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Stop scaled bitmaps from disappearing completely when the top of the image is 

partially off-screen.  Hopefully this also fixes some system freezes caused by this
code when run under OS4.1 on the SAM440.

svn path=/trunk/netsurf/; revision=5455
This commit is contained in:
Chris Young 2008-09-28 14:39:02 +00:00
parent bc22f2e7d4
commit 946115fa76
1 changed files with 13 additions and 10 deletions
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23
amiga/plotters.c
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@ -239,6 +239,8 @@ bool ami_bitmap(int x, int y, int width, int height,
{
struct RenderInfo ri;
if(!width || !height) return true;
// ami_fill(x,y,x+width,y+height,bg);
SetRPAttrs(currp,RPTAG_BPenColor,p96EncodeColor(RGBFB_A8B8G8R8,bg),
@ -248,14 +250,13 @@ bool ami_bitmap(int x, int y, int width, int height,
ri.BytesPerRow = bitmap->width * 4;
ri.RGBFormat = RGBFB_R8G8B8A8;
/* check for black boxes under images! */
/* disabled temporarily for SAM OS4.1
if((bitmap->width != width) || (bitmap->height != height))
{
struct BitMap *tbm;
struct BitMap *tbm,*scaledbm;
struct RastPort trp;
struct BitScaleArgs bsa;
scaledbm = p96AllocBitMap(width,height,32,0,currp->BitMap,RGBFB_R8G8B8A8);
tbm = p96AllocBitMap(bitmap->width,bitmap->height,32,0,currp->BitMap,RGBFB_R8G8B8A8);
InitRastPort(&trp);
trp.BitMap = tbm;
@ -264,26 +265,28 @@ bool ami_bitmap(int x, int y, int width, int height,
bsa.bsa_SrcY = 0;
bsa.bsa_SrcWidth = bitmap->width;
bsa.bsa_SrcHeight = bitmap->height;
bsa.bsa_DestX = x;
bsa.bsa_DestY = y;
bsa.bsa_DestWidth = width;
bsa.bsa_DestHeight = height;
bsa.bsa_DestX = 0;
bsa.bsa_DestY = 0;
// bsa.bsa_DestWidth = width;
// bsa.bsa_DestHeight = height;
bsa.bsa_XSrcFactor = bitmap->width;
bsa.bsa_XDestFactor = width;
bsa.bsa_YSrcFactor = bitmap->height;
bsa.bsa_YDestFactor = height;
bsa.bsa_SrcBitMap = tbm;
bsa.bsa_DestBitMap = currp->BitMap;
bsa.bsa_DestBitMap = scaledbm;
bsa.bsa_Flags = 0;
BitMapScale(&bsa);
BltBitMapRastPort(scaledbm,0,0,currp,x,y,width,height,0x0C0);
p96FreeBitMap(tbm);
p96FreeBitMap(scaledbm);
}
else
{
*/
p96WritePixelArray((struct RenderInfo *)&ri,0,0,currp,x,y,width,height);
// }
}
return true;
}