diff options
| author | Aaron Plattner <aplattner@nvidia.com> | 2007-06-27 10:16:40 -0700 |
|---|---|---|
| committer | Aaron Plattner <aplattner@nvidia.com> | 2007-06-27 10:16:40 -0700 |
| commit | 1e189ed1daab58c1de67d387306fde0a9e7984a4 (patch) | |
| tree | 389b45df59fde3ab014cb52dbde9288eff36e5b7 /fb/fbtile.c | |
| parent | bf1ad1aa4270dccf1540943d97e80b317c0adb56 (diff) | |
Handle tileStride > 1 in fbEvenTile.
Patch courtesy of James Jones.
Diffstat (limited to 'fb/fbtile.c')
| -rw-r--r-- | fb/fbtile.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/fb/fbtile.c b/fb/fbtile.c index e7df1af5a..a9ffa9794 100644 --- a/fb/fbtile.c +++ b/fb/fbtile.c @@ -42,6 +42,7 @@ fbEvenTile (FbBits *dst, int height, FbBits *tile, + FbStride tileStride, int tileHeight, int alu, @@ -68,9 +69,9 @@ 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 +81,9 @@ 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 +196,7 @@ 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, |