_t driver );
83 #endif /* !lxdream_video_gl_H */
.