Allow TextureSamplers to have null GrTexture pointer

Bug: 715488

Change-Id: I69775cbb50d334d81872e236e59368fe65e698ff
Reviewed-on: https://skia-review.googlesource.com/14605
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/src/gpu/GrProcessor.h b/src/gpu/GrProcessor.h
index 1816db2ea5..7011267c76 100644
--- a/src/gpu/GrProcessor.h
+++ b/src/gpu/GrProcessor.h
@@ -176,8 +176,10 @@ public:
         return *fImageStorageAccesses[index];
     }
 
+    bool isBad() const { return fIsBad; }
+
 protected:
-    GrResourceIOProcessor() = default;
+    GrResourceIOProcessor() : fIsBad(false) {}
 
     /**
      * Subclasses call these from their constructor to register sampler/image sources. The processor
@@ -196,10 +198,13 @@ protected:
     void removeRefs() const;
     void pendingIOComplete() const;
 
+    void markAsBad() { fIsBad = true; }
+
 private:
     SkSTArray<4, const TextureSampler*, true> fTextureSamplers;
     SkSTArray<1, const BufferAccess*, true> fBufferAccesses;
     SkSTArray<1, const ImageStorageAccess*, true> fImageStorageAccesses;
+    bool fIsBad;
 
     typedef GrProcessor INHERITED;
 };
@@ -252,6 +257,8 @@ public:
      */
     const GrGpuResourceRef* programTexture() const { return &fTexture; }
 
+    bool isBad() const { return !fTexture.get(); }
+
 private:
 
     typedef GrTGpuResourceRef<GrTexture> ProgramTexture;