blob: 400c5df9d1f6b67038241125b0de441b755b1282 [file] [log] [blame]
bsalomon39ef7fb2016-09-21 11:16:05 -07001/*
2 * Copyright 2016 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#include "gm.h"
9
10#if SK_SUPPORT_GPU
11
12#include "GrContext.h"
13#include "GrContextOptions.h"
14#include "SkPath.h"
15
16/** This tests the GPU backend's caching of path coverage masks */
17class PathMaskCache : public skiagm::GM {
18public:
19 PathMaskCache() {}
20
21protected:
22 SkString onShortName() override { return SkString("path_mask_cache"); }
23
24 SkISize onISize() override {
25 return SkISize::Make(650, 950);
26 }
27
28 void onDraw(SkCanvas* canvas) override {
29 static constexpr SkScalar kPad = 5.f;
30
31 SkPaint paint;
32 paint.setAntiAlias(true);
33 auto drawPathSet = [canvas] (const SkPath& path, const SkMatrix& m) {
34 SkPaint paint;
35 paint.setAntiAlias(true);
36 SkRect bounds = path.getBounds();
37 m.mapRect(&bounds);
38 bounds.roundOut();
39 canvas->save();
40 canvas->translate(-bounds.fLeft, -bounds.fTop);
41
42 canvas->save();
43 canvas->concat(m);
44 canvas->drawPath(path, paint);
45 canvas->restore();
46
47 // translate by integer
48 canvas->translate(bounds.width() + kPad, 0.f);
49 canvas->save();
50 canvas->concat(m);
51 canvas->drawPath(path, paint);
52 canvas->restore();
53
54 // translate by non-integer
55 canvas->translate(bounds.width() + kPad + 0.15f, 0.f);
56 canvas->save();
57 canvas->concat(m);
58 canvas->drawPath(path, paint);
59 canvas->restore();
60
61 // translate again so total translate fraction is almost identical to previous.
62 canvas->translate(bounds.width() + kPad + 0.002f, 0.f);
63 canvas->save();
64 canvas->concat(m);
65 canvas->drawPath(path, paint);
66 canvas->restore();
67 canvas->restore();
68 return bounds.fBottom + kPad;
69 };
70
71
72 SkTArray<SkPath> paths;
73 paths.push_back();
74 paths.back().moveTo(0.f, 0.f);
75 paths.back().lineTo(98.f, 100.f);
76 paths.back().lineTo(100.f, 100.f);
77 paths.back().conicTo(150.f, 50.f, 100.f, 0.f, 0.6f);
78 paths.back().conicTo(148.f, 50.f, 100.f, 100.f, 0.6f);
79 paths.back().conicTo(50.f, 30.f, 0.f, 100.f, 0.9f);
80
81 paths.push_back();
82 paths.back().addCircle(30.f, 30.f, 30.f);
83 paths.back().addRect(SkRect::MakeXYWH(45.f, 45.f, 50.f, 60.f));
84 paths.back().setFillType(SkPath::kEvenOdd_FillType);
85
86 canvas->translate(kPad, kPad);
87
88 for (const SkPath& path : paths) {
89 SkScalar ty = drawPathSet(path, SkMatrix::I());
90 canvas->translate(0, ty);
91
92 // Non-uniform scale.
93 SkMatrix s;
94 s.setScale(0.5f, 2.f);
95 ty = drawPathSet(path, s);
96 canvas->translate(0.f, ty);
97
98 // Rotation
99 SkMatrix r;
100 r.setRotate(60.f, path.getBounds().centerX(), path.getBounds().centerY());
101 ty = drawPathSet(path, r);
102 canvas->translate(0.f, ty);
103 }
104 }
105
106 void modifyGrContextOptions(GrContextOptions* options) override {
Brian Osman195c05b2017-08-30 15:14:04 -0400107 options->fGpuPathRenderers = GpuPathRenderers::kNone;
bsalomon39ef7fb2016-09-21 11:16:05 -0700108 options->fAllowPathMaskCaching = true;
109 }
110
111private:
112 typedef GM INHERITED;
113};
114
115DEF_GM( return new PathMaskCache(); )
116
117#endif