diff options
Diffstat (limited to 'xorg-server/fb/fbblt.c')
| -rw-r--r-- | xorg-server/fb/fbblt.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/xorg-server/fb/fbblt.c b/xorg-server/fb/fbblt.c index a0402986c..680940467 100644 --- a/xorg-server/fb/fbblt.c +++ b/xorg-server/fb/fbblt.c @@ -65,6 +65,7 @@ fbBlt (FbBits *srcLine, int n, nmiddle; Bool destInvarient; int startbyte, endbyte; + int careful; FbDeclareMergeRop (); if (bpp == 24 && !FbCheck24Pix (pm)) @@ -74,12 +75,16 @@ fbBlt (FbBits *srcLine, return; } - 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; CARD8 *dst = (CARD8 *) dstLine; - + srcStride *= sizeof(FbBits); dstStride *= sizeof(FbBits); width >>= 3; |