Mesa (master): softpipe: setup machine->Face without a conditional
Brian Paul
brianp at kemper.freedesktop.org
Tue Dec 1 19:27:18 UTC 2009
Module: Mesa
Branch: master
Commit: e0399fddf2efd556ece8b81078368e6ab388c3b7
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=e0399fddf2efd556ece8b81078368e6ab388c3b7
Author: Brian Paul <brianp at vmware.com>
Date: Mon Nov 30 09:21:49 2009 -0700
softpipe: setup machine->Face without a conditional
---
src/gallium/drivers/softpipe/sp_fs_exec.c | 7 ++-----
1 files changed, 2 insertions(+), 5 deletions(-)
diff --git a/src/gallium/drivers/softpipe/sp_fs_exec.c b/src/gallium/drivers/softpipe/sp_fs_exec.c
index a8999ed..27fa126 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)
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