1 /*
2 * Copyright 2013 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 "SkTypes.h"
9
10 #include "GrContext.h"
11 #include "GrPath.h"
12 #include "GrShape.h"
13 #include "SkBitmap.h"
14 #include "SkCanvas.h"
15 #include "SkColor.h"
16 #include "SkPaint.h"
17 #include "SkPath.h"
18 #include "SkDashPathEffect.h"
19 #include "SkRRect.h"
20 #include "SkRect.h"
21 #include "SkSurface.h"
22 #include "Test.h"
23
24 #include <initializer_list>
25
test_drawPathEmpty(skiatest::Reporter *,SkCanvas * canvas)26 static void test_drawPathEmpty(skiatest::Reporter*, SkCanvas* canvas) {
27 // Filling an empty path should not crash.
28 SkPaint paint;
29 SkRect emptyRect = SkRect::MakeEmpty();
30 canvas->drawRect(emptyRect, paint);
31 canvas->drawPath(SkPath(), paint);
32 canvas->drawOval(emptyRect, paint);
33 canvas->drawRect(emptyRect, paint);
34 canvas->drawRRect(SkRRect::MakeRect(emptyRect), paint);
35
36 // Stroking an empty path should not crash.
37 paint.setAntiAlias(true);
38 paint.setStyle(SkPaint::kStroke_Style);
39 paint.setColor(SK_ColorGRAY);
40 paint.setStrokeWidth(SkIntToScalar(20));
41 paint.setStrokeJoin(SkPaint::kRound_Join);
42 canvas->drawRect(emptyRect, paint);
43 canvas->drawPath(SkPath(), paint);
44 canvas->drawOval(emptyRect, paint);
45 canvas->drawRect(emptyRect, paint);
46 canvas->drawRRect(SkRRect::MakeRect(emptyRect), paint);
47 }
48
fill_and_stroke(SkCanvas * canvas,const SkPath & p1,const SkPath & p2,sk_sp<SkPathEffect> effect)49 static void fill_and_stroke(SkCanvas* canvas, const SkPath& p1, const SkPath& p2,
50 sk_sp<SkPathEffect> effect) {
51 SkPaint paint;
52 paint.setAntiAlias(true);
53 paint.setPathEffect(effect);
54
55 canvas->drawPath(p1, paint);
56 canvas->drawPath(p2, paint);
57
58 paint.setStyle(SkPaint::kStroke_Style);
59 canvas->drawPath(p1, paint);
60 canvas->drawPath(p2, paint);
61 }
62
test_drawSameRectOvals(skiatest::Reporter *,SkCanvas * canvas)63 static void test_drawSameRectOvals(skiatest::Reporter*, SkCanvas* canvas) {
64 // Drawing ovals with similar bounds but different points order should not crash.
65
66 SkPath oval1, oval2;
67 const SkRect rect = SkRect::MakeWH(100, 50);
68 oval1.addOval(rect, SkPath::kCW_Direction);
69 oval2.addOval(rect, SkPath::kCCW_Direction);
70
71 fill_and_stroke(canvas, oval1, oval2, nullptr);
72
73 const SkScalar intervals[] = { 1, 1 };
74 fill_and_stroke(canvas, oval1, oval2, SkDashPathEffect::Make(intervals, 2, 0));
75 }
76
DEF_GPUTEST_FOR_ALL_GL_CONTEXTS(GpuDrawPath,reporter,ctxInfo)77 DEF_GPUTEST_FOR_ALL_GL_CONTEXTS(GpuDrawPath, reporter, ctxInfo) {
78 for (auto& test_func : { &test_drawPathEmpty, &test_drawSameRectOvals }) {
79 for (auto& sampleCount : {1, 4, 16}) {
80 SkImageInfo info = SkImageInfo::MakeN32Premul(255, 255);
81 auto surface(
82 SkSurface::MakeRenderTarget(ctxInfo.grContext(), SkBudgeted::kNo, info,
83 sampleCount, nullptr));
84 if (!surface) {
85 continue;
86 }
87 test_func(reporter, surface->getCanvas());
88 }
89 }
90 }
91
92 DEF_GPUTEST(GrPathKeys, reporter, /* options */) {
93 SkPaint strokePaint;
94 strokePaint.setStyle(SkPaint::kStroke_Style);
95 strokePaint.setStrokeWidth(10.f);
96 GrStyle styles[] = {
97 GrStyle::SimpleFill(),
98 GrStyle::SimpleHairline(),
99 GrStyle(strokePaint)
100 };
101
102 for (const GrStyle& style : styles) {
103 // Keys should not ignore conic weights.
104 SkPath path1, path2;
105 SkPoint p0 = SkPoint::Make(100, 0);
106 SkPoint p1 = SkPoint::Make(100, 100);
107
108 path1.conicTo(p0, p1, .5f);
109 path2.conicTo(p0, p1, .7f);
110
111 GrUniqueKey key1, key2;
112 // We expect these small paths to be keyed based on their data.
113 bool isVolatile;
114 GrPath::ComputeKey(GrShape(path1, GrStyle::SimpleFill()), &key1, &isVolatile);
115 REPORTER_ASSERT(reporter, !isVolatile);
116 REPORTER_ASSERT(reporter, key1.isValid());
117 GrPath::ComputeKey(GrShape(path2, GrStyle::SimpleFill()), &key2, &isVolatile);
118 REPORTER_ASSERT(reporter, !isVolatile);
119 REPORTER_ASSERT(reporter, key1.isValid());
120 REPORTER_ASSERT(reporter, key1 != key2);
121 {
122 GrUniqueKey tempKey;
123 path1.setIsVolatile(true);
124 GrPath::ComputeKey(GrShape(path1, style), &key1, &isVolatile);
125 REPORTER_ASSERT(reporter, isVolatile);
126 REPORTER_ASSERT(reporter, !tempKey.isValid());
127 }
128
129 // Ensure that recreating the GrShape doesn't change the key.
130 {
131 GrUniqueKey tempKey;
132 GrPath::ComputeKey(GrShape(path2, GrStyle::SimpleFill()), &tempKey, &isVolatile);
133 REPORTER_ASSERT(reporter, key2 == tempKey);
134 }
135
136 // Try a large path that is too big to be keyed off its data.
137 SkPath path3;
138 SkPath path4;
139 for (int i = 0; i < 1000; ++i) {
140 SkScalar s = SkIntToScalar(i);
141 path3.conicTo(s, 3.f * s / 4, s + 1.f, s, 0.5f + s / 2000.f);
142 path4.conicTo(s, 3.f * s / 4, s + 1.f, s, 0.3f + s / 2000.f);
143 }
144
145 GrUniqueKey key3, key4;
146 // These aren't marked volatile and so should have keys
147 GrPath::ComputeKey(GrShape(path3, style), &key3, &isVolatile);
148 REPORTER_ASSERT(reporter, !isVolatile);
149 REPORTER_ASSERT(reporter, key3.isValid());
150 GrPath::ComputeKey(GrShape(path4, style), &key4, &isVolatile);
151 REPORTER_ASSERT(reporter, !isVolatile);
152 REPORTER_ASSERT(reporter, key4.isValid());
153 REPORTER_ASSERT(reporter, key3 != key4);
154
155 {
156 GrUniqueKey tempKey;
157 path3.setIsVolatile(true);
158 GrPath::ComputeKey(GrShape(path3, style), &key1, &isVolatile);
159 REPORTER_ASSERT(reporter, isVolatile);
160 REPORTER_ASSERT(reporter, !tempKey.isValid());
161 }
162 }
163 }
164