Commit f019722c authored by Gerd Hoffmann's avatar Gerd Hoffmann
Browse files

cirrus: fix off-by-one in cirrus_bitblt_rop_bkwd_transp_*_16 



The switch from pointers to addresses (commit
026aeffc and
ffaf8577) added
a off-by-one bug to 16bit backward blits.  Fix.

Reported-by: default avatar李强 <liqiang6-s@360.cn>
Signed-off-by: default avatarGerd Hoffmann <kraxel@redhat.com>
Reviewed-by: default avatarLi Qiang <liqiang6-s@360.cn>
Message-id: 1489735296-19047-1-git-send-email-kraxel@redhat.com
parent 8bb93c6f

hw/display/cirrus_vga_rop.h

+1 −1
Original line number Diff line number Diff line
@@ -219,7 +219,7 @@ glue(glue(cirrus_bitblt_rop_bkwd_transp_, ROP_NAME),_16)(CirrusVGAState *s, 
    srcpitch += bltwidth;

    for (y = 0; y < bltheight; y++) {

        for (x = 0; x < bltwidth; x+=2) {

            ROP_OP_TR_16(s, dstaddr, cirrus_src16(s, srcaddr), transp);

            ROP_OP_TR_16(s, dstaddr - 1, cirrus_src16(s, srcaddr - 1), transp);

            dstaddr -= 2;

            srcaddr -= 2;

        }