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attempt blit through mask

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This commit is contained in:
Chris Young 2012-08-05 15:55:02 +01:00
parent 74e794d7a2
commit 803970589b
1 changed files with 42 additions and 15 deletions
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37
amiga/plotters.c
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@ -51,6 +51,7 @@ struct bfbitmap {
ULONG height;
int offsetx;
int offsety;
APTR mask;
};
bool palette_mapped = false;
@ -651,6 +652,18 @@ static bool ami_bitmap(int x, int y, int width, int height, struct bitmap *bitma
}
else
{
ULONG tag, tag_data, minterm;
if(palette_mapped == false) {
tag = BLITA_UseSrcAlpha;
tag_data = !bitmap->opaque;
minterm = 0xc0;
} else {
tag = BLITA_MaskPlane;
tag_data = (ULONG)bitmap->native_mask;
minterm = (ABC|ABNC|ANBC);
}
BltBitMapTags(BLITA_Width,width,
BLITA_Height,height,
BLITA_Source,tbm,
@ -659,8 +672,8 @@ static bool ami_bitmap(int x, int y, int width, int height, struct bitmap *bitma
BLITA_DestY,y,
BLITA_SrcType,BLITT_BITMAP,
BLITA_DestType,BLITT_RASTPORT,
// BLITA_Mask,0xFF,
BLITA_UseSrcAlpha,!bitmap->opaque,
BLITA_Minterm, minterm,
tag, tag_data,
TAG_DONE);
}
@ -691,7 +704,7 @@ 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);
if(palette_mapped == true) return true; // stop trailling into tiled mode for now
/* 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;
@ -756,6 +769,7 @@ if(palette_mapped == true) return true; // stop trailling into tiled mode for no
bfbm.height = height;
bfbm.offsetx = ox;
bfbm.offsety = oy;
bfbm.mask = bitmap->native_mask;
bfh = AllocVec(sizeof(struct Hook),MEMF_CLEAR);
bfh->h_Entry = (HOOKFUNC)ami_bitmap_tile_hook;
bfh->h_SubEntry = 0;
@ -787,7 +801,7 @@ static void ami_bitmap_tile_hook(struct Hook *hook,struct RastPort *rp,struct Ba
for (xf = -bfbm->offsetx; xf < bfmsg->Bounds.MaxX; xf += bfbm->width) {
for (yf = -bfbm->offsety; yf < bfmsg->Bounds.MaxY; yf += bfbm->height) {
if(GfxBase->LibNode.lib_Version >= 53) // AutoDoc says v52, but this function isn't in OS4.0, so checking for v53 (OS4.1)
if((GfxBase->LibNode.lib_Version >= 53) && (palette_mapped == false))
{
CompositeTags(COMPOSITE_Src_Over_Dest,bfbm->bm, rp->BitMap,
COMPTAG_Flags,COMPFLAG_IgnoreDestAlpha,
@ -803,6 +817,18 @@ static void ami_bitmap_tile_hook(struct Hook *hook,struct RastPort *rp,struct Ba
}
else
{
ULONG tag, tag_data, minterm;
if(palette_mapped == false) {
tag = BLITA_UseSrcAlpha;
tag_data = TRUE;
minterm = 0xc0;
} else {
tag = BLITA_MaskPlane;
tag_data = (ULONG)bfbm->mask;
minterm = (ABC|ABNC|ANBC);
}
BltBitMapTags(BLITA_Width, bfbm->width,
BLITA_Height, bfbm->height,
BLITA_Source, bfbm->bm,
@ -811,7 +837,8 @@ static void ami_bitmap_tile_hook(struct Hook *hook,struct RastPort *rp,struct Ba
BLITA_DestY, yf,
BLITA_SrcType, BLITT_BITMAP,
BLITA_DestType, BLITT_RASTPORT,
BLITA_UseSrcAlpha,TRUE,
BLITA_Minterm, minterm,
tag, tag_data,
TAG_DONE);
}
}