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Update text blob benchmark to reflect reality

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w/ mtklein suggestions

Change-Id: Ifd7310ad71020c23514c663a0671400112b04e75
Reviewed-on: https://skia-review.googlesource.com/145824
Commit-Queue: Mike Klein <mtklein@google.com>
Commit-Queue: Herb Derby <herb@google.com>
Reviewed-by: Herb Derby <herb@google.com>
Auto-Submit: Herb Derby <herb@google.com>
This commit is contained in:
Herb Derby 2018-08-07 13:29:41 -04:00 committed by Skia Commit-Bot
parent c0c99b3a69
commit 430424bd74
1 changed files with 47 additions and 31 deletions
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78
bench/TextBlobBench.cpp
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@ -21,52 +21,68 @@
/*
* A trivial test which benchmarks the performance of a textblob with a single run.
*/
class TextBlobBench : public Benchmark {
class SkTextBlobBench : public Benchmark {
public:
TextBlobBench() {}
SkTextBlobBench() {}
protected:
void onDelayedSetup() override {
fTypeface = sk_tool_utils::create_portable_typeface("serif", SkFontStyle());
// make textblob
SkPaint paint;
paint.setTypeface(fTypeface);
const char* text = "Hello blob!";
SkTDArray<uint16_t> glyphs;
size_t len = strlen(text);
glyphs.append(paint.textToGlyphs(text, len, nullptr));
paint.textToGlyphs(text, len, glyphs.begin());
fPaint.setTypeface(sk_tool_utils::create_portable_typeface("serif", SkFontStyle()));
fPaint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
SkTextBlobBuilder builder;
// This text seems representative in both length and letter frequency.
const char* text = "Keep your sentences short, but not overly so.";
paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
const SkTextBlobBuilder::RunBuffer& run = builder.allocRun(paint, glyphs.count(), 10, 10,
nullptr);
memcpy(run.glyphs, glyphs.begin(), glyphs.count() * sizeof(uint16_t));
fBlob = builder.make();
fGlyphs.setCount(fPaint.textToGlyphs(text, strlen(text), nullptr));
fPaint.textToGlyphs(text, strlen(text), fGlyphs.begin());
}
sk_sp<SkTextBlob> makeBlob() {
const SkTextBlobBuilder::RunBuffer& run =
fBuilder.allocRunPosH(fPaint, fGlyphs.count(), 10, nullptr);
for (int i = 0; i < fGlyphs.count(); i++) {
run.glyphs[i] = fGlyphs[i];
run. pos[i] = (i+1) * 10;
}
return fBuilder.make();
}
private:
SkTextBlobBuilder fBuilder;
SkPaint fPaint;
SkTDArray<uint16_t> fGlyphs;
typedef Benchmark INHERITED;
};
class TextBlobCachedBench : public SkTextBlobBench {
const char* onGetName() override {
return "TextBlobBench";
return "TextBlobCachedBench";
}
void onDraw(int loops, SkCanvas* canvas) override {
SkPaint paint;
// To ensure maximum caching, we just redraw the blob at the same place everytime
auto blob = this->makeBlob();
for (int i = 0; i < loops; i++) {
canvas->drawTextBlob(fBlob, 0, 0, paint);
// To ensure maximum caching, we just redraw the blob at the same place everytime
canvas->drawTextBlob(blob, 0, 0, paint);
}
}
private:
sk_sp<SkTextBlob> fBlob;
SkTDArray<uint16_t> fGlyphs;
sk_sp<SkTypeface> fTypeface;
typedef Benchmark INHERITED;
};
DEF_BENCH( return new TextBlobBench(); )
class TextBlobFirstTimeBench : public SkTextBlobBench {
const char* onGetName() override {
return "TextBlobFirstTimeBench";
}
void onDraw(int loops, SkCanvas* canvas) override {
SkPaint paint;
for (int i = 0; i < loops; i++) {
canvas->drawTextBlob(this->makeBlob(), 0, 0, paint);
}
}
};
DEF_BENCH( return new TextBlobCachedBench(); )
DEF_BENCH( return new TextBlobFirstTimeBench(); )