From: Brian Paul <brianp@vmware.com>
Date: Mon, 30 Nov 2009 16:21:49 +0000 (-0700)
Subject: softpipe: setup machine->Face without a conditional
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=e0399fddf2efd556ece8b81078368e6ab388c3b7;p=mesa.git

softpipe: setup machine->Face without a conditional
---

diff --git a/src/gallium/drivers/softpipe/sp_fs_exec.c b/src/gallium/drivers/softpipe/sp_fs_exec.c
index a8999ed3479..27fa126b7c3 100644
--- a/src/gallium/drivers/softpipe/sp_fs_exec.c
+++ b/src/gallium/drivers/softpipe/sp_fs_exec.c
@@ -127,11 +127,8 @@ exec_run( const struct sp_fragment_shader *base,
                     (float)quad->input.x0, (float)quad->input.y0, 
                     &machine->QuadPos);
 
-   if (quad->input.facing) {
-      machine->Face = -1.0f;
-   } else {
-      machine->Face = 1.0f;
-   }
+   /* convert 0 to 1.0 and 1 to -1.0 */
+   machine->Face = (float) (quad->input.facing * -2 + 1);
 
    quad->inout.mask &= tgsi_exec_machine_run( machine );
    if (quad->inout.mask == 0)