http://codereview.appspot.com/6387043/
git-svn-id: http://skia.googlecode.com/svn/trunk@4489
2bbb7eff-a529-9590-31e7-
b0007b416f81
To test for equivalence (that they will generate the same
shader code, but may have different uniforms), check equality
of the stageKey produced by the GrProgramStageFactory:
- a.getFactory().genStageKey(a) == b.getFactory().genStageKey(b). */
+ a.getFactory().glStageKey(a) == b.getFactory().glStageKey(b). */
virtual bool isEqual(const GrCustomStage&) const = 0;
/** Human-meaningful string to identify this effect; may be embedded