From: Andre Maasikas <amaasikas@gmail.com>
Date: Wed, 1 Sep 2010 07:38:07 +0000 (+0300)
Subject: r600: fix rsq from negative input
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=9d0d78ad3f1f906c99dae593e9ebc0c52496ffe1;p=mesa.git

r600: fix rsq from negative input

arbfp specifies rsq of abs value
---

diff --git a/src/mesa/drivers/dri/r600/r700_assembler.c b/src/mesa/drivers/dri/r600/r700_assembler.c
index 45ff9c06249..6a9bd85247e 100644
--- a/src/mesa/drivers/dri/r600/r700_assembler.c
+++ b/src/mesa/drivers/dri/r600/r700_assembler.c
@@ -3189,6 +3189,9 @@ GLboolean assemble_math_function(r700_AssemblerBase* pAsm, BITS opcode)
         return GL_FALSE;
     }
 
+    if( pAsm->pILInst[pAsm->uiCurInst].Opcode == OPCODE_RSQ )
+        pAsm->S[0].src.abs = 1;
+
     if ( GL_FALSE == next_ins(pAsm) ) 
     {
         return GL_FALSE;