diff options
Diffstat (limited to 'fb/fbtile.c')
| -rw-r--r-- | fb/fbtile.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/fb/fbtile.c b/fb/fbtile.c index e7df1af5a..05a27a17b 100644 --- a/fb/fbtile.c +++ b/fb/fbtile.c @@ -1,6 +1,4 @@ /* - * Id: fbtile.c,v 1.1 1999/11/02 03:54:45 keithp Exp $ - * * Copyright © 1998 Keith Packard * * Permission to use, copy, modify, distribute, and sell this software and its @@ -42,6 +40,7 @@ fbEvenTile (FbBits *dst, int height, FbBits *tile, + FbStride tileStride, int tileHeight, int alu, @@ -68,9 +67,9 @@ fbEvenTile (FbBits *dst, /* * Compute tile start scanline and rotation parameters */ - tileEnd = tile + tileHeight; + tileEnd = tile + tileHeight * tileStride; modulus (- yRot, tileHeight, tileY); - t = tile + tileY; + t = tile + tileY * tileStride; modulus (- xRot, FB_UNIT, tileX); rot = tileX; @@ -80,8 +79,9 @@ fbEvenTile (FbBits *dst, /* * Pick up bits for this scanline */ - bits = READ(t++); - if (t == tileEnd) t = tile; + bits = READ(t); + t += tileStride; + if (t >= tileEnd) t = tile; bits = FbRotLeft(bits,rot); and = fbAnd(alu,bits,pm); xor = fbXor(alu,bits,pm); @@ -194,7 +194,7 @@ fbTile (FbBits *dst, { if (FbEvenTile (tileWidth)) fbEvenTile (dst, dstStride, dstX, width, height, - tile, tileHeight, + tile, tileStride, tileHeight, alu, pm, xRot, yRot); else fbOddTile (dst, dstStride, dstX, width, height, |