diff options
| -rw-r--r-- | nx-X11/programs/Xserver/fb/fbblt.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/nx-X11/programs/Xserver/fb/fbblt.c b/nx-X11/programs/Xserver/fb/fbblt.c index e820a85eb..acec23bf2 100644 --- a/nx-X11/programs/Xserver/fb/fbblt.c +++ b/nx-X11/programs/Xserver/fb/fbblt.c @@ -67,6 +67,7 @@ fbBlt (FbBits *srcLine, int n, nmiddle; Bool destInvarient; int startbyte, endbyte; + int careful; FbDeclareMergeRop (); #ifdef FB_24BIT @@ -78,7 +79,11 @@ fbBlt (FbBits *srcLine, } #endif - if (alu == GXcopy && pm == FB_ALLONES && !reverse && + careful = !((srcLine < dstLine && srcLine + width * (bpp>>3) > dstLine) || + (dstLine < srcLine && dstLine + width * (bpp>>3) > srcLine)) || + (bpp & 7); + + if (alu == GXcopy && pm == FB_ALLONES && !careful && !(srcX & 7) && !(dstX & 7) && !(width & 7)) { int i; CARD8 *src = (CARD8 *) srcLine; |