Cell: comment about emit_quad() mask

2008-02-01 16:54:46 -07:00
parent c90a2dcc29
commit 6522a0531f
1 changed files with 3 additions and 0 deletions
@@ -277,6 +277,9 @@ do_depth_test(int x, int y, mask_t quadmask)

 /**
 * Emit a quad (pass to next stage).  No clipping is done.
+ * Note: about 1/5 to 1/7 of the time, mask is zero and this function
+ * should be skipped.  But adding the test for that slows things down
+ * overall.
 */
 static INLINE void
 emit_quad( int x, int y, mask_t mask )