9ed02b9da2
Renamed SkDeferredCanvas::DeviceContext to SkDeferredCanvas::NotificationClient BUG=http://code.google.com/p/chromium/issues/detail?id=136828 TEST=Added coverage for new API to DeferredCanvas unit test. Added DeferredCanvas bench test to track deferred canvas overhead cost. Review URL: https://codereview.appspot.com/6442108 git-svn-id: http://skia.googlecode.com/svn/trunk@5078 2bbb7eff-a529-9590-31e7-b0007b416f81
108 lines
3.2 KiB
C++
108 lines
3.2 KiB
C++
/*
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* Copyright 2012 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SkBenchmark.h"
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#include "SkDeferredCanvas.h"
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#include "SkDevice.h"
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#include "SkString.h"
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class DeferredCanvasBench : public SkBenchmark {
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public:
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DeferredCanvasBench(void* param, const char name[]) : INHERITED(param) {
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fName.printf("deferred_canvas_%s", name);
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}
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enum {
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N = SkBENCHLOOP(25), // number of times to create the picture
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CANVAS_WIDTH = 200,
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CANVAS_HEIGHT = 200,
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};
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protected:
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virtual const char* onGetName() {
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return fName.c_str();
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}
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virtual void onDraw(SkCanvas* canvas) {
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SkDeferredCanvas deferredCanvas(canvas->getDevice()->createCompatibleDevice(
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SkBitmap::kARGB_8888_Config, CANVAS_WIDTH, CANVAS_HEIGHT, false));
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initDeferredCanvas(deferredCanvas);
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for (int i = 0; i < N; i++) {
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drawInDeferredCanvas(deferredCanvas);
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}
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finalizeDeferredCanvas(deferredCanvas);
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deferredCanvas.flush();
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}
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virtual void initDeferredCanvas(SkDeferredCanvas& canvas) = 0;
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virtual void drawInDeferredCanvas(SkDeferredCanvas& canvas) = 0;
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virtual void finalizeDeferredCanvas(SkDeferredCanvas& canvas) = 0;
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SkString fName;
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private:
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typedef SkBenchmark INHERITED;
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};
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class SimpleNotificationClient : public SkDeferredCanvas::NotificationClient {
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public:
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SimpleNotificationClient() : fDummy(false) {}
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//bogus virtual implementations that just do something small
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virtual void prepareForDraw() SK_OVERRIDE {fDummy = true;}
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virtual void storageAllocatedForRecordingChanged(size_t) SK_OVERRIDE {fDummy = false;}
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virtual void flushedDrawCommands() SK_OVERRIDE {fDummy = !fDummy;}
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private:
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bool fDummy;
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};
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// Test that records very simple draw operations.
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// This benchmark aims to capture performance fluctuations in the recording
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// overhead of SkDeferredCanvas
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class DeferredRecordBench : public DeferredCanvasBench {
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public:
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DeferredRecordBench(void* param)
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: INHERITED(param, "record") {
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}
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enum {
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M = SkBENCHLOOP(700), // number of individual draws in each loop
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};
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protected:
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virtual void initDeferredCanvas(SkDeferredCanvas& canvas) SK_OVERRIDE {
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canvas.setNotificationClient(SkNEW(SimpleNotificationClient))->unref();
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}
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virtual void drawInDeferredCanvas(SkDeferredCanvas& canvas) SK_OVERRIDE {
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SkRect rect;
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rect.setXYWH(0, 0, 10, 10);
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SkPaint paint;
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for (int i = 0; i < M; i++) {
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canvas.save(SkCanvas::kMatrixClip_SaveFlag);
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canvas.translate(SkIntToScalar(i * 27 % CANVAS_WIDTH), SkIntToScalar(i * 13 % CANVAS_HEIGHT));
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canvas.drawRect(rect, paint);
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canvas.restore();
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}
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}
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virtual void finalizeDeferredCanvas(SkDeferredCanvas& canvas) SK_OVERRIDE {
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canvas.clear(0x0);
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}
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private:
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typedef DeferredCanvasBench INHERITED;
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};
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///////////////////////////////////////////////////////////////////////////////
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static SkBenchmark* Fact0(void* p) { return new DeferredRecordBench(p); }
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static BenchRegistry gReg0(Fact0);
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