i965: keep SecHalf flag after register coalescing

Copy sechalf to the new register, otherwise we would read wrong HW registers.

Signed-off-by: Chia-I Wu <olv@lunarg.com>
Reviewed-by: Eric Anholt <eric@anholt.net>

diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
index 48ee1499d7d7fb08d8405a7234b03ff3326b19c5..02383363d43cda5820de95b0ca7844bec999664b 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -2233,6 +2233,7 @@ fs_visitor::register_coalesce()
                   new_src.abs = 1;
                }
               new_src.negate ^= scan_inst->src[i].negate;
+              new_src.sechalf = scan_inst->src[i].sechalf;
               scan_inst->src[i] = new_src;
            }
         }