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Reinstate the old (non-backfill) bitmap tiler for OS3

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This commit is contained in:
Chris Young 2015-02-03 00:24:03 +00:00
parent a7b866e824
commit 32cd4abfd5
1 changed files with 35 additions and 5 deletions
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40
amiga/plotters.c
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@ -583,14 +583,14 @@ static bool ami_bitmap_tile(int x, int y, int width, int height,
if(!(repeat_x || repeat_y))
return ami_bitmap(x, y, width, height, bitmap);
#ifdef __amigaos4__
/* If it is a one pixel transparent image, we are wasting our time */
if((bitmap->opaque == false) && (bitmap->width == 1) && (bitmap->height == 1))
return true;
tbm = ami_bitmap_get_native(bitmap,width,height,glob->rp->BitMap);
if(!tbm) return true;
#ifdef __amigaos4__
ox = x;
oy = y;
@ -657,14 +657,44 @@ static bool ami_bitmap_tile(int x, int y, int width, int height,
InstallLayerHook(glob->rp->Layer,LAYERS_NOBACKFILL);
if(bitmap->opaque) DeleteBackFillHook(bfh);
else FreeVec(bfh);
#else
/* get left most tile position */
if (repeat_x)
for (; x > glob->rect.MinX; x -= width)
;
/* get top most tile position */
if (repeat_y)
for (; y > glob->rect.MinY; y -= height)
;
/* tile down and across to extents */
for (xf = x; xf < glob->rect.MaxX; xf += width) {
for (yf = y; yf < glob->rect.MaxY; yf += height) {
ULONG tag, tag_data = NULL, minterm = 0xc0;
if(bitmap->opaque) {
minterm = 0xc0;
} else {
if((tag_data = (ULONG)ami_bitmap_get_mask(bitmap, width, height, tbm)))
minterm = (ABC|ABNC|ANBC);
}
if(tag_data) {
BltMaskBitMapRastPort(tbm, 0, 0, glob->rp, x, y, width, height, minterm, tag_data);
} else {
BltBitMapRastPort(tbm, 0, 0, glob->rp, x, y, width, height, 0xc0);
}
}
}
#endif
if((bitmap->dto == NULL) && (tbm != bitmap->nativebm))
{
ami_rtg_freebitmap(tbm);
}
#else
#warning FIXME: bitmap tiling uses backfill hooks
#endif
return true;
}