зеркало из https://github.com/mozilla/moz-skia.git
135 строки
4.4 KiB
C++
135 строки
4.4 KiB
C++
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/*
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* Copyright 2013 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 "SkBitmap.h"
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#include "SkCanvas.h"
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#include "SkShader.h"
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#include "SkString.h"
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static void create_gradient(SkBitmap* bm) {
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SkASSERT(1 == bm->width());
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const int height = bm->height();
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float deltaB = 255.0f / height;
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float blue = 255.0f;
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SkAutoLockPixels lock(*bm);
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for (int y = 0; y < height; y++) {
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*bm->getAddr32(0, y) = SkColorSetRGB(0, 0, (U8CPU) blue);
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blue -= deltaB;
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}
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}
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// Test out the special case of a tiled 1xN texture. Test out opacity,
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// filtering and the different tiling modes
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class ConstXTileBench : public Benchmark {
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SkPaint fPaint;
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SkString fName;
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bool fDoFilter;
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bool fDoTrans;
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bool fDoScale;
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static const int kWidth = 1;
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static const int kHeight = 300;
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public:
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ConstXTileBench(SkShader::TileMode xTile,
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SkShader::TileMode yTile,
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bool doFilter,
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bool doTrans,
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bool doScale)
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: fDoFilter(doFilter)
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, fDoTrans(doTrans)
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, fDoScale(doScale) {
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SkBitmap bm;
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bm.allocN32Pixels(kWidth, kHeight, true);
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bm.eraseColor(SK_ColorWHITE);
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create_gradient(&bm);
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SkShader* s = SkShader::CreateBitmapShader(bm, xTile, yTile);
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fPaint.setShader(s)->unref();
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fName.printf("constXTile_");
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static const char* gTileModeStr[SkShader::kTileModeCount] = { "C", "R", "M" };
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fName.append(gTileModeStr[xTile]);
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fName.append(gTileModeStr[yTile]);
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if (doFilter) {
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fName.append("_filter");
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}
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if (doTrans) {
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fName.append("_trans");
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}
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if (doScale) {
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fName.append("_scale");
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}
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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(const int loops, SkCanvas* canvas) {
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SkPaint paint(fPaint);
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this->setupPaint(&paint);
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paint.setFilterLevel(fDoFilter ? SkPaint::kLow_FilterLevel
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: SkPaint::kNone_FilterLevel);
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if (fDoTrans) {
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paint.setColor(SkColorSetARGBMacro(0x80, 0xFF, 0xFF, 0xFF));
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}
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SkRect r;
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if (fDoScale) {
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r = SkRect::MakeWH(SkIntToScalar(2 * 640), SkIntToScalar(2 * 480));
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canvas->scale(SK_ScalarHalf, SK_ScalarHalf);
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} else {
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r = SkRect::MakeWH(SkIntToScalar(640), SkIntToScalar(480));
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}
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SkPaint bgPaint;
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bgPaint.setColor(SK_ColorWHITE);
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for (int i = 0; i < loops; i++) {
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if (fDoTrans) {
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canvas->drawRect(r, bgPaint);
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}
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canvas->drawRect(r, paint);
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}
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}
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private:
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typedef Benchmark INHERITED;
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};
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// Scaled benches are trending towards free. Seems like caching.
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// TODO(mtklein, reed): fix and reenable
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//DEF_BENCH(return new ConstXTileBench(SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, false, false, true))
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DEF_BENCH(return new ConstXTileBench(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, false, false, false))
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//DEF_BENCH(return new ConstXTileBench(SkShader::kMirror_TileMode, SkShader::kMirror_TileMode, false, false, true))
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DEF_BENCH(return new ConstXTileBench(SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, true, false, false))
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//DEF_BENCH(return new ConstXTileBench(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, true, false, true))
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DEF_BENCH(return new ConstXTileBench(SkShader::kMirror_TileMode, SkShader::kMirror_TileMode, true, false, false))
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//DEF_BENCH(return new ConstXTileBench(SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, false, true, true))
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DEF_BENCH(return new ConstXTileBench(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, false, true, false))
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//DEF_BENCH(return new ConstXTileBench(SkShader::kMirror_TileMode, SkShader::kMirror_TileMode, false, true, true))
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DEF_BENCH(return new ConstXTileBench(SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, true, true, false))
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//DEF_BENCH(return new ConstXTileBench(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, true, true, true))
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DEF_BENCH(return new ConstXTileBench(SkShader::kMirror_TileMode, SkShader::kMirror_TileMode, true, true, false))
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