Skip temp texture when config conversion test has already failed.

include/gpu/GrContext.h

Index: include/gpu/GrContext.h
diff --git a/include/gpu/GrContext.h b/include/gpu/GrContext.h
index 65fac230ccabd8eb7b2a650eba3e62b99b843bd2..1f776abb1a6aab1eef16d848fb3c997d45d018e3 100644
--- a/include/gpu/GrContext.h
+++ b/include/gpu/GrContext.h
@@ -445,6 +445,7 @@ private:
                                                    bool swapRAndB, const SkMatrix&);
     const GrFragmentProcessor* createUPMToPMEffect(GrProcessorDataManager*, GrTexture*,
                                                    bool swapRAndB, const SkMatrix&);

[robertphillips, 2015/07/29 12:35:05]

// If true both createPMToUPMEffect & createUPMToPMEffect will return NULL. In
such cases Ganesh will fall back to SW.
?

[bsalomon, 2015/07/29 13:01:34]

Done.

+    bool didFailPMUPMConversionTest() const;
 
     /**
      *  This callback allows the resource cache to callback into the GrContext