Add a bench to exercise legacy-mode SkRasterPipeline behavior.

No fancy f16 or sRGB here... just good old legacy 8888.

Change-Id: I21eb7c0d8e2c7a7d92e9d8a8bae9d318c4daa7e5
Reviewed-on: https://skia-review.googlesource.com/7109
Reviewed-by: Mike Klein <mtklein@chromium.org>
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>

1 files changed, 35 insertions, 0 deletions

diff --git a/bench/SkRasterPipelineBench.cpp b/bench/SkRasterPipelineBench.cpp
index 6d9bb49f50..9afc029c30 100644
--- a/bench/SkRasterPipelineBench.cpp
+++ b/bench/SkRasterPipelineBench.cpp
@@ -76,3 +76,38 @@ DEF_BENCH( return (new SkRasterPipelineBench< true,  true>); )
 DEF_BENCH( return (new SkRasterPipelineBench<false,  true>); )
 DEF_BENCH( return (new SkRasterPipelineBench< true, false>); )
 DEF_BENCH( return (new SkRasterPipelineBench<false, false>); )
+
+template <bool kCompiled>
+class SkRasterPipelineLegacyBench : public Benchmark {
+public:
+    bool isSuitableFor(Backend backend) override { return backend == kNonRendering_Backend; }
+    const char* onGetName() override {
+        return kCompiled ? "SkRasterPipeline_legacy_compile"
+                         : "SkRasterPipeline_legacy_run";
+    }
+
+    void onDraw(int loops, SkCanvas*) override {
+        void*  src_ctx = src;
+        void*  dst_ctx = dst;
+
+        SkRasterPipeline p;
+        p.append(SkRasterPipeline::load_8888, &dst_ctx);
+        p.append(SkRasterPipeline::move_src_dst);
+        p.append(SkRasterPipeline::load_8888, &src_ctx);
+        p.append(SkRasterPipeline::srcover);
+        p.append(SkRasterPipeline::store_8888, &dst_ctx);
+
+        if (kCompiled) {
+            auto compiled = p.compile();
+            while (loops --> 0) {
+                compiled(0,0, N);
+            }
+        } else {
+            while (loops --> 0) {
+                p.run(0,0, N);
+            }
+        }
+    }
+};
+DEF_BENCH( return (new SkRasterPipelineLegacyBench< true>); )
+DEF_BENCH( return (new SkRasterPipelineLegacyBench<false>); )