nkeynes@635 | 1 | /**
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nkeynes@635 | 2 | * $Id$
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nkeynes@635 | 3 | *
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nkeynes@662 | 4 | * Common GL code that doesn't depend on a specific implementation
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nkeynes@635 | 5 | *
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nkeynes@635 | 6 | * Copyright (c) 2005 Nathan Keynes.
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nkeynes@635 | 7 | *
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nkeynes@635 | 8 | * This program is free software; you can redistribute it and/or modify
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nkeynes@635 | 9 | * it under the terms of the GNU General Public License as published by
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nkeynes@635 | 10 | * the Free Software Foundation; either version 2 of the License, or
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nkeynes@635 | 11 | * (at your option) any later version.
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nkeynes@635 | 12 | *
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nkeynes@635 | 13 | * This program is distributed in the hope that it will be useful,
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nkeynes@635 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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nkeynes@635 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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nkeynes@635 | 16 | * GNU General Public License for more details.
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nkeynes@635 | 17 | */
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nkeynes@635 | 18 |
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nkeynes@736 | 19 | #ifndef lxdream_video_gl_H
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nkeynes@736 | 20 | #define lxdream_video_gl_H 1
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nkeynes@736 | 21 |
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nkeynes@736 | 22 | #ifdef __cplusplus
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nkeynes@736 | 23 | extern "C" {
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nkeynes@736 | 24 | #endif
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nkeynes@635 | 25 |
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nkeynes@635 | 26 | /**
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nkeynes@635 | 27 | * Generic GL routine to draw the given frame buffer into a texture
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nkeynes@635 | 28 | */
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nkeynes@635 | 29 | gboolean gl_load_frame_buffer( frame_buffer_t frame, int tex_id );
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nkeynes@635 | 30 |
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nkeynes@635 | 31 | /**
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nkeynes@669 | 32 | * Reset the GL state to its initial values
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nkeynes@669 | 33 | */
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nkeynes@669 | 34 | void gl_reset_state();
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nkeynes@669 | 35 |
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nkeynes@669 | 36 | /**
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nkeynes@635 | 37 | * Generic GL routine to blank the display view with the specified colour.
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nkeynes@635 | 38 | */
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nkeynes@669 | 39 | void gl_display_blank( uint32_t colour );
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nkeynes@635 | 40 |
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nkeynes@635 | 41 | /**
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nkeynes@635 | 42 | * Write a rectangular texture (GL_TEXTURE_RECTANGLE_ARB) to the display frame
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nkeynes@635 | 43 | */
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nkeynes@635 | 44 | void gl_display_render_buffer( render_buffer_t buffer );
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nkeynes@635 | 45 |
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nkeynes@635 | 46 | /**
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nkeynes@635 | 47 | * Write a rectangular texture (GL_TEXTURE_RECTANGLE_ARB) to the display frame
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nkeynes@635 | 48 | */
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nkeynes@635 | 49 | void gl_texture_window( int width, int height, int tex_id, gboolean inverted );
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nkeynes@635 | 50 |
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nkeynes@635 | 51 | /**
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nkeynes@854 | 52 | * Convert window coordinates to dreamcast device coords (640x480) using the
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nkeynes@854 | 53 | * same viewable area as gl_texture_window.
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nkeynes@854 | 54 | * If the coordinates are outside the viewable area, the result is -1,-1.
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nkeynes@854 | 55 | */
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nkeynes@854 | 56 | void gl_window_to_system_coords( int *x, int *y );
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nkeynes@854 | 57 |
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nkeynes@854 | 58 | /**
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nkeynes@635 | 59 | * Generic GL read_render_buffer. This function assumes that the caller
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nkeynes@635 | 60 | * has already set the appropriate glReadBuffer(); in other words, unless
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nkeynes@635 | 61 | * there's only one buffer this needs to be wrapped.
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nkeynes@635 | 62 | */
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nkeynes@635 | 63 | gboolean gl_read_render_buffer( unsigned char *target, render_buffer_t buffer,
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nkeynes@736 | 64 | int rowstride, int colour_format );
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nkeynes@635 | 65 |
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nkeynes@635 | 66 |
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nkeynes@635 | 67 | /****** FBO handling (gl_fbo.c) ******/
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nkeynes@635 | 68 | gboolean gl_fbo_is_supported();
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nkeynes@635 | 69 | void gl_fbo_shutdown();
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nkeynes@635 | 70 | void gl_fbo_init( display_driver_t driver );
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nkeynes@635 | 71 | void gl_fbo_detach();
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nkeynes@635 | 72 |
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nkeynes@736 | 73 | #ifdef __cplusplus
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nkeynes@736 | 74 | }
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nkeynes@736 | 75 | #endif
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nkeynes@736 | 76 |
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nkeynes@736 | 77 | #endif /* !lxdream_video_gl_H */
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