From: Kenneth Graunke <kenneth@whitecape.org>
Date: Thu, 14 Oct 2010 18:39:09 +0000 (-0700)
Subject: i965: Use RNDZ for ir_unop_trunc in the new FS.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f541b685aaf404fa7c8142f51d91c2720d82f264;p=mesa.git

i965: Use RNDZ for ir_unop_trunc in the new FS.

The existing code used RNDD, which rounds down, rather than toward zero.
---

diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
index fc6f9920838..d46091c9e6e 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -869,7 +869,7 @@ fs_visitor::visit(ir_expression *ir)
       break;
 
    case ir_unop_trunc:
-      emit(fs_inst(BRW_OPCODE_RNDD, this->result, op[0]));
+      emit(fs_inst(BRW_OPCODE_RNDZ, this->result, op[0]));
       break;
    case ir_unop_ceil:
       op[0].negate = !op[0].negate;