From c91df4c1534e2db2274b6d08e90470bf21a49e2a Mon Sep 17 00:00:00 2001 From: José Fonseca Date: Tue, 2 Jun 2009 11:46:06 -0700 Subject: util: Fix 24 to 32 bit expansion binary arithmetic expression. When approaching y = x * 0xffffffff / 0xffffff with bit arithmetic, the 8 least significant bits of y should come from the 8 most significant bits of x. --- src/gallium/auxiliary/util/u_tile.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/gallium/auxiliary/util') diff --git a/src/gallium/auxiliary/util/u_tile.c b/src/gallium/auxiliary/util/u_tile.c index f0a5a339eb3..9becd9fea43 100644 --- a/src/gallium/auxiliary/util/u_tile.c +++ b/src/gallium/auxiliary/util/u_tile.c @@ -1126,7 +1126,7 @@ pipe_get_tile_z(struct pipe_transfer *pt, for (i = 0; i < h; i++) { for (j = 0; j < w; j++) { /* convert 24-bit Z to 32-bit Z */ - pDest[j] = (ptrc[j] << 8) | (ptrc[j] & 0xff); + pDest[j] = (ptrc[j] << 8) | ((ptrc[j] >> 16) & 0xff); } pDest += dstStride; ptrc += pt->stride/4; -- cgit v1.2.3