cb72722cb9
Bug: skia: Change-Id: I6e620befd2fe8e84f744e79e9287d9d2d19ffa57 Reviewed-on: https://skia-review.googlesource.com/21389 Reviewed-by: Greg Daniel <egdaniel@google.com> Commit-Queue: Chris Dalton <csmartdalton@google.com>
87 lines
3.0 KiB
C++
87 lines
3.0 KiB
C++
/*
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* Copyright 2017 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 "Benchmark.h"
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#include "SkCanvas.h"
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#include "SkGlyphCache.h"
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#include "SkPaint.h"
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#include "SkPath.h"
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#include "SkRandom.h"
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static constexpr int kScreenWidth = 1500;
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static constexpr int kScreenHeight = 1500;
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static constexpr int kNumDraws = 2000;
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// I and l are rects on OS X.
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static constexpr char kGlyphs[] = "ABCDEFGH7JKLMNOPQRSTUVWXYZabcdefghijk1mnopqrstuvwxyz";
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static constexpr int kNumGlyphs = sizeof(kGlyphs) - 1;
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static_assert(52 == kNumGlyphs, "expected 52 glyphs");
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/*
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* This class benchmarks drawing many glyphs at random scales and rotations.
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*/
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class PathTextBench : public Benchmark {
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public:
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bool isVisual() override { return true; }
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private:
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const char* onGetName() override {
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return "path_text";
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}
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SkIPoint onGetSize() override { return SkIPoint::Make(kScreenWidth, kScreenHeight); }
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void onDelayedSetup() override {
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SkPaint defaultPaint;
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SkAutoGlyphCache agc(defaultPaint, nullptr, &SkMatrix::I());
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SkGlyphCache* cache = agc.getCache();
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for (int i = 0; i < kNumGlyphs; ++i) {
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SkGlyphID id = cache->unicharToGlyph(kGlyphs[i]);
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cache->getScalerContext()->getPath(SkPackedGlyphID(id), &fGlyphs[i]);
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}
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SkRandom rand;
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for (int i = 0; i < kNumDraws; ++i) {
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const SkPath& glyph = fGlyphs[i % kNumGlyphs];
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const SkRect& bounds = glyph.getBounds();
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float glyphSize = SkTMax(bounds.width(), bounds.height());
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float t0 = pow(rand.nextF(), 100);
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float size = (1 - t0) * SkTMin(kScreenWidth, kScreenHeight) / 50 +
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t0 * SkTMin(kScreenWidth, kScreenHeight) / 3;
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float scale = size / glyphSize;
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float t1 = rand.nextF(), t2 = rand.nextF();
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fXforms[i].setTranslate((1 - t1) * sqrt(2) * scale/2 * glyphSize +
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t1 * (kScreenWidth - sqrt(2) * scale/2 * glyphSize),
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(1 - t2) * sqrt(2) * scale/2 * glyphSize +
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t2 * (kScreenHeight - sqrt(2) * scale/2 * glyphSize));
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fXforms[i].preRotate(rand.nextF() * 360);
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fXforms[i].preTranslate(-scale/2 * bounds.width(), -scale/2 * bounds.height());
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fXforms[i].preScale(scale, scale);
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fPaints[i].setAntiAlias(true);
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fPaints[i].setColor(rand.nextU() | 0x80808080);
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}
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}
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void onDraw(int loops, SkCanvas* canvas) override {
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SkAutoCanvasRestore acr(canvas, true);
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for (int i = 0; i < kNumDraws; ++i) {
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const SkPath& glyph = fGlyphs[i % kNumGlyphs];
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canvas->setMatrix(fXforms[i]);
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canvas->drawPath(glyph, fPaints[i]);
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}
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}
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SkPath fGlyphs[kNumGlyphs];
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SkPaint fPaints[kNumDraws];
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SkMatrix fXforms[kNumDraws];
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typedef Benchmark INHERITED;
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};
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DEF_BENCH(return new PathTextBench;)
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