Docs » Autodocs » graphics.library » BltMaskBitMapRastPort
BltMaskBitMapRastPort -- blit from source bitmap to destination rastport
with masking of source image.
BltMaskBitMapRastPort
(srcbm, srcx, srcy, destrp, destX, destY, sizeX, sizeY,
A0 D0 D1 A1 D2 D3 D4 D5
minterm, bltmask)
D6 A2
void BltMaskBitMapRastPort
(struct BitMap *, WORD, WORD, struct RastPort *, WORD, WORD,
WORD, WORD, UBYTE, APTR);
Blits from source bitmap to position specified in destination rastport
using bltmask to determine where source overlays destination, and
minterm to determine whether to copy the source image "as is" or
to "invert" the sense of the source image when copying. In either
case, blit only occurs where the mask is non-zero.
srcbm - a pointer to the source bitmap
srcx - x offset into source bitmap
srcy - y offset into source bitmap
destrp - a pointer to the destination rastport
destX - x offset into dest rastport
destY - y offset into dest rastport
sizeX - width of blit in pixels
sizeY - height of blit in rows
minterm - either (ABC|ABNC|ANBC) if copy source and blit thru mask
or (ANBC) if invert source and blit thru mask
bltmask - pointer to the single bit-plane mask, which must be the
same size and dimensions as the planes of the
source bitmap.
BltBitMapRastPort(), <graphics/gfx.h>, <graphics/rastport.h>
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