Source:SLASH'EM 0.0.7E7F2/winGL.h

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Below is the full text to winGL.h from the source code of SLASH'EM 0.0.7E7F2. To link to a particular line, write [[SLASH'EM 0.0.7E7F2/winGL.h#line123]], for example.

The latest source code for vanilla NetHack is at Source code.


The NetHack General Public License applies to screenshots, source code and other content from NetHack.

This content was modified from the original NetHack source code distribution (by splitting up NetHack content between wiki pages, and possibly further editing). See the page history for a list of who changed it, and on what dates.

1.    /* Copyright (C) 2002 Andrew Apted <ajapted@users.sourceforge.net> */
2.    /* NetHack may be freely redistributed.  See license for details.  */
3.    
4.    /*
5.     * SDL/GL window port for NetHack & Slash'EM.
6.     *
7.     * This file contains the common definitions.
8.     */
9.    
10.   #ifndef WINGL_H
11.   #define WINGL_H
12.   
13.   #ifdef GL_GRAPHICS
14.   extern struct window_procs sdlgl_hardw_procs;
15.   #endif
16.   
17.   #ifdef SDL_GRAPHICS
18.   extern struct window_procs sdlgl_softw_procs;
19.   #endif
20.   
21.   extern void FDECL(Sdlgl_parse_options, (char *, int, int));
22.   
23.   #ifdef VANILLA_GLHACK
24.   #define GLHACK_VER_HEX  0x110
25.   #define GLHACK_VER_STR  "1.1"
26.   #define SDLGL_PROGRAM  "glHack"
27.   #define SDLGL_ICON     "glHack"
28.   #define SDLGL_ENV_VAR  "GLHACKOPTIONS"
29.   #else
30.   #define SDLGL_PROGRAM  "Slash'EM SDL/GL"
31.   #define SDLGL_ICON     "Slash'EM"
32.   #define SDLGL_ENV_VAR  "SLASHEMGLOPTIONS"
33.   #endif
34.   
35.   
36.   /* ------------ internal definitions from here on ---------- */
37.   
38.   #ifdef WINGL_INTERNAL
39.   
40.   /* sanity check the defines */
41.   #ifndef USE_TILES
42.   #error USE_TILES not defined
43.   #endif
44.   #ifndef CLIPPING
45.   #error CLIPPING not defined
46.   #endif
47.   #ifdef CHANGE_COLOR
48.   #error CHANGE_COLOR defined
49.   #endif
50.   #ifdef OVERLAY
51.   #error OVERLAY defined
52.   #endif
53.   #ifdef MICRO
54.   #error MICRO defined
55.   #endif
56.   
57.   /* N.H uses compress/uncompress, conflicting with ZLIB headers */
58.   #undef compress
59.   #undef uncompress
60.   
61.   /* certain N.H #defines conflict with the SDL header files */
62.   #undef red
63.   #undef green
64.   #undef blue
65.   
66.   /* From tile.c */
67.   extern short glyph2tile[];
68.   
69.   /* extra includes we need */
70.   
71.   #include <SDL/SDL.h>
72.   #include <png.h>
73.   #include <assert.h>
74.   
75.   #ifdef GL_GRAPHICS
76.   #include <GL/gl.h>
77.   #else
78.   typedef unsigned int GLuint;
79.   #endif
80.   
81.   #define E extern
82.   
83.   /* inlining */
84.   #ifdef GH_INLINE 
85.   /* keep current definition (from Makefile) */
86.   #elif defined(__GNUC__)
87.   #define GH_INLINE  __inline__
88.   #elif defined(_MSC_VER)
89.   #define GH_INLINE  __inline
90.   #else
91.   #define GH_INLINE  /* nothing */
92.   #endif
93.   
94.   /* character munging macros for CTRL and ALT/META */
95.   #ifndef C
96.   #define C(c)   (0x1f & (c))
97.   #endif
98.   #ifndef M
99.   #define M(c)   (0x80 | (c))
100.  #endif
101.  
102.  
103.  /*
104.   *  GL_MAIN
105.   */
106.  
107.  extern int sdlgl_initialized;
108.  extern int sdlgl_software;
109.  
110.  extern SDL_Surface *sdlgl_surf;
111.  
112.  struct MenuItem
113.  {
114.    /* link in list */
115.    struct MenuItem *next;
116.    
117.    /* stuff given by add_menu().  The string is copied */
118.    int glyph;
119.    anything identifier;
120.    char accelerator;
121.    char groupacc;
122.    int attr;
123.    char *str;
124.    
125.    /* whether or not this item is selected.  When 0, the `count' field
126.     * will be ignored.
127.     */
128.    int selected;
129.    
130.    /* count given by user.  -1 when no count given */
131.    int count;
132.  };
133.  
134.  struct TextItem
135.  {
136.    /* link in list */
137.    struct TextItem *next;
138.    
139.    /* stuff given by putstr().  The string is copied */
140.    int attr;
141.    char *str;
142.  
143.    /* alignment position (used for reformatting) */
144.    int align;
145.  };
146.  
147.  #define POSKEY_ALLOW_REPEAT   0x0001
148.  #define POSKEY_DO_SCROLLBACK  0x0002
149.  
150.  /* Note: routines that are in the interface table (sdlgl_procs) begin
151.   * with a capital `S'.  Everything else has a lowercase `s'.
152.   */
153.  E void FDECL(Sdlgl_init_nhwindows, (int *, char **));
154.  E void NDECL(Sdlgl_get_nh_event) ;
155.  E void FDECL(Sdlgl_exit_nhwindows, (const char *));
156.  E void FDECL(Sdlgl_suspend_nhwindows, (const char *));
157.  E void NDECL(Sdlgl_resume_nhwindows);
158.  E void NDECL(Sdlgl_update_inventory);
159.  E void NDECL(Sdlgl_mark_synch);
160.  E void NDECL(Sdlgl_wait_synch);
161.  E void FDECL(Sdlgl_raw_print, (const char *));
162.  E void FDECL(Sdlgl_raw_print_bold, (const char *));
163.  E int NDECL(Sdlgl_nhgetch);
164.  E int FDECL(Sdlgl_nh_poskey, (int *, int *, int *));
165.  E void NDECL(Sdlgl_nhbell);
166.  E void FDECL(Sdlgl_number_pad, (int));
167.  E void NDECL(Sdlgl_delay_output);
168.  
169.  E void VDECL(sdlgl_warning, (const char *, ...)) PRINTF_F(1,2);
170.  E void VDECL(sdlgl_error, (const char *, ...)) PRINTF_F(1,2);
171.  E void VDECL(sdlgl_hangup, (const char *, ...)) PRINTF_F(1,2);
172.  
173.  E void FDECL(sdlgl_sleep, (int));
174.  E int NDECL(sdlgl_get_time);
175.  E int FDECL(sdlgl_get_poskey, (int, int *, int *, int *));
176.  E int FDECL(sdlgl_get_key, (int));
177.  
178.  
179.  /*
180.   * GL_OPT
181.   */
182.  
183.  #define DEF_SDLGL_WIDTH   800
184.  #define DEF_SDLGL_HEIGHT  600
185.  #define DEF_SDLGL_DEPTH   16
186.  
187.  #define MIN_SDLGL_WIDTH   640
188.  #define MIN_SDLGL_HEIGHT  400
189.  #define MAX_SDLGL_WIDTH   2048
190.  #define MAX_SDLGL_HEIGHT  1536
191.  
192.  extern int sdlgl_width;
193.  extern int sdlgl_height;
194.  extern int sdlgl_depth;
195.  
196.  #define DEF_SDLGL_WINDOWED   0
197.  #define DEF_SDLGL_JAILSIZE   35
198.  #define DEF_SDLGL_KEYREPEAT  2  /* always */
199.  
200.  #define DEF_SDLGL_PREVSTEP   1
201.  #define MAX_SDLGL_PREVSTEP   20
202.  
203.  #define DEF_TILE_HEIGHT      32
204.  #define DEF_FONTSIZ_MAP      14
205.  #define DEF_FONTSIZ_TEXT     20
206.  #define DEF_VARY_MSGCOUNT    3
207.  #define DEF_SCROLL_MARGIN    3
208.  
209.  /* sdlgl_def_zoom can take on this value (text-mode view) */
210.  #define TEXT_ZOOM  -1
211.  
212.  extern int sdlgl_windowed;
213.  extern int sdlgl_jail_size;
214.  extern int sdlgl_def_zoom;
215.  extern int sdlgl_key_repeat;
216.  extern int sdlgl_alt_prev;
217.  extern int sdlgl_prev_step;
218.  extern int sdlgl_msg_dim;
219.  extern int sdlgl_reformat;
220.  extern int sdlgl_shrink_wrap;
221.  extern int sdlgl_flipping;
222.  extern int sdlgl_jump_scroll;
223.  extern int sdlgl_invis_fx;
224.  extern int sdlgl_gamma;
225.  
226.  E void FDECL(sdlgl_parse_cmdline_options, (int *, char **));
227.  E void NDECL(sdlgl_validate_wincap_options);
228.  E void NDECL(sdlgl_validate_gl_options);
229.  E void FDECL(Sdlgl_preference_update, (const char *));
230.  
231.  
232.  /*
233.   * GL_CONF
234.   */
235.  
236.  /* (nothing here yet) */
237.  
238.  
239.  /*
240.   * GL_ROLE
241.   */
242.  
243.  E void NDECL(Sdlgl_player_selection);
244.  
245.  
246.  /*
247.   * GL_UNIT
248.   */
249.  
250.  extern int sdlgl_tex_max;
251.  
252.  typedef unsigned int rgbcol_t;
253.  
254.  #define RGB_MAKE(r,g,b)  (((r) << 16) + ((g) << 8) + (b))
255.   
256.  #define RGB_RED(rgb)  ((rgb >> 16) & 0xFF)
257.  #define RGB_GRN(rgb)  ((rgb >>  8) & 0xFF)
258.  #define RGB_BLU(rgb)  ((rgb      ) & 0xFF)
259.  
260.  struct GraphicUnit
261.  {
262.    /* texture used */
263.    GLuint tex_id;
264.  
265.    /* texture coords */
266.    float tx1, ty1, tx2, ty2;
267.      
268.    /* screen coordinates */
269.    short x, y, w, h;
270.  
271.    /* rendering pass (lower ones are drawn first) */
272.    short pass;
273.  
274.    /* image color */
275.    rgbcol_t color;
276.  
277.    /* translucency, range is 0.0 - 1.0 */
278.    float trans;
279.  };
280.  
281.  E void NDECL(sdlgl_unit_startup);
282.  E void NDECL(sdlgl_unit_shutdown);
283.  
284.  E void FDECL(sdlgl_begin_units, (int, int));
285.  E void FDECL(sdlgl_add_unit, (GLuint,float,float,float,float,
286.        short,short,short,short,short,rgbcol_t,float));
287.  E void NDECL(sdlgl_finish_units);
288.  
289.  E void FDECL(sdlgl_hw_make_screenshot, (const char *));
290.  
291.  
292.  /*
293.   * GL_TILE
294.   */
295.  
296.  typedef unsigned short tileidx_t;
297.  typedef unsigned short tilecol_t;
298.  typedef unsigned short tileflags_t;
299.  
300.  #define TILE_EMPTY  0x7FFF
301.  
302.  #define TILE_F_FLIPX    0x0001  /* horizontally flip the fg */
303.  #define TILE_F_TRANS50  0x0010  /* draw fg 50% translucent */
304.  
305.  struct TilePair
306.  {
307.    /* What tiles to draw at each location.  Any of these can be
308.     * TILE_EMPTY.  BG contains the actual background (usually a floor,
309.     * maybe water).  MG is for dungeon parts (walls, stairs, sinks,
310.     * traps, and so forth).  FG contains everything else: objects,
311.     * monsters, zaps and swallows.
312.     */
313.   
314.    tileidx_t fg;
315.    tileidx_t mg;  /* mid-ground */
316.  
317.    union
318.    {
319.      tilecol_t col;
320.      tileidx_t bg;
321.    }
322.    u;
323.  
324.    tileflags_t flags;
325.  };
326.  
327.  struct FontCache;
328.  
329.  struct TileSet
330.  {
331.    /* total number of tiles in the set */
332.    int tile_num;
333.  
334.    /* size of each tile */
335.    int tile_w, tile_h;
336.  
337.    /* overlap size.  Only non-zero for the pseudo 3D tileset.  lap_skew
338.     * is the difference (of horizontal pixels) between to rows.
339.     */
340.    int lap_w, lap_h;
341.    int lap_skew;
342.  
343.    /* number of tiles horizontal/vertical that fit in each 256x256
344.     * image (or whatever size the 3D card supports).  Tiles are packed
345.     * from left->right, bottom->top.  For software mode, the tiles are
346.     * all packed in a single surface.
347.     */
348.    int pack_w, pack_h;
349.  
350.    /* number of 256x256 images */
351.    int tex_num;
352.  
353.    /* the GL texture ids.  Unused in software mode */
354.    GLuint *tex_ids;
355.  
356.    /* for GL, the size of all textures in the array.  Usually these
357.     * will be the same as sdlgl_tex_max, but when sdlgl_tex_max is high
358.     * (like 1024) and the tileset is small (like the fonts), then the
359.     * size can be reduced to save memory.
360.     */
361.    int tex_size_w, tex_size_h;
362.  
363.    /* which tiles have alpha parts.  Valid for both GL and software
364.     * rendering.
365.     */
366.    unsigned char *has_alpha;
367.  
368.    /* for Software mode, this surface contains the tiles.  When using
369.     * large tilesets (32x32 and 48x64), surf_small contains the
370.     * shrunk-down version (otherwise it is NULL).
371.     */
372.    SDL_Surface *surf;
373.    SDL_Surface *surf_small;
374.  
375.    /* when using the Isometric tileset in software mode, these contain
376.     * some extra tiles to draw the map borders.  (Needed since the
377.     * dirty matrix code doesn't support drawing diagonal lines).
378.     */
379.    SDL_Surface *borders;
380.    SDL_Surface *borders_small;
381.  
382.    /* fonts are normally bright white.  For software mode, we need to
383.     * colorise them, and this is done by the font cache.  This is
384.     * unused in GL mode.
385.     */
386.    struct FontCache *font_cache;
387.  };
388.  
389.  struct ExtraShape
390.  {
391.    /* type of extra shape */
392.    enum ShapeType
393.    {
394.      SHAPE_None = 0,
395.      SHAPE_Heart,
396.      SHAPE_Ridden
397.    }
398.    type;
399.   
400.    /* position of shape, in terms of whole tiles */
401.    short x, y;
402.    
403.    /* type-dependent parameters.
404.     * For SHAPE_Heart and SHAPE_Ridden, par1 means "on_left".
405.     */
406.    int par1, par2;
407.  };
408.  
409.  struct TileWindow
410.  {
411.    /* types of tiles drawn in this window */
412.    struct TileSet *set;
413.  
414.    /* width and height of this window (in tiles).  Can be larger than
415.     * the screen.
416.     */
417.    int total_w, total_h;
418.  
419.    /* on-screen position of window (in pixels).  All values are 0 when
420.     * the window is unmapped.  Mapped windows are drawn in order of
421.     * their depth value (lower depths are drawn first).
422.     */
423.    int scr_x, scr_y, scr_w, scr_h, scr_depth;
424.  
425.    /* private field -- index of window in mapped array */
426.    int mapped_idx;
427.   
428.    /* text window ? */
429.    int is_text;
430.  
431.    /* this is the map window ? */
432.    int is_map;
433.  
434.    /* does the window have see-through parts ?  This is normally false.
435.     * Only used for text on the tombstone currently.  When true, lower
436.     * windows don't get clipped against this one, and _no_ background
437.     * is drawn.
438.     */
439.    int see_through;
440.  
441.    /* for see-through windows, whether to blend in the text (needed for
442.     * the RIP image).
443.     */
444.    int is_blended;
445.  
446.    /* background color.  When the tiles don't take up all of the
447.     * window's area, this color fills in the unused portions.  Also
448.     * used for text background.
449.     */
450.    rgbcol_t background;
451.  
452.    /* used for panning.  The values represent an offset (in screen
453.     * pixels) into the array.  Larger pan_x values shift the tiles
454.     * further left.  Larger pan_y values shift the tiles further
455.     * downwards.  (negative values are useful too).
456.     */
457.    int pan_x, pan_y;
458.    
459.    /* used for zooming.  The values represent the displayed size of
460.     * each tile (in screen pixels).  For NHW_MAP windows using the
461.     * pseudo 3D tileset, scale_w/h *ignore* the overlap portion of the
462.     * tiles (i.e. they give the stepping distance), and scale_full_w/h
463.     * give the size of the full tile.  For all tilesets except the
464.     * pseudo 3D one, the full_* values equal the plain values.
465.     */
466.    int scale_w, scale_h;
467.    int scale_full_w, scale_full_h;
468.    int scale_skew;
469.  
470.    /* the position (in terms of tiles) where to draw a cursor.
471.     * Negative values mean that no cursor should be drawn.
472.     */
473.    int curs_x, curs_y, curs_w;
474.   
475.    /* cursor type: 1 for block, 0 for outline */
476.    int curs_block;
477.     
478.    /* cursor color */
479.    rgbcol_t curs_color;
480.  
481.    /* the array of tile indexes.  Order is left->right, bottom->top.
482.     * For text windows, the values are characters (the charset is IBM
483.     * cp437, i.e. standard CGA/VGA), and the color field is used.  For
484.     * the MAP window, the `bg' field in the TilePair is used as the
485.     * background tile.
486.     *
487.     * The color field contains the foreground in the least significant
488.     * 8 bits, background in the most significant 8 bits.  Both are
489.     * indices into sdlgl_text_colors[].  NOTE: background color not
490.     * actually used yet (if ever).
491.     */
492.    struct TilePair *tiles;
493.  
494.    /* set of extra shapes to draw */
495.    struct ExtraShape *extra_shapes;
496.    int extra_max;
497.    int extra_num;
498.  
499.    /* used for the map window to draw a border around it */
500.    int has_border;
501.  };
502.  
503.  extern struct TileSet *sdlgl_tiles;
504.  
505.  E void NDECL(sdlgl_tile_startup);
506.  E void NDECL(sdlgl_tile_shutdown);
507.  E void NDECL(sdlgl_tile_load_rest);
508.  E void NDECL(sdlgl_start_logo);
509.  E int NDECL(sdlgl_iterate_logo);
510.  E int FDECL(sdlgl_display_RIP, (int));
511.  E void NDECL(sdlgl_dismiss_RIP);
512.  
513.  E struct TileWindow *FDECL(sdlgl_new_tilewin,
514.      (struct TileSet *, int, int, int, int));
515.  E void FDECL(sdlgl_map_tilewin,
516.      (struct TileWindow *, int, int, int, int, int));
517.  E void FDECL(sdlgl_unmap_tilewin, (struct TileWindow *));
518.  E void FDECL(sdlgl_free_tilewin, (struct TileWindow *));
519.  E void FDECL(sdlgl_change_tileset, (struct TileWindow *,
520.        struct TileSet *, int));
521.  E void NDECL(sdlgl_flush);
522.  
523.  E void FDECL(sdlgl_add_extrashape, (struct TileWindow *,
524.        enum ShapeType, short, short, int, int));
525.  E void FDECL(sdlgl_remove_extrashapes, (struct TileWindow *,
526.        short, short));
527.  E int FDECL(sdlgl_test_tile_visible, (int, int, int, int, int));
528.  E void FDECL(sdlgl_set_start_depth, (int));
529.  
530.  E void FDECL(sdlgl_store_char, (struct TileWindow *, int, int,
531.        char, rgbcol_t));
532.  E int FDECL(sdlgl_store_str, (struct TileWindow *, int, int,
533.        const char *, int, rgbcol_t));
534.  E void FDECL(sdlgl_store_tile, (struct TileWindow *, int, int,
535.        tileidx_t, tileidx_t, tileidx_t, tileflags_t));
536.  E void FDECL(sdlgl_blank_area, (struct TileWindow *, int, int, int, int));
537.  E void FDECL(sdlgl_copy_area, (struct TileWindow *, int, int,
538.        int, int, int, int));
539.  E void FDECL(sdlgl_transfer_area, (struct TileWindow *, int, int,
540.        int, int, struct TileWindow *, int, int));
541.  E void FDECL(sdlgl_transfer_line, (struct TileWindow *, int, int,
542.        int, struct TilePair *, int));
543.  E void FDECL(sdlgl_set_scale, (struct TileWindow *, int));
544.  E void FDECL(sdlgl_set_cursor, (struct TileWindow *, int, int, int));
545.  
546.  
547.  /*
548.   * GL_IMAGE
549.   */
550.  
551.  extern unsigned char pet_mark_bits[8];
552.  extern unsigned char ridden_mark_bits[8];
553.  
554.  extern char tile_16_face_dirs[1000];
555.  extern char tile_32_face_dirs[1000];
556.  
557.  extern SDL_Cursor *sdlgl_cursor_main;
558.  extern SDL_Cursor *sdlgl_cursor_left;
559.  extern SDL_Cursor *sdlgl_cursor_right;
560.  extern SDL_Cursor *sdlgl_cursor_up;
561.  extern SDL_Cursor *sdlgl_cursor_down;
562.  extern SDL_Cursor *sdlgl_cursor_hand;
563.  extern SDL_Cursor *sdlgl_cursor_cross;
564.  
565.  extern unsigned char sdlgl_gamma_table[256];
566.  
567.  #define GAMMA(n)    (sdlgl_gamma_table[n])
568.  #define GAMMA_F(n)  ((float)GAMMA(n) / 255.0)
569.  
570.  E int FDECL(sdlgl_quantize_tile_size, (int));
571.  E int FDECL(sdlgl_mon_tile_face_dir, (tileidx_t));
572.  E void NDECL(sdlgl_generate_gamma_table);
573.  E void NDECL(sdlgl_init_mouse_cursors);
574.  E void NDECL(sdlgl_free_mouse_cursors);
575.  
576.  E void FDECL(sdlgl_load_face_dirs, (const char *, char *));
577.  E unsigned char * FDECL(sdlgl_load_png_file, (const char*, int*, int*));
578.  E int FDECL(sdlgl_save_ppm_file, (const char *, const unsigned char *,
579.        int, int));
580.  
581.  
582.  /*
583.   * GL_FONT
584.   */
585.  
586.  #define CHAR_2_TILE(ch)  ((tileidx_t)(unsigned char)(ch))
587.  #define TILE_2_CHAR(t)   ((unsigned char)(t))
588.  
589.  #define TXT_MAKE(r,g,b)  ((r)*25 + (g)*5 + (b))
590.  
591.  #define TXT_GET_R(txt)   (((txt) / 25) % 5)
592.  #define TXT_GET_G(txt)   (((txt) / 5)  % 5)
593.  #define TXT_GET_B(txt)   (((txt)    )  % 5)
594.  
595.  #define BLACK      TXT_MAKE(0,0,0)
596.  #define D_GREY     TXT_MAKE(1,1,1)
597.  #define GREY       TXT_MAKE(2,2,2)
598.  #define L_GREY     TXT_MAKE(3,3,3)
599.  #define WHITE      TXT_MAKE(4,4,4)
600.  
601.  #define RED        TXT_MAKE(3,0,0)
602.  #define BROWN      TXT_MAKE(3,2,0)
603.  #define GREEN      TXT_MAKE(0,3,0)
604.  #define CYAN       TXT_MAKE(0,3,3)
605.  #define BLUE       TXT_MAKE(0,0,3)
606.  #define MAGENTA    TXT_MAKE(3,0,3)
607.  
608.  #define B_RED      TXT_MAKE(4,0,0)
609.  #define B_YELLOW   TXT_MAKE(4,4,0)
610.  #define B_ORANGE   TXT_MAKE(4,3,0)
611.  #define B_GREEN    TXT_MAKE(0,4,0)
612.  #define B_CYAN     TXT_MAKE(0,4,4)
613.  #define B_BLUE     TXT_MAKE(0,0,4)
614.  #define B_MAGENTA  TXT_MAKE(4,0,4)
615.  
616.  #define TILECOL_UNUSED  0x7EEE
617.  
618.  struct FontCache
619.  {
620.    /* cache size (total number of characters on surface) */
621.    int char_num;
622.  
623.    SDL_Surface *char_surf;
624.  
625.    /* how the characters are packed in the surface */
626.    int pack_w, pack_h;
627.  
628.    /* what color each character in the cache currently is.  Initially
629.     * all values are TILECOL_UNUSED.
630.     */
631.    tilecol_t *what_cols;
632.  };
633.  
634.  #define FONTCACHE_SIZE    512
635.  #define FONTCACHE_PACK_W  32
636.  
637.  /* this hash function has been carefully chosen so that the two most
638.   * used colors (L_GREY and GREY) have no collisions.
639.   */
640.  #define FONTCACHE_HASH(ch,col)  (int) \
641.      (TXT_GET_R(col) * 41 + TXT_GET_G(col) * 31 + \
642.       TXT_GET_B(col) * 23 + 2 * (unsigned int) ch)
643.  
644.  extern tilecol_t termcolor_to_tilecol[CLR_MAX];
645.  
646.  /* colors used for text.  Index 0 guaranteed to be black */
647.  extern rgbcol_t sdlgl_text_colors[256];
648.  
649.  extern struct TileSet *sdlgl_font_8;  /* 8x8 (rip) font */
650.  
651.  extern struct TileSet *sdlgl_font_map;
652.  extern struct TileSet *sdlgl_font_text;
653.  extern struct TileSet *sdlgl_font_menu;
654.  extern struct TileSet *sdlgl_font_message;
655.  extern struct TileSet *sdlgl_font_status;
656.  
657.  E void NDECL(sdlgl_font_startup);
658.  E void NDECL(sdlgl_font_shutdown);
659.  E int FDECL(sdlgl_quantize_font, (int));
660.  E struct TileSet *FDECL(sdlgl_next_narrower_font, (int));
661.  
662.  
663.  /*
664.   * GL_HARDW / GL_SOFTW
665.   *
666.   * (Rendering API)
667.   */
668.  struct rendering_procs
669.  {
670.    void NDECL((*rend_startup));
671.    void NDECL((*rend_shutdown));
672.    struct TileSet *FDECL((*load_tileset),
673.        (const char *, int, int, int, int, int *, int *));
674.    void FDECL((*free_tileset), (struct TileSet *));
675.    void NDECL((*create_extra_graphics));
676.    void NDECL((*free_extra_shapes));
677.  
678.    void FDECL((*enable_clipper), (int, int, int, int));
679.    void NDECL((*disable_clipper));
680.    void NDECL((*blit_frame));
681.  
682.    void FDECL((*draw_background), (int, int, int, int, rgbcol_t,
683.        int, int));
684.    void FDECL((*draw_extra_shape), (struct TileWindow *,
685.        struct ExtraShape *));
686.    void FDECL((*draw_cursor), (struct TileWindow *));
687.    void FDECL((*begin_tile_draw), (int, int));
688.    void FDECL((*draw_tile), (struct TileWindow *, int, int,
689.        int, int, tileidx_t, tilecol_t, tileflags_t, short));
690.    void NDECL((*finish_tile_draw));
691.    void FDECL((*draw_border), (struct TileWindow *, rgbcol_t));
692.  
693.    void FDECL((*start_fading), (int, int));
694.    void FDECL((*draw_fading), (float));
695.    void NDECL((*finish_fading));
696.    void FDECL((*make_screenshot), (const char *));
697.  
698.    void FDECL((*set_pan), (struct TileWindow *, int, int));
699.    void FDECL((*set_new_pos), (struct TileWindow *, int, int, int, int));
700.    void FDECL((*mark_dirty), (int, int, int, int, int));
701.  };
702.  
703.  extern struct rendering_procs sdlgl_rend_procs;
704.  
705.  #ifdef GL_GRAPHICS
706.  extern struct rendering_procs sdlgl_hardw_rend_procs;
707.  #endif
708.  
709.  #ifdef SDL_GRAPHICS
710.  extern struct rendering_procs sdlgl_softw_rend_procs;
711.  #endif
712.  
713.  #define sdlgl_rend_startup  (*sdlgl_rend_procs.rend_startup)
714.  #define sdlgl_rend_shutdown (*sdlgl_rend_procs.rend_shutdown)
715.  #define sdlgl_load_tileset  (*sdlgl_rend_procs.load_tileset)
716.  #define sdlgl_free_tileset  (*sdlgl_rend_procs.free_tileset)
717.  #define sdlgl_create_extra_graphics (*sdlgl_rend_procs.create_extra_graphics)
718.  #define sdlgl_free_extra_shapes (*sdlgl_rend_procs.free_extra_shapes)
719.  #define sdlgl_enable_clipper   (*sdlgl_rend_procs.enable_clipper)
720.  #define sdlgl_disable_clipper  (*sdlgl_rend_procs.disable_clipper)
721.  #define sdlgl_blit_frame  (*sdlgl_rend_procs.blit_frame)
722.  #define sdlgl_draw_background  (*sdlgl_rend_procs.draw_background)
723.  #define sdlgl_draw_extra_shape (*sdlgl_rend_procs.draw_extra_shape)
724.  #define sdlgl_draw_cursor      (*sdlgl_rend_procs.draw_cursor)
725.  #define sdlgl_begin_tile_draw  (*sdlgl_rend_procs.begin_tile_draw)
726.  #define sdlgl_draw_tile        (*sdlgl_rend_procs.draw_tile)
727.  #define sdlgl_finish_tile_draw (*sdlgl_rend_procs.finish_tile_draw)
728.  #define sdlgl_draw_border   (*sdlgl_rend_procs.draw_border)
729.  #define sdlgl_start_fading  (*sdlgl_rend_procs.start_fading)
730.  #define sdlgl_draw_fading   (*sdlgl_rend_procs.draw_fading)
731.  #define sdlgl_finish_fading (*sdlgl_rend_procs.finish_fading)
732.  #define sdlgl_make_screenshot (*sdlgl_rend_procs.make_screenshot)
733.  #define sdlgl_set_pan       (*sdlgl_rend_procs.set_pan)
734.  #define sdlgl_set_new_pos   (*sdlgl_rend_procs.set_new_pos)
735.  #define sdlgl_mark_dirty    (*sdlgl_rend_procs.mark_dirty)
736.  
737.  #ifdef GL_GRAPHICS
738.  E GLuint FDECL(sdlgl_send_graphic_RGBA, (unsigned char *, int, int));
739.  #endif
740.  
741.  
742.  /*
743.   * GL_RENDU
744.   */
745.  
746.  #define TRANS_PIX  255  /* 8 bit transparent pixel */
747.  
748.  extern rgbcol_t sdlgl_palette[256];
749.  
750.  #define DIRTY_SIZE   64
751.  #define CLEAN_CELL   0x7F
752.  
753.  struct DirtyMatrix
754.  {
755.    /* pixel size that matrix covers (screen size) */
756.    int pw, ph;
757.  
758.    /* matrix size (in cells), enough to cover the screen */
759.    int cw, ch;
760.  
761.    /* cell matrix.  Each cell is either CLEAN_CELL, or the depth of the
762.     * window that became dirty somewhere inside the cell.  If multiple
763.     * windows get dirty in the same cell, the *lowest* depth is
764.     * remembered.  
765.     *
766.     * Note: using a high value of CLEAN_CELL is a nice trick,
767.     *       simplifying the marking and testing code.
768.     */
769.    unsigned char *cells;
770.  
771.    /* rectangles used to update screen.  Worst case scenario is
772.     * slightly over half the total number of cells.
773.     */
774.    int max_rects;
775.  
776.    SDL_Rect *updaters;
777.  };
778.  
779.  E void FDECL(sdlgl_set_surface_colors, (SDL_Surface *));
780.  E SDL_Surface *FDECL(sdlgl_RGBA_to_truecolor, (unsigned char *,
781.          int, int));
782.  E SDL_Surface *FDECL(sdlgl_RGBA_to_palettised, (unsigned char *,
783.          int, int));
784.  E SDL_Surface *FDECL(sdlgl_shrink_surface, (SDL_Surface *));
785.  E void FDECL(sdlgl_sw_create_has_alpha, (struct TileSet *));
786.  
787.  E void FDECL(sdlgl_create_font_cache, (struct TileSet *));
788.  E void FDECL(sdlgl_free_font_cache, (struct TileSet *));
789.  E void FDECL(sdlgl_font_cache_lookup, (struct TileSet *, tileidx_t,
790.          tilecol_t, int *, int *));
791.  
792.  E struct DirtyMatrix *FDECL(sdlgl_create_dirty_matrix, (int, int));
793.  E void FDECL(sdlgl_free_dirty_matrix, (struct DirtyMatrix *));
794.  E void FDECL(sdlgl_dirty_matrix_clear, (struct DirtyMatrix *));
795.  E void FDECL(sdlgl_dirty_matrix_add, (struct DirtyMatrix *, int, int,
796.        int, int, int));
797.  E int FDECL(sdlgl_dirty_matrix_test, (struct DirtyMatrix *, int, int,
798.        int, int, int));
799.  E int FDECL(sdlgl_dirty_matrix_to_updaters, (struct DirtyMatrix *));
800.  E void FDECL(sdlgl_dirty_matrix_blit, (struct DirtyMatrix *, 
801.        SDL_Surface *, SDL_Rect *, SDL_Rect *, Uint32, int));
802.  
803.  
804.  /*
805.   * GL_WIN
806.   */
807.  
808.  #define MAXWIN  20
809.  
810.  /* active NHW_TEXT/NHW_MENU window, otherwise WIN_ERR */
811.  extern int sdlgl_top_win;
812.  
813.  /* active NHW_MAP window, otherwise WIN_ERR */
814.  extern int sdlgl_map_win;
815.  
816.  #define MIN_MESSAGE  2
817.  #define MAX_MESSAGE  8
818.  
819.  #define MIN_HISTORY  10
820.  #define MAX_HISTORY  200   /* max history saved on message window */
821.  
822.  typedef unsigned short glyphidx_t;
823.  
824.  struct GlyphPair
825.  {
826.    /* background and foreground glyphs.  One or both may be NO_GLYPH.
827.     * FG is only for objects/monsters/etc, and BG is only for dungeon
828.     * glyphs (CMAP).
829.     */
830.    glyphidx_t bg, fg;
831.  };
832.  
833.  #define MENU_NONE_COL  RGB_MAKE(48, 48, 48)
834.  #define MENU_ONE_COL   RGB_MAKE(16, 32, 48)
835.  #define MENU_ANY_COL   RGB_MAKE(0,  0,  48)
836.  #define TEXT_BACK_COL  RGB_MAKE(0,  0,  48)
837.  #define PREV_BACK_COL  RGB_MAKE(48, 24,  0)
838.  
839.  #define BORDER_COL     RGB_MAKE(0,  0,  96)
840.  #define CURSOR_COL     RGB_MAKE(192, 0, 0)
841.  #define OUTLINE_COL    RGB_MAKE(255, 255, 255)
842.  
843.  
844.  struct MouseLocation
845.  {
846.    /* what the action should be at the current location.  This also
847.     * indicates what the mouse cursor should look like.  When the mouse
848.     * is outside the window (or when focus has been lost), then the
849.     * MACT_AWAY value is used.
850.     */
851.    enum MouseLocAction
852.    {
853.      MACT_NORMAL = 0,
854.      MACT_AWAY,
855.      MACT_UP, MACT_DOWN, MACT_LEFT, MACT_RIGHT,
856.      MACT_HAND, MACT_CROSS
857.    }
858.    action;
859.  
860.    /* pixel position of mouse cursor.  The coordinates are GL style
861.     * (i.e. y goes from the bottom up).
862.     */
863.    int x, y;
864.    
865.    /* the window that the mouse pointer is currently over.  Will be
866.     * WIN_ERR when not sitting over any window, e.g. a gap, or when the
867.     * focus has been lost.
868.     */
869.    int window;
870.  };
871.  
872.  extern struct MouseLocation sdlgl_mouseloc;
873.  
874.  
875.  struct TextWindow
876.  {
877.    /* type (one of NHW_XXX) */
878.    int type;
879.  
880.    /* for NHW_MENU types: whether this window is being used as an
881.     * actual menu or just for text.  Will be -1 until the
882.     * distinguishing call (start_menu | putstr) has been made.
883.     */
884.    int is_menu;
885.  
886.    /* is this window (NHW_TEXT type) used for the RIP message ? */
887.    int is_rip;
888.    int how_died;
889.    
890.    /* linked list of menu items.  Only valid when is_menu == 1.  Note
891.     * that this list goes upwards from the bottom of the window (not
892.     * top-down, as you might expect).
893.     */
894.    struct MenuItem *items;
895.    
896.    /* linked list of text items.  Only valid when type is NHW_TEXT, or
897.     * NHW_MENU and is_menu == 0.  This one also goes upwards.
898.     */
899.    struct TextItem *lines;
900.    
901.    /* computed width & height of the menu or text window.  For menus
902.     * (is_menu == 1), it's only valid after the end_menu() interface
903.     * routine has been called.  For text items, it is computed when
904.     * displayed.
905.     */
906.    int calc_w, calc_h;
907.  
908.    /* for menu/text windows, the number of tiles that completely fit on
909.     * the screen at any one time.  For small windows, this'll be the
910.     * same as calc_w/h.  Also valid for NHW_MESSAGE/STATUS windows.
911.     */
912.    int show_w, show_h;
913.  
914.    /* based on a tile window.  This is NULL while the window is
915.     * unmapped (i.e. display_nhwindow hasn't been called).
916.     */
917.    struct TileWindow *base;
918.  
919.    /* only valid for NHW_MAP windows, and then only when mapped.
920.     * Stores a record of all the glyphs on the map.  The size is
921.     * exactly the same as in the `base' field.
922.     */
923.    struct GlyphPair *glyphs;
924.   
925.    /* tile coordinates for the "focus", which (for NHW_MAP windows) is
926.     * the tile that controls where the jail is (usually the focus is
927.     * where the player tile is).
928.     *
929.     * For other window types, this is the tile to show at the bottom
930.     * left corner of the window.
931.     */
932.    int focus_x, focus_y;
933.  
934.    /* panning values for NHW_MAP windows.  Remembers the pan state of
935.     * graphical tiles when the text-mode view is active.
936.     */
937.    int map_px, map_py;
938.   
939.    /* the JAIL...  This is an rectangular area that is meant to be kept
940.     * at the middle of the screen.  The player can move freely within
941.     * the jail without the map window panning -- when the player moves
942.     * outside of the jail, the map window will usually pan.
943.     *
944.     * The jail is mostly implicit (size calc'd from sdlgl_jail_size).
945.     * Here is the offset (in pixels) from center of screen to jail's
946.     * center.  The jail is allowed to be uncentered on the screen,
947.     * though it should auto-correct itself, i.e. move closer to the
948.     * center instead of panning.  The jail (in pixel terms) must always
949.     * fit on the screen.  Hence when jail size is 100%, these offsets
950.     * are always zero.
951.     *
952.     * The jail is not used when in text-mode view (determined by
953.     * base->is_text), as we assume the whole map fits on the screen.
954.     */
955.    int jail_x, jail_y;
956.   
957.    /* current zoom factor.  Only used with NHW_MAP windows.
958.     * The value is the pixel height that the tiles are rendered at, so
959.     * higher values mean larger tiles.  The allowable sizes depends on
960.     * what tileset is being used and whether we are using GL or
961.     * Software rendering.  Not used when in text-mode view (i.e.
962.     * base->is_text is set) as we assume the whole map fits on the
963.     * screen.  Invariant: zoom_h != TEXT_ZOOM.
964.     */
965.    int zoom_h;
966.  
967.    /* For NHW_MAP windows, this field remembers which direction the
968.     * player was travelling in.  Used for the tile flipping option.
969.     */
970.    int player_dx;
971.    int player_dy;
972.  
973.    /* the current write position (in terms of tiles).  Must always be
974.     * inside the tile window area.  Order same as tiles: left->right,
975.     * bottom->top.
976.     */
977.    int write_x, write_y;
978.  
979.    /* whether we show a cursor at the current write position.  Also
980.     * used for NHW_MAP windows for cursor on player.
981.     */
982.    int write_cursor;
983.  
984.    /* current writing color */
985.    tilecol_t write_col;
986.  
987.    /* current filling color (for clear_screen, etc) */
988.    tilecol_t fill_col;
989.  
990.    /* for NHW_MESSAGE windows: number of "fresh" lines, i.e. lines that
991.     * have been written onto the message window since clear_nhwindow()
992.     * or the last do_more().  Initial state is 0, meaning "blank".
993.     * After a [More] it is also 0.  As soon as this value becomes the
994.     * same as the `show_h' field, that's when we display the more text
995.     * and wait for a key.
996.     *
997.     * Note: Other routines that use the MESSAGE window (e.g. getlin)
998.     * should also call sdlgl_more() when this value is non-zero.
999.     */
1000.   int fresh_lines;
1001. 
1002.   /* for NHW_MESSAGE windows: true if the next putstr() should be
1003.    * placed on a new line, even if it fits on the previous one.
1004.    */
1005.   int want_new_line;
1006.  
1007.   /* for NHW_MESSAGE windows: this field is for the scroll-back
1008.    * capability (^P).  The tile window is normally unmapped, silently
1009.    * recording lines that scroll off the screen (except empty lines).
1010.    * Clearing the msg window is equivalent to fully scrolling it up.
1011.    */
1012.   struct TileWindow *scrollback;
1013. 
1014.   /* when true, scrolled-off lines are copied to the scrollback
1015.    * buffer.  This is disabled when routines that take over the
1016.    * message window (get_ext_cmd, etc) are active.
1017.    */
1018.   int scrollback_enable;
1019.  
1020.   /* this is 0 if the scrollback window is unmapped.  This value only
1021.    * used in the `alt_prev' mode, and signifies how many lines back we
1022.    * are showing.
1023.    */
1024.   int scrollback_pos;
1025. 
1026.   /* number of non-blank lines currently in the scrollback window.
1027.    * Used to limit the scrollback to readable stuff.
1028.    */
1029.   int scrollback_size;
1030. 
1031.   /* for NHW_MESSAGE windows, these fields handle the message_menu()
1032.    * hack.  When dismiss_more is non-zero, it is a character that can
1033.    * be used to accept the single choice while [MORE] is displayed
1034.    * (setting the more_ch).
1035.    */
1036.   int dismiss_more;
1037.   int more_ch;
1038. 
1039.   /* for NHW_MESSAGE windows, this will be set when the user pressed
1040.    * the Escape key to dismiss the more.  It should be cleared before
1041.    * every turn, and when certain interface functions are called
1042.    * (message_menu, etc).  It is used to prevent further [MORE]
1043.    * prompts (the TTY version also stops further output to the message
1044.    * window, but I'd prefer to see them).
1045.    */
1046.   int more_escaped;
1047. };
1048. 
1049. extern struct TextWindow *text_wins[MAXWIN];
1050. 
1051. E winid FDECL(Sdlgl_create_nhwindow, (int));
1052. E void FDECL(Sdlgl_clear_nhwindow, (winid));
1053. E void FDECL(Sdlgl_display_nhwindow, (winid, BOOLEAN_P));
1054. E void FDECL(Sdlgl_dismiss_nhwindow, (winid));
1055. E void FDECL(Sdlgl_destroy_nhwindow, (winid));
1056. E void FDECL(Sdlgl_curs, (winid,int,int));
1057. E void FDECL(Sdlgl_putstr, (winid, int, const char *));
1058. E void FDECL(Sdlgl_outrip, (winid,int));
1059. E int NDECL(Sdlgl_doprev_message);
1060. 
1061. E void NDECL(sdlgl_win_startup);
1062. E void NDECL(sdlgl_win_shutdown);
1063. E void FDECL(sdlgl_more, (struct TextWindow *));
1064. E void FDECL(sdlgl_adjust_scrollback, (struct TextWindow *, int));
1065. E void NDECL(sdlgl_remove_scrollback);
1066. E void FDECL(sdlgl_pan_window, (int, int, int));
1067. E tilecol_t FDECL(sdlgl_attr_to_tilecol, (int attr));
1068. E void FDECL(sdlgl_update_mouse_location, (int));
1069. 
1070. E int FDECL(sdlgl_internal_key_handler, (SDL_keysym *, int));
1071. E int FDECL(sdlgl_internal_button_handler, (SDL_MouseButtonEvent *));
1072. E void FDECL(sdlgl_internal_motion_handler, (SDL_MouseMotionEvent *));
1073. 
1074. 
1075. /*
1076.  * GL_MENU
1077.  */
1078. 
1079. E void FDECL(Sdlgl_start_menu, (winid));
1080. E void FDECL(Sdlgl_add_menu, (winid,int,const ANY_P *,
1081.     CHAR_P,CHAR_P,int,const char *, BOOLEAN_P));
1082. E void FDECL(Sdlgl_end_menu, (winid, const char *));
1083. E int FDECL(Sdlgl_select_menu, (winid, int, MENU_ITEM_P **));
1084. E char FDECL(Sdlgl_message_menu, (CHAR_P,int,const char *));
1085. E char FDECL(Sdlgl_yn_function, (const char *, const char *, CHAR_P));
1086. 
1087. E void FDECL(sdlgl_clear_menu_items, (struct TextWindow *));
1088. E int FDECL(sdlgl_process_menu_window, (int, struct TextWindow *, int));
1089. 
1090. 
1091. /*
1092.  * GL_TEXT
1093.  */
1094. 
1095. E void FDECL(Sdlgl_display_file, (const char *, BOOLEAN_P));
1096. 
1097. E void FDECL(sdlgl_clear_text_items, (struct TextWindow *));
1098. E void FDECL(sdlgl_insert_text_item, (struct TextWindow *,
1099.     struct TextItem *, int, int, const char *));
1100. E void FDECL(sdlgl_process_text_window, (int, struct TextWindow *));
1101. 
1102. 
1103. /*
1104.  * GL_MAP
1105.  */
1106. 
1107. #if defined(VANILLA_GLHACK)
1108. #define NUM_MON_TILES  393
1109. #else
1110. #define NUM_MON_TILES  603
1111. #endif
1112. 
1113. /* extra floor tiles */
1114. #if defined(VANILLA_GLHACK)
1115. #define FLOOR_TILES  1057
1116. #else
1117. #define FLOOR_TILES  1367
1118. #endif
1119. 
1120. #define Fl_Mine     (FLOOR_TILES + 0)
1121. #define Fl_Sokoban  (FLOOR_TILES + 1)
1122. #define Fl_Knox     Fl_Sokoban
1123. #define Fl_Tower    (FLOOR_TILES + 2)
1124. #define Fl_Hell     (FLOOR_TILES + 3)
1125. #define Fl_Quest    (FLOOR_TILES + 4)
1126. #define Fl_Astral   (FLOOR_TILES + 5)
1127. #define Fl_Rogue    (FLOOR_TILES + 6)
1128. #define Fl_Caves    Fl_Rogue
1129. #define Fl_Beach    (FLOOR_TILES + 7)
1130. 
1131. E void FDECL(Sdlgl_cliparound, (int, int));
1132. E void FDECL(Sdlgl_update_positionbar, (char *));
1133. E void FDECL(Sdlgl_print_glyph, (winid,XCHAR_P,XCHAR_P,int));
1134. 
1135. E void FDECL(sdlgl_create_map, (struct TextWindow *, int, int));
1136. E void FDECL(sdlgl_zoom_map, (int));
1137. E int FDECL(sdlgl_quantize_zoom, (int));
1138. E int NDECL(sdlgl_cursor_visible);
1139. E void NDECL(sdlgl_center_screen_on_player);
1140. E void NDECL(sdlgl_toggle_text_view);
1141. E int FDECL(sdlgl_find_click, (int, int *, int *));
1142. E void FDECL(sdlgl_pan_map_window, (int, int));
1143. 
1144. 
1145. /*
1146.  * GL_EMUL
1147.  */
1148. 
1149. E void NDECL(sdlgl_emul_startup);
1150. E void NDECL(sdlgl_emul_shutdown);
1151. E void NDECL(Sdlgl_start_screen);
1152. E void NDECL(Sdlgl_end_screen);
1153. E void NDECL(Sdlgl_askname);
1154. E void FDECL(Sdlgl_getlin, (const char *,char *));
1155. E int NDECL(Sdlgl_get_ext_cmd);
1156. 
1157. E struct TextWindow *FDECL(sdlgl_new_textwin, (int));
1158. E void FDECL(sdlgl_free_textwin, (struct TextWindow *));
1159. E void FDECL(sdlgl_putc, (struct TextWindow *, int));
1160. E void FDECL(sdlgl_puts, (struct TextWindow *, const char *));
1161. E void FDECL(sdlgl_puts_nolf, (struct TextWindow *, const char *));
1162. E void FDECL(sdlgl_gotoxy, (struct TextWindow *, int, int));
1163. E void FDECL(sdlgl_home, (struct TextWindow *));
1164. E void FDECL(sdlgl_backsp, (struct TextWindow *));
1165. E void FDECL(sdlgl_clear, (struct TextWindow *));
1166. E void FDECL(sdlgl_clear_end, (struct TextWindow *));
1167. E void FDECL(sdlgl_clear_eos, (struct TextWindow *));
1168. E void FDECL(sdlgl_enable_cursor, (struct TextWindow *, int));
1169. 
1170. 
1171. /*
1172.  * GL_STAT
1173.  */
1174. E void FDECL(sdlgl_write_status, (struct TextWindow *win));
1175. E void FDECL(sdlgl_update_status, (int));
1176. 
1177. 
1178. #undef E
1179. 
1180. #endif /* WINGL_INTERNAL */
1181. #endif /* WINGL_H */
1182. /*winGL.c*/