From: Brian Paul <brianp@vmware.com>
Date: Sun, 18 Apr 2010 16:01:53 +0000 (-0600)
Subject: tgsi: add comment about potential code removal
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=0490116f96e61c6d8d26c2383736990cceef799b;p=mesa.git

tgsi: add comment about potential code removal
---

diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.c b/src/gallium/auxiliary/tgsi/tgsi_exec.c
index f853ea2820e..11045e4ba2f 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_exec.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_exec.c
@@ -1796,6 +1796,12 @@ exec_declaration(struct tgsi_exec_machine *mach,
          last = decl->Range.Last;
          mask = decl->Declaration.UsageMask;
 
+         /* XXX we could remove this special-case code since
+          * mach->InterpCoefs[first].a0 should already have the
+          * front/back-face value.  But we should first update the
+          * ureg code to emit the right UsageMask value (WRITEMASK_X).
+          * Then, we could remove the tgsi_exec_machine::Face field.
+          */
          if (decl->Semantic.Name == TGSI_SEMANTIC_FACE) {
             uint i;