Mesa (master): i915g: Add comment about DDX/DDY.

[Stephane Marchesin]

Module: Mesa
Branch: master
Commit: cc78eb63cdc0022684ca6816f258ea4492431916
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=cc78eb63cdc0022684ca6816f258ea4492431916

Author: Stéphane Marchesin <marcheu at chromium.org>
Date:   Sun Jul  3 19:44:02 2011 -0700

i915g: Add comment about DDX/DDY.

---

 src/gallium/drivers/i915/i915_fpc_translate.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/src/gallium/drivers/i915/i915_fpc_translate.c b/src/gallium/drivers/i915/i915_fpc_translate.c
index 0cbd4f2..df606e2 100644
--- a/src/gallium/drivers/i915/i915_fpc_translate.c
+++ b/src/gallium/drivers/i915/i915_fpc_translate.c
@@ -450,6 +450,7 @@ emit_simple_arith_swap2(struct i915_fp_compile *p,
  *
  * Possible concerns:
  *
+ * DDX, DDY -- return 0
  * SIN, COS -- could use another taylor step?
  * LIT      -- results seem a little different to sw mesa
  * LOG      -- different to mesa on negative numbers, but this is conformant.