nkeynes@635 | 1 | /**
|
nkeynes@635 | 2 | * $Id$
|
nkeynes@635 | 3 | *
|
nkeynes@662 | 4 | * Common GL code that doesn't depend on a specific implementation
|
nkeynes@635 | 5 | *
|
nkeynes@635 | 6 | * Copyright (c) 2005 Nathan Keynes.
|
nkeynes@635 | 7 | *
|
nkeynes@635 | 8 | * This program is free software; you can redistribute it and/or modify
|
nkeynes@635 | 9 | * it under the terms of the GNU General Public License as published by
|
nkeynes@635 | 10 | * the Free Software Foundation; either version 2 of the License, or
|
nkeynes@635 | 11 | * (at your option) any later version.
|
nkeynes@635 | 12 | *
|
nkeynes@635 | 13 | * This program is distributed in the hope that it will be useful,
|
nkeynes@635 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
nkeynes@635 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
nkeynes@635 | 16 | * GNU General Public License for more details.
|
nkeynes@635 | 17 | */
|
nkeynes@635 | 18 |
|
nkeynes@736 | 19 | #ifndef lxdream_video_gl_H
|
nkeynes@736 | 20 | #define lxdream_video_gl_H 1
|
nkeynes@736 | 21 |
|
nkeynes@736 | 22 | #ifdef __cplusplus
|
nkeynes@736 | 23 | extern "C" {
|
nkeynes@736 | 24 | #endif
|
nkeynes@635 | 25 |
|
nkeynes@1236 | 26 | extern uint32_t video_width, video_height;
|
nkeynes@1236 | 27 |
|
nkeynes@1236 | 28 | /**
|
nkeynes@1236 | 29 | * Set the video size used by the frame blits
|
nkeynes@1236 | 30 | */
|
nkeynes@1251 | 31 | void gl_set_video_size( uint32_t width, uint32_t height, int flipped );
|
nkeynes@1236 | 32 |
|
nkeynes@635 | 33 | /**
|
nkeynes@635 | 34 | * Generic GL routine to draw the given frame buffer into a texture
|
nkeynes@635 | 35 | */
|
nkeynes@1298 | 36 | void gl_frame_buffer_to_tex( frame_buffer_t frame, int tex_id );
|
nkeynes@635 | 37 |
|
nkeynes@635 | 38 | /**
|
nkeynes@669 | 39 | * Reset the GL state to its initial values
|
nkeynes@669 | 40 | */
|
nkeynes@669 | 41 | void gl_reset_state();
|
nkeynes@669 | 42 |
|
nkeynes@669 | 43 | /**
|
nkeynes@635 | 44 | * Generic GL routine to blank the display view with the specified colour.
|
nkeynes@635 | 45 | */
|
nkeynes@669 | 46 | void gl_display_blank( uint32_t colour );
|
nkeynes@635 | 47 |
|
nkeynes@635 | 48 | /**
|
nkeynes@1222 | 49 | * Write a rectangular texture (GL_TEXTURE_2D) to the display frame
|
nkeynes@635 | 50 | */
|
nkeynes@635 | 51 | void gl_display_render_buffer( render_buffer_t buffer );
|
nkeynes@635 | 52 |
|
nkeynes@635 | 53 | /**
|
nkeynes@1222 | 54 | * Write a rectangular texture (GL_TEXTURE_2D) to the display frame
|
nkeynes@635 | 55 | */
|
nkeynes@635 | 56 | void gl_texture_window( int width, int height, int tex_id, gboolean inverted );
|
nkeynes@635 | 57 |
|
nkeynes@635 | 58 | /**
|
nkeynes@854 | 59 | * Convert window coordinates to dreamcast device coords (640x480) using the
|
nkeynes@854 | 60 | * same viewable area as gl_texture_window.
|
nkeynes@854 | 61 | * If the coordinates are outside the viewable area, the result is -1,-1.
|
nkeynes@854 | 62 | */
|
nkeynes@854 | 63 | void gl_window_to_system_coords( int *x, int *y );
|
nkeynes@854 | 64 |
|
nkeynes@854 | 65 | /**
|
nkeynes@635 | 66 | * Generic GL read_render_buffer. This function assumes that the caller
|
nkeynes@635 | 67 | * has already set the appropriate glReadBuffer(); in other words, unless
|
nkeynes@635 | 68 | * there's only one buffer this needs to be wrapped.
|
nkeynes@635 | 69 | */
|
nkeynes@635 | 70 | gboolean gl_read_render_buffer( unsigned char *target, render_buffer_t buffer,
|
nkeynes@736 | 71 | int rowstride, int colour_format );
|
nkeynes@635 | 72 |
|
nkeynes@635 | 73 |
|
nkeynes@1246 | 74 | void gl_framebuffer_setup(void);
|
nkeynes@1246 | 75 | void gl_framebuffer_cleanup(void);
|
nkeynes@635 | 76 | /****** FBO handling (gl_fbo.c) ******/
|
nkeynes@635 | 77 | gboolean gl_fbo_is_supported();
|
nkeynes@635 | 78 | void gl_fbo_shutdown();
|
nkeynes@635 | 79 | void gl_fbo_init( display_driver_t driver );
|
nkeynes@635 | 80 | void gl_fbo_detach();
|
nkeynes@635 | 81 |
|
nkeynes@1159 | 82 | /** VBO/VAR handling (gl_vbo.c) ******/
|
nkeynes@1159 | 83 | void gl_vbo_init( display_driver_t driver );
|
nkeynes@1159 | 84 |
|
nkeynes@1159 | 85 | /* Set the fallback vertex buffer handling, for drivers with no GL */
|
nkeynes@1159 | 86 | void gl_vbo_fallback_init( display_driver_t driver );
|
nkeynes@1159 | 87 |
|
nkeynes@1258 | 88 | /** Initialize and load SL shaders */
|
nkeynes@1258 | 89 | gboolean glsl_init( display_driver_t driver );
|
nkeynes@1258 | 90 |
|
nkeynes@1258 | 91 | /** Initialise common GL functionality (FBO, SL, VBO)
|
nkeynes@1258 | 92 | * @param driver driver to be updated with appropriate calls
|
nkeynes@1258 | 93 | * @param need_fbo if TRUE, FBOs are required (ie main driver has no other way
|
nkeynes@1258 | 94 | * to construct an off-screen buffer)
|
nkeynes@1258 | 95 | * @return TRUE on success, FALSE if we couldn't setup a working context
|
nkeynes@1258 | 96 | */
|
nkeynes@1258 | 97 | gboolean gl_init_driver( display_driver_t driver, gboolean need_fbo );
|
nkeynes@1258 | 98 |
|
nkeynes@736 | 99 | #ifdef __cplusplus
|
nkeynes@736 | 100 | }
|
nkeynes@736 | 101 | #endif
|
nkeynes@736 | 102 |
|
nkeynes@736 | 103 | #endif /* !lxdream_video_gl_H */
|