1 /* $Id: bitblt.c,v 1.5 2002-07-17 21:55:19 bradleyb Exp $ */
3 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
4 SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
5 END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
6 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
7 IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
8 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
9 FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
10 CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
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.
30 int gr_bitblt_dest_step_shift = 0;
31 int gr_bitblt_double = 0;
32 ubyte *gr_bitblt_fade_table=NULL;
34 void gr_bm_ubitblt00_rle(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest);
35 void gr_bm_ubitblt00m_rle(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest);
36 void gr_bm_ubitblt0x_rle(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest, int masked);
38 void gr_bm_ubitblt01(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest);
39 void gr_bm_ubitblt02(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest);
46 void gr_linear_movsd( ubyte * source, ubyte * dest, unsigned int nbytes) {
47 memcpy(dest,source,nbytes);
50 void gr_linear_rep_movsdm(ubyte *src, ubyte *dest, int num_pixels) {
58 void gr_linear_rep_movsdm_faded(ubyte * src, ubyte * dest, int num_pixels, ubyte fade_value ) {
62 *dest++=gr_fade_table[((int)fade_value<<8)|(int)c];
65 void gr_linear_rep_movsd_2x(ubyte * source, ubyte * dest, uint nbytes ) {
72 *((unsigned short *)dest)++=((short)c<<8)|(short)c;
81 void gr_ubitmap00( int x, int y, grs_bitmap *bm )
89 dest_rowsize=grd_curcanv->cv_bitmap.bm_rowsize << gr_bitblt_dest_step_shift;
90 dest = &(grd_curcanv->cv_bitmap.bm_data[ dest_rowsize*y+x ]);
94 for (y1=0; y1 < bm->bm_h; y1++ ) {
96 gr_linear_rep_movsd_2x( src, dest, bm->bm_w );
98 gr_linear_movsd( src, dest, bm->bm_w );
99 src += bm->bm_rowsize;
100 dest+= (int)(dest_rowsize);
104 void gr_ubitmap00m( int x, int y, grs_bitmap *bm )
109 unsigned char * dest;
112 dest_rowsize=grd_curcanv->cv_bitmap.bm_rowsize << gr_bitblt_dest_step_shift;
113 dest = &(grd_curcanv->cv_bitmap.bm_data[ dest_rowsize*y+x ]);
117 if (gr_bitblt_fade_table==NULL) {
118 for (y1=0; y1 < bm->bm_h; y1++ ) {
119 gr_linear_rep_movsdm( src, dest, bm->bm_w );
120 src += bm->bm_rowsize;
121 dest+= (int)(dest_rowsize);
124 for (y1=0; y1 < bm->bm_h; y1++ ) {
125 gr_linear_rep_movsdm_faded( src, dest, bm->bm_w, gr_bitblt_fade_table[y1+y] );
126 src += bm->bm_rowsize;
127 dest+= (int)(dest_rowsize);
149 // From Linear to ModeX
150 void gr_bm_ubitblt01(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
160 sstep = src->bm_rowsize;
161 dstep = dest->bm_rowsize << gr_bitblt_dest_step_shift;
163 if (!gr_bitblt_double) {
164 for (plane=0; plane<4; plane++ ) {
165 gr_modex_setplane( (plane+dx)&3 );
166 sbits = src->bm_data + (src->bm_rowsize * sy) + sx + plane;
167 dbits = &gr_video_memory[(dest->bm_rowsize * dy) + ((plane+dx)/4) ];
169 if ( (w&3) > plane ) w1++;
170 for (y=dy; y < dy+h; y++ ) {
171 modex_copy_scanline( sbits, dbits, w1 );
177 for (plane=0; plane<4; plane++ ) {
178 gr_modex_setplane( (plane+dx)&3 );
179 sbits = src->bm_data + (src->bm_rowsize * sy) + sx + plane/2;
180 dbits = &gr_video_memory[(dest->bm_rowsize * dy) + ((plane+dx)/4) ];
182 if ( (w&3) > plane ) w1++;
183 for (y=dy; y < dy+h; y++ ) {
184 modex_copy_scanline_2x( sbits, dbits, w1 );
193 // From Linear to ModeX masked
194 void gr_bm_ubitblt01m(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
205 sbits = src->bm_data + (src->bm_rowsize * sy) + sx;
206 dbits = &gr_video_memory[(dest->bm_rowsize * dy) + dx/4];
208 for (x=dx; x < dx+w; x++ ) {
209 gr_modex_setplane( x&3 );
213 //for (y=0; y < h; y++ ) {
214 // *dbits1 = *sbits1;
215 // sbits1 += src_bm_rowsize;
216 // dbits1 += dest_bm_rowsize;
218 modex_copy_column_m(sbits, dbits, h, src->bm_rowsize, dest->bm_rowsize << gr_bitblt_dest_step_shift );
229 void gr_ubitmap012( int x, int y, grs_bitmap *bm )
236 for (y1=y; y1 < (y+bm->bm_h); y1++ ) {
237 for (x1=x; x1 < (x+bm->bm_w); x1++ ) {
238 gr_setcolor( *src++ );
244 void gr_ubitmap012m( int x, int y, grs_bitmap *bm )
251 for (y1=y; y1 < (y+bm->bm_h); y1++ ) {
252 for (x1=x; x1 < (x+bm->bm_w); x1++ ) {
263 void gr_ubitmapGENERIC(int x, int y, grs_bitmap * bm)
267 for (y1=0; y1 < bm->bm_h; y1++ ) {
268 for (x1=0; x1 < bm->bm_w; x1++ ) {
269 gr_setcolor( gr_gpixel(bm,x1,y1) );
270 gr_upixel( x+x1, y+y1 );
275 void gr_ubitmapGENERICm(int x, int y, grs_bitmap * bm)
280 for (y1=0; y1 < bm->bm_h; y1++ ) {
281 for (x1=0; x1 < bm->bm_w; x1++ ) {
282 c = gr_gpixel(bm,x1,y1);
285 gr_upixel( x+x1, y+y1 );
291 void gr_ubitmap( int x, int y, grs_bitmap *bm )
294 source = bm->bm_type;
297 if (source==BM_LINEAR) {
301 if ( bm->bm_flags & BM_FLAG_RLE )
302 gr_bm_ubitblt00_rle(bm->bm_w, bm->bm_h, x, y, 0, 0, bm, &grd_curcanv->cv_bitmap );
304 gr_ubitmap00( x, y, bm );
308 ogl_ubitmapm(x,y,bm);
313 Assert ((int)grd_curcanv->cv_bitmap.bm_data == BM_D3D_RENDER || (int)grd_curcanv->cv_bitmap.bm_data == BM_D3D_DISPLAY);
314 Win32_BlitLinearToDirectX_bm(bm, 0, 0, bm->bm_w, bm->bm_h, x, y, 0);
319 if ( bm->bm_flags & BM_FLAG_RLE )
320 gr_bm_ubitblt0x_rle(bm->bm_w, bm->bm_h, x, y, 0, 0, bm, &grd_curcanv->cv_bitmap, 0 );
322 gr_bm_ubitblt02( bm->bm_w, bm->bm_h, x, y, 0, 0, bm, &grd_curcanv->cv_bitmap);
325 gr_bm_ubitblt01(bm->bm_w, bm->bm_h, x+XOFFSET, y+YOFFSET, 0, 0, bm, &grd_curcanv->cv_bitmap);
329 gr_ubitmap012( x, y, bm );
333 gr_ubitmapGENERIC(x, y, bm);
337 void gr_ubitmapm( int x, int y, grs_bitmap *bm )
341 source = bm->bm_type;
344 if (source==BM_LINEAR) {
348 if ( bm->bm_flags & BM_FLAG_RLE )
349 gr_bm_ubitblt00m_rle(bm->bm_w, bm->bm_h, x, y, 0, 0, bm, &grd_curcanv->cv_bitmap );
351 gr_ubitmap00m( x, y, bm );
355 ogl_ubitmapm(x,y,bm);
360 if (bm->bm_w < 35 && bm->bm_h < 35) {
361 // ugly hack needed for reticle
362 if ( bm->bm_flags & BM_FLAG_RLE )
363 gr_bm_ubitblt0x_rle(bm->bm_w, bm->bm_h, x, y, 0, 0, bm, &grd_curcanv->cv_bitmap, 1 );
365 gr_ubitmapGENERICm(x, y, bm);
368 Assert ((int)grd_curcanv->cv_bitmap.bm_data == BM_D3D_RENDER || (int)grd_curcanv->cv_bitmap.bm_data == BM_D3D_DISPLAY);
369 Win32_BlitLinearToDirectX_bm(bm, 0, 0, bm->bm_w, bm->bm_h, x, y, 1);
374 gr_ubitmapGENERICm(x, y, bm);
377 gr_bm_ubitblt01m(bm->bm_w, bm->bm_h, x+XOFFSET, y+YOFFSET, 0, 0, bm, &grd_curcanv->cv_bitmap);
381 gr_ubitmap012m( x, y, bm );
385 gr_ubitmapGENERICm(x, y, bm);
391 // From linear to SVGA
392 void gr_bm_ubitblt02(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
394 unsigned char * sbits;
396 unsigned int offset, EndingOffset, VideoLocation;
398 int sbpr, dbpr, y1, page, BytesToMove;
400 sbpr = src->bm_rowsize;
402 dbpr = dest->bm_rowsize << gr_bitblt_dest_step_shift;
404 VideoLocation = (unsigned int)dest->bm_data + (dest->bm_rowsize * dy) + dx;
406 sbits = src->bm_data + ( sbpr*sy ) + sx;
408 for (y1=0; y1 < h; y1++ ) {
410 page = VideoLocation >> 16;
411 offset = VideoLocation & 0xFFFF;
413 gr_vesa_setpage( page );
415 EndingOffset = offset+w-1;
417 if ( EndingOffset <= 0xFFFF )
419 if ( gr_bitblt_double )
420 gr_linear_rep_movsd_2x( (void *)sbits, (void *)(offset+gr_video_memory), w );
422 gr_linear_movsd( (void *)sbits, (void *)(offset+gr_video_memory), w );
424 VideoLocation += dbpr;
429 BytesToMove = 0xFFFF-offset+1;
431 if ( gr_bitblt_double )
432 gr_linear_rep_movsd_2x( (void *)sbits, (void *)(offset+gr_video_memory), BytesToMove );
434 gr_linear_movsd( (void *)sbits, (void *)(offset+gr_video_memory), BytesToMove );
437 gr_vesa_setpage(page);
439 if ( gr_bitblt_double )
440 gr_linear_rep_movsd_2x( (void *)(sbits+BytesToMove/2), (void *)gr_video_memory, EndingOffset - 0xFFFF );
442 gr_linear_movsd( (void *)(sbits+BytesToMove), (void *)gr_video_memory, EndingOffset - 0xFFFF );
444 VideoLocation += dbpr;
450 // From SVGA to linear
451 void gr_bm_ubitblt20(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
453 unsigned char * dbits;
455 unsigned int offset, offset1, offset2;
457 int sbpr, dbpr, y1, page;
459 dbpr = dest->bm_rowsize;
461 sbpr = src->bm_rowsize;
463 for (y1=0; y1 < h; y1++ ) {
465 offset2 = (unsigned int)src->bm_data + (sbpr * (y1+sy)) + sx;
466 dbits = dest->bm_data + (dbpr * (y1+dy)) + dx;
468 page = offset2 >> 16;
469 offset = offset2 & 0xFFFF;
470 offset1 = offset+w-1;
471 gr_vesa_setpage( page );
473 if ( offset1 > 0xFFFF ) {
474 // Overlaps two pages
475 while( offset <= 0xFFFF )
476 *dbits++ = gr_video_memory[offset++];
477 offset1 -= (0xFFFF+1);
480 gr_vesa_setpage(page);
482 while( offset <= offset1 )
483 *dbits++ = gr_video_memory[offset++];
488 //@extern int Interlacing_on;
490 // From Linear to Linear
491 void gr_bm_ubitblt00(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
493 unsigned char * dbits;
494 unsigned char * sbits;
495 //int src_bm_rowsize_2, dest_bm_rowsize_2;
500 sbits = src->bm_data + (src->bm_rowsize * sy) + sx;
501 dbits = dest->bm_data + (dest->bm_rowsize * dy) + dx;
503 dstep = dest->bm_rowsize << gr_bitblt_dest_step_shift;
505 // No interlacing, copy the whole buffer.
506 if (gr_bitblt_double)
507 for (i=0; i < h; i++ ) {
508 gr_linear_rep_movsd_2x( sbits, dbits, w );
509 sbits += src->bm_rowsize;
513 for (i=0; i < h; i++ ) {
514 gr_linear_movsd( sbits, dbits, w );
515 //memcpy(dbits, sbits, w);
516 sbits += src->bm_rowsize;
521 // From Linear to Linear Masked
522 void gr_bm_ubitblt00m(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
524 unsigned char * dbits;
525 unsigned char * sbits;
526 //int src_bm_rowsize_2, dest_bm_rowsize_2;
530 sbits = src->bm_data + (src->bm_rowsize * sy) + sx;
531 dbits = dest->bm_data + (dest->bm_rowsize * dy) + dx;
533 // No interlacing, copy the whole buffer.
535 if (gr_bitblt_fade_table==NULL) {
536 for (i=0; i < h; i++ ) {
537 gr_linear_rep_movsdm( sbits, dbits, w );
538 sbits += src->bm_rowsize;
539 dbits += dest->bm_rowsize;
542 for (i=0; i < h; i++ ) {
543 gr_linear_rep_movsdm_faded( sbits, dbits, w, gr_bitblt_fade_table[dy+i] );
544 sbits += src->bm_rowsize;
545 dbits += dest->bm_rowsize;
551 void gr_bm_bitblt(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
553 int dx1=dx, dx2=dx+dest->bm_w-1;
554 int dy1=dy, dy2=dy+dest->bm_h-1;
556 int sx1=sx, sx2=sx+src->bm_w-1;
557 int sy1=sy, sy2=sy+src->bm_h-1;
559 if ((dx1 >= dest->bm_w ) || (dx2 < 0)) return;
560 if ((dy1 >= dest->bm_h ) || (dy2 < 0)) return;
561 if ( dx1 < 0 ) { sx1 += -dx1; dx1 = 0; }
562 if ( dy1 < 0 ) { sy1 += -dy1; dy1 = 0; }
563 if ( dx2 >= dest->bm_w ) { dx2 = dest->bm_w-1; }
564 if ( dy2 >= dest->bm_h ) { dy2 = dest->bm_h-1; }
566 if ((sx1 >= src->bm_w ) || (sx2 < 0)) return;
567 if ((sy1 >= src->bm_h ) || (sy2 < 0)) return;
568 if ( sx1 < 0 ) { dx1 += -sx1; sx1 = 0; }
569 if ( sy1 < 0 ) { dy1 += -sy1; sy1 = 0; }
570 if ( sx2 >= src->bm_w ) { sx2 = src->bm_w-1; }
571 if ( sy2 >= src->bm_h ) { sy2 = src->bm_h-1; }
573 // Draw bitmap bm[x,y] into (dx1,dy1)-(dx2,dy2)
583 gr_bm_ubitblt(w,h, dx1, dy1, sx1, sy1, src, dest );
586 void gr_bm_ubitblt(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
590 if ( (src->bm_type == BM_LINEAR) && (dest->bm_type == BM_LINEAR ))
592 if ( src->bm_flags & BM_FLAG_RLE )
593 gr_bm_ubitblt00_rle( w, h, dx, dy, sx, sy, src, dest );
595 gr_bm_ubitblt00( w, h, dx, dy, sx, sy, src, dest );
600 if ( (src->bm_type == BM_LINEAR) && (dest->bm_type == BM_OGL ))
602 ogl_ubitblt(w, h, dx, dy, sx, sy, src, dest);
605 if ( (src->bm_type == BM_OGL) && (dest->bm_type == BM_LINEAR ))
607 ogl_ubitblt_tolinear(w, h, dx, dy, sx, sy, src, dest);
610 if ( (src->bm_type == BM_OGL) && (dest->bm_type == BM_OGL ))
612 ogl_ubitblt_copy(w, h, dx, dy, sx, sy, src, dest);
618 if ( (src->bm_type == BM_LINEAR) && (dest->bm_type == BM_DIRECTX ))
620 Assert ((int)dest->bm_data == BM_D3D_RENDER || (int)dest->bm_data == BM_D3D_DISPLAY);
621 Win32_BlitLinearToDirectX_bm (src, sx, sy, w, h, dx, dy, 0);
624 if ( (src->bm_type == BM_DIRECTX) && (dest->bm_type == BM_LINEAR ))
628 if ( (src->bm_type == BM_DIRECTX) && (dest->bm_type == BM_DIRECTX ))
634 if ( (src->bm_flags & BM_FLAG_RLE ) && (src->bm_type == BM_LINEAR) ) {
635 gr_bm_ubitblt0x_rle(w, h, dx, dy, sx, sy, src, dest, 0 );
639 if ( (src->bm_type == BM_LINEAR) && (dest->bm_type == BM_SVGA ))
641 gr_bm_ubitblt02( w, h, dx, dy, sx, sy, src, dest );
645 if ( (src->bm_type == BM_SVGA) && (dest->bm_type == BM_LINEAR ))
647 gr_bm_ubitblt20( w, h, dx, dy, sx, sy, src, dest );
651 if ( (src->bm_type == BM_LINEAR) && (dest->bm_type == BM_MODEX ))
653 gr_bm_ubitblt01( w, h, dx+XOFFSET, dy+YOFFSET, sx, sy, src, dest );
657 for (y1=0; y1 < h; y1++ ) {
658 for (x1=0; x1 < w; x1++ ) {
659 gr_bm_pixel( dest, dx+x1, dy+y1, gr_gpixel(src,sx+x1,sy+y1) );
664 // Clipped bitmap ...
666 void gr_bitmap( int x, int y, grs_bitmap *bm )
668 int dx1=x, dx2=x+bm->bm_w-1;
669 int dy1=y, dy2=y+bm->bm_h-1;
672 if ((dx1 >= grd_curcanv->cv_bitmap.bm_w ) || (dx2 < 0)) return;
673 if ((dy1 >= grd_curcanv->cv_bitmap.bm_h) || (dy2 < 0)) return;
674 if ( dx1 < 0 ) { sx = -dx1; dx1 = 0; }
675 if ( dy1 < 0 ) { sy = -dy1; dy1 = 0; }
676 if ( dx2 >= grd_curcanv->cv_bitmap.bm_w ) { dx2 = grd_curcanv->cv_bitmap.bm_w-1; }
677 if ( dy2 >= grd_curcanv->cv_bitmap.bm_h ) { dy2 = grd_curcanv->cv_bitmap.bm_h-1; }
679 // Draw bitmap bm[x,y] into (dx1,dy1)-(dx2,dy2)
681 gr_bm_ubitblt(dx2-dx1+1,dy2-dy1+1, dx1, dy1, sx, sy, bm, &grd_curcanv->cv_bitmap );
685 void gr_bitmapm( int x, int y, grs_bitmap *bm )
687 int dx1=x, dx2=x+bm->bm_w-1;
688 int dy1=y, dy2=y+bm->bm_h-1;
691 if ((dx1 >= grd_curcanv->cv_bitmap.bm_w ) || (dx2 < 0)) return;
692 if ((dy1 >= grd_curcanv->cv_bitmap.bm_h) || (dy2 < 0)) return;
693 if ( dx1 < 0 ) { sx = -dx1; dx1 = 0; }
694 if ( dy1 < 0 ) { sy = -dy1; dy1 = 0; }
695 if ( dx2 >= grd_curcanv->cv_bitmap.bm_w ) { dx2 = grd_curcanv->cv_bitmap.bm_w-1; }
696 if ( dy2 >= grd_curcanv->cv_bitmap.bm_h ) { dy2 = grd_curcanv->cv_bitmap.bm_h-1; }
698 // Draw bitmap bm[x,y] into (dx1,dy1)-(dx2,dy2)
700 if ( (bm->bm_type == BM_LINEAR) && (grd_curcanv->cv_bitmap.bm_type == BM_LINEAR ))
702 if ( bm->bm_flags & BM_FLAG_RLE )
703 gr_bm_ubitblt00m_rle(dx2-dx1+1,dy2-dy1+1, dx1, dy1, sx, sy, bm, &grd_curcanv->cv_bitmap );
705 gr_bm_ubitblt00m(dx2-dx1+1,dy2-dy1+1, dx1, dy1, sx, sy, bm, &grd_curcanv->cv_bitmap );
709 gr_bm_ubitbltm(dx2-dx1+1,dy2-dy1+1, dx1, dy1, sx, sy, bm, &grd_curcanv->cv_bitmap );
713 void gr_bm_ubitbltm(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
719 if ( (src->bm_type == BM_LINEAR) && (dest->bm_type == BM_OGL ))
721 ogl_ubitblt(w, h, dx, dy, sx, sy, src, dest);
724 if ( (src->bm_type == BM_OGL) && (dest->bm_type == BM_LINEAR ))
726 ogl_ubitblt_tolinear(w, h, dx, dy, sx, sy, src, dest);
729 if ( (src->bm_type == BM_OGL) && (dest->bm_type == BM_OGL ))
731 ogl_ubitblt_copy(w, h, dx, dy, sx, sy, src, dest);
736 if ( (src->bm_type == BM_LINEAR) && (dest->bm_type == BM_DIRECTX ))
738 Assert ((int)dest->bm_data == BM_D3D_RENDER || (int)dest->bm_data == BM_D3D_DISPLAY);
739 Win32_BlitLinearToDirectX_bm (src, sx, sy, w, h, dx, dy, 1);
742 if ( (src->bm_type == BM_DIRECTX) && (dest->bm_type == BM_DIRECTX ))
744 Assert ((int)src->bm_data == BM_D3D_RENDER || (int)src->bm_data == BM_D3D_DISPLAY);
745 // Win32_BlitDirectXToDirectX (w, h, dx, dy, sx, sy, src->bm_data, dest->bm_data, 0);
751 for (y1=0; y1 < h; y1++ ) {
752 for (x1=0; x1 < w; x1++ ) {
753 if ((c=gr_gpixel(src,sx+x1,sy+y1))!=255)
754 gr_bm_pixel( dest, dx+x1, dy+y1,c );
760 //-NOT-used // From linear to SVGA
761 //-NOT-used void gr_bm_ubitblt02_2x(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
763 //-NOT-used unsigned char * sbits;
765 //-NOT-used unsigned int offset, EndingOffset, VideoLocation;
767 //-NOT-used int sbpr, dbpr, y1, page, BytesToMove;
769 //-NOT-used sbpr = src->bm_rowsize;
771 //-NOT-used dbpr = dest->bm_rowsize << gr_bitblt_dest_step_shift;
773 //-NOT-used VideoLocation = (unsigned int)dest->bm_data + (dest->bm_rowsize * dy) + dx;
775 //-NOT-used sbits = src->bm_data + ( sbpr*sy ) + sx;
777 //-NOT-used for (y1=0; y1 < h; y1++ ) {
779 //-NOT-used page = VideoLocation >> 16;
780 //-NOT-used offset = VideoLocation & 0xFFFF;
782 //-NOT-used gr_vesa_setpage( page );
784 //-NOT-used EndingOffset = offset+w-1;
786 //-NOT-used if ( EndingOffset <= 0xFFFF )
788 //-NOT-used gr_linear_rep_movsd_2x( (void *)sbits, (void *)(offset+gr_video_memory), w );
790 //-NOT-used VideoLocation += dbpr;
791 //-NOT-used sbits += sbpr;
795 //-NOT-used BytesToMove = 0xFFFF-offset+1;
797 //-NOT-used gr_linear_rep_movsd_2x( (void *)sbits, (void *)(offset+gr_video_memory), BytesToMove );
800 //-NOT-used gr_vesa_setpage(page);
802 //-NOT-used gr_linear_rep_movsd_2x( (void *)(sbits+BytesToMove/2), (void *)gr_video_memory, EndingOffset - 0xFFFF );
804 //-NOT-used VideoLocation += dbpr;
805 //-NOT-used sbits += sbpr;
813 //-NOT-used // From Linear to Linear
814 //-NOT-used void gr_bm_ubitblt00_2x(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
816 //-NOT-used unsigned char * dbits;
817 //-NOT-used unsigned char * sbits;
818 //-NOT-used //int src_bm_rowsize_2, dest_bm_rowsize_2;
822 //-NOT-used sbits = src->bm_data + (src->bm_rowsize * sy) + sx;
823 //-NOT-used dbits = dest->bm_data + (dest->bm_rowsize * dy) + dx;
825 //-NOT-used // No interlacing, copy the whole buffer.
826 //-NOT-used for (i=0; i < h; i++ ) {
827 //-NOT-used gr_linear_rep_movsd_2x( sbits, dbits, w );
829 //-NOT-used sbits += src->bm_rowsize;
830 //-NOT-used dbits += dest->bm_rowsize << gr_bitblt_dest_step_shift;
834 void gr_bm_ubitblt00_rle(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
836 unsigned char * dbits;
837 unsigned char * sbits;
841 sbits = &src->bm_data[4 + src->bm_h];
842 for (i=0; i<sy; i++ )
843 sbits += (int)src->bm_data[4+i];
845 dbits = dest->bm_data + (dest->bm_rowsize * dy) + dx;
847 // No interlacing, copy the whole buffer.
848 for (i=0; i < h; i++ ) {
849 gr_rle_expand_scanline( dbits, sbits, sx, sx+w-1 );
850 sbits += (int)src->bm_data[4+i+sy];
851 dbits += dest->bm_rowsize << gr_bitblt_dest_step_shift;
855 void gr_bm_ubitblt00m_rle(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
857 unsigned char * dbits;
858 unsigned char * sbits;
862 sbits = &src->bm_data[4 + src->bm_h];
863 for (i=0; i<sy; i++ )
864 sbits += (int)src->bm_data[4+i];
866 dbits = dest->bm_data + (dest->bm_rowsize * dy) + dx;
868 // No interlacing, copy the whole buffer.
869 for (i=0; i < h; i++ ) {
870 gr_rle_expand_scanline_masked( dbits, sbits, sx, sx+w-1 );
871 sbits += (int)src->bm_data[4+i+sy];
872 dbits += dest->bm_rowsize << gr_bitblt_dest_step_shift;
878 extern void gr_rle_expand_scanline_generic( grs_bitmap * dest, int dx, int dy, ubyte *src,
879 int x1, int x2, int masked );
882 void gr_bm_ubitblt0x_rle(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src,
883 grs_bitmap * dest, int masked )
887 unsigned char * sbits;
889 sbits = &src->bm_data[4 + src->bm_h];
890 for (i=0; i<sy; i++ )
891 sbits += (int)src->bm_data[4+i];
893 for (y1=0; y1 < h; y1++ ) {
894 gr_rle_expand_scanline_generic( dest, dx, dy+y1, sbits, sx, sx+w-1,
896 sbits += (int)src->bm_data[4+y1+sy];
900 // rescalling bitmaps, 10/14/99 Jan Bobrowski jb@wizard.ae.krakow.pl
902 inline void scale_line(byte *in, byte *out, int ilen, int olen)
904 int a = olen/ilen, b = olen%ilen;
906 byte *end = out + olen;
922 void gr_bitmap_scale_to(grs_bitmap *src, grs_bitmap *dst)
924 byte *s = src->bm_data;
925 byte *d = dst->bm_data;
927 int a = dst->bm_h/h, b = dst->bm_h%h;
939 scale_line(s, d, src->bm_w, dst->bm_w);
940 d += dst->bm_rowsize;
942 s += src->bm_rowsize;
946 void show_fullscr(grs_bitmap *bm)
948 grs_bitmap * const scr = &grd_curcanv->cv_bitmap;
951 if(bm->bm_type == BM_LINEAR && scr->bm_type == BM_OGL) {
952 ogl_ubitblt_i(scr->bm_w,scr->bm_h,0,0,bm->bm_w,bm->bm_h,0,0,bm,scr);//use opengl to scale, faster and saves ram. -MPM
956 if(scr->bm_type != BM_LINEAR) {
957 grs_bitmap *tmp = gr_create_bitmap(scr->bm_w, scr->bm_h);
958 gr_bitmap_scale_to(bm, tmp);
959 gr_bitmap(0, 0, tmp);
963 gr_bitmap_scale_to(bm, scr);