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16 * Prototypes for the ibitblt functions.
23 // Finds location/size of the largest "hole" in bitmap mask_bmp
24 void gr_ibitblt_find_hole_size ( grs_bitmap * mask_bmp, int *minx, int *miny, int *maxx, int *maxy );
26 // Creates a code mask that will copy data from a bitmap that is sw by
27 // sh starting from location sx, sy with a rowsize of srowsize onto
28 // another bitmap but only copies into pixel locations that are
29 // defined as transparent in bitmap bmp.
32 ubyte * gr_ibitblt_create_mask(grs_bitmap *mask_bmp, int sx, int sy, int sw, int sh, int srowsize);
33 ubyte * gr_ibitblt_create_mask_svga(grs_bitmap *mask_bmp, int sx, int sy, int sw, int sh, int srowsize);
34 ubyte * gr_ibitblt_create_mask_pa( grs_bitmap *mask_bmp, int sx, int sy, int sw, int sh, int srowsize);
36 void gr_ibitblt_create_mask_pa(grs_bitmap *mask_bmp, int sx, int sy, int sw, int sh, int srowsize);
37 void gr_ibitblt_create_mask(grs_bitmap *mask_bmp, int sx, int sy, int sw, int sh, int srowsize);
40 // Copy source bitmap onto destination bitmap, not copying pixels that
41 // are defined transparent by the mask
44 void gr_ibitblt(grs_bitmap *source_bmp, grs_bitmap *dest_bmp, ubyte *mask);
46 void gr_ibitblt(grs_bitmap *source_bmp, grs_bitmap *dest_bmp);