2 * Copyright (C) Volition, Inc. 1999. All rights reserved.
4 * All source code herein is the property of Volition, Inc. You may not sell
5 * or otherwise commercially exploit the source or things you created based on
10 * $Logfile: /Freespace2/code/Bmpman/BmpMan.cpp $
15 * Code to load and manage all bitmaps for the game
18 * Revision 1.11 2004/07/04 11:31:43 taylor
19 * amd64 support, compiler warning fixes, don't use software rendering
21 * Revision 1.10 2003/05/28 06:02:04 taylor
22 * fix transparency in green weapon blobs
24 * Revision 1.9 2002/06/09 04:41:15 relnev
25 * added copyright header
27 * Revision 1.8 2002/06/05 04:03:32 relnev
28 * finished cfilesystem.
30 * removed some old code.
32 * fixed mouse save off-by-one.
36 * Revision 1.7 2002/06/03 09:25:37 relnev
37 * implement mouse cursor and screen save/restore
39 * Revision 1.6 2002/05/30 23:07:08 relnev
42 * Revision 1.5 2002/05/30 21:44:48 relnev
43 * implemented some missing texture stuff.
45 * enable bitmap polys for opengl.
47 * work around greenness in bitmaps.
49 * Revision 1.4 2002/05/28 17:03:29 theoddone33
50 * fs2 gets to the main game loop now
52 * Revision 1.3 2002/05/28 08:52:03 relnev
53 * implemented two assembly stubs.
55 * cleaned up a few warnings.
57 * added a little demo hackery to make it progress a little farther.
59 * Revision 1.2 2002/05/07 03:16:43 theoddone33
60 * The Great Newline Fix
62 * Revision 1.1.1.1 2002/05/03 03:28:08 root
66 * 37 9/13/99 11:26p Andsager
67 * Add debug code to check for poorly sized anis
69 * 36 9/05/99 11:19p Dave
70 * Made d3d texture cache much more safe. Fixed training scoring bug where
71 * it would backout scores without ever having applied them in the first
74 * 35 8/20/99 2:09p Dave
77 * 34 8/10/99 6:54p Dave
78 * Mad optimizations. Added paging to the nebula effect.
80 * 33 8/06/99 1:52p Dave
81 * Bumped up MAX_BITMAPS for the demo.
83 * 32 8/02/99 1:49p Dave
84 * Fixed low-mem animation problem. Whee!
86 * 31 7/16/99 1:49p Dave
87 * 8 bit aabitmaps. yay.
89 * 30 7/13/99 1:15p Dave
90 * 32 bit support. Whee!
92 * 29 6/29/99 10:35a Dave
93 * Interface polygon bitmaps! Whee!
95 * 28 6/16/99 4:06p Dave
96 * New pilot info popup. Added new draw-bitmap-as-poly function.
98 * 27 5/05/99 9:02p Dave
99 * Fixed D3D aabitmap rendering. Spiffed up nebula effect a bit (added
100 * rotations, tweaked values, made bitmap selection more random). Fixed
101 * D3D beam weapon clipping problem. Added D3d frame dumping.
103 * 26 4/27/99 12:16a Dave
104 * Fixed beam weapon muzzle glow problem. Fixed premature timeout on the
105 * pxo server list screen. Fixed secondary firing for hosts on a
106 * standalone. Fixed wacky multiplayer weapon "shuddering" problem.
108 * 25 4/09/99 2:21p Dave
109 * Multiplayer beta stuff. CD checking.
111 * 24 4/08/99 10:42a Johnson
112 * Don't try to swizzle a texture to transparent in Fred.
114 * 23 3/31/99 8:24p Dave
115 * Beefed up all kinds of stuff, incluging beam weapons, nebula effects
116 * and background nebulae. Added per-ship non-dimming pixel colors.
118 * 22 3/20/99 3:46p Dave
119 * Added support for model-based background nebulae. Added 3 new
122 * 21 2/11/99 3:08p Dave
123 * PXO refresh button. Very preliminary squad war support.
125 * 20 2/08/99 5:07p Dave
126 * FS2 chat server support. FS2 specific validated missions.
128 * 19 2/05/99 12:52p Dave
129 * Fixed Glide nondarkening textures.
131 * 18 2/04/99 6:29p Dave
132 * First full working rev of FS2 PXO support. Fixed Glide lighting
135 * 17 2/03/99 11:44a Dave
136 * Fixed d3d transparent textures.
138 * 16 1/15/99 11:29a Neilk
139 * Fixed D3D screen/texture pixel formatting problem.
141 * 15 1/14/99 12:48a Dave
142 * Todo list bug fixes. Made a pass at putting briefing icons back into
143 * FRED. Sort of works :(
145 * 14 1/12/99 12:53a Dave
146 * More work on beam weapons - made collision detection very efficient -
147 * collide against all object types properly - made 3 movement types
148 * smooth. Put in test code to check for possible non-darkening pixels on
151 * 13 1/08/99 2:08p Dave
152 * Fixed software rendering for pofview. Super early support for AWACS and
155 * 12 1/06/99 2:24p Dave
156 * Stubs and release build fixes.
158 * 11 12/14/98 4:01p Dave
159 * Got multi_data stuff working well with new xfer stuff.
161 * 10 12/06/98 2:36p Dave
162 * Drastically improved nebula fogging.
164 * 9 12/01/98 5:53p Dave
165 * Simplified the way pixel data is swizzled. Fixed tga bitmaps to work
166 * properly in D3D and Glide.
168 * 8 12/01/98 4:46p Dave
169 * Put in targa bitmap support (16 bit).
171 * 7 12/01/98 10:32a Johnson
172 * Fixed direct3d font problems. Fixed sun bitmap problem. Fixed direct3d
175 * 6 12/01/98 8:06a Dave
176 * Temporary checkin to fix some texture transparency problems in d3d.
178 * 5 11/30/98 5:31p Dave
179 * Fixed up Fred support for software mode.
181 * 4 11/30/98 1:07p Dave
182 * 16 bit conversion, first run.
184 * 3 10/22/98 6:14p Dave
185 * Optimized some #includes in Anim folder. Put in the beginnings of
186 * parse/localization support for externalized strings and tstrings.tbl
188 * 2 10/07/98 10:52a Dave
191 * 1 10/07/98 10:48a Dave
193 * 106 5/23/98 4:43p John
194 * Took out debugging sleep
196 * 105 5/23/98 4:14p John
197 * Added code to preload textures to video card for AGP. Added in code
198 * to page in some bitmaps that weren't getting paged in at level start.
200 * 104 5/20/98 12:59p John
201 * Turned optimizations on for debug builds. Also turning on automatic
202 * function inlining. Turned off the unreachable code warning.
204 * 103 5/20/98 10:20a Hoffoss
205 * Fixed warning in the code.
207 * 102 5/19/98 3:45p John
208 * fixed bug causing lowmem to drop half of the frames. Also halved fps
211 * 101 5/14/98 3:38p John
212 * Added in more non-darkening colors for Adam. Had to fix some bugs in
213 * BmpMan and Ani stuff to get this to work.
215 * 100 4/22/98 9:13p John
216 * Added code to replace frames of animations in vram if so desired.
218 * 99 4/17/98 6:56a John
219 * Fixed bug where RLE'd user bitmaps caused data to not get freed.
220 * (Turned off RLE for use bitmaps). Made lossy animations reduce
221 * resolution by a factor of 2 in low memory conditions.
223 * 98 4/16/98 6:31p Hoffoss
224 * Added function to get filename of a bitmap handle, which we don't have
227 * 97 4/01/98 9:27p John
228 * Fixed debug info in bmpman.
230 * 96 4/01/98 5:34p John
231 * Made only the used POFs page in for a level. Reduced some interp
232 * arrays. Made custom detail level work differently.
234 * 95 3/31/98 9:55a Lawrance
235 * JOHN: get xparency working for user bitmaps
237 * 94 3/30/98 4:02p John
238 * Made machines with < 32 MB of RAM use every other frame of certain
239 * bitmaps. Put in code to keep track of how much RAM we've malloc'd.
241 * 93 3/29/98 4:05p John
242 * New paging code that loads everything necessary at level startup.
244 * 92 3/27/98 11:20a John
245 * commented back in some debug code.
247 * 91 3/26/98 5:21p John
248 * Added new code to preload all bitmaps at the start of a level.
249 * Commented it out, though.
251 * 90 3/26/98 4:56p Jasen
252 * AL: Allow find_block_of() to allocate a series of bitmaps from index 0
254 * 89 3/26/98 10:21a John
255 * Made no palette-mapped bitmaps use 0,255,0 as transparent.
257 * 88 3/24/98 5:39p John
258 * Added debug code to show bitmap fragmentation. Made user bitmaps
259 * allocate from top of array.
261 * 87 3/22/98 3:28p John
262 * Added in stippled alpha for lower details. Made medium detail use
265 * 86 3/11/98 1:55p John
268 * 85 3/06/98 4:09p John
269 * Changed the way we do bitmap RLE'ing... this speds up HUD bitmaps by
272 * 84 3/02/98 6:00p John
273 * Moved MAX_BITMAPS into BmpMan.h so the stuff in the graphics code that
274 * is dependent on it won't break if it changes. Made ModelCache slots
275 * be equal to MAX_OBJECTS which is what it is.
277 * 83 3/02/98 9:51a John
278 * Added code to print the number of bitmap slots in use between levels.
280 * 82 2/16/98 3:54p John
281 * Changed a bunch of mprintfs to catagorize to BmpInfo
283 * 81 2/13/98 5:00p John
284 * Made user bitmaps not get wrote to level cache file.
286 * 80 2/06/98 8:25p John
287 * Added code for new bitmaps since last frame
289 * 79 2/06/98 8:10p John
290 * Added code to show amout of texture usage each frame.
292 * 78 2/05/98 9:21p John
293 * Some new Direct3D code. Added code to monitor a ton of stuff in the
296 * 77 1/29/98 11:48a John
297 * Added new counter measure rendering as model code. Made weapons be
298 * able to have impact explosion.
300 * 76 1/28/98 6:19p Dave
301 * Reduced standalone memory usage ~8 megs. Put in support for handling
302 * multiplayer submenu handling for endgame, etc.
304 * 75 1/17/98 12:55p John
305 * Fixed bug that I just created that loaded all ani frames.
307 * 74 1/17/98 12:33p John
308 * Made the game_busy function be called a constant amount of times per
309 * level load, making the bar prediction easier.
311 * 73 1/17/98 12:14p John
312 * Added loading... bar to freespace.
314 * 72 1/11/98 3:20p John
315 * Made so that if no .clt exists, it will load all the bitmaps
317 * 71 1/11/98 3:06p John
318 * Made bitmap loading stop when cache gets full.
320 * 70 1/11/98 2:45p John
321 * Changed .lst to .clt
323 * 69 1/11/98 2:14p John
324 * Changed a lot of stuff that had to do with bitmap loading. Made cfile
325 * not do callbacks, I put that in global code. Made only bitmaps that
326 * need to load for a level load.
328 * 67 1/09/98 4:07p John
329 * Made all bitmap functions return a bitmap "Handle" not number. This
330 * helps to find bm_release errors.
332 * 66 1/09/98 1:38p John
333 * Fixed some bugs from previous comment
335 * 65 1/09/98 1:32p John
336 * Added some debugging code to track down a weird error. Namely I fill
337 * in the be structure with bogus values when someone frees it.
339 * 64 12/28/97 2:00p John
340 * put in another assert checking for invalid lock/unlock sequencing
342 * 63 12/24/97 2:02p John
343 * Changed palette translation to be a little faster for unoptimized
346 * 62 12/18/97 8:59p Dave
347 * Finished putting in basic support for weapon select and ship select in
350 * 61 12/15/97 10:27p John
351 * fixed bug where 2 bm_loads of same file both open the header.
353 * 60 12/08/97 2:17p John
354 * fixed bug with bmpman and cf_callback.
355 * made cf_callback in Freespace set small font back when done.
357 * 59 12/03/97 5:01p Lawrance
358 * bump up MAX_BITMAPS to 1500. People have reached 1000 bitmaps while
359 * playing multiple missions.
361 * 58 12/02/97 3:59p John
362 * Added first rev of thruster glow, along with variable levels of
363 * translucency, which retquired some restructing of palman.
365 * 57 11/30/97 3:57p John
366 * Made fixed 32-bpp translucency. Made BmpMan always map translucent
367 * color into 255 even if you aren't supposed to remap and make it's
370 * 56 10/05/97 10:39a John
371 * fixed bug with palette on unmapped bitmaps. Made unmapped bitmaps get
372 * marked with xparent.
374 * 55 9/23/97 11:46a Lawrance
375 * fixed bug with rle'ing with spans get big
377 * 54 9/23/97 10:45a John
378 * made so you can tell bitblt code to rle a bitmap by passing flag to
381 * 53 9/19/97 10:18a John
382 * fixed bug with aa animations being re-rle'd every
386 * 52 9/09/97 10:08a Sandeep
387 * Fixed Compiler Level 4 warnings
389 * 51 9/08/97 2:02p John
390 * fixed typo in nprintf
392 * 50 9/08/97 1:56p John
393 * fixed some memory housekeeping bugs
395 * 49 9/03/97 4:19p John
396 * changed bmpman to only accept ani and pcx's. made passing .pcx or .ani
397 * to bm_load functions not needed. Made bmpman keep track of palettes
398 * for bitmaps not mapped into game palettes.
400 * 48 8/29/97 7:35p Lawrance
401 * check if .ani animation is already loaded in bm_load_animation()
403 * 47 8/25/97 11:14p Lawrance
404 * added support for .ani files in bm_load_animation()
406 * 46 8/17/97 2:42p Lawrance
407 * only flag PCX files as xparent if they have xparent pixels in them
409 * 45 8/15/97 9:57a Lawrance
410 * support multiple xparent entries for PCX files
412 * 44 8/05/97 10:18a Lawrance
413 * my_rand() being used temporarily instead of rand()
415 * 43 8/01/97 4:30p John
417 * 42 7/29/97 8:34a John
420 * 41 7/18/97 3:27p Lawrance
421 * have pcx files use (0,255,0) for transparency
423 * 40 7/16/97 3:07p John
425 * 39 7/10/97 8:34a John
426 * Added code to read TGA files.
428 * 38 6/20/97 1:50p John
429 * added rle code to bmpman. made gr8_aabitmap use it.
431 * 37 6/18/97 12:07p John
432 * fixed some color bugs
434 * 36 6/17/97 8:58p Lawrance
435 * fixed bug with not nulling bm.data with USER bitmaps
437 * 35 6/12/97 2:44a Lawrance
438 * changed bm_unlock() to take an index into bm_bitmaps(). Added
439 * ref_count to bitmap_entry struct
441 * 34 5/20/97 10:36a John
442 * Fixed problem with user bitmaps and direct3d caching.
444 * 33 5/14/97 1:59p John
445 * fixed a palette bug with vclips.
447 * 32 3/24/97 4:43p John
448 * speed up chunked collision detection by only checking cubes the vector
451 * 31 3/24/97 3:25p John
452 * Cleaned up and restructured model_collide code and fvi code. In fvi
453 * made code that finds uvs work.. Added bm_get_pixel to BmpMan.
455 * 30 3/11/97 2:49p Allender
457 * 29 2/18/97 9:43a Lawrance
458 * added SDL_assert() in bm_release
460 * 28 1/22/97 4:29p John
461 * maybe fixed bug with code that counts total bytes of texture ram used.
463 * 27 1/22/97 4:19p Lawrance
464 * added flags to bm_create to allow transparency
466 * 26 1/21/97 5:24p John
467 * fixed another bug with bm_release.
469 * 25 1/21/97 5:12p John
470 * fixed bug with case
472 * 24 1/21/97 5:02p John
473 * Added code for 8bpp user bitmaps.
475 * 23 1/09/97 11:35a John
476 * Added some 2d functions to get/put screen images.
478 * 22 11/26/96 6:50p John
479 * Added some more hicolor primitives. Made windowed mode run as current
480 * bpp, if bpp is 8,16,or 32.
482 * 21 11/26/96 9:44a Allender
483 * Allow for use of different bitmap palettes
485 * 20 11/25/96 10:36a Allender
486 * started working on 32 bpp support. Added 15 bpp.
488 * 19 11/18/96 1:51p Allender
489 * fix up manager code to reread bitmaps if needed in newer bit depth
491 * 18 11/15/96 4:24p Allender
492 * more bmpman stuff -- only free bitmap slots when releasing copied
493 * texture -- otherwise, only release the data for the bitmap
495 * 17 11/15/96 3:33p Allender
496 * added support for converting to 16 bit textures when requested with
497 * bm_load. Added some other management functions
499 * 16 11/13/96 4:51p Allender
500 * started overhaul of bitmap manager. bm_load no longer actually load
501 * the data, only the info for the bitmap. Locking the bitmap now forces
502 * load when no data present (or will if bpp changes)
509 #include "pcxutils.h"
513 #include "animplay.h"
515 #include "systemvars.h"
517 #include "packunpack.h"
519 #include "grinternal.h"
520 #include "tgautils.h"
524 #define BMPMAN_NDEBUG
527 // keep this defined to use per-ship nondarkening pixels
528 #define BMPMAN_SPECIAL_NONDARK
532 #define BM_TYPE_NONE 0
533 #define BM_TYPE_PCX 1
534 #define BM_TYPE_USER 2
535 #define BM_TYPE_ANI 3 // in-house ANI format
536 #define BM_TYPE_TGA 4 // 16 bit targa
538 typedef union bm_extra_info {
540 // Stuff needed for animations
541 int first_frame; // used for animations -- points to index of first frame
542 ubyte num_frames; // used for animation -- number of frames in the animation
543 ubyte fps; // used for animation -- frames per second
546 // Stuff needed for user bitmaps
547 void *data; // For user bitmaps, this is where the data comes from
548 ubyte bpp; // For user bitmaps, this is what format the data is
549 ubyte flags; // Flags passed to bm_create
553 typedef struct bitmap_entry {
555 char filename[MAX_FILENAME_LEN]; // filename for this bitmap
557 uint signature; // a unique signature identifying the data
558 uint palette_checksum; // checksum used to be sure bitmap is in current palette
559 int handle; // Handle = id*MAX_BITMAPS + bitmapnum
560 int last_used; // When this bitmap was last used
562 ubyte type; // PCX, USER, ANI, etc
563 signed char ref_count; // Number of locks on bitmap. Can't unload unless ref_count is 0.
565 // Stuff to keep track of usage
566 ubyte preloaded; // If set, then this was loaded from the lst file
567 ubyte used_flags; // What flags it was accessed thru
572 // Data for animations and user bitmaps
577 ubyte used_last_frame; // If set, then it was used last frame
578 ubyte used_this_frame; // If set, then it was used this frame
579 int data_size; // How much data this bitmap uses
580 int used_count; // How many times it was accessed
584 uint Bm_next_signature = 0x1234;
586 bitmap_entry bm_bitmaps[MAX_BITMAPS];
588 int bm_texture_ram = 0;
590 // Bm_max_ram - How much RAM bmpman can use for textures.
591 // Set to <1 to make it use all it wants.
592 int Bm_max_ram = 0; //16*1024*1024; // Only use 16 MB for textures
594 int bm_next_handle = 1;
598 static int Bm_low_mem = 0;
601 // ===========================================
602 // Mode: 0 = High memory
603 // 1 = Low memory ( every other frame of ani's)
604 // 2 = Debug low memory ( only use first frame of each ani )
605 void bm_set_low_mem( int mode )
607 SDL_assert( (mode >= 0) && (mode<=2 ));
612 static int bm_get_next_handle()
614 int n = bm_next_handle;
616 if ( bm_next_handle > 30000 ) {
622 // Frees a bitmaps data if it should, and
623 // Returns true if bitmap n can free it's data.
624 static void bm_free_data(int n)
629 SDL_assert( n >= 0 && n < MAX_BITMAPS );
634 // If there isn't a bitmap in this structure, don't
635 // do anything but clear out the bitmap info
636 if ( be->type==BM_TYPE_NONE)
639 // If this bitmap doesn't have any data to free, skip
640 // the freeing it part of this.
641 if ( bmp->data == 0 )
644 // Don't free up memory for user defined bitmaps, since
645 // BmpMan isn't the one in charge of allocating/deallocing them.
646 if (be->type == BM_TYPE_USER)
649 // Free up the data now!
651 // mprintf(( "Bitmap %d freed %d bytes\n", n, bm_bitmaps[n].data_size ));
653 bm_texture_ram -= be->data_size;
655 free((void *)bmp->data);
659 // Clear out & reset the bitmap data structure
667 be->signature = Bm_next_signature++;
673 int Bm_ram_freed = 0;
675 static void bm_free_some_ram( int n, int size )
678 if ( Bm_max_ram < 1 ) return;
679 if ( bm_texture_ram + size < Bm_max_ram ) return;
681 int current_time = timer_get_milliseconds();
683 while( bm_texture_ram + size > Bm_max_ram ) {
686 // Need to free some RAM up!
687 int i, oldest=-1, best_val=0;
688 for (i = 0; i < MAX_BITMAPS; i++) {
689 if ( (bm_bitmaps[i].type != BM_TYPE_NONE) && (bm_bitmaps[i].first_frame!=bm_bitmaps[n].first_frame) && (bm_bitmaps[i].ref_count==0) && (bm_bitmaps[i].data_size>0) ) {
690 int page_func = ( current_time-bm_bitmaps[i].last_used)*bm_bitmaps[i].data_size;
691 if ( (oldest==-1) || (page_func>best_val) ) {
693 best_val = page_func;
699 //mprintf(( "Freeing bitmap '%s'\n", bm_bitmaps[oldest].filename ));
700 for (i=0; i<bm_bitmaps[oldest].num_frames; i++ ) {
701 bm_free_data(bm_bitmaps[oldest].first_frame+i);
704 //mprintf(( "Couldn't free enough! %d\n", bm_texture_ram ));
713 static void *bm_malloc( int n, int size )
715 SDL_assert( n >= 0 && n < MAX_BITMAPS );
716 // mprintf(( "Bitmap %d allocated %d bytes\n", n, size ));
718 bm_free_some_ram( n, size );
719 SDL_assert( bm_bitmaps[n].data_size == 0 );
720 bm_bitmaps[n].data_size += size;
721 bm_texture_ram += size;
730 for (i=0; i<MAX_BITMAPS; i++ ) {
731 bm_free_data(i); // clears flags, bbp, data, etc
742 mprintf(( "Size of bitmap info = %d KB\n", sizeof( bm_bitmaps )/1024 ));
743 mprintf(( "Size of bitmap extra info = %d bytes\n", sizeof( bm_extra_info ) ));
750 for (i=0; i<MAX_BITMAPS; i++ ) {
751 bm_bitmaps[i].filename[0] = '\0';
752 bm_bitmaps[i].type = BM_TYPE_NONE;
753 bm_bitmaps[i].info.user.data = NULL;
754 bm_bitmaps[i].bm.data = 0;
755 bm_bitmaps[i].bm.palette = NULL;
757 bm_bitmaps[i].data_size = 0;
758 bm_bitmaps[i].used_count = 0;
759 bm_bitmaps[i].used_last_frame = 0;
760 bm_bitmaps[i].used_this_frame = 0;
762 bm_free_data(i); // clears flags, bbp, data, etc
770 // Returns number of bytes of bitmaps locked this frame
771 // ntotal = number of bytes of bitmaps locked this frame
772 // nnew = number of bytes of bitmaps locked this frame that weren't locked last frame
773 void bm_get_frame_usage(int *ntotal, int *nnew)
780 for (i=0; i<MAX_BITMAPS; i++ ) {
781 if ( (bm_bitmaps[i].type != BM_TYPE_NONE) && (bm_bitmaps[i].used_this_frame)) {
782 if ( !bm_bitmaps[i].used_last_frame ) {
783 *nnew += bm_bitmaps[i].bm.w*bm_bitmaps[i].bm.h;
785 *ntotal += bm_bitmaps[i].bm.w*bm_bitmaps[i].bm.h;
787 bm_bitmaps[i].used_last_frame = bm_bitmaps[i].used_this_frame;
788 bm_bitmaps[i].used_this_frame = 0;
793 void bm_get_frame_usage(int *ntotal, int *nnew)
798 // given a loaded bitmap with valid info, calculate sections
799 void bm_calc_sections(bitmap *be)
803 if (gr_screen.use_sections) {
804 // number of x and y sections
805 be->sections.num_x = (ubyte)(be->w / MAX_BMAP_SECTION_SIZE);
806 if((be->sections.num_x * MAX_BMAP_SECTION_SIZE) < be->w){
807 be->sections.num_x++;
809 be->sections.num_y = (ubyte)(be->h / MAX_BMAP_SECTION_SIZE);
810 if((be->sections.num_y * MAX_BMAP_SECTION_SIZE) < be->h){
811 be->sections.num_y++;
814 // calculate the offsets for each section
815 for(idx=0; idx<be->sections.num_x; idx++){
816 be->sections.sx[idx] = (ushort)(MAX_BMAP_SECTION_SIZE * idx);
818 for(idx=0; idx<be->sections.num_y; idx++){
819 be->sections.sy[idx] = (ushort)(MAX_BMAP_SECTION_SIZE * idx);
822 be->sections.num_x = 1;
823 be->sections.num_y = 1;
825 be->sections.sx[0] = 0;
826 be->sections.sy[0] = 0;
830 // Creates a bitmap that exists in RAM somewhere, instead
831 // of coming from a disk file. You pass in a pointer to a
832 // block of 32 (or 8)-bit-per-pixel data. Right now, the only
833 // bpp you can pass in is 32 or 8. On success, it returns the
834 // bitmap number. You cannot free that RAM until bm_release
835 // is called on that bitmap.
836 int bm_create( int bpp, int w, int h, void *data, int flags )
838 int i, n, first_slot = MAX_BITMAPS;
845 // SDL_assert((bpp==32)||(bpp==8));
847 SDL_assert(flags & BMP_AABITMAP);
849 SDL_assert(bpp == 16);
852 if ( !bm_inited ) bm_init();
854 for (i = MAX_BITMAPS-1; i >= 0; i-- ) {
855 if ( bm_bitmaps[i].type == BM_TYPE_NONE ) {
862 SDL_assert( n > -1 );
864 // Out of bitmap slots
865 if ( n == -1 ) return -1;
867 memset( &bm_bitmaps[n], 0, sizeof(bitmap_entry) );
869 SDL_snprintf( bm_bitmaps[n].filename, MAX_FILENAME_LEN, "TMP%dx%d", w, h );
870 bm_bitmaps[n].type = BM_TYPE_USER;
871 bm_bitmaps[n].palette_checksum = 0;
873 bm_bitmaps[n].bm.w = short(w);
874 bm_bitmaps[n].bm.h = short(h);
875 bm_bitmaps[n].bm.rowsize = short(w);
876 bm_bitmaps[n].bm.bpp = (unsigned char)(bpp);
877 bm_bitmaps[n].bm.flags = 0;
878 bm_bitmaps[n].bm.flags |= flags;
879 bm_bitmaps[n].bm.data = 0;
880 bm_bitmaps[n].bm.palette = NULL;
882 bm_bitmaps[n].info.user.bpp = ubyte(bpp);
883 bm_bitmaps[n].info.user.data = data;
884 bm_bitmaps[n].info.user.flags = ubyte(flags);
886 bm_bitmaps[n].signature = Bm_next_signature++;
888 bm_bitmaps[n].handle = bm_get_next_handle()*MAX_BITMAPS + n;
889 bm_bitmaps[n].last_used = -1;
891 // fill in section info
892 bm_calc_sections(&bm_bitmaps[n].bm);
894 return bm_bitmaps[n].handle;
897 // sub helper function. Given a raw filename and an extension, try and find the bitmap
898 // returns -1 if it could not be found
899 // 0 if it was found as a file
900 // 1 if it already exists, fills in handle
901 int Bm_ignore_duplicates = 0;
902 int bm_load_sub(const char *real_filename, const char *ext, int *handle)
905 char filename[MAX_FILENAME_LEN] = "";
907 SDL_strlcpy( filename, real_filename, sizeof(filename) );
908 SDL_strlcat( filename, ext, sizeof(filename) );
909 for (i=0; i<(int)strlen(filename); i++ ){
910 filename[i] = char(tolower(filename[i]));
913 // try to find given filename to see if it has been loaded before
914 if(!Bm_ignore_duplicates){
915 for (i = 0; i < MAX_BITMAPS; i++) {
916 if ( (bm_bitmaps[i].type != BM_TYPE_NONE) && !SDL_strcasecmp(filename, bm_bitmaps[i].filename) ) {
917 nprintf (("BmpMan", "Found bitmap %s -- number %d\n", filename, i));
918 *handle = bm_bitmaps[i].handle;
924 // try and find the file
926 CFILE *test = cfopen(filename, "rb");
933 // could not be found
937 // This loads a bitmap so we can draw with it later.
938 // It returns a negative number if it couldn't load
939 // the bitmap. On success, it returns the bitmap
940 // number. Function doesn't acutally load the data, only
941 // width, height, and possibly flags.
942 int bm_load( const char * real_filename )
944 int i, n, first_slot = MAX_BITMAPS;
946 char filename[MAX_FILENAME_LEN];
951 if ( !bm_inited ) bm_init();
953 // nice little trick for keeping standalone memory usage way low - always return a bogus bitmap
954 if(Game_mode & GM_STANDALONE_SERVER){
955 SDL_strlcpy(filename,"test128", sizeof(filename));
958 // make sure no one passed an extension
959 SDL_strlcpy( filename, real_filename, sizeof(filename) );
960 char *p = SDL_strchr( filename, '.' );
962 mprintf(( "Someone passed an extension to bm_load for file '%s'\n", real_filename ));
967 // try and find the pcx file
968 switch(bm_load_sub(filename, ".pcx", &handle)){
976 SDL_strlcat(filename, ".pcx", sizeof(filename));
979 // found as pre-existing
985 // try and find the tga file
986 switch(bm_load_sub(filename, ".tga", &handle)){
994 SDL_strlcat(filename, ".tga", sizeof(filename));
998 // found as pre-existing
1004 // if its a tga file
1006 int tga_error=targa_read_header( filename, &w, &h, &bpp, NULL );
1007 if ( tga_error != TARGA_ERROR_NONE ) {
1008 mprintf(( "Couldn't open '%s'\n", filename ));
1012 // if its a pcx file
1014 int pcx_error=pcx_read_header( filename, &w, &h, NULL );
1015 if ( pcx_error != PCX_ERROR_NONE ) {
1016 mprintf(( "Couldn't open '%s'\n", filename ));
1021 // Error( LOCATION, "Unknown bitmap type %s\n", filename );
1023 // Find an open slot
1024 for (i = 0; i < MAX_BITMAPS; i++) {
1025 if ( (bm_bitmaps[i].type == BM_TYPE_NONE) && (first_slot == MAX_BITMAPS) ){
1031 SDL_assert( n < MAX_BITMAPS );
1033 if ( n == MAX_BITMAPS ) return -1;
1035 // ensure fields are cleared out from previous bitmap
1036 // SDL_assert(bm_bitmaps[n].bm.data == 0);
1037 // SDL_assert(bm_bitmaps[n].bm.palette == NULL);
1038 // SDL_assert(bm_bitmaps[n].ref_count == 0 );
1039 // SDL_assert(bm_bitmaps[n].user_data == NULL);
1040 memset( &bm_bitmaps[n], 0, sizeof(bitmap_entry) );
1042 // Mark the slot as filled, because cf_read might load a new bitmap
1044 bm_bitmaps[n].type = tga ? (ubyte)BM_TYPE_TGA : (ubyte)BM_TYPE_PCX;
1045 bm_bitmaps[n].signature = Bm_next_signature++;
1046 SDL_assert ( strlen(filename) < MAX_FILENAME_LEN );
1047 SDL_strlcpy(bm_bitmaps[n].filename, filename, MAX_FILENAME_LEN );
1048 bm_bitmaps[n].bm.w = short(w);
1049 bm_bitmaps[n].bm.rowsize = short(w);
1050 bm_bitmaps[n].bm.h = short(h);
1051 bm_bitmaps[n].bm.bpp = 0;
1052 bm_bitmaps[n].bm.flags = 0;
1053 bm_bitmaps[n].bm.data = 0;
1054 bm_bitmaps[n].bm.palette = NULL;
1056 bm_bitmaps[n].palette_checksum = 0;
1057 bm_bitmaps[n].handle = bm_get_next_handle()*MAX_BITMAPS + n;
1058 bm_bitmaps[n].last_used = -1;
1060 // fill in section info
1061 bm_calc_sections(&bm_bitmaps[n].bm);
1063 return bm_bitmaps[n].handle;
1066 // special load function. basically allows you to load a bitmap which already exists (by filename).
1067 // this is useful because in some cases we need to have a bitmap which is locked in screen format
1068 // _and_ texture format, such as pilot pics and squad logos
1069 int bm_load_duplicate(const char *filename)
1073 // ignore duplicates
1074 Bm_ignore_duplicates = 1;
1077 ret = bm_load(filename);
1080 Bm_ignore_duplicates = 0;
1085 DCF(bm_frag,"Shows BmpMan fragmentation")
1095 for (int i=0; i<MAX_BITMAPS; i++ ) {
1096 switch( bm_bitmaps[i].type ) {
1098 gr_set_color(128,128,128);
1101 gr_set_color(255,0,0);
1104 gr_set_color(0,255,0);
1107 gr_set_color(0,0,255);
1111 gr_rect( x+xs, y+ys, w, h );
1125 static int find_block_of(int n)
1131 for (i=0; i<MAX_BITMAPS; i++ ) {
1132 if ( bm_bitmaps[i].type == BM_TYPE_NONE ) {
1133 if (cnt==0) nstart = i;
1137 if ( cnt == n ) return nstart;
1140 // Error( LOCATION, "Couldn't find block of %d frames\n", n );
1144 // ------------------------------------------------------------------
1145 // bm_load_animation()
1147 // input: filename => filename of animation
1148 // nframes => OUTPUT parameter: number of frames in the animation
1149 // fps => OUTPUT/OPTIONAL parameter: intended fps for the animation
1151 // returns: bitmap number of first frame in the animation
1153 int bm_load_animation( const char *real_filename, int *nframes, int *fps, int can_drop_frames)
1158 char filename[MAX_FILENAME_LEN];
1160 if ( !bm_inited ) bm_init();
1162 SDL_strlcpy( filename, real_filename, sizeof(filename) );
1163 char *p = SDL_strchr( filename, '.' );
1165 mprintf(( "Someone passed an extension to bm_load_animation for file '%s'\n", real_filename ));
1169 SDL_strlcat( filename, ".ani", sizeof(filename) );
1171 if ( (fp = cfopen(filename, "rb")) == NULL ) {
1172 // Error(LOCATION,"Could not open filename %s in bm_load_ani()\n", filename);
1178 // for debug of ANI sizes
1179 SDL_strlcpy(the_anim.name, real_filename, sizeof(the_anim.name));
1181 anim_read_header(&the_anim, fp);
1182 if ( can_drop_frames ) {
1183 if ( Bm_low_mem == 1 ) {
1185 the_anim.total_frames = ( the_anim.total_frames+1)/2;
1186 } else if ( Bm_low_mem == 2 ) {
1187 the_anim.total_frames = 1;
1192 *nframes = the_anim.total_frames;
1193 if ( fps != NULL ) {
1195 *fps = the_anim.fps / 2;
1197 *fps = the_anim.fps;
1201 // first check to see if this ani already has it's frames loaded
1202 for (i = 0; i < MAX_BITMAPS; i++) {
1203 if ( (bm_bitmaps[i].type == BM_TYPE_ANI) && !SDL_strcasecmp(filename, bm_bitmaps[i].filename) ) {
1208 if ( i < MAX_BITMAPS ) {
1209 // in low memory modes this can happen
1211 SDL_assert(bm_bitmaps[i].info.ani.num_frames == *nframes);
1213 return bm_bitmaps[i].handle;
1216 n = find_block_of(*nframes);
1220 // SDL_assert( n >= 0 );
1222 int first_handle = bm_get_next_handle();
1224 SDL_assert ( strlen(filename) < MAX_FILENAME_LEN );
1225 for ( i = 0; i < *nframes; i++ ) {
1226 memset( &bm_bitmaps[n+i], 0, sizeof(bitmap_entry) );
1227 bm_bitmaps[n+i].info.ani.first_frame = n;
1228 bm_bitmaps[n+i].info.ani.num_frames = ubyte(the_anim.total_frames);
1229 bm_bitmaps[n+i].info.ani.fps = ubyte(the_anim.fps);
1230 bm_bitmaps[n+i].bm.w = short(the_anim.width);
1231 bm_bitmaps[n+i].bm.rowsize = short(the_anim.width);
1232 bm_bitmaps[n+i].bm.h = short(the_anim.height);
1234 bm_bitmaps[n+i].bm.w /= 2;
1235 bm_bitmaps[n+i].bm.rowsize /= 2;
1236 bm_bitmaps[n+i].bm.h /= 2;
1238 bm_bitmaps[n+i].bm.flags = 0;
1239 bm_bitmaps[n+i].bm.bpp = 0;
1240 bm_bitmaps[n+i].bm.data = 0;
1241 bm_bitmaps[n+i].bm.palette = NULL;
1242 bm_bitmaps[n+i].type = BM_TYPE_ANI;
1243 bm_bitmaps[n+i].palette_checksum = 0;
1244 bm_bitmaps[n+i].signature = Bm_next_signature++;
1245 bm_bitmaps[n+i].handle = first_handle*MAX_BITMAPS + n+i;
1246 bm_bitmaps[n+i].last_used = -1;
1248 // fill in section info
1249 bm_calc_sections(&bm_bitmaps[n+i].bm);
1252 SDL_snprintf( bm_bitmaps[n+i].filename, MAX_FILENAME_LEN, "%s", filename );
1254 SDL_snprintf( bm_bitmaps[n+i].filename, MAX_FILENAME_LEN, "%s[%d]", filename, i );
1258 return bm_bitmaps[n].handle;
1261 // Gets info. w,h,or flags,nframes or fps can be NULL if you don't care.
1262 void bm_get_info( int handle, int *w, int * h, ubyte * flags, int *nframes, int *fps, bitmap_section_info **sections )
1266 if ( !bm_inited ) return;
1268 int bitmapnum = handle % MAX_BITMAPS;
1269 SDL_assert( bm_bitmaps[bitmapnum].handle == handle ); // INVALID BITMAP HANDLE!
1271 if ( (bm_bitmaps[bitmapnum].type == BM_TYPE_NONE) || (bm_bitmaps[bitmapnum].handle != handle) ) {
1274 if (flags) *flags = 0;
1275 if (nframes) *nframes=0;
1277 if (sections != NULL) *sections = NULL;
1281 bmp = &(bm_bitmaps[bitmapnum].bm);
1285 if (flags) *flags = bmp->flags;
1286 if ( bm_bitmaps[bitmapnum].type == BM_TYPE_ANI ) {
1288 *nframes = bm_bitmaps[bitmapnum].info.ani.num_frames;
1291 *fps= bm_bitmaps[bitmapnum].info.ani.fps;
1301 if(sections != NULL){
1302 *sections = &bm_bitmaps[bitmapnum].bm.sections;
1306 uint bm_get_signature( int handle )
1308 if ( !bm_inited ) bm_init();
1310 int bitmapnum = handle % MAX_BITMAPS;
1311 SDL_assert( bm_bitmaps[bitmapnum].handle == handle ); // INVALID BITMAP HANDLE
1313 return bm_bitmaps[bitmapnum].signature;
1316 extern int palman_is_nondarkening(int r,int g, int b);
1317 static void bm_convert_format( int bitmapnum, bitmap *bmp, ubyte bpp, ubyte flags )
1321 if (Is_standalone) {
1322 SDL_assert(bmp->bpp == 8);
1326 if(flags & BMP_AABITMAP){
1327 SDL_assert(bmp->bpp == 8);
1329 SDL_assert(bmp->bpp == 16);
1333 // maybe swizzle to be an xparent texture
1334 if(!(bmp->flags & BMP_TEX_XPARENT) && (flags & BMP_TEX_XPARENT)){
1335 for(idx=0; idx<bmp->w*bmp->h; idx++){
1337 // if the pixel is transparent
1338 if ( ((ushort*)bmp->data)[idx] == Gr_t_green.mask) {
1339 ((ushort*)bmp->data)[idx] = 0;
1343 bmp->flags |= BMP_TEX_XPARENT;
1347 // basically, map the bitmap into the current palette. used to be done for all pcx's, now just for
1348 // Fred, since its the only thing that uses the software tmapper
1349 void bm_swizzle_8bit_for_fred(bitmap_entry *be, bitmap *bmp, ubyte *data, ubyte *palette)
1355 for (i=0; i<256; i++ ) {
1359 if ( g == 255 && r == 0 && b == 0 ) {
1362 palxlat[i] = (ubyte)(palette_find( r, g, b ));
1365 for (i=0; i<bmp->w * bmp->h; i++ ) {
1366 ubyte c = palxlat[data[i]];
1369 be->palette_checksum = gr_palette_checksum;
1372 void bm_lock_pcx( int handle, int bitmapnum, bitmap_entry *be, bitmap *bmp, ubyte bpp, ubyte flags )
1374 ubyte *data, *palette;
1378 // Unload any existing data
1379 bm_free_data( bitmapnum );
1381 // allocate bitmap data
1383 // SDL_assert(Fred_running || Pofview_running || Is_standalone);
1384 data = (ubyte *)bm_malloc(bitmapnum, bmp->w * bmp->h );
1385 #ifdef BMPMAN_NDEBUG
1386 SDL_assert( be->data_size == bmp->w * bmp->h );
1389 bmp->data = (ptr_u)data;
1391 bmp->palette = gr_palette;
1392 memset( data, 0, bmp->w * bmp->h);
1394 data = (ubyte*)bm_malloc(bitmapnum, bmp->w * bmp->h * 2);
1396 bmp->data = (ptr_u)data;
1397 bmp->palette = NULL;
1398 memset( data, 0, bmp->w * bmp->h * 2);
1401 SDL_assert( &be->bm == bmp );
1402 #ifdef BMPMAN_NDEBUG
1403 SDL_assert( be->data_size > 0 );
1406 // some sanity checks on flags
1407 SDL_assert(!((flags & BMP_AABITMAP) && (flags & BMP_TEX_ANY))); // no aabitmap textures
1410 int pcx_error=pcx_read_bitmap_8bpp( be->filename, data, palette );
1411 if ( pcx_error != PCX_ERROR_NONE ) {
1412 // Error( LOCATION, "Couldn't open '%s'\n", be->filename );
1413 //Error( LOCATION, "Couldn't open '%s'\n", filename );
1420 if(flags & BMP_AABITMAP){
1421 pcx_error = pcx_read_bitmap_16bpp_aabitmap( be->filename, data );
1423 pcx_error = pcx_read_bitmap_16bpp( be->filename, data );
1425 if ( pcx_error != PCX_ERROR_NONE ) {
1426 // Error( LOCATION, "Couldn't open '%s'\n", be->filename );
1427 //Error( LOCATION, "Couldn't open '%s'\n", filename );
1432 #ifdef BMPMAN_NDEBUG
1433 SDL_assert( be->data_size > 0 );
1437 bm_convert_format( bitmapnum, bmp, bpp, flags );
1440 void bm_lock_ani( int handle, int bitmapnum, bitmap_entry *be, bitmap *bmp, ubyte bpp, ubyte flags )
1443 anim_instance *the_anim_instance;
1447 int first_frame, nframes;
1449 first_frame = be->info.ani.first_frame;
1450 nframes = bm_bitmaps[first_frame].info.ani.num_frames;
1453 the_anim = anim_load(bm_bitmaps[first_frame].filename);
1454 SDL_assert_release(the_anim); // should never have gotten this far
1456 the_anim_instance = init_anim_instance(the_anim, bpp);
1457 SDL_assert_release(the_anim); // should never have gotten this far
1459 int can_drop_frames = 0;
1461 if ( the_anim->total_frames != bm_bitmaps[first_frame].info.ani.num_frames ) {
1462 can_drop_frames = 1;
1464 bm = &bm_bitmaps[first_frame].bm;
1466 size = bm->w * bm->h * 2;
1468 size = bm->w * bm->h;
1471 for ( i=0; i<nframes; i++ ) {
1472 bm = &bm_bitmaps[first_frame+i].bm;
1474 // Unload any existing data
1475 bm_free_data( first_frame+i );
1478 // briefing editor in Fred2 uses aabitmaps (ani's) - force to 8 bit
1479 if(Fred_running || Is_standalone){
1485 frame_data = anim_get_next_raw_buffer(the_anim_instance, 0 ,flags & BMP_AABITMAP ? 1 : 0, bm->bpp);
1487 if (frame_data == NULL) {
1490 // Error(LOCATION,"Fatal error locking .ani file: %s\n", be->filename);
1493 bm->data = (ptr_u)bm_malloc(first_frame + i, size);
1499 dptr = (ubyte *)bm->data;
1501 if ( (bm->w!=the_anim->width) || (bm->h!=the_anim->height) ) {
1503 // Int3(); // not ready yet - should only be ingame
1508 fix u, utmp, v, du, dv;
1512 du = ( the_anim->width*F1_0 ) / bm->w;
1513 dv = ( the_anim->height*F1_0 ) / bm->h;
1515 for (h = 0; h < bm->h; h++) {
1516 ubyte *drow = &dptr[bm->w * h];
1517 ubyte *srow = &sptr[f2i(v)*the_anim->width];
1521 for (w = 0; w < bm->w; w++) {
1522 *drow++ = srow[f2i(utmp)];
1531 fix u, utmp, v, du, dv;
1535 du = ( the_anim->width*F1_0 ) / bm->w;
1536 dv = ( the_anim->height*F1_0 ) / bm->h;
1538 for (h = 0; h < bm->h; h++) {
1539 ushort *drow = &((ushort*)dptr)[bm->w * h];
1540 ushort *srow = &((ushort*)sptr)[f2i(v)*the_anim->width];
1544 for (w = 0; w < bm->w; w++) {
1545 *drow++ = srow[f2i(utmp)];
1553 memcpy(dptr, sptr, size);
1556 bm_convert_format( first_frame+i, bm, bpp, flags );
1559 if ( (i < nframes-1) && can_drop_frames ) {
1560 anim_get_next_raw_buffer(the_anim_instance, 0, flags & BMP_AABITMAP ? 1 : 0, bm->bpp);
1563 //mprintf(( "Checksum = %d\n", be->palette_checksum ));
1566 free_anim_instance(the_anim_instance);
1567 anim_free(the_anim);
1571 void bm_lock_user( int handle, int bitmapnum, bitmap_entry *be, bitmap *bmp, ubyte bpp, ubyte flags )
1576 // Unload any existing data
1577 bm_free_data( bitmapnum );
1579 switch( be->info.user.bpp ) {
1580 case 16: // user 16 bit bitmap
1582 bmp->flags = be->info.user.flags;
1583 bmp->data = (ptr_u)be->info.user.data;
1586 case 8: // Going from 8 bpp to something (probably only for aabitmaps)
1588 SDL_assert(flags & BMP_AABITMAP);
1590 bmp->data = (uint)malloc(bmp->w * bmp->h * 2);
1591 bmp->flags = be->info.user.flags;
1592 bmp->palette = NULL;
1594 // go through and map the pixels
1595 for(idx=0; idx<bmp->w * bmp->h; idx++){
1596 bit_16 = (ushort)((ubyte*)be->info.user.data)[idx];
1597 SDL_assert(bit_16 <= 255);
1599 // stuff the final result
1600 memcpy((char*)bmp->data + (idx * 2), &bit_16, sizeof(ushort));
1603 SDL_assert(flags & BMP_AABITMAP);
1605 bmp->flags = be->info.user.flags;
1606 bmp->data = (ptr_u)be->info.user.data;
1610 // Error( LOCATION, "Unhandled user bitmap conversion from %d to %d bpp", be->info.user.bpp, bmp->bpp );
1613 bm_convert_format( bitmapnum, bmp, bpp, flags );
1616 void bm_lock_tga( int handle, int bitmapnum, bitmap_entry *be, bitmap *bmp, ubyte bpp, ubyte flags )
1620 // Unload any existing data
1621 bm_free_data( bitmapnum );
1623 if(Fred_running || Is_standalone){
1624 SDL_assert(bpp == 8);
1626 SDL_assert(bpp == 16);
1629 // should never try to make an aabitmap out of a targa
1630 SDL_assert(!(flags & BMP_AABITMAP));
1632 // allocate bitmap data
1634 data = (ubyte*)bm_malloc(bitmapnum, bmp->w * bmp->h * 2);
1636 data = (ubyte*)bm_malloc(bitmapnum, bmp->w * bmp->h);
1639 bmp->data = (ptr_u)data;
1640 bmp->palette = NULL;
1642 memset( data, 0, bmp->w * bmp->h * 2);
1644 memset( data, 0, bmp->w * bmp->h );
1647 SDL_assert( &be->bm == bmp );
1648 #ifdef BMPMAN_NDEBUG
1649 SDL_assert( be->data_size > 0 );
1652 int tga_error=targa_read_bitmap( be->filename, data, NULL, (bpp == 16) ? 2 : 1);
1653 if ( tga_error != TARGA_ERROR_NONE ) {
1654 // Error( LOCATION, "Couldn't open '%s'\n", be->filename );
1655 //Error( LOCATION, "Couldn't open '%s'\n", filename );
1659 #ifdef BMPMAN_NDEBUG
1660 SDL_assert( be->data_size > 0 );
1664 bm_convert_format( bitmapnum, bmp, bpp, flags );
1667 MONITOR( NumBitmapPage );
1668 MONITOR( SizeBitmapPage );
1670 // This locks down a bitmap and returns a pointer to a bitmap
1671 // that can be accessed until you call bm_unlock. Only lock
1672 // a bitmap when you need it! This will convert it into the
1673 // appropriate format also.
1674 bitmap * bm_lock( int handle, ubyte bpp, ubyte flags )
1680 if ( !bm_inited ) bm_init();
1682 int bitmapnum = handle % MAX_BITMAPS;
1683 SDL_assert( bm_bitmaps[bitmapnum].handle == handle ); // INVALID BITMAP HANDLE
1685 // flags &= (~BMP_RLE);
1687 // if we're on a standalone server, aways for it to lock to 8 bits
1692 // otherwise do it as normal
1694 if (flags & BMP_AABITMAP) {
1695 SDL_assert( bpp == 8 );
1697 SDL_assert( bpp == 16 );
1701 be = &bm_bitmaps[bitmapnum];
1704 // If you hit this assert, chances are that someone freed the
1705 // wrong bitmap and now someone is trying to use that bitmap.
1707 SDL_assert( be->type != BM_TYPE_NONE );
1709 // Increment ref count for bitmap since lock was made on it.
1710 SDL_assert(be->ref_count >= 0);
1711 be->ref_count++; // Lock it before we page in data; this prevents a callback from freeing this
1712 // as it gets read in
1714 // Mark this bitmap as used this frame
1715 #ifdef BMPMAN_NDEBUG
1716 if ( be->used_this_frame < 255 ) {
1717 be->used_this_frame++;
1721 // if bitmap hasn't been loaded yet, then load it from disk
1722 // reread the bitmap from disk under certain conditions
1723 int pal_changed = 0;
1724 int rle_changed = 0;
1725 int fake_xparent_changed = 0;
1726 if ( (bmp->data == 0) || (bpp != bmp->bpp) || pal_changed || rle_changed || fake_xparent_changed ) {
1727 SDL_assert(be->ref_count == 1);
1729 if ( be->type != BM_TYPE_USER ) {
1730 if ( bmp->data == 0 ) {
1731 nprintf (("BmpMan","Loading %s for the first time.\n", be->filename));
1732 } else if ( bpp != bmp->bpp ) {
1733 nprintf (("BmpMan","Reloading %s from bitdepth %d to bitdepth %d\n", be->filename, bmp->bpp, bpp));
1734 } else if ( pal_changed ) {
1735 nprintf (("BmpMan","Reloading %s to remap palette\n", be->filename));
1736 } else if ( rle_changed ) {
1737 nprintf (("BmpMan","Reloading %s to change RLE.\n", be->filename));
1738 } else if ( fake_xparent_changed ) {
1739 nprintf (("BmpMan","Reloading %s to change fake xparency.\n", be->filename));
1743 MONITOR_INC( NumBitmapPage, 1 );
1744 MONITOR_INC( SizeBitmapPage, bmp->w*bmp->h );
1747 if ( be->type != BM_TYPE_USER ) {
1748 nprintf(( "Paging", "Loading %s (%dx%dx%dx--)\n", be->filename, bmp->w, bmp->h, bpp ));
1752 // select proper format
1753 if(flags & BMP_AABITMAP){
1754 BM_SELECT_ALPHA_TEX_FORMAT();
1755 } else if(flags & BMP_TEX_ANY){
1756 BM_SELECT_TEX_FORMAT();
1758 BM_SELECT_SCREEN_FORMAT();
1761 switch ( be->type ) {
1763 bm_lock_pcx( handle, bitmapnum, be, bmp, bpp, flags );
1767 bm_lock_ani( handle, bitmapnum, be, bmp, bpp, flags );
1771 bm_lock_user( handle, bitmapnum, be, bmp, bpp, flags );
1775 bm_lock_tga( handle, bitmapnum, be, bmp, bpp, flags );
1779 Warning(LOCATION, "Unsupported type in bm_lock -- %d\n", be->type );
1783 // always go back to screen format
1784 BM_SELECT_SCREEN_FORMAT();
1787 if ( be->type == BM_TYPE_ANI ) {
1788 int i,first = bm_bitmaps[bitmapnum].info.ani.first_frame;
1790 for ( i=0; i< bm_bitmaps[first].info.ani.num_frames; i++ ) {
1791 // Mark all the bitmaps in this bitmap or animation as recently used
1792 bm_bitmaps[first+i].last_used = timer_get_milliseconds();
1794 // Mark all the bitmaps in this bitmap or animation as used for the usage tracker.
1795 #ifdef BMPMAN_NDEBUG
1796 bm_bitmaps[first+i].used_count++;
1798 bm_bitmaps[first+i].used_flags = flags;
1801 // Mark all the bitmaps in this bitmap or animation as recently used
1802 be->last_used = timer_get_milliseconds();
1804 // Mark all the bitmaps in this bitmap or animation as used for the usage tracker.
1805 #ifdef BMPMAN_NDEBUG
1808 be->used_flags = flags;
1816 // Decrements the ref_count member of the bitmap_entry struct. A bitmap can only be unloaded
1817 // when the ref_count is 0.
1819 void bm_unlock( int handle )
1823 int bitmapnum = handle % MAX_BITMAPS;
1824 SDL_assert( bm_bitmaps[bitmapnum].handle == handle ); // INVALID BITMAP HANDLE
1826 SDL_assert(bitmapnum >= 0 && bitmapnum < MAX_BITMAPS);
1827 if ( !bm_inited ) bm_init();
1829 be = &bm_bitmaps[bitmapnum];
1832 SDL_assert(be->ref_count >= 0); // Trying to unlock data more times than lock was called!!!
1841 char *bm_get_filename(int handle)
1845 n = handle % MAX_BITMAPS;
1846 SDL_assert(bm_bitmaps[n].handle == handle); // INVALID BITMAP HANDLE
1847 return bm_bitmaps[n].filename;
1850 void bm_get_palette(int handle, ubyte *pal, char *name, const int name_len)
1855 int n= handle % MAX_BITMAPS;
1856 SDL_assert( bm_bitmaps[n].handle == handle ); // INVALID BITMAP HANDLE
1858 filename = bm_bitmaps[n].filename;
1861 SDL_strlcpy( name, filename, name_len );
1864 int pcx_error=pcx_read_header( filename, &w, &h, pal );
1865 if ( pcx_error != PCX_ERROR_NONE ){
1866 // Error(LOCATION, "Couldn't open '%s'\n", filename );
1870 // --------------------------------------------------------------------------------------
1871 // bm_release() - unloads the bitmap's data and entire slot, so bitmap 'n' won't be valid anymore
1873 // parameters: n => index into bm_bitmaps ( index returned from bm_load() or bm_create() )
1877 void bm_release(int handle)
1881 int n = handle % MAX_BITMAPS;
1883 SDL_assert(n >= 0 && n < MAX_BITMAPS);
1884 be = &bm_bitmaps[n];
1886 if ( bm_bitmaps[n].type == BM_TYPE_NONE ) {
1887 return; // Already been released?
1890 if ( bm_bitmaps[n].type != BM_TYPE_USER ) {
1894 SDL_assert( be->handle == handle ); // INVALID BITMAP HANDLE
1896 // If it is locked, cannot free it.
1897 if (be->ref_count != 0) {
1898 nprintf(("BmpMan", "tried to unload %s that has a lock count of %d.. not unloading\n", be->filename, be->ref_count));
1902 // free texture, if we should
1903 if (gr_screen.gf_release_texture) {
1904 gr_release_texture(handle);
1909 if ( bm_bitmaps[n].type == BM_TYPE_USER ) {
1910 bm_bitmaps[n].info.user.data = NULL;
1911 bm_bitmaps[n].info.user.bpp = 0;
1915 bm_bitmaps[n].type = BM_TYPE_NONE;
1917 // Fill in bogus structures!
1920 SDL_strlcpy( bm_bitmaps[n].filename, "IVE_BEEN_RELEASED!", sizeof(bm_bitmaps[0].filename) );
1921 bm_bitmaps[n].signature = 0xDEADBEEF; // a unique signature identifying the data
1922 bm_bitmaps[n].palette_checksum = 0xDEADBEEF; // checksum used to be sure bitmap is in current palette
1925 #ifdef BMPMAN_NDEBUG
1926 bm_bitmaps[n].data_size = -1; // How much data this bitmap uses
1928 bm_bitmaps[n].ref_count = -1; // Number of locks on bitmap. Can't unload unless ref_count is 0.
1931 bm_bitmaps[n].bm.w = bm_bitmaps[n].bm.h = -1;
1933 // Stuff needed for animations
1934 // Stuff needed for user bitmaps
1935 memset( &bm_bitmaps[n].info, 0, sizeof(bm_extra_info) );
1937 bm_bitmaps[n].handle = -1;
1945 // --------------------------------------------------------------------------------------
1946 // bm_unload() - unloads the data, but not the bitmap info.
1948 // parameters: n => index into bm_bitmaps ( index returned from bm_load() or bm_create() )
1950 // returns: 0 => unload failed
1951 // 1 => unload successful
1953 int bm_unload( int handle )
1958 int n = handle % MAX_BITMAPS;
1960 SDL_assert(n >= 0 && n < MAX_BITMAPS);
1961 be = &bm_bitmaps[n];
1964 if ( be->type == BM_TYPE_NONE ) {
1965 return 0; // Already been released
1968 SDL_assert( be->handle == handle ); // INVALID BITMAP HANDLE!
1970 // If it is locked, cannot free it.
1971 if (be->ref_count != 0) {
1972 nprintf(("BmpMan", "tried to unload %s that has a lock count of %d.. not unloading\n", be->filename, be->ref_count));
1976 nprintf(("BmpMan", "unloading %s. %dx%dx%d\n", be->filename, bmp->w, bmp->h, bmp->bpp));
1977 bm_free_data(n); // clears flags, bbp, data, etc
1983 // unload all used bitmaps
1984 void bm_unload_all()
1988 for (i = 0; i < MAX_BITMAPS; i++) {
1989 if ( bm_bitmaps[i].type != BM_TYPE_NONE ) {
1990 bm_unload(bm_bitmaps[i].handle);
1996 DCF(bmpman,"Shows/changes bitmap caching parameters and usage")
1999 dc_get_arg(ARG_STRING);
2000 if ( !strcmp( Dc_arg, "flush" )) {
2001 dc_printf( "Total RAM usage before flush: %d bytes\n", bm_texture_ram );
2003 for (i = 0; i < MAX_BITMAPS; i++) {
2004 if ( bm_bitmaps[i].type != BM_TYPE_NONE ) {
2008 dc_printf( "Total RAM after flush: %d bytes\n", bm_texture_ram );
2009 } else if ( !strcmp( Dc_arg, "ram" )) {
2010 dc_get_arg(ARG_INT);
2011 Bm_max_ram = Dc_arg_int*1024*1024;
2013 // print usage, not stats
2019 dc_printf( "Usage: BmpMan keyword\nWhere keyword can be in the following forms:\n" );
2020 dc_printf( "BmpMan flush Unloads all bitmaps.\n" );
2021 dc_printf( "BmpMan ram x Sets max mem usage to x MB. (Set to 0 to have no limit.)\n" );
2022 dc_printf( "\nUse '? BmpMan' to see status of Bitmap manager.\n" );
2023 Dc_status = 0; // don't print status if help is printed. Too messy.
2027 dc_printf( "Total RAM usage: %d bytes\n", bm_texture_ram );
2030 if ( Bm_max_ram > 1024*1024 )
2031 dc_printf( "Max RAM allowed: %.1f MB\n", i2fl(Bm_max_ram)/(1024.0f*1024.0f) );
2032 else if ( Bm_max_ram > 1024 )
2033 dc_printf( "Max RAM allowed: %.1f KB\n", i2fl(Bm_max_ram)/(1024.0f) );
2034 else if ( Bm_max_ram > 0 )
2035 dc_printf( "Max RAM allowed: %d bytes\n", Bm_max_ram );
2037 dc_printf( "No RAM limit\n" );
2043 // Marks a texture as being used for this level
2044 void bm_page_in_texture( int bitmapnum, int nframes )
2047 for (i=0; i<nframes;i++ ) {
2048 int n = bitmapnum % MAX_BITMAPS;
2050 bm_bitmaps[n+i].preloaded = 1;
2052 bm_bitmaps[n+i].used_flags = BMP_TEX_OTHER;
2056 // marks a texture as being a transparent textyre used for this level
2057 // Marks a texture as being used for this level
2058 // If num_frames is passed, assume this is an animation
2059 void bm_page_in_xparent_texture( int bitmapnum, int nframes)
2062 for (i=0; i<nframes;i++ ) {
2063 int n = bitmapnum % MAX_BITMAPS;
2065 bm_bitmaps[n+i].preloaded = 3;
2067 // bm_bitmaps[n+i].used_flags = BMP_NO_PALETTE_MAP;
2068 bm_bitmaps[n+i].used_flags = BMP_TEX_XPARENT;
2072 // Marks an aabitmap as being used for this level
2073 void bm_page_in_aabitmap( int bitmapnum, int nframes )
2077 for (i=0; i<nframes;i++ ) {
2078 int n = bitmapnum % MAX_BITMAPS;
2080 bm_bitmaps[n+i].preloaded = 2;
2082 bm_bitmaps[n+i].used_flags = BMP_AABITMAP;
2088 // Tell the bitmap manager to start keeping track of what bitmaps are used where.
2089 void bm_page_in_start()
2095 // Mark all as inited
2096 for (i = 0; i < MAX_BITMAPS; i++) {
2097 if ( bm_bitmaps[i].type != BM_TYPE_NONE ) {
2098 bm_unload(bm_bitmaps[i].handle);
2100 bm_bitmaps[i].preloaded = 0;
2101 #ifdef BMPMAN_NDEBUG
2102 bm_bitmaps[i].used_count = 0;
2104 bm_bitmaps[i].used_flags = 0;
2109 void bm_page_in_stop()
2112 int ship_info_index;
2114 nprintf(( "BmpInfo","BMPMAN: Loading all used bitmaps.\n" ));
2116 // Load all the ones that are supposed to be loaded for this level.
2119 #ifdef BMPMAN_NDEBUG
2123 int d3d_preloading = 1;
2127 for (i = 0; i < MAX_BITMAPS; i++) {
2128 if ( bm_bitmaps[i].type != BM_TYPE_NONE ) {
2129 if ( bm_bitmaps[i].preloaded ) {
2130 #ifdef BMPMAN_SPECIAL_NONDARK
2131 // if this is a texture, check to see if a ship uses it
2132 ship_info_index = ship_get_texture(bm_bitmaps[i].handle);
2133 // use the colors from this ship
2134 if((ship_info_index >= 0) && (Ship_info[ship_info_index].num_nondark_colors > 0)){
2135 // mprintf(("Using custom pixels for %s\n", Ship_info[ship_info_index].name));
2136 palman_set_nondarkening(Ship_info[ship_info_index].nondark_colors, Ship_info[ship_info_index].num_nondark_colors);
2138 // use the colors from the default table
2140 // mprintf(("Using default pixels\n"));
2141 palman_set_nondarkening(Palman_non_darkening_default, Palman_num_nondarkening_default);
2145 // if preloaded == 3, load it as an xparent texture
2146 if(bm_bitmaps[i].used_flags == BMP_AABITMAP){
2147 bm_lock( bm_bitmaps[i].handle, 8, bm_bitmaps[i].used_flags );
2149 bm_lock( bm_bitmaps[i].handle, 16, bm_bitmaps[i].used_flags );
2151 bm_unlock( bm_bitmaps[i].handle );
2153 if ( d3d_preloading ) {
2154 if ( !gr_preload(bm_bitmaps[i].handle, (bm_bitmaps[i].preloaded==2) ) ) {
2155 mprintf(( "Out of VRAM. Done preloading.\n" ));
2161 #ifdef BMPMAN_NDEBUG
2162 if ( Bm_ram_freed ) {
2163 nprintf(( "BmpInfo","BMPMAN: Not enough cache memory to load all level bitmaps\n" ));
2171 nprintf(( "BmpInfo","BMPMAN: Loaded %d bitmaps that are marked as used for this level.\n", n ));
2173 int total_bitmaps = 0;
2174 for (i = 0; i < MAX_BITMAPS; i++) {
2175 if ( bm_bitmaps[i].type != BM_TYPE_NONE ) {
2178 if ( bm_bitmaps[i].type == BM_TYPE_USER ) {
2179 mprintf(( "User bitmap '%s'\n", bm_bitmaps[i].filename ));
2183 mprintf(( "Bmpman: %d/%d bitmap slots in use.\n", total_bitmaps, MAX_BITMAPS ));
2184 //mprintf(( "Bmpman: Usage went from %d KB to %d KB.\n", usage_before/1024, usage_after/1024 ));
2189 int bm_get_cache_slot( int bitmap_id, int separate_ani_frames )
2191 int n = bitmap_id % MAX_BITMAPS;
2193 SDL_assert( bm_bitmaps[n].handle == bitmap_id ); // INVALID BITMAP HANDLE
2195 bitmap_entry *be = &bm_bitmaps[n];
2197 if ( (!separate_ani_frames) && (be->type == BM_TYPE_ANI) ) {
2198 return be->info.ani.first_frame;
2205 // convert a 24 bit value to a 16 bit value
2206 void bm_24_to_16(int bit_24, ushort *bit_16)
2208 ubyte *pixel = (ubyte*)&bit_24;
2211 bm_set_components((ubyte*)bit_16, (ubyte*)&pixel[0], (ubyte*)&pixel[1], (ubyte*)&pixel[2], &alpha);
2214 void (*bm_set_components)(ubyte *pixel, ubyte *r, ubyte *g, ubyte *b, ubyte *a) = NULL;
2216 void bm_set_components_argb_16_screen(ubyte *pixel, ubyte *rv, ubyte *gv, ubyte *bv, ubyte *av)
2218 *((ushort*)pixel) |= (ushort)(( (int)*rv / Gr_current_red->scale ) << Gr_current_red->shift);
2219 *((ushort*)pixel) |= (ushort)(( (int)*gv / Gr_current_green->scale ) << Gr_current_green->shift);
2220 *((ushort*)pixel) |= (ushort)(( (int)*bv / Gr_current_blue->scale ) << Gr_current_blue->shift);
2222 *((ushort*)pixel) = (ushort)Gr_current_green->mask;
2226 void bm_set_components_argb_32_screen(ubyte *pixel, ubyte *rv, ubyte *gv, ubyte *bv, ubyte *av)
2228 *((uint*)pixel) |= (uint)(( (int)*rv / Gr_current_red->scale ) << Gr_current_red->shift);
2229 *((uint*)pixel) |= (uint)(( (int)*gv / Gr_current_green->scale ) << Gr_current_green->shift);
2230 *((uint*)pixel) |= (uint)(( (int)*bv / Gr_current_blue->scale ) << Gr_current_blue->shift);
2232 *((uint*)pixel) = (uint)Gr_current_green->mask;
2236 void bm_set_components_argb_16_tex(ubyte *pixel, ubyte *rv, ubyte *gv, ubyte *bv, ubyte *av)
2238 *((ushort*)pixel) |= (ushort)(( (int)*rv / Gr_current_red->scale ) << Gr_current_red->shift);
2239 *((ushort*)pixel) |= (ushort)(( (int)*gv / Gr_current_green->scale ) << Gr_current_green->shift);
2240 *((ushort*)pixel) |= (ushort)(( (int)*bv / Gr_current_blue->scale ) << Gr_current_blue->shift);
2241 *((ushort*)pixel) &= ~(Gr_current_alpha->mask);
2243 *((ushort*)pixel) |= (ushort)(Gr_current_alpha->mask);
2245 *((ushort*)pixel) = 0;
2249 void bm_set_components_argb_32_tex(ubyte *pixel, ubyte *rv, ubyte *gv, ubyte *bv, ubyte *av)
2251 *((ushort*)pixel) |= (ushort)(( (int)*rv / Gr_current_red->scale ) << Gr_current_red->shift);
2252 *((ushort*)pixel) |= (ushort)(( (int)*gv / Gr_current_green->scale ) << Gr_current_green->shift);
2253 *((ushort*)pixel) |= (ushort)(( (int)*bv / Gr_current_blue->scale ) << Gr_current_blue->shift);
2254 *((ushort*)pixel) &= ~(Gr_current_alpha->mask);
2256 *((ushort*)pixel) |= (ushort)(Gr_current_alpha->mask);
2258 *((ushort*)pixel) = 0;
2262 // for selecting pixel formats
2263 void BM_SELECT_SCREEN_FORMAT()
2265 Gr_current_red = &Gr_red;
2266 Gr_current_green = &Gr_green;
2267 Gr_current_blue = &Gr_blue;
2268 Gr_current_alpha = &Gr_alpha;
2271 if ( gr_is_32bit() ) {
2272 bm_set_components = bm_set_components_argb_32_screen;
2274 bm_set_components = bm_set_components_argb_16_screen;
2278 void BM_SELECT_TEX_FORMAT()
2280 Gr_current_red = &Gr_t_red;
2281 Gr_current_green = &Gr_t_green;
2282 Gr_current_blue = &Gr_t_blue;
2283 Gr_current_alpha = &Gr_t_alpha;
2286 if ( gr_is_32bit() ) {
2287 bm_set_components = bm_set_components_argb_32_tex;
2289 bm_set_components = bm_set_components_argb_16_tex;
2293 void BM_SELECT_ALPHA_TEX_FORMAT()
2295 Gr_current_red = &Gr_ta_red;
2296 Gr_current_green = &Gr_ta_green;
2297 Gr_current_blue = &Gr_ta_blue;
2298 Gr_current_alpha = &Gr_ta_alpha;
2301 if ( gr_is_32bit() ) {
2302 bm_set_components = bm_set_components_argb_32_tex;
2304 bm_set_components = bm_set_components_argb_16_tex;
2308 // set the rgba components of a pixel, any of the parameters can be -1
2310 void bm_set_components(ubyte *pixel, ubyte *rv, ubyte *gv, ubyte *bv, ubyte *av)
2314 // pick a byte size - 32 bits only if 32 bit mode d3d and screen format
2315 if(D3D_32bit && (Gr_current_red == &Gr_red)){
2320 *((uint*)pixel) |= (uint)(( (int)*rv / Gr_current_red->scale ) << Gr_current_red->shift);
2322 *((ushort*)pixel) |= (ushort)(( (int)*rv / Gr_current_red->scale ) << Gr_current_red->shift);
2325 *((uint*)pixel) |= (uint)(( (int)*gv / Gr_current_green->scale ) << Gr_current_green->shift);
2327 *((ushort*)pixel) |= (ushort)(( (int)*gv / Gr_current_green->scale ) << Gr_current_green->shift);
2330 *((uint*)pixel) |= (uint)(( (int)*bv / Gr_current_blue->scale ) << Gr_current_blue->shift);
2332 *((ushort*)pixel) |= (ushort)(( (int)*bv / Gr_current_blue->scale ) << Gr_current_blue->shift);
2335 // NOTE - this is a semi-hack. For direct3d we don't use an alpha bit, so if *av == 0, we just set the whole pixel to be Gr_green.mask
2336 // ergo, we need to do this _last_
2337 switch(Bm_pixel_format){
2338 // glide has an alpha channel so we have to unset ir or set it each time
2339 case BM_PIXEL_FORMAT_ARGB:
2340 SDL_assert(!bit_32);
2341 *((ushort*)pixel) &= ~(0x8000);
2343 *((ushort*)pixel) |= 0x8000;
2347 // this d3d format has no alpha channel, so only make it "transparent", never make it "non-transparent"
2348 case BM_PIXEL_FORMAT_D3D:
2349 SDL_assert(!bit_32);
2351 *((ushort*)pixel) = (ushort)Gr_current_green->mask;
2355 // nice 1555 texture format
2356 case BM_PIXEL_FORMAT_ARGB_D3D:
2357 // if we're writing to normal texture format
2358 if(Gr_current_red == &Gr_t_red){
2359 SDL_assert(!bit_32);
2360 *((ushort*)pixel) &= ~(Gr_current_alpha->mask);
2362 *((ushort*)pixel) |= (ushort)(Gr_current_alpha->mask);
2364 *((ushort*)pixel) = 0;
2367 // otherwise if we're writing to screen format, still do it the green mask way
2371 *((uint*)pixel) = (uint)Gr_current_green->mask;
2373 *((ushort*)pixel) = (ushort)Gr_current_green->mask;
2382 // get the rgba components of a pixel, any of the parameters can be NULL
2383 void bm_get_components(ubyte *pixel, ubyte *r, ubyte *g, ubyte *b, ubyte *a)
2387 // pick a byte size - 32 bits only if 32 bit mode d3d and screen format
2388 if ( gr_is_32bit() && (Gr_current_red == &Gr_red) ) {
2394 *r = ubyte(( (*((uint*)pixel) & Gr_current_red->mask)>>Gr_current_red->shift)*Gr_current_red->scale);
2396 *r = ubyte(( ( ((ushort*)pixel)[0] & Gr_current_red->mask)>>Gr_current_red->shift)*Gr_current_red->scale);
2401 *g = ubyte(( (*((uint*)pixel) & Gr_current_green->mask) >>Gr_current_green->shift)*Gr_current_green->scale);
2403 *g = ubyte(( ( ((ushort*)pixel)[0] & Gr_current_green->mask) >>Gr_current_green->shift)*Gr_current_green->scale);
2408 *b = ubyte(( (*((uint*)pixel) & Gr_current_blue->mask)>>Gr_current_blue->shift)*Gr_current_blue->scale);
2410 *b = ubyte(( ( ((ushort*)pixel)[0] & Gr_current_blue->mask)>>Gr_current_blue->shift)*Gr_current_blue->scale);
2414 // get the alpha value
2418 // if we're writing to a normal texture, use nice alpha bits
2419 if(Gr_current_red == &Gr_t_red){
2420 SDL_assert(!bit_32);
2422 if(!(*((ushort*)pixel) & Gr_current_alpha->mask)){
2426 // otherwise do it as normal
2429 if(*((int*)pixel) == Gr_current_green->mask){
2433 if(*((ushort*)pixel) == Gr_current_green->mask){
2442 void bm_get_filename(int bitmapnum, char *filename, const int max_len)
2444 int n = bitmapnum % MAX_BITMAPS;
2447 SDL_strlcpy(filename, bm_bitmaps[n].filename, max_len);
2450 // given a bitmap and a section, return the size (w, h)
2451 void bm_get_section_size(int bitmapnum, int sx, int sy, int *w, int *h)
2454 bitmap_section_info *sections = NULL;
2457 SDL_assert((w != NULL) && (h != NULL));
2458 if((w == NULL) || (h == NULL)){
2463 bm_get_info(bitmapnum, &bw, &bh, NULL, NULL, NULL, §ions);
2465 // determine the width and height of this section
2466 if ( gr_screen.use_sections && (sections != NULL) ) {
2467 *w = sx < (sections->num_x - 1) ? MAX_BMAP_SECTION_SIZE : bw - sections->sx[sx];
2468 *h = sy < (sections->num_y - 1) ? MAX_BMAP_SECTION_SIZE : bh - sections->sy[sy];