dbfd7ab108
'static const' means, there must be at most one of these, and initialize it at compile time if possible or runtime if necessary. This leads to unexpected code execution, and TSAN* will complain about races on the guard variables. Generally 'constexpr' or 'const' are better choices. Neither can cause races: they're either intialized at compile time (constexpr) or intialized each time independently (const). This CL prefers constexpr where possible, and uses const where not. It even prefers constexpr over const where they don't make a difference... I want to have lots of examples of constexpr for people to see and mimic. The scoped-to-class static has nothing to do with any of this, and is not changed. * Not yet on the bots, which use an older TSAN. BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2300623005 Review-Url: https://codereview.chromium.org/2300623005
143 lines
4.0 KiB
C++
143 lines
4.0 KiB
C++
/*
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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 "gm.h"
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#include "SkPath.h"
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#include "SkRandom.h"
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#include "SkRRect.h"
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namespace skiagm {
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// Test out various combinations of nested rects, ovals and rrects.
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class NestedGM : public GM {
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public:
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NestedGM(bool doAA, bool flipped) : fDoAA(doAA), fFlipped(flipped) {
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this->setBGColor(sk_tool_utils::color_to_565(0xFFDDDDDD));
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}
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protected:
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SkString onShortName() override {
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SkString name("nested");
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if (fFlipped) {
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name.append("_flipY");
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}
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if (fDoAA) {
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name.append("_aa");
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} else {
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name.append("_bw");
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}
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return name;
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}
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SkISize onISize() override {
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return SkISize::Make(kImageWidth, kImageHeight);
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}
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enum Shapes {
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kRect_Shape = 0,
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kRRect_Shape,
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kOval_Shape,
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kShapeCount
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};
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static void AddShape(SkPath* path, const SkRect& rect, Shapes shape, SkPath::Direction dir) {
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switch (shape) {
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case kRect_Shape:
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path->addRect(rect, dir);
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break;
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case kRRect_Shape: {
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SkRRect rr;
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rr.setRectXY(rect, 5, 5);
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path->addRRect(rr, dir);
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break;
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}
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case kOval_Shape:
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path->addOval(rect, dir);
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break;
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default:
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break;
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}
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}
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void onDraw(SkCanvas* canvas) override {
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SkPaint shapePaint;
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shapePaint.setColor(SK_ColorBLACK);
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shapePaint.setAntiAlias(fDoAA);
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SkRect outerRect = SkRect::MakeWH(40, 40);
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SkRect innerRects[] = {
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{ 10, 10, 30, 30 }, // small
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{ .5f, 18, 4.5f, 22 } // smaller and offset to left
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};
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// draw a background pattern to make transparency errors more apparent
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SkRandom rand;
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for (int y = 0; y < kImageHeight; y += 10) {
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for (int x = 0; x < kImageWidth; x += 10) {
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SkRect r = SkRect::MakeXYWH(SkIntToScalar(x),
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SkIntToScalar(y),
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10, 10);
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SkPaint p;
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p.setColor(rand.nextU() | 0xFF000000);
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canvas->drawRect(r, p);
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}
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}
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SkScalar xOff = 2, yOff = 2;
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for (int outerShape = 0; outerShape < kShapeCount; ++outerShape) {
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for (int innerShape = 0; innerShape < kShapeCount; ++innerShape) {
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for (size_t innerRect = 0; innerRect < SK_ARRAY_COUNT(innerRects); ++innerRect) {
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SkPath path;
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AddShape(&path, outerRect, (Shapes) outerShape, SkPath::kCW_Direction);
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AddShape(&path, innerRects[innerRect], (Shapes) innerShape,
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SkPath::kCCW_Direction);
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canvas->save();
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if (fFlipped) {
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canvas->scale(1.0f, -1.0f);
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canvas->translate(xOff, -yOff - 40.0f);
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} else {
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canvas->translate(xOff, yOff);
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}
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canvas->drawPath(path, shapePaint);
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canvas->restore();
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xOff += 45;
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}
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}
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xOff = 2;
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yOff += 45;
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}
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}
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private:
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static constexpr int kImageWidth = 269;
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static constexpr int kImageHeight = 134;
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bool fDoAA;
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bool fFlipped;
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typedef GM INHERITED;
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};
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///////////////////////////////////////////////////////////////////////////////
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DEF_GM( return new NestedGM(/* doAA = */ true, /* flipped = */ false); )
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DEF_GM( return new NestedGM(/* doAA = */ false, /* flipped = */ false); )
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DEF_GM( return new NestedGM(/* doAA = */ true, /* flipped = */ true); )
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DEF_GM( return new NestedGM(/* doAA = */ false, /* flipped = */ true); )
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}
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