1 /* $Id: bitmap.c,v 1.8 2005-07-30 01:51:42 chris Exp $ */
3 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
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6 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
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9 FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
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11 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
12 COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
17 * Graphical routines for manipulating grs_bitmaps.
40 void gr_set_bitmap_data (grs_bitmap *bm, unsigned char *data)
43 // if (bm->bm_data!=data)
44 ogl_freebmtexture(bm);
48 Assert (bm->iMagic == BM_MAGIC_NUMBER);
49 Win32_SetTextureBits (bm, data, bm->bm_flags & BM_FLAG_RLE);
53 grs_bitmap *gr_create_bitmap(int w, int h )
55 return gr_create_bitmap_raw (w, h, d_malloc( MAX_BMP_SIZE(w, h) ));
58 grs_bitmap *gr_create_bitmap_raw(int w, int h, unsigned char * raw_data )
62 new = (grs_bitmap *)d_malloc( sizeof(grs_bitmap) );
63 gr_init_bitmap (new, 0, 0, 0, w, h, w, raw_data);
69 void gr_init_bitmap( grs_bitmap *bm, int mode, int x, int y, int w, int h, int bytesperline, unsigned char * data ) // TODO: virtualize
72 Assert (bm->iMagic != BM_MAGIC_NUMBER || bm->pvSurface == NULL);
81 bm->bm_rowsize = bytesperline;
85 bm->iMagic = BM_MAGIC_NUMBER;
90 Win32_CreateTexture (bm);
93 bm->bm_parent=NULL;bm->gltexture=NULL;
97 gr_set_bitmap_data (bm, data);
100 gr_set_bitmap_data (bm, d_malloc( MAX_BMP_SIZE(w, h) ));
103 #ifdef BITMAP_SELECTOR
108 void gr_init_bitmap_alloc( grs_bitmap *bm, int mode, int x, int y, int w, int h, int bytesperline)
110 gr_init_bitmap(bm, mode, x, y, w, h, bytesperline, 0);
111 gr_set_bitmap_data(bm, d_malloc( MAX_BMP_SIZE(w, h) ));
114 void gr_init_bitmap_data (grs_bitmap *bm) // TODO: virtulize
118 Assert (bm->iMagic != BM_MAGIC_NUMBER);
119 bm->iMagic = BM_MAGIC_NUMBER;
120 bm->pvSurface = NULL;
123 // ogl_freebmtexture(bm);//not what we want here.
124 bm->bm_parent=NULL;bm->gltexture=NULL;
128 grs_bitmap *gr_create_sub_bitmap(grs_bitmap *bm, int x, int y, int w, int h )
132 new = (grs_bitmap *)d_malloc( sizeof(grs_bitmap) );
133 gr_init_sub_bitmap (new, bm, x, y, w, h);
138 void gr_free_bitmap(grs_bitmap *bm )
140 gr_free_bitmap_data (bm);
145 void gr_free_sub_bitmap(grs_bitmap *bm )
157 void gr_free_bitmap_data (grs_bitmap *bm) // TODO: virtulize
160 Assert (bm->iMagic == BM_MAGIC_NUMBER);
162 Win32_FreeTexture (bm);
164 if (bm->bm_data == BM_D3D_RENDER)
168 ogl_freebmtexture(bm);
170 if (bm->bm_data != NULL)
171 d_free (bm->bm_data);
175 void gr_init_sub_bitmap (grs_bitmap *bm, grs_bitmap *bmParent, int x, int y, int w, int h ) // TODO: virtualize
177 bm->bm_x = x + bmParent->bm_x;
178 bm->bm_y = y + bmParent->bm_y;
181 bm->bm_flags = bmParent->bm_flags;
182 bm->bm_type = bmParent->bm_type;
183 bm->bm_rowsize = bmParent->bm_rowsize;
186 bm->gltexture=bmParent->gltexture;
187 bm->bm_parent=bmParent;
190 Assert (bmParent->iMagic == BM_MAGIC_NUMBER);
191 bm->iMagic = BM_MAGIC_NUMBER;
192 bm->pvSurface = bmParent->pvSurface;
193 if (bm->bm_type == BM_DIRECTX)
195 bm->bm_data = bmParent->bm_data;
200 bm->bm_data = bmParent->bm_data+(unsigned int)((y*bmParent->bm_rowsize)+x);
205 void decode_data_asm(ubyte *data, int num_pixels, ubyte * colormap, int * count );
207 #if !defined(NO_ASM) && defined(__WATCOMC__)
209 #pragma aux decode_data_asm parm [esi] [ecx] [edi] [ebx] modify exact [esi edi eax ebx ecx] = \
213 "inc dword ptr [ebx+eax*4]" \
220 #elif !defined(NO_ASM) && defined(__GNUC__)
222 inline void decode_data_asm(ubyte *data, int num_pixels, ubyte * colormap, int * count ) {
224 __asm__ __volatile__ (
227 "movb (%%esi), %%al;"
228 "incl (%%ebx, %%eax, 4);"
229 "movb (%%edi, %%eax), %%al;"
230 "movb %%al, (%%esi);"
234 : "=S" (dummy[0]), "=c" (dummy[1]), "=D" (dummy[2]), "=b" (dummy[3])
235 : "0" (data), "1" (num_pixels), "2" (colormap), "3" (count)
239 #elif !defined(NO_ASM) && defined(_MSC_VER)
241 __inline void decode_data_asm(ubyte *data, int num_pixels, ubyte * colormap, int * count )
251 inc dword ptr [ebx+eax*4]
260 #else // NO_ASM or unknown compiler
262 void decode_data_asm(ubyte *data, int num_pixels, ubyte *colormap, int *count)
267 for (i = 0; i < num_pixels; i++) {
270 *data = colormap[mapped];
277 void gr_set_bitmap_flags (grs_bitmap *pbm, int flags)
280 Assert (pbm->iMagic == BM_MAGIC_NUMBER);
284 if ((flags & BM_FLAG_TRANSPARENT) != (pbm->bm_flags & BM_FLAG_TRANSPARENT))
286 Win32_SetTransparent (pbm->pvSurface, flags & BM_FLAG_TRANSPARENT);
290 pbm->bm_flags = flags;
293 void gr_set_transparent (grs_bitmap *pbm, int bTransparent)
297 gr_set_bitmap_flags (pbm, pbm->bm_flags | BM_FLAG_TRANSPARENT);
301 gr_set_bitmap_flags (pbm, pbm->bm_flags & ~BM_FLAG_TRANSPARENT);
305 void gr_set_super_transparent (grs_bitmap *pbm, int bTransparent)
309 gr_set_bitmap_flags (pbm, pbm->bm_flags & ~BM_FLAG_SUPER_TRANSPARENT);
313 gr_set_bitmap_flags (pbm, pbm->bm_flags | BM_FLAG_SUPER_TRANSPARENT);
317 void build_colormap_good( ubyte * palette, ubyte * colormap, int * freq )
321 for (i=0; i<256; i++ ) {
325 *colormap++ = gr_find_closest_color( r, g, b );
330 void gr_remap_bitmap( grs_bitmap * bmp, ubyte * palette, int transparent_color, int super_transparent_color )
335 if (bmp->bm_type != BM_LINEAR)
336 return; //can't do it
338 // This should be build_colormap_asm, but we're not using invert table, so...
339 build_colormap_good( palette, colormap, freq );
341 if ( (super_transparent_color>=0) && (super_transparent_color<=255))
342 colormap[super_transparent_color] = 254;
344 if ( (transparent_color>=0) && (transparent_color<=255))
345 colormap[transparent_color] = TRANSPARENCY_COLOR;
347 decode_data_asm(bmp->bm_data, bmp->bm_w * bmp->bm_h, colormap, freq );
349 if ( (transparent_color>=0) && (transparent_color<=255) && (freq[transparent_color]>0) )
350 gr_set_transparent (bmp, 1);
352 if ( (super_transparent_color>=0) && (super_transparent_color<=255) && (freq[super_transparent_color]>0) )
353 gr_set_super_transparent (bmp, 0);
356 void gr_remap_bitmap_good( grs_bitmap * bmp, ubyte * palette, int transparent_color, int super_transparent_color )
360 build_colormap_good( palette, colormap, freq );
362 if ( (super_transparent_color>=0) && (super_transparent_color<=255))
363 colormap[super_transparent_color] = 254;
365 if ( (transparent_color>=0) && (transparent_color<=255))
366 colormap[transparent_color] = TRANSPARENCY_COLOR;
368 if (bmp->bm_w == bmp->bm_rowsize)
369 decode_data_asm(bmp->bm_data, bmp->bm_w * bmp->bm_h, colormap, freq );
372 ubyte *p = bmp->bm_data;
373 for (y=0;y<bmp->bm_h;y++,p+=bmp->bm_rowsize)
374 decode_data_asm(p, bmp->bm_w, colormap, freq );
377 if ( (transparent_color>=0) && (transparent_color<=255) && (freq[transparent_color]>0) )
378 gr_set_transparent (bmp, 1);
380 if ( (super_transparent_color>=0) && (super_transparent_color<=255) && (freq[super_transparent_color]>0) )
381 gr_set_super_transparent (bmp, 1);
384 #ifdef BITMAP_SELECTOR
385 int gr_bitmap_assign_selector( grs_bitmap * bmp )
387 if (!dpmi_allocate_selector( bmp->bm_data, bmp->bm_w*bmp->bm_h, &bmp->bm_selector )) {
388 bmp->bm_selector = 0;
395 void gr_bitmap_check_transparency( grs_bitmap * bmp )
402 for (y=0; y<bmp->bm_h; y++ ) {
403 for (x=0; x<bmp->bm_w; x++ ) {
404 if (*data++ == TRANSPARENCY_COLOR ) {
405 gr_set_transparent (bmp, 1);
409 data += bmp->bm_rowsize - bmp->bm_w;