Adding checksum to SkFlatData to accelerate SkPicture recording.
The checksum triggers an early exit in the mem compare use to search for duplicate flattened objects. Also, call to memcmp was replaced with 64-bit at a time comparison loop.
Review URL: http://codereview.appspot.com/6339046/
BUG=http://code.google.com/p/chromium/issues/detail?id=54079
TEST=Checksum and PictureRecord tests in bench.exe
git-svn-id: http://skia.googlecode.com/svn/trunk@4378 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/bench/PictureRecordBench.cpp b/bench/PictureRecordBench.cpp
index e42e534..2e01d6c 100644
--- a/bench/PictureRecordBench.cpp
+++ b/bench/PictureRecordBench.cpp
@@ -123,8 +123,65 @@
typedef PictureRecordBench INHERITED;
};
+/*
+ * Populates the SkPaint dictionary with a large number of unique paint
+ * objects that differ only by color
+ */
+class UniquePaintDictionaryRecordBench : public PictureRecordBench {
+public:
+ UniquePaintDictionaryRecordBench(void* param)
+ : INHERITED(param, "unique_paint_dictionary") { }
+
+ enum {
+ M = SkBENCHLOOP(15000), // number of unique paint objects
+ };
+protected:
+ virtual void recordCanvas(SkCanvas* canvas) {
+
+ for (int i = 0; i < M; i++) {
+ SkPaint paint;
+ paint.setColor(i);
+ canvas->drawPaint(paint);
+ }
+ }
+
+private:
+ typedef PictureRecordBench INHERITED;
+};
+
+/*
+ * Populates the SkPaint dictionary with a number of unique paint
+ * objects that get reused repeatedly
+ */
+class RecurringPaintDictionaryRecordBench : public PictureRecordBench {
+public:
+ RecurringPaintDictionaryRecordBench(void* param)
+ : INHERITED(param, "recurring_paint_dictionary") { }
+
+ enum {
+ ObjCount = 100, // number of unique paint objects
+ M = SkBENCHLOOP(50000), // number of draw iterations
+ };
+protected:
+ virtual void recordCanvas(SkCanvas* canvas) {
+
+ for (int i = 0; i < M; i++) {
+ SkPaint paint;
+ paint.setColor(i % ObjCount);
+ canvas->drawPaint(paint);
+ }
+ }
+
+private:
+ typedef PictureRecordBench INHERITED;
+};
+
///////////////////////////////////////////////////////////////////////////////
static SkBenchmark* Fact0(void* p) { return new DictionaryRecordBench(p); }
+static SkBenchmark* Fact1(void* p) { return new UniquePaintDictionaryRecordBench(p); }
+static SkBenchmark* Fact2(void* p) { return new RecurringPaintDictionaryRecordBench(p); }
static BenchRegistry gReg0(Fact0);
+static BenchRegistry gReg1(Fact1);
+static BenchRegistry gReg2(Fact2);