121 lines
3.8 KiB
C++
121 lines
3.8 KiB
C++
/*
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* Copyright 2016 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/gm.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkMatrix.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkPath.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkScalar.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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#include "include/gpu/GrContextOptions.h"
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#include "include/private/GrTypesPriv.h"
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#include "include/private/SkTArray.h"
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/** This tests the GPU backend's caching of path coverage masks */
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class PathMaskCache : public skiagm::GM {
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public:
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PathMaskCache() {}
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protected:
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SkString onShortName() override { return SkString("path_mask_cache"); }
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SkISize onISize() override {
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return SkISize::Make(650, 950);
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}
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void onDraw(SkCanvas* canvas) override {
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static constexpr SkScalar kPad = 5.f;
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SkPaint paint;
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paint.setAntiAlias(true);
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auto drawPathSet = [canvas] (const SkPath& path, const SkMatrix& m) {
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SkPaint paint;
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paint.setAntiAlias(true);
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SkRect bounds = path.getBounds();
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m.mapRect(&bounds);
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bounds.roundOut();
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canvas->save();
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canvas->translate(-bounds.fLeft, -bounds.fTop);
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canvas->save();
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canvas->concat(m);
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canvas->drawPath(path, paint);
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canvas->restore();
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// translate by integer
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canvas->translate(bounds.width() + kPad, 0.f);
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canvas->save();
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canvas->concat(m);
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canvas->drawPath(path, paint);
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canvas->restore();
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// translate by non-integer
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canvas->translate(bounds.width() + kPad + 0.15f, 0.f);
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canvas->save();
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canvas->concat(m);
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canvas->drawPath(path, paint);
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canvas->restore();
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// translate again so total translate fraction is almost identical to previous.
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canvas->translate(bounds.width() + kPad + 0.002f, 0.f);
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canvas->save();
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canvas->concat(m);
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canvas->drawPath(path, paint);
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canvas->restore();
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canvas->restore();
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return bounds.fBottom + kPad;
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};
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SkTArray<SkPath> paths;
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paths.push_back();
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paths.back().moveTo(0.f, 0.f);
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paths.back().lineTo(98.f, 100.f);
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paths.back().lineTo(100.f, 100.f);
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paths.back().conicTo(150.f, 50.f, 100.f, 0.f, 0.6f);
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paths.back().conicTo(148.f, 50.f, 100.f, 100.f, 0.6f);
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paths.back().conicTo(50.f, 30.f, 0.f, 100.f, 0.9f);
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paths.push_back();
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paths.back().addCircle(30.f, 30.f, 30.f);
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paths.back().addRect(SkRect::MakeXYWH(45.f, 45.f, 50.f, 60.f));
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paths.back().setFillType(SkPathFillType::kEvenOdd);
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canvas->translate(kPad, kPad);
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for (const SkPath& path : paths) {
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SkScalar ty = drawPathSet(path, SkMatrix::I());
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canvas->translate(0, ty);
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// Non-uniform scale.
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SkMatrix s;
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s.setScale(0.5f, 2.f);
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ty = drawPathSet(path, s);
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canvas->translate(0.f, ty);
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// Rotation
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SkMatrix r;
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r.setRotate(60.f, path.getBounds().centerX(), path.getBounds().centerY());
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ty = drawPathSet(path, r);
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canvas->translate(0.f, ty);
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}
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}
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void modifyGrContextOptions(GrContextOptions* options) override {
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options->fGpuPathRenderers = GpuPathRenderers::kNone;
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options->fAllowPathMaskCaching = true;
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}
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private:
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using INHERITED = GM;
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};
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DEF_GM( return new PathMaskCache(); )
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