SkPictureGpuAnalyzer

include/core/SkPictureAnalyzer.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 SkPictureAnalyzer_DEFINED
+#define SkPictureAnalyzer_DEFINED
+
+#include "SkRefCnt.h"
+#include "SkTypes.h"
+
+class GrContextThreadSafeProxy;
+class SkPicture;
+
+/** \class SkPictureGpuAnalyzer
+
+     Gathers GPU-related statistics for one or more SkPictures.
+*/
+class SK_API SkPictureGpuAnalyzer final : public SkNoncopyable {
+public:
+    explicit SkPictureGpuAnalyzer(GrContextThreadSafeProxy* = nullptr);

[bsalomon, 2016/05/13 16:14:27]

sk_sp<GrContextThreadSafeProxy>?

[f(malita), 2016/05/13 16:59:16]

Done.  This also forced me to think about non-SK_SUPPORT_GPU builds: since this
helper is GPU-specific, I've added guards to hide it in that case.

+    explicit SkPictureGpuAnalyzer(const sk_sp<SkPicture>& picture,
+                                  GrContextThreadSafeProxy* = nullptr);
+
+    /**
+     *  Process the given picture and accumulate its stats.
+     */
+    void analyze(const SkPicture*);
+
+    /**
+     *  Reset all accumulated stats.
+     */
+    void reset();
+
+    /**
+     *  Returns true if the analyzed pictures are suitable for rendering on the GPU.
+     */
+    bool suitableForGpuRasterization(const char** whyNot = nullptr) const;
+
+private:
+    uint32_t fNumSlowPaths;
+
+    typedef SkNoncopyable INHERITED;
+};
+
+#endif // SkPictureAnalyzer_DEFINED