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      1 /*
      2  * Copyright 2015 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 
      9 #include "SkGlyphCache.h"
     10 
     11 #include "Benchmark.h"
     12 #include "SkCanvas.h"
     13 #include "SkGlyphCache_Globals.h"
     14 #include "SkGraphics.h"
     15 #include "SkTaskGroup.h"
     16 #include "SkTypeface.h"
     17 #include "sk_tool_utils.h"
     18 
     19 
     20 static void do_font_stuff(SkPaint* paint) {
     21     for (SkScalar i = 8; i < 64; i++) {
     22         paint->setTextSize(i);
     23         SkAutoGlyphCacheNoGamma autoCache(*paint, nullptr, nullptr);
     24         SkGlyphCache* cache = autoCache.getCache();
     25         uint16_t glyphs['z'];
     26         for (int c = ' '; c < 'z'; c++) {
     27             glyphs[c] = cache->unicharToGlyph(c);
     28         }
     29         for (int lookups = 0; lookups < 10; lookups++) {
     30             for (int c = ' '; c < 'z'; c++) {
     31                 const SkGlyph& g = cache->getGlyphIDMetrics(glyphs[c]);
     32                 cache->findImage(g);
     33             }
     34         }
     35 
     36     }
     37 }
     38 
     39 class SkGlyphCacheBasic : public Benchmark {
     40 public:
     41     explicit SkGlyphCacheBasic(size_t cacheSize) : fCacheSize(cacheSize) { }
     42 
     43 protected:
     44     const char* onGetName() override {
     45         fName.printf("SkGlyphCacheBasic%dK", (int)(fCacheSize >> 10));
     46         return fName.c_str();
     47     }
     48 
     49     bool isSuitableFor(Backend backend) override {
     50         return backend == kNonRendering_Backend;
     51     }
     52 
     53     void onDraw(int loops, SkCanvas*) override {
     54         size_t oldCacheLimitSize = SkGraphics::GetFontCacheLimit();
     55         SkGraphics::SetFontCacheLimit(fCacheSize);
     56         SkTypeface* typeface = sk_tool_utils::create_portable_typeface(
     57             "serif", SkTypeface::kItalic);
     58         SkPaint paint;
     59         paint.setAntiAlias(true);
     60         paint.setSubpixelText(true);
     61         paint.setTypeface(typeface);
     62 
     63         for (int work = 0; work < loops; work++) {
     64             do_font_stuff(&paint);
     65         }
     66         SkGraphics::SetFontCacheLimit(oldCacheLimitSize);
     67         SkSafeUnref(typeface);
     68     }
     69 
     70 private:
     71     typedef Benchmark INHERITED;
     72     const size_t fCacheSize;
     73     SkString fName;
     74 };
     75 
     76 class SkGlyphCacheStressTest : public Benchmark {
     77 public:
     78     explicit SkGlyphCacheStressTest(int cacheSize) : fCacheSize(cacheSize) { }
     79 
     80 protected:
     81     const char* onGetName() override {
     82         fName.printf("SkGlyphCacheStressTest%dK", (int)(fCacheSize >> 10));
     83         return fName.c_str();
     84     }
     85 
     86     bool isSuitableFor(Backend backend) override {
     87         return backend == kNonRendering_Backend;
     88     }
     89 
     90     void onDraw(int loops, SkCanvas*) override {
     91         size_t oldCacheLimitSize = SkGraphics::GetFontCacheLimit();
     92         SkGraphics::SetFontCacheLimit(fCacheSize);
     93         SkTypeface* typefaces[] =
     94             {sk_tool_utils::create_portable_typeface("serif", SkTypeface::kItalic),
     95              sk_tool_utils::create_portable_typeface("sans-serif", SkTypeface::kItalic)};
     96 
     97         for (int work = 0; work < loops; work++) {
     98             SkTaskGroup().batch(16, [&](int threadIndex) {
     99                 SkPaint paint;
    100                 paint.setAntiAlias(true);
    101                 paint.setSubpixelText(true);
    102                 paint.setTypeface(typefaces[threadIndex % 2]);
    103                 do_font_stuff(&paint);
    104             });
    105         }
    106         SkGraphics::SetFontCacheLimit(oldCacheLimitSize);
    107         SkSafeUnref(typefaces[0]);
    108         SkSafeUnref(typefaces[1]);
    109     }
    110 
    111 private:
    112     typedef Benchmark INHERITED;
    113     const size_t fCacheSize;
    114     SkString fName;
    115 };
    116 
    117 DEF_BENCH( return new SkGlyphCacheBasic(256 * 1024); )
    118 DEF_BENCH( return new SkGlyphCacheBasic(32 * 1024 * 1024); )
    119 DEF_BENCH( return new SkGlyphCacheStressTest(256 * 1024); )
    120 DEF_BENCH( return new SkGlyphCacheStressTest(32 * 1024 * 1024); )
    121