2 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
3 SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
4 END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
5 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
6 IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
7 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
8 FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
9 CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
10 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
11 COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
16 * Routines for bitblt's.
29 #include "byteswap.h" // because of rle code that has short for row offsets
36 int gr_bitblt_dest_step_shift = 0;
37 int gr_bitblt_double = 0;
38 ubyte *gr_bitblt_fade_table=NULL;
40 extern void gr_vesa_bitmap( grs_bitmap * source, grs_bitmap * dest, int x, int y );
42 void gr_linear_movsd( ubyte * source, ubyte * dest, unsigned int nbytes);
43 // This code aligns edi so that the destination is aligned to a dword boundry before rep movsd
45 #if !defined(NO_ASM) && defined(__WATCOMC__)
47 #pragma aux gr_linear_movsd parm [esi] [edi] [ecx] modify exact [ecx esi edi eax ebx] = \
65 #elif !defined(NO_ASM) && defined(__GNUC__)
67 inline void gr_linear_movsd(ubyte *src, ubyte *dest, unsigned int num_pixels) {
69 __asm__ __volatile__ (
86 : "=S" (dummy[0]), "=D" (dummy[1]), "=c" (dummy[2])
87 : "0" (src), "1" (dest), "2" (num_pixels)
91 #elif !defined(NO_ASM) && defined(_MSC_VER)
93 __inline void gr_linear_movsd(ubyte *src, ubyte *dest, unsigned int num_pixels)
118 #else // NO_ASM or unknown compiler
123 #define test_byteblit 0
125 ubyte test_byteblit = 0;
128 void gr_linear_movsd(ubyte * src, ubyte * dest, unsigned int num_pixels )
135 // check to see if we are starting on an even byte boundry
136 // if not, move appropriate number of bytes to even
139 if ( (num_pixels < THRESHOLD) || (((int)src & 0x7) != ((int)dest & 0x7)) || test_byteblit ) {
140 for (i = 0; i < num_pixels; i++)
146 if ((r = (int)src & 0x7)) {
147 for (i = 0; i < 8 - r; i++)
156 for (i = 0; i < n; i++)
160 for (i = 0; i < r; i++)
164 #endif //#ifdef NO_ASM
167 static void gr_linear_rep_movsdm(ubyte * src, ubyte * dest, unsigned int num_pixels );
169 #if !defined(NO_ASM) && defined(__WATCOMC__)
171 #pragma aux gr_linear_rep_movsdm parm [esi] [edi] [ecx] modify exact [ecx esi edi eax] = \
175 "cmp al, " TRANSPARENCY_COLOR_STR \
183 #elif !defined(NO_ASM) && defined(__GNUC__)
185 static inline void gr_linear_rep_movsdm(ubyte * src, ubyte * dest, unsigned int num_pixels ) {
187 __asm__ __volatile__ (
189 " movb (%%esi), %%al;"
191 " cmpb $" TRANSPARENCY_COLOR_STR ", %%al;"
193 " movb %%al,(%%edi);"
198 : "=S" (dummy[0]), "=D" (dummy[1]), "=c" (dummy[2])
199 : "0" (src), "1" (dest), "2" (num_pixels)
203 #elif !defined(NO_ASM) && defined(_MSC_VER)
205 __inline void gr_linear_rep_movsdm(ubyte * src, ubyte * dest, unsigned int num_pixels )
211 mov ecx, [num_pixels]
214 cmp al, TRANSPARENCY_COLOR
226 static void gr_linear_rep_movsdm(ubyte * src, ubyte * dest, unsigned int num_pixels )
229 for (i=0; i<num_pixels; i++ ) {
230 if (*src != TRANSPARENCY_COLOR )
239 static void gr_linear_rep_movsdm_faded(ubyte * src, ubyte * dest, unsigned int num_pixels, ubyte fade_value );
241 #if !defined(NO_ASM) && defined(__WATCOMC__)
243 #pragma aux gr_linear_rep_movsdm_faded parm [esi] [edi] [ecx] [ebx] modify exact [ecx esi edi eax ebx] = \
249 "cmp al, " TRANSPARENCY_COLOR_STR \
251 "mov al, gr_fade_table[eax]" \
258 #elif !defined(NO_ASM) && defined(__GNUC__)
260 /* #pragma aux gr_linear_rep_movsdm_faded parm [esi] [edi] [ecx] [ebx] modify exact [ecx esi edi eax ebx] */
261 static inline void gr_linear_rep_movsdm_faded(ubyte * src, ubyte * dest, unsigned int num_pixels, ubyte fade_value ) {
263 __asm__ __volatile__ (
264 " xorl %%eax, %%eax;"
267 " movb (%%esi), %%al;"
269 " cmpb $" TRANSPARENCY_COLOR_STR ", %%al;"
272 " movb gr_fade_table(%%eax), %%al;"
274 " movb _gr_fade_table(%%eax), %%al;"
276 " movb %%al, (%%edi);"
281 : "=S" (dummy[0]), "=D" (dummy[1]), "=c" (dummy[2]), "=b" (dummy[3])
282 : "0" (src), "1" (dest), "2" (num_pixels), "3" (fade_value)
286 #elif !defined(NO_ASM) && defined(_MSC_VER)
288 __inline void gr_linear_rep_movsdm_faded(void * src, void * dest, unsigned int num_pixels, ubyte fade_value )
293 mov ecx, [num_pixels]
294 movzx ebx, byte ptr [fade_value]
300 cmp al, TRANSPARENCY_COLOR
302 mov al, gr_fade_table[eax]
313 static void gr_linear_rep_movsdm_faded(ubyte * src, ubyte * dest, unsigned int num_pixels, ubyte fade_value )
319 fade_base = gr_fade_table + (fade_value * 256);
321 for (i=num_pixels; i != 0; i-- )
324 if (source != (ubyte)TRANSPARENCY_COLOR )
325 *dest = *(fade_base + source);
334 void gr_linear_rep_movsd_2x(ubyte *src, ubyte *dest, unsigned int num_dest_pixels);
336 #if !defined(NO_ASM) && defined(__WATCOMC__)
338 #pragma aux gr_linear_rep_movsd_2x parm [esi] [edi] [ecx] modify exact [ecx esi edi eax ebx] = \
358 #elif !defined(NO_ASM) && defined (__GNUC__)
360 inline void gr_linear_rep_movsd_2x(ubyte *src, ubyte *dest, unsigned int num_dest_pixels)
362 /* #pragma aux gr_linear_rep_movsd_2x parm [esi] [edi] [ecx] modify exact [ecx esi edi eax ebx] */
364 __asm__ __volatile__ (
367 "movb (%%esi), %%al;"
368 "movb %%al, (%%edi);"
374 "movb (%%esi), %%al;"
376 "movw %%ax, (%%edi);"
383 : "=S" (dummy[0]), "=D" (dummy[1]), "=c" (dummy[2])
384 : "0" (src), "1" (dest), "2" (num_dest_pixels)
388 #elif !defined(NO_ASM) && defined(_MSC_VER)
390 __inline void gr_linear_rep_movsd_2x(ubyte *src, ubyte *dest, unsigned int num_dest_pixels)
395 mov ecx, [num_dest_pixels]
419 void gr_linear_rep_movsd_2x(ubyte *src, ubyte *dest, unsigned int num_pixels)
421 double *d = (double *)dest;
422 uint *s = (uint *)src;
427 if (num_pixels & 0x3) {
428 // not a multiple of 4? do single pixel at a time
429 for (i=0; i<num_pixels; i++) {
436 for (i = 0; i < num_pixels / 4; i++) {
439 temp = ((temp >> 8) & 0x00FFFF00) | (temp & 0xFF0000FF); // 0xABCDEFGH -> 0xABABCDEF
440 temp = ((temp >> 8) & 0x000000FF) | (temp & 0xFFFFFF00); // 0xABABCDEF -> 0xABABCDCD
441 doubletemp[0] = temp;
443 work = ((work << 8) & 0x00FFFF00) | (work & 0xFF0000FF); // 0xABCDEFGH -> 0xABEFGHGH
444 work = ((work << 8) & 0xFF000000) | (work & 0x00FFFFFF); // 0xABEFGHGH -> 0xEFEFGHGH
445 doubletemp[1] = work;
447 *d = *(double *) &(doubletemp[0]);
457 static void modex_copy_column(ubyte * src, ubyte * dest, int num_pixels, int src_rowsize, int dest_rowsize );
459 #if !defined(NO_ASM) && defined(__WATCOMC__)
461 #pragma aux modex_copy_column parm [esi] [edi] [ecx] [ebx] [edx] modify exact [ecx esi edi] = \
470 #elif !defined(NO_ASM) && defined(__GNUC__)
472 static inline void modex_copy_column(ubyte * src, ubyte * dest, int num_pixels, int src_rowsize, int dest_rowsize ) {
473 /*#pragma aux modex_copy_column parm [esi] [edi] [ecx] [ebx] [edx] modify exact [ecx esi edi] = */
474 __asm__ __volatile__ (
476 "movb (%%esi), %%al;"
478 "movb %%al, (%%edi);"
482 : : "S" (src), "D" (dest), "c" (num_pixels), "b" (src_rowsize), "d" (dest_rowsize)
483 : "%eax", "%ecx", "%esi", "%edi");
488 static void modex_copy_column(ubyte * src, ubyte * dest, int num_pixels, int src_rowsize, int dest_rowsize )
492 num_pixels = num_pixels;
493 src_rowsize = src_rowsize;
494 dest_rowsize = dest_rowsize;
501 static void modex_copy_column_m(ubyte * src, ubyte * dest, int num_pixels, int src_rowsize, int dest_rowsize );
503 #if !defined(NO_ASM) && defined(__WATCOMC__)
505 #pragma aux modex_copy_column_m parm [esi] [edi] [ecx] [ebx] [edx] modify exact [ecx esi edi] = \
509 "cmp al, " TRANSPARENCY_COLOR_STR \
517 #elif !defined(NO_ASM) && defined(__GNUC__)
519 static inline void modex_copy_column_m(ubyte * src, ubyte * dest, int num_pixels, int src_rowsize, int dest_rowsize ) {
520 /* #pragma aux modex_copy_column_m parm [esi] [edi] [ecx] [ebx] [edx] modify exact [ecx esi edi] = */
522 __asm__ __volatile__ (
524 "movb (%%esi), %%al;"
526 "cmpb $" TRANSPARENCY_COLOR_STR ", %%al;"
528 "movb %%al, (%%edi);"
533 : "=c" (dummy[0]), "=S" (dummy[1]), "=D" (dummy[2])
534 : "1" (src), "2" (dest), "0" (num_pixels), "b" (src_rowsize), "d" (dest_rowsize)
540 static void modex_copy_column_m(ubyte * src, ubyte * dest, int num_pixels, int src_rowsize, int dest_rowsize )
544 num_pixels = num_pixels;
545 src_rowsize = src_rowsize;
546 dest_rowsize = dest_rowsize;
552 #endif /* __MSDOS__ */
554 void gr_ubitmap00( int x, int y, grs_bitmap *bm )
559 unsigned char * dest;
562 dest_rowsize=grd_curcanv->cv_bitmap.bm_rowsize << gr_bitblt_dest_step_shift;
563 dest = &(grd_curcanv->cv_bitmap.bm_data[ dest_rowsize*y+x ]);
567 for (y1=0; y1 < bm->bm_h; y1++ ) {
568 if (gr_bitblt_double)
569 gr_linear_rep_movsd_2x( src, dest, bm->bm_w );
571 gr_linear_movsd( src, dest, bm->bm_w );
572 src += bm->bm_rowsize;
573 dest+= (int)(dest_rowsize);
577 void gr_ubitmap00m( int x, int y, grs_bitmap *bm )
582 unsigned char * dest;
585 dest_rowsize=grd_curcanv->cv_bitmap.bm_rowsize << gr_bitblt_dest_step_shift;
586 dest = &(grd_curcanv->cv_bitmap.bm_data[ dest_rowsize*y+x ]);
590 if (gr_bitblt_fade_table==NULL) {
591 for (y1=0; y1 < bm->bm_h; y1++ ) {
592 gr_linear_rep_movsdm( src, dest, bm->bm_w );
593 src += bm->bm_rowsize;
594 dest+= (int)(dest_rowsize);
597 for (y1=0; y1 < bm->bm_h; y1++ ) {
598 gr_linear_rep_movsdm_faded( src, dest, bm->bm_w, gr_bitblt_fade_table[y1+y] );
599 src += bm->bm_rowsize;
600 dest+= (int)(dest_rowsize);
625 static void modex_copy_scanline( ubyte * src, ubyte * dest, int npixels );
627 #if !defined(NO_ASM) && defined(__WATCOMC__)
629 #pragma aux modex_copy_scanline parm [esi] [edi] [ecx] modify exact [ecx esi edi eax ebx edx] = \
636 " mov al, [esi+8] " \
637 " mov ah, [esi+12] " \
640 " mov ah, [esi+4] " \
645 " jne next4pixels " \
658 #elif !defined (NO_ASM) && defined(__GNUC__)
660 static inline void modex_copy_scanline( ubyte * src, ubyte * dest, int npixels ) {
661 /* #pragma aux modex_copy_scanline parm [esi] [edi] [ecx] modify exact [ecx esi edi eax ebx edx] */
663 __asm__ __volatile__ (
664 " movl %%ecx, %%ebx;"
670 " movb 8(%%esi), %%al;"
671 " movb 12(%%esi), %%ah;"
673 " movb (%%esi), %%al;"
674 " movb 4(%%esi), %%ah;"
675 " movl %%eax, (%%edi);"
684 " movb (%%esi), %%al;"
686 " movb %%al, (%%edi);"
691 : "=c" (dummy[0]), "=S" (dummy[1]), "=D" (dummy[2])
692 : "1" (src), "2" (dest), "0" (npixels)
693 : "%eax", "%ebx", "%edx" );
698 static void modex_copy_scanline( ubyte * src, ubyte * dest, int npixels )
708 static void modex_copy_scanline_2x( ubyte * src, ubyte * dest, int npixels );
710 #if !defined(NO_ASM) && defined(__WATCOMC__)
712 #pragma aux modex_copy_scanline_2x parm [esi] [edi] [ecx] modify exact [ecx esi edi eax ebx edx] = \
719 " mov al, [esi+4] " \
720 " mov ah, [esi+6] " \
723 " mov ah, [esi+2] " \
728 " jne next4pixels " \
741 #elif !defined(NO_ASM) && defined(__GNUC__)
743 static inline void modex_copy_scanline_2x( ubyte * src, ubyte * dest, int npixels ) {
744 /* #pragma aux modex_copy_scanline_2x parm [esi] [edi] [ecx] modify exact [ecx esi edi eax ebx edx] = */
746 __asm__ __volatile__ (
747 " movl %%ecx, %%ebx;"
753 " movb 4(%%esi), %%al;"
754 " movb 6(%%esi), %%ah;"
756 " movb (%%esi), %%al;"
757 " movb 2(%%esi), %%ah;"
758 " movl %%eax, (%%edi);"
767 " movb (%%esi),%%al;"
769 " movb %%al, (%%edi);"
774 : "=c" (dummy[0]), "=S" (dummy[1]), "=D" (dummy[2])
775 : "1" (src), "2" (dest), "0" (npixels)
776 : "%eax", "%ebx", "%edx" );
781 static void modex_copy_scanline_2x( ubyte * src, ubyte * dest, int npixels )
792 // From Linear to ModeX
793 void gr_bm_ubitblt01(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
803 sstep = src->bm_rowsize;
804 dstep = dest->bm_rowsize << gr_bitblt_dest_step_shift;
806 if (!gr_bitblt_double) {
807 for (plane=0; plane<4; plane++ ) {
808 gr_modex_setplane( (plane+dx)&3 );
809 sbits = src->bm_data + (src->bm_rowsize * sy) + sx + plane;
810 dbits = &gr_video_memory[(dest->bm_rowsize * dy) + ((plane+dx)/4) ];
812 if ( (w&3) > plane ) w1++;
813 for (y=dy; y < dy+h; y++ ) {
814 modex_copy_scanline( sbits, dbits, w1 );
820 for (plane=0; plane<4; plane++ ) {
821 gr_modex_setplane( (plane+dx)&3 );
822 sbits = src->bm_data + (src->bm_rowsize * sy) + sx + plane/2;
823 dbits = &gr_video_memory[(dest->bm_rowsize * dy) + ((plane+dx)/4) ];
825 if ( (w&3) > plane ) w1++;
826 for (y=dy; y < dy+h; y++ ) {
827 modex_copy_scanline_2x( sbits, dbits, w1 );
836 // From Linear to ModeX masked
837 void gr_bm_ubitblt01m(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
848 sbits = src->bm_data + (src->bm_rowsize * sy) + sx;
849 dbits = &gr_video_memory[(dest->bm_rowsize * dy) + dx/4];
851 for (x=dx; x < dx+w; x++ ) {
852 gr_modex_setplane( x&3 );
856 //for (y=0; y < h; y++ ) {
857 // *dbits1 = *sbits1;
858 // sbits1 += src_bm_rowsize;
859 // dbits1 += dest_bm_rowsize;
861 modex_copy_column_m(sbits, dbits, h, src->bm_rowsize, dest->bm_rowsize << gr_bitblt_dest_step_shift );
869 #endif /* __MSDOS__ */
872 void gr_ubitmap012( int x, int y, grs_bitmap *bm )
879 for (y1=y; y1 < (y+bm->bm_h); y1++ ) {
880 for (x1=x; x1 < (x+bm->bm_w); x1++ ) {
881 gr_setcolor( *src++ );
887 void gr_ubitmap012m( int x, int y, grs_bitmap *bm )
894 for (y1=y; y1 < (y+bm->bm_h); y1++ ) {
895 for (x1=x; x1 < (x+bm->bm_w); x1++ ) {
896 if ( *src != TRANSPARENCY_COLOR ) {
905 void gr_ubitmapGENERIC(int x, int y, grs_bitmap * bm)
909 for (y1=0; y1 < bm->bm_h; y1++ ) {
910 for (x1=0; x1 < bm->bm_w; x1++ ) {
911 gr_setcolor( gr_gpixel(bm,x1,y1) );
912 gr_upixel( x+x1, y+y1 );
917 void gr_ubitmapGENERICm(int x, int y, grs_bitmap * bm)
922 for (y1=0; y1 < bm->bm_h; y1++ ) {
923 for (x1=0; x1 < bm->bm_w; x1++ ) {
924 c = gr_gpixel(bm,x1,y1);
925 if ( c != TRANSPARENCY_COLOR ) {
927 gr_upixel( x+x1, y+y1 );
935 // From linear to SVGA
936 void gr_bm_ubitblt02(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
938 unsigned char * sbits;
940 unsigned int offset, EndingOffset, VideoLocation;
942 int sbpr, dbpr, y1, page, BytesToMove;
944 sbpr = src->bm_rowsize;
946 dbpr = dest->bm_rowsize << gr_bitblt_dest_step_shift;
948 VideoLocation = (unsigned int)dest->bm_data + (dest->bm_rowsize * dy) + dx;
950 sbits = src->bm_data + ( sbpr*sy ) + sx;
952 for (y1=0; y1 < h; y1++ ) {
954 page = VideoLocation >> 16;
955 offset = VideoLocation & 0xFFFF;
957 gr_vesa_setpage( page );
959 EndingOffset = offset+w-1;
961 if ( EndingOffset <= 0xFFFF )
963 if ( gr_bitblt_double )
964 gr_linear_rep_movsd_2x( (void *)sbits, (void *)(offset+0xA0000), w );
966 gr_linear_movsd( (void *)sbits, (void *)(offset+0xA0000), w );
968 VideoLocation += dbpr;
973 BytesToMove = 0xFFFF-offset+1;
975 if ( gr_bitblt_double )
976 gr_linear_rep_movsd_2x( (void *)sbits, (void *)(offset+0xA0000), BytesToMove );
978 gr_linear_movsd( (void *)sbits, (void *)(offset+0xA0000), BytesToMove );
981 gr_vesa_setpage(page);
983 if ( gr_bitblt_double )
984 gr_linear_rep_movsd_2x( (void *)(sbits+BytesToMove/2), (void *)0xA0000, EndingOffset - 0xFFFF );
986 gr_linear_movsd( (void *)(sbits+BytesToMove), (void *)0xA0000, EndingOffset - 0xFFFF );
988 VideoLocation += dbpr;
997 void gr_bm_ubitblt02m(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
999 unsigned char * sbits;
1001 unsigned int offset, EndingOffset, VideoLocation;
1003 int sbpr, dbpr, y1, page, BytesToMove;
1005 sbpr = src->bm_rowsize;
1007 dbpr = dest->bm_rowsize << gr_bitblt_dest_step_shift;
1009 VideoLocation = (unsigned int)dest->bm_data + (dest->bm_rowsize * dy) + dx;
1011 sbits = src->bm_data + ( sbpr*sy ) + sx;
1013 for (y1=0; y1 < h; y1++ ) {
1015 page = VideoLocation >> 16;
1016 offset = VideoLocation & 0xFFFF;
1018 gr_vesa_setpage( page );
1020 EndingOffset = offset+w-1;
1022 if ( EndingOffset <= 0xFFFF )
1024 gr_linear_rep_movsdm( (void *)sbits, (void *)(offset+0xA0000), w );
1026 VideoLocation += dbpr;
1031 BytesToMove = 0xFFFF-offset+1;
1033 gr_linear_rep_movsdm( (void *)sbits, (void *)(offset+0xA0000), BytesToMove );
1036 gr_vesa_setpage(page);
1038 gr_linear_rep_movsdm( (void *)(sbits+BytesToMove), (void *)0xA0000, EndingOffset - 0xFFFF );
1040 VideoLocation += dbpr;
1047 // From SVGA to linear
1048 void gr_bm_ubitblt20(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
1050 unsigned char * dbits;
1052 unsigned int offset, offset1, offset2;
1054 int sbpr, dbpr, y1, page;
1056 dbpr = dest->bm_rowsize;
1058 sbpr = src->bm_rowsize;
1060 for (y1=0; y1 < h; y1++ ) {
1062 offset2 = (unsigned int)src->bm_data + (sbpr * (y1+sy)) + sx;
1063 dbits = dest->bm_data + (dbpr * (y1+dy)) + dx;
1065 page = offset2 >> 16;
1066 offset = offset2 & 0xFFFF;
1067 offset1 = offset+w-1;
1068 gr_vesa_setpage( page );
1070 if ( offset1 > 0xFFFF ) {
1071 // Overlaps two pages
1072 while( offset <= 0xFFFF )
1073 *dbits++ = gr_video_memory[offset++];
1074 offset1 -= (0xFFFF+1);
1077 gr_vesa_setpage(page);
1079 while( offset <= offset1 )
1080 *dbits++ = gr_video_memory[offset++];
1087 //@extern int Interlacing_on;
1089 // From Linear to Linear
1090 void gr_bm_ubitblt00(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
1092 unsigned char * dbits;
1093 unsigned char * sbits;
1094 //int src_bm_rowsize_2, dest_bm_rowsize_2;
1099 sbits = src->bm_data + (src->bm_rowsize * sy) + sx;
1100 dbits = dest->bm_data + (dest->bm_rowsize * dy) + dx;
1102 dstep = dest->bm_rowsize << gr_bitblt_dest_step_shift;
1104 // No interlacing, copy the whole buffer.
1105 for (i=0; i < h; i++ ) {
1106 if (gr_bitblt_double)
1107 gr_linear_rep_movsd_2x( sbits, dbits, w );
1109 gr_linear_movsd( sbits, dbits, w );
1110 sbits += src->bm_rowsize;
1114 // From Linear to Linear Masked
1115 void gr_bm_ubitblt00m(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
1117 unsigned char * dbits;
1118 unsigned char * sbits;
1119 //int src_bm_rowsize_2, dest_bm_rowsize_2;
1123 sbits = src->bm_data + (src->bm_rowsize * sy) + sx;
1124 dbits = dest->bm_data + (dest->bm_rowsize * dy) + dx;
1126 // No interlacing, copy the whole buffer.
1128 if (gr_bitblt_fade_table==NULL) {
1129 for (i=0; i < h; i++ ) {
1130 gr_linear_rep_movsdm( sbits, dbits, w );
1131 sbits += src->bm_rowsize;
1132 dbits += dest->bm_rowsize;
1135 for (i=0; i < h; i++ ) {
1136 gr_linear_rep_movsdm_faded( sbits, dbits, w, gr_bitblt_fade_table[dy+i] );
1137 sbits += src->bm_rowsize;
1138 dbits += dest->bm_rowsize;
1144 extern void gr_lbitblt( grs_bitmap * source, grs_bitmap * dest, int height, int width );
1148 //extern void BlitLargeAlign(ubyte *draw_buffer, int dstRowBytes, ubyte *dstPtr, int w, int h, int modulus);
1150 asm void BlitLargeAlign(ubyte *rSrcPtr, int rDblDStrd, ubyte *rDst1Ptr, int rWidth, int rHeight, int rModulus)
1152 stw r31,-4(SP) // store non-volatile reg in red zone
1153 addi r5,r5,-8 // subtract 8 from dst
1154 stw r30,-8(SP) // store non-volatile reg in red zone
1156 la r30,-16(SP) // calculate copy of local 8-byte variable
1158 // rSStrd = modulus - w
1159 add r31,r5,r4 // dst2 = dstRowBytes + dst1
1160 sub r4,r4,r6 // r4 = dstRowBytes - w
1161 addi r7,r7,-1 // subtract 1 from height count
1162 srawi r6,r6,2 // rWidth = w >> 2
1163 addi r3,r3,-4 // subtract 4 from src
1164 addi r6,r6,-1 // subtract 1 from width count
1165 add r4,r4,r4 // rDblDStrd = 2 * r4
1167 BlitLargeAlignY: // y count is in r7
1168 lwzu r10,4(r3) // load a long into r10
1169 mr r0,r10 // put a copy in r0
1171 // these are simplified -- can't use 'em inslwi r0,r10,16,8
1172 // these are simplified -- can't use 'em insrwi r11,r10,16,8
1173 rlwimi r0,r10,24,8,31
1174 rlwimi r11,r10,8,8,23
1175 rlwimi r0,r10,16,24,31
1177 rlwimi r11,r10,16,0,7
1179 mtctr r6 // copy x count into the counter
1183 lwzu r10,4(r3) // load a long into r10
1185 mr r0,r10 // put a copy in r0
1187 // simplefied inslwi r0,r10,16,8
1188 // simplefied insrwi r11,r10,16,8
1189 rlwimi r0,r10,24,8,31
1190 rlwimi r11,r10,8,8,23
1191 rlwimi r0,r10,16,24,31
1193 rlwimi r11,r10,16,0,7
1197 bdnz BlitLargeAlignX // loop over all x
1200 addic. r7,r7,-1 // decrement the counter
1208 bne BlitLargeAlignY // loop for all y
1210 lwz r30,-8(SP) // restore non-volatile regs
1211 lwz r31,-4(SP) // restore non-volatile regs
1212 blr // return to caller
1215 #endif /* MACINTOSH */
1218 // Clipped bitmap ...
1220 void gr_bitmap( int x, int y, grs_bitmap *bm )
1222 int dx1=x, dx2=x+bm->bm_w-1;
1223 int dy1=y, dy2=y+bm->bm_h-1;
1226 if ((dx1 >= grd_curcanv->cv_bitmap.bm_w ) || (dx2 < 0)) return;
1227 if ((dy1 >= grd_curcanv->cv_bitmap.bm_h) || (dy2 < 0)) return;
1228 if ( dx1 < 0 ) { sx = -dx1; dx1 = 0; }
1229 if ( dy1 < 0 ) { sy = -dy1; dy1 = 0; }
1230 if ( dx2 >= grd_curcanv->cv_bitmap.bm_w ) { dx2 = grd_curcanv->cv_bitmap.bm_w-1; }
1231 if ( dy2 >= grd_curcanv->cv_bitmap.bm_h ) { dy2 = grd_curcanv->cv_bitmap.bm_h-1; }
1233 // Draw bitmap bm[x,y] into (dx1,dy1)-(dx2,dy2)
1235 gr_bm_ubitblt(dx2-dx1+1,dy2-dy1+1, dx1, dy1, sx, sy, bm, &grd_curcanv->cv_bitmap );
1239 //-NOT-used // From linear to SVGA
1240 //-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)
1242 //-NOT-used unsigned char * sbits;
1244 //-NOT-used unsigned int offset, EndingOffset, VideoLocation;
1246 //-NOT-used int sbpr, dbpr, y1, page, BytesToMove;
1248 //-NOT-used sbpr = src->bm_rowsize;
1250 //-NOT-used dbpr = dest->bm_rowsize << gr_bitblt_dest_step_shift;
1252 //-NOT-used VideoLocation = (unsigned int)dest->bm_data + (dest->bm_rowsize * dy) + dx;
1254 //-NOT-used sbits = src->bm_data + ( sbpr*sy ) + sx;
1256 //-NOT-used for (y1=0; y1 < h; y1++ ) {
1258 //-NOT-used page = VideoLocation >> 16;
1259 //-NOT-used offset = VideoLocation & 0xFFFF;
1261 //-NOT-used gr_vesa_setpage( page );
1263 //-NOT-used EndingOffset = offset+w-1;
1265 //-NOT-used if ( EndingOffset <= 0xFFFF )
1267 //-NOT-used gr_linear_rep_movsd_2x( (void *)sbits, (void *)(offset+0xA0000), w );
1269 //-NOT-used VideoLocation += dbpr;
1270 //-NOT-used sbits += sbpr;
1274 //-NOT-used BytesToMove = 0xFFFF-offset+1;
1276 //-NOT-used gr_linear_rep_movsd_2x( (void *)sbits, (void *)(offset+0xA0000), BytesToMove );
1279 //-NOT-used gr_vesa_setpage(page);
1281 //-NOT-used gr_linear_rep_movsd_2x( (void *)(sbits+BytesToMove/2), (void *)0xA0000, EndingOffset - 0xFFFF );
1283 //-NOT-used VideoLocation += dbpr;
1284 //-NOT-used sbits += sbpr;
1292 //-NOT-used // From Linear to Linear
1293 //-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)
1295 //-NOT-used unsigned char * dbits;
1296 //-NOT-used unsigned char * sbits;
1297 //-NOT-used //int src_bm_rowsize_2, dest_bm_rowsize_2;
1301 //-NOT-used sbits = src->bm_data + (src->bm_rowsize * sy) + sx;
1302 //-NOT-used dbits = dest->bm_data + (dest->bm_rowsize * dy) + dx;
1304 //-NOT-used // No interlacing, copy the whole buffer.
1305 //-NOT-used for (i=0; i < h; i++ ) {
1306 //-NOT-used gr_linear_rep_movsd_2x( sbits, dbits, w );
1308 //-NOT-used sbits += src->bm_rowsize;
1309 //-NOT-used dbits += dest->bm_rowsize << gr_bitblt_dest_step_shift;
1313 void gr_bm_ubitblt00_rle(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
1315 unsigned char * dbits;
1316 unsigned char * sbits;
1320 if (src->bm_flags & BM_FLAG_RLE_BIG)
1323 sbits = &src->bm_data[4 + (src->bm_h*data_offset)];
1325 for (i=0; i<sy; i++ )
1326 sbits += (int)(INTEL_SHORT(src->bm_data[4+(i*data_offset)]));
1328 dbits = dest->bm_data + (dest->bm_rowsize * dy) + dx;
1330 // No interlacing, copy the whole buffer.
1331 for (i=0; i < h; i++ ) {
1332 gr_rle_expand_scanline( dbits, sbits, sx, sx+w-1 );
1333 if ( src->bm_flags & BM_FLAG_RLE_BIG )
1334 sbits += (int)INTEL_SHORT(*((short *)&(src->bm_data[4+((i+sy)*data_offset)])));
1336 sbits += (int)(src->bm_data[4+i+sy]);
1337 dbits += dest->bm_rowsize << gr_bitblt_dest_step_shift;
1341 void gr_bm_ubitblt00m_rle(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
1343 unsigned char * dbits;
1344 unsigned char * sbits;
1348 if (src->bm_flags & BM_FLAG_RLE_BIG)
1351 sbits = &src->bm_data[4 + (src->bm_h*data_offset)];
1352 for (i=0; i<sy; i++ )
1353 sbits += (int)(INTEL_SHORT(src->bm_data[4+(i*data_offset)]));
1355 dbits = dest->bm_data + (dest->bm_rowsize * dy) + dx;
1357 // No interlacing, copy the whole buffer.
1358 for (i=0; i < h; i++ ) {
1359 gr_rle_expand_scanline_masked( dbits, sbits, sx, sx+w-1 );
1360 if ( src->bm_flags & BM_FLAG_RLE_BIG )
1361 sbits += (int)INTEL_SHORT(*((short *)&(src->bm_data[4+((i+sy)*data_offset)])));
1363 sbits += (int)(src->bm_data[4+i+sy]);
1364 dbits += dest->bm_rowsize << gr_bitblt_dest_step_shift;
1370 extern void gr_rle_expand_scanline_generic( grs_bitmap * dest, int dx, int dy, ubyte *src, int x1, int x2 );
1371 extern void gr_rle_expand_scanline_generic_masked( grs_bitmap * dest, int dx, int dy, ubyte *src, int x1, int x2 );
1372 extern void gr_rle_expand_scanline_svga_masked( grs_bitmap * dest, int dx, int dy, ubyte *src, int x1, int x2 );
1374 void gr_bm_ubitblt0x_rle(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
1378 unsigned char * sbits;
1380 //mprintf( 0, "SVGA RLE!\n" );
1383 if (src->bm_flags & BM_FLAG_RLE_BIG)
1386 sbits = &src->bm_data[4 + (src->bm_h*data_offset)];
1387 for (i=0; i<sy; i++ )
1388 sbits += (int)(INTEL_SHORT(src->bm_data[4+(i*data_offset)]));
1390 for (y1=0; y1 < h; y1++ ) {
1391 gr_rle_expand_scanline_generic( dest, dx, dy+y1, sbits, sx, sx+w-1 );
1392 if ( src->bm_flags & BM_FLAG_RLE_BIG )
1393 sbits += (int)INTEL_SHORT(*((short *)&(src->bm_data[4+((y1+sy)*data_offset)])));
1395 sbits += (int)src->bm_data[4+y1+sy];
1400 void gr_bm_ubitblt0xm_rle(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
1404 unsigned char * sbits;
1406 //mprintf( 0, "SVGA RLE!\n" );
1409 if (src->bm_flags & BM_FLAG_RLE_BIG)
1412 sbits = &src->bm_data[4 + (src->bm_h*data_offset)];
1413 for (i=0; i<sy; i++ )
1414 sbits += (int)(INTEL_SHORT(src->bm_data[4+(i*data_offset)]));
1416 for (y1=0; y1 < h; y1++ ) {
1417 gr_rle_expand_scanline_generic_masked( dest, dx, dy+y1, sbits, sx, sx+w-1 );
1418 if ( src->bm_flags & BM_FLAG_RLE_BIG )
1419 sbits += (int)INTEL_SHORT(*((short *)&(src->bm_data[4+((y1+sy)*data_offset)])));
1421 sbits += (int)src->bm_data[4+y1+sy];
1427 void gr_bm_ubitblt02m_rle(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
1431 unsigned char * sbits;
1433 //mprintf( 0, "SVGA RLE!\n" );
1436 if (src->bm_flags & BM_FLAG_RLE_BIG)
1439 sbits = &src->bm_data[4 + (src->bm_h*data_offset)];
1440 for (i=0; i<sy; i++ )
1441 sbits += (int)(INTEL_SHORT(src->bm_data[4+(i*data_offset)]));
1443 for (y1=0; y1 < h; y1++ ) {
1444 gr_rle_expand_scanline_svga_masked( dest, dx, dy+y1, sbits, sx, sx+w-1 );
1445 if ( src->bm_flags & BM_FLAG_RLE_BIG )
1446 sbits += (int)INTEL_SHORT(*((short *)&(src->bm_data[4+((y1+sy)*data_offset)])));
1448 sbits += (int)src->bm_data[4+y1+sy];
1453 void gr_bm_ubitblt(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
1455 register int x1, y1;
1457 if ( (src->bm_type == BM_LINEAR) && (dest->bm_type == BM_LINEAR ))
1459 if ( src->bm_flags & BM_FLAG_RLE )
1460 gr_bm_ubitblt00_rle( w, h, dx, dy, sx, sy, src, dest );
1462 gr_bm_ubitblt00( w, h, dx, dy, sx, sy, src, dest );
1467 if ( (src->bm_type == BM_LINEAR) && (dest->bm_type == BM_OGL ))
1469 ogl_ubitblt(w, h, dx, dy, sx, sy, src, dest);
1472 if ( (src->bm_type == BM_OGL) && (dest->bm_type == BM_LINEAR ))
1474 ogl_ubitblt_tolinear(w, h, dx, dy, sx, sy, src, dest);
1477 if ( (src->bm_type == BM_OGL) && (dest->bm_type == BM_OGL ))
1479 ogl_ubitblt_copy(w, h, dx, dy, sx, sy, src, dest);
1484 if ( (src->bm_flags & BM_FLAG_RLE ) && (src->bm_type == BM_LINEAR) ) {
1485 gr_bm_ubitblt0x_rle(w, h, dx, dy, sx, sy, src, dest );
1490 if ( (src->bm_type == BM_LINEAR) && (dest->bm_type == BM_SVGA ))
1492 gr_bm_ubitblt02( w, h, dx, dy, sx, sy, src, dest );
1496 if ( (src->bm_type == BM_SVGA) && (dest->bm_type == BM_LINEAR ))
1498 gr_bm_ubitblt20( w, h, dx, dy, sx, sy, src, dest );
1502 if ( (src->bm_type == BM_LINEAR) && (dest->bm_type == BM_MODEX ))
1504 gr_bm_ubitblt01( w, h, dx+XOFFSET, dy+YOFFSET, sx, sy, src, dest );
1509 for (y1=0; y1 < h; y1++ ) {
1510 for (x1=0; x1 < w; x1++ ) {
1511 gr_bm_pixel( dest, dx+x1, dy+y1, gr_gpixel(src,sx+x1,sy+y1) );
1516 void gr_bm_bitblt(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
1518 int dx1=dx, dx2=dx+dest->bm_w-1;
1519 int dy1=dy, dy2=dy+dest->bm_h-1;
1521 int sx1=sx, sx2=sx+src->bm_w-1;
1522 int sy1=sy, sy2=sy+src->bm_h-1;
1524 if ((dx1 >= dest->bm_w ) || (dx2 < 0)) return;
1525 if ((dy1 >= dest->bm_h ) || (dy2 < 0)) return;
1526 if ( dx1 < 0 ) { sx1 += -dx1; dx1 = 0; }
1527 if ( dy1 < 0 ) { sy1 += -dy1; dy1 = 0; }
1528 if ( dx2 >= dest->bm_w ) { dx2 = dest->bm_w-1; }
1529 if ( dy2 >= dest->bm_h ) { dy2 = dest->bm_h-1; }
1531 if ((sx1 >= src->bm_w ) || (sx2 < 0)) return;
1532 if ((sy1 >= src->bm_h ) || (sy2 < 0)) return;
1533 if ( sx1 < 0 ) { dx1 += -sx1; sx1 = 0; }
1534 if ( sy1 < 0 ) { dy1 += -sy1; sy1 = 0; }
1535 if ( sx2 >= src->bm_w ) { sx2 = src->bm_w-1; }
1536 if ( sy2 >= src->bm_h ) { sy2 = src->bm_h-1; }
1538 // Draw bitmap bm[x,y] into (dx1,dy1)-(dx2,dy2)
1539 if ( dx2-dx1+1 < w )
1541 if ( dy2-dy1+1 < h )
1543 if ( sx2-sx1+1 < w )
1545 if ( sy2-sy1+1 < h )
1548 gr_bm_ubitblt(w,h, dx1, dy1, sx1, sy1, src, dest );
1551 void gr_ubitmap( int x, int y, grs_bitmap *bm )
1555 source = bm->bm_type;
1558 if (source==BM_LINEAR) {
1562 if ( bm->bm_flags & BM_FLAG_RLE )
1563 gr_bm_ubitblt00_rle(bm->bm_w, bm->bm_h, x, y, 0, 0, bm, &grd_curcanv->cv_bitmap );
1565 gr_ubitmap00( x, y, bm );
1569 ogl_ubitmapm(x,y,bm);
1574 if ( bm->bm_flags & BM_FLAG_RLE )
1575 gr_bm_ubitblt0x_rle(bm->bm_w, bm->bm_h, x, y, 0, 0, bm, &grd_curcanv->cv_bitmap );
1577 gr_vesa_bitmap( bm, &grd_curcanv->cv_bitmap, x, y );
1580 gr_bm_ubitblt01(bm->bm_w, bm->bm_h, x+XOFFSET, y+YOFFSET, 0, 0, bm, &grd_curcanv->cv_bitmap);
1584 gr_ubitmap012( x, y, bm );
1588 gr_ubitmapGENERIC(x, y, bm);
1593 void gr_ubitmapm( int x, int y, grs_bitmap *bm )
1597 source = bm->bm_type;
1600 Assert(x+bm->bm_w <= grd_curcanv->cv_w);
1602 Assert(y+bm->bm_h <= grd_curcanv->cv_h);
1605 if (source==BM_LINEAR) {
1609 if ( bm->bm_flags & BM_FLAG_RLE )
1610 gr_bm_ubitblt00m_rle(bm->bm_w, bm->bm_h, x, y, 0, 0, bm, &grd_curcanv->cv_bitmap );
1612 gr_ubitmap00m( x, y, bm );
1616 ogl_ubitmapm(x,y,bm);
1621 if (bm->bm_flags & BM_FLAG_RLE)
1622 gr_bm_ubitblt02m_rle(bm->bm_w, bm->bm_h, x, y, 0, 0, bm, &grd_curcanv->cv_bitmap);
1623 //gr_bm_ubitblt0xm_rle(bm->bm_w, bm->bm_h, x, y, 0, 0, bm, &grd_curcanv->cv_bitmap);
1625 gr_bm_ubitblt02m(bm->bm_w, bm->bm_h, x, y, 0, 0, bm, &grd_curcanv->cv_bitmap);
1626 //gr_ubitmapGENERICm(x, y, bm);
1629 gr_bm_ubitblt01m(bm->bm_w, bm->bm_h, x+XOFFSET, y+YOFFSET, 0, 0, bm, &grd_curcanv->cv_bitmap);
1634 gr_ubitmap012m( x, y, bm );
1638 gr_ubitmapGENERICm(x, y, bm);
1643 void gr_bitmapm( int x, int y, grs_bitmap *bm )
1645 int dx1=x, dx2=x+bm->bm_w-1;
1646 int dy1=y, dy2=y+bm->bm_h-1;
1649 if ((dx1 >= grd_curcanv->cv_bitmap.bm_w ) || (dx2 < 0)) return;
1650 if ((dy1 >= grd_curcanv->cv_bitmap.bm_h) || (dy2 < 0)) return;
1651 if ( dx1 < 0 ) { sx = -dx1; dx1 = 0; }
1652 if ( dy1 < 0 ) { sy = -dy1; dy1 = 0; }
1653 if ( dx2 >= grd_curcanv->cv_bitmap.bm_w ) { dx2 = grd_curcanv->cv_bitmap.bm_w-1; }
1654 if ( dy2 >= grd_curcanv->cv_bitmap.bm_h ) { dy2 = grd_curcanv->cv_bitmap.bm_h-1; }
1656 // Draw bitmap bm[x,y] into (dx1,dy1)-(dx2,dy2)
1658 if ( (bm->bm_type == BM_LINEAR) && (grd_curcanv->cv_bitmap.bm_type == BM_LINEAR ))
1660 if ( bm->bm_flags & BM_FLAG_RLE )
1661 gr_bm_ubitblt00m_rle(dx2-dx1+1,dy2-dy1+1, dx1, dy1, sx, sy, bm, &grd_curcanv->cv_bitmap );
1663 gr_bm_ubitblt00m(dx2-dx1+1,dy2-dy1+1, dx1, dy1, sx, sy, bm, &grd_curcanv->cv_bitmap );
1667 else if ( (bm->bm_type == BM_LINEAR) && (grd_curcanv->cv_bitmap.bm_type == BM_SVGA ))
1669 gr_bm_ubitblt02m(dx2-dx1+1,dy2-dy1+1, dx1, dy1, sx, sy, bm, &grd_curcanv->cv_bitmap );
1674 gr_bm_ubitbltm(dx2-dx1+1,dy2-dy1+1, dx1, dy1, sx, sy, bm, &grd_curcanv->cv_bitmap );
1678 void gr_bm_ubitbltm(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
1680 register int x1, y1;
1684 if ( (src->bm_type == BM_LINEAR) && (dest->bm_type == BM_OGL ))
1686 ogl_ubitblt(w, h, dx, dy, sx, sy, src, dest);
1689 if ( (src->bm_type == BM_OGL) && (dest->bm_type == BM_LINEAR ))
1691 ogl_ubitblt_tolinear(w, h, dx, dy, sx, sy, src, dest);
1694 if ( (src->bm_type == BM_OGL) && (dest->bm_type == BM_OGL ))
1696 ogl_ubitblt_copy(w, h, dx, dy, sx, sy, src, dest);
1701 for (y1=0; y1 < h; y1++ ) {
1702 for (x1=0; x1 < w; x1++ ) {
1703 if ((c=gr_gpixel(src,sx+x1,sy+y1))!=TRANSPARENCY_COLOR)
1704 gr_bm_pixel( dest, dx+x1, dy+y1,c );
1710 // rescalling bitmaps, 10/14/99 Jan Bobrowski jb@wizard.ae.krakow.pl
1712 static inline void scale_line(unsigned char *in, unsigned char *out, int ilen, int olen)
1714 int a = olen/ilen, b = olen%ilen;
1716 unsigned char *end = out + olen;
1732 void gr_bitmap_scale_to(grs_bitmap *src, grs_bitmap *dst)
1734 unsigned char *s = src->bm_data;
1735 unsigned char *d = dst->bm_data;
1737 int a = dst->bm_h/h, b = dst->bm_h%h;
1740 if ( src->bm_flags & BM_FLAG_RLE ) {
1741 src = rle_expand_texture(src);
1744 for(y=0; y<h; y++) {
1753 scale_line(s, d, src->bm_w, dst->bm_w);
1754 d += dst->bm_rowsize;
1756 s += src->bm_rowsize;
1760 void show_fullscr(grs_bitmap *bm)
1762 grs_bitmap * const scr = &grd_curcanv->cv_bitmap;
1765 if(bm->bm_type == BM_LINEAR && scr->bm_type == BM_OGL) {
1766 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
1770 if(scr->bm_type != BM_LINEAR) {
1771 grs_bitmap *tmp = gr_create_bitmap(scr->bm_w, scr->bm_h);
1772 gr_bitmap_scale_to(bm, tmp);
1773 gr_bitmap(0, 0, tmp);
1774 gr_free_bitmap(tmp);
1777 gr_bitmap_scale_to(bm, scr);