skpbench: add option for gpu timing

tools/gpu/TestContext.h

 
 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef TestContext_DEFINED
 #define TestContext_DEFINED
 
 #include "FenceSync.h"
 #include "GrTypes.h"
 #include "../private/SkTemplates.h"
 
 namespace sk_gpu_test {
+
+class GpuTimer;
+
 /**
  * An offscreen 3D context. This class is intended for Skia's internal testing needs and not
  * for general use.
  */
 class TestContext : public SkNoncopyable {
 public:
     virtual ~TestContext();
 
     virtual bool isValid() const = 0;
 
     bool fenceSyncSupport() const { return fFenceSync != nullptr; }
     FenceSync* fenceSync() { SkASSERT(fFenceSync); return fFenceSync; }
 
+    bool gpuTimingSupport() const { return fGpuTimer != nullptr; }
+    GpuTimer* gpuTimer() const { SkASSERT(fGpuTimer); return fGpuTimer; }
+
     bool getMaxGpuFrameLag(int *maxFrameLag) const {
         if (!fFenceSync) {
             return false;
         }
         *maxFrameLag = kMaxFrameLag;
         return true;
     }
 
     void makeCurrent() const;
 
@@ skipping 28 matching lines @@
      */
     virtual void testAbandon();
 
     /** Ensures all work is submitted to the GPU for execution. */
     virtual void submit() = 0;
 
     /** Wait until all GPU work is finished. */
     virtual void finish() = 0;
 
 protected:
-    FenceSync* fFenceSync;
+    SkAutoTDelete<FenceSync>   fFenceSync;
+    SkAutoTDelete<GpuTimer>    fGpuTimer;
 
     TestContext();
 
     /** This should destroy the 3D context. */
     virtual void teardown();
 
     virtual void onPlatformMakeCurrent() const = 0;
     virtual void onPlatformSwapBuffers() const = 0;
 
 private:
     enum {
         kMaxFrameLag = 3
     };
 
     PlatformFence fFrameFences[kMaxFrameLag - 1];
     int fCurrentFenceIdx;
 
     typedef SkNoncopyable INHERITED;
 };
 }  // namespace sk_gpu_test
 #endif