Implement a benchmark for GrResourceCache

Adds "grresourcecache_add" and "grresourcecache_find" bench tests to test
GrResourceCache::add and GrResourceCache::find. The tests work only
with GPU backends, since GrResourceCache needs an GrGpu.

Modifies bench tests to override SkBenchmark::isSuitableFor(Backend)
function that specifies what kind of backend the test is inteded
for. This replaces the previous "fIsRendering" flag that would
indicate test that did no rendering.

Adds SkCanvas::getGrContext() call to get the GrContext that the
canvas ends up drawing to. The member function solves a common
use-case that is also used in the benchmark added here.

R=mtklein@google.com, bsalomon@google.com

Author: kkinnunen@nvidia.com

Review URL: https://codereview.chromium.org/73643005

git-svn-id: http://skia.googlecode.com/svn/trunk@12334 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 10 insertions, 4 deletions

diff --git a/bench/PathBench.cpp b/bench/PathBench.cpp
index 11151d9d45..b3d4ab1200 100644
--- a/bench/PathBench.cpp
+++ b/bench/PathBench.cpp
@@ -216,8 +216,8 @@ private:
 
 class RandomPathBench : public SkBenchmark {
 public:
-    RandomPathBench()  {
-        fIsRendering = false;
+    virtual bool isSuitableFor(Backend backend) SK_OVERRIDE {
+        return backend == kNonRendering_Backend;
     }
 
 protected:
@@ -761,7 +761,6 @@ public:
     };
 
     ConservativelyContainsBench(Type type)  {
-        fIsRendering = false;
         fParity = false;
         fName = "conservatively_contains_";
         switch (type) {
@@ -780,6 +779,10 @@ public:
         }
     }
 
+    virtual bool isSuitableFor(Backend backend) SK_OVERRIDE {
+        return backend == kNonRendering_Backend;
+    }
+
 private:
     virtual const char* onGetName() SK_OVERRIDE {
         return fName.c_str();
@@ -903,7 +906,10 @@ public:
         for (int i = 0; i < CONICS; ++i) {
             rand_conic(&fConics[i], rand);
         }
-        fIsRendering = false;
+    }
+
+    virtual bool isSuitableFor(Backend backend) SK_OVERRIDE {
+        return backend == kNonRendering_Backend;
     }
 
 protected: