Implement a benchmark for GrResourceCache

bench/SkBenchmark.h

Index: bench/SkBenchmark.h
diff --git a/bench/SkBenchmark.h b/bench/SkBenchmark.h
index ec40077527b777285d6085949194a459fd844f00..1a31cbe6f74e6cf462d5522082e251bbfebe5020 100644
--- a/bench/SkBenchmark.h
+++ b/bench/SkBenchmark.h
@@ -29,6 +29,9 @@ static BenchRegistry SK_MACRO_APPEND_LINE(R_)(SK_MACRO_APPEND_LINE(F_));
 
 class SkCanvas;
 class SkPaint;
+#if SK_SUPPORT_GPU
+class GrContext;
+#endif
 
 class SkTriState {
 public:
@@ -49,6 +52,19 @@ public:
     const char* getName();
     SkIPoint getSize();
 
+    enum Backend {
+        kNonRendering_Backend,
+        kRaster_Backend,
+        kGPU_Backend,
+        kPDF_Backend,
+    };
+
+    // Call to determine whether the benchmark is intended for
+    // the rendering mode.
+    virtual bool isSuitableFor(Backend) {
+        return true;
+    }
+
     // Call before draw, allows the benchmark to do setup work outside of the
     // timer. When a benchmark is repeatedly drawn, this should be called once
     // before the initial draw.
@@ -77,13 +93,6 @@ public:
         fDither = state;
     }
 
-    /** If true; the benchmark does rendering; if false, the benchmark
-        doesn't, and so need not be re-run in every different rendering
-        mode. */
-    bool isRendering() {
-        return fIsRendering;
-    }
-
     /** Assign masks for paint-flags. These will be applied when setupPaint()
      *  is called.
      *
@@ -111,17 +120,23 @@ public:
 
     static SkString& GetResourcePath() { return gResourcePath; }
 
+#if SK_SUPPORT_GPU
+    virtual void setContext(GrContext* context) { fContext = context; };

[mtklein, 2013/11/19 12:59:01]

Would something like GrContext* GM::GetGr(SkCanvas*) (in gm/gm.cpp) work here
too?  Seems annoying to have to thread the context through if it's retrievable
from the canvas.  If it is, we could extract that function into a little file to
share between bench and GM.

[Kimmo Kinnunen, 2013/11/19 14:12:49]

Done.

+#endif
+
 protected:
     virtual void setupPaint(SkPaint* paint);
 
+
     virtual const char* onGetName() = 0;
     virtual void onPreDraw() {}
     virtual void onDraw(SkCanvas*) = 0;
     virtual void onPostDraw() {}
 
     virtual SkIPoint onGetSize();
-    /// Defaults to true.
-    bool    fIsRendering;
+#if SK_SUPPORT_GPU
+    GrContext* fContext;
+#endif
 
 private:
     int     fForceAlpha;