i915g: Add comment about DDX/DDY.

This commit is contained in:
Stéphane Marchesin
2011-07-03 19:44:02 -07:00
parent 26e7436ad3
commit cc78eb63cd
@@ -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.