Mesa (softpipe-opt): softpipe: slightly optimized tiling calculation

[Keith Whitwell]

Module: Mesa
Branch: softpipe-opt
Commit: 1fd40e506c2207664f0c3f435e4614472ea4c540
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=1fd40e506c2207664f0c3f435e4614472ea4c540

Author: Keith Whitwell <keithw at vmware.com>
Date:   Thu Aug 20 18:12:44 2009 +0100

softpipe: slightly optimized tiling calculation

---

 src/gallium/drivers/softpipe/sp_tex_sample.c |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/gallium/drivers/softpipe/sp_tex_sample.c b/src/gallium/drivers/softpipe/sp_tex_sample.c
index 24f3311..90371d6 100644
--- a/src/gallium/drivers/softpipe/sp_tex_sample.c
+++ b/src/gallium/drivers/softpipe/sp_tex_sample.c
@@ -893,9 +893,8 @@ sp_get_samples_2d_linear_repeat_POT(struct tgsi_sampler *tgsi_sampler,
    unsigned level = samp->level;
    unsigned xpot = 1 << (samp->xpot - level);
    unsigned ypot = 1 << (samp->ypot - level);
-
-   unsigned xmax = MIN2(TILE_SIZE, xpot) - 1;
-   unsigned ymax = MIN2(TILE_SIZE, ypot) - 1;
+   unsigned xmax = (xpot - 1) & (TILE_SIZE - 1); /* MIN2(TILE_SIZE, xpot) - 1; */
+   unsigned ymax = (ypot - 1) & (TILE_SIZE - 1); /* MIN2(TILE_SIZE, ypot) - 1; */
       
    for (j = 0; j < QUAD_SIZE; j++) {
       int c;