Revise system for checking for uninstantiated proxies

The new pattern is:
  we will "instantiate" pipelines at flush time
  at flush time we will only access the backing GrSurface by peeking

  If instantiation fails we should never try to access the GrSurfaces


Change-Id: I87f7ff41bd0e84d9ca3dbdd61d3361d3d4ceefd6
Reviewed-on: https://skia-review.googlesource.com/17932
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/src/gpu/GrFragmentProcessor.h b/src/gpu/GrFragmentProcessor.h
index 00f2dbd9d8..ec8f317381 100644
--- a/src/gpu/GrFragmentProcessor.h
+++ b/src/gpu/GrFragmentProcessor.h
@@ -109,6 +109,8 @@ public:
 
     const GrFragmentProcessor& childProcessor(int index) const { return *fChildProcessors[index]; }
 
+    bool instantiate(GrResourceProvider*) const;
+
     /** Do any of the coordtransforms for this processor require local coords? */
     bool usesLocalCoords() const { return SkToBool(fFlags & kUsesLocalCoords_Flag); }
 
@@ -345,7 +347,7 @@ private:
      */
     SkSTArray<1, GrFragmentProcessor*, true> fChildProcessors;
 
-    typedef GrProcessor INHERITED;
+    typedef GrResourceIOProcessor INHERITED;
 };
 
 GR_MAKE_BITFIELD_OPS(GrFragmentProcessor::OptimizationFlags)