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 #if SK_SUPPORT_GPU
11
12 #include "GrContext.h"
13 #include "GrPath.h"
14 #include "GrShape.h"
15 #include "SkBitmap.h"
16 #include "SkCanvas.h"
17 #include "SkColor.h"
18 #include "SkPaint.h"
19 #include "SkPath.h"
20 #include "SkDashPathEffect.h"
21 #include "SkRRect.h"
22 #include "SkRect.h"
23 #include "SkSurface.h"
24 #include "Test.h"
25
26 #include <initializer_list>
27
test_drawPathEmpty(skiatest::Reporter *,SkCanvas * canvas)28 static void test_drawPathEmpty(skiatest::Reporter*, SkCanvas* canvas) {
29 // Filling an empty path should not crash.
30 SkPaint paint;
31 SkRect emptyRect = SkRect::MakeEmpty();
32 canvas->drawRect(emptyRect, paint);
33 canvas->drawPath(SkPath(), paint);
34 canvas->drawOval(emptyRect, paint);
35 canvas->drawRect(emptyRect, paint);
36 canvas->drawRRect(SkRRect::MakeRect(emptyRect), paint);
37
38 // Stroking an empty path should not crash.
39 paint.setAntiAlias(true);
40 paint.setStyle(SkPaint::kStroke_Style);
41 paint.setColor(SK_ColorGRAY);
42 paint.setStrokeWidth(SkIntToScalar(20));
43 paint.setStrokeJoin(SkPaint::kRound_Join);
44 canvas->drawRect(emptyRect, paint);
45 canvas->drawPath(SkPath(), paint);
46 canvas->drawOval(emptyRect, paint);
47 canvas->drawRect(emptyRect, paint);
48 canvas->drawRRect(SkRRect::MakeRect(emptyRect), paint);
49 }
50
fill_and_stroke(SkCanvas * canvas,const SkPath & p1,const SkPath & p2,sk_sp<SkPathEffect> effect)51 static void fill_and_stroke(SkCanvas* canvas, const SkPath& p1, const SkPath& p2,
52 sk_sp<SkPathEffect> effect) {
53 SkPaint paint;
54 paint.setAntiAlias(true);
55 paint.setPathEffect(effect);
56
57 canvas->drawPath(p1, paint);
58 canvas->drawPath(p2, paint);
59
60 paint.setStyle(SkPaint::kStroke_Style);
61 canvas->drawPath(p1, paint);
62 canvas->drawPath(p2, paint);
63 }
64
test_drawSameRectOvals(skiatest::Reporter *,SkCanvas * canvas)65 static void test_drawSameRectOvals(skiatest::Reporter*, SkCanvas* canvas) {
66 // Drawing ovals with similar bounds but different points order should not crash.
67
68 SkPath oval1, oval2;
69 const SkRect rect = SkRect::MakeWH(100, 50);
70 oval1.addOval(rect, SkPath::kCW_Direction);
71 oval2.addOval(rect, SkPath::kCCW_Direction);
72
73 fill_and_stroke(canvas, oval1, oval2, nullptr);
74
75 const SkScalar intervals[] = { 1, 1 };
76 fill_and_stroke(canvas, oval1, oval2, SkDashPathEffect::Make(intervals, 2, 0));
77 }
78
DEF_GPUTEST_FOR_ALL_GL_CONTEXTS(GpuDrawPath,reporter,ctxInfo)79 DEF_GPUTEST_FOR_ALL_GL_CONTEXTS(GpuDrawPath, reporter, ctxInfo) {
80 for (auto& test_func : { &test_drawPathEmpty, &test_drawSameRectOvals }) {
81 for (auto& sampleCount : {0, 4, 16}) {
82 SkImageInfo info = SkImageInfo::MakeN32Premul(255, 255);
83 auto surface(
84 SkSurface::MakeRenderTarget(ctxInfo.grContext(), SkBudgeted::kNo, info,
85 sampleCount, nullptr));
86 if (!surface) {
87 continue;
88 }
89 test_func(reporter, surface->getCanvas());
90 }
91 }
92 }
93
94 DEF_GPUTEST(GrPathKeys, reporter, /*factory*/) {
95 SkPaint strokePaint;
96 strokePaint.setStyle(SkPaint::kStroke_Style);
97 strokePaint.setStrokeWidth(10.f);
98 GrStyle styles[] = {
99 GrStyle::SimpleFill(),
100 GrStyle::SimpleHairline(),
101 GrStyle(strokePaint)
102 };
103
104 for (const GrStyle& style : styles) {
105 // Keys should not ignore conic weights.
106 SkPath path1, path2;
107 SkPoint p0 = SkPoint::Make(100, 0);
108 SkPoint p1 = SkPoint::Make(100, 100);
109
110 path1.conicTo(p0, p1, .5f);
111 path2.conicTo(p0, p1, .7f);
112
113 GrUniqueKey key1, key2;
114 // We expect these small paths to be keyed based on their data.
115 bool isVolatile;
116 GrPath::ComputeKey(GrShape(path1, GrStyle::SimpleFill()), &key1, &isVolatile);
117 REPORTER_ASSERT(reporter, !isVolatile);
118 REPORTER_ASSERT(reporter, key1.isValid());
119 GrPath::ComputeKey(GrShape(path2, GrStyle::SimpleFill()), &key2, &isVolatile);
120 REPORTER_ASSERT(reporter, !isVolatile);
121 REPORTER_ASSERT(reporter, key1.isValid());
122 REPORTER_ASSERT(reporter, key1 != key2);
123 {
124 GrUniqueKey tempKey;
125 path1.setIsVolatile(true);
126 GrPath::ComputeKey(GrShape(path1, style), &key1, &isVolatile);
127 REPORTER_ASSERT(reporter, isVolatile);
128 REPORTER_ASSERT(reporter, !tempKey.isValid());
129 }
130
131 // Ensure that recreating the GrShape doesn't change the key.
132 {
133 GrUniqueKey tempKey;
134 GrPath::ComputeKey(GrShape(path2, GrStyle::SimpleFill()), &tempKey, &isVolatile);
135 REPORTER_ASSERT(reporter, key2 == tempKey);
136 }
137
138 // Try a large path that is too big to be keyed off its data.
139 SkPath path3;
140 SkPath path4;
141 for (int i = 0; i < 1000; ++i) {
142 SkScalar s = SkIntToScalar(i);
143 path3.conicTo(s, 3.f * s / 4, s + 1.f, s, 0.5f + s / 2000.f);
144 path4.conicTo(s, 3.f * s / 4, s + 1.f, s, 0.3f + s / 2000.f);
145 }
146
147 GrUniqueKey key3, key4;
148 // These aren't marked volatile and so should have keys
149 GrPath::ComputeKey(GrShape(path3, style), &key3, &isVolatile);
150 REPORTER_ASSERT(reporter, !isVolatile);
151 REPORTER_ASSERT(reporter, key3.isValid());
152 GrPath::ComputeKey(GrShape(path4, style), &key4, &isVolatile);
153 REPORTER_ASSERT(reporter, !isVolatile);
154 REPORTER_ASSERT(reporter, key4.isValid());
155 REPORTER_ASSERT(reporter, key3 != key4);
156
157 {
158 GrUniqueKey tempKey;
159 path3.setIsVolatile(true);
160 GrPath::ComputeKey(GrShape(path3, style), &key1, &isVolatile);
161 REPORTER_ASSERT(reporter, isVolatile);
162 REPORTER_ASSERT(reporter, !tempKey.isValid());
163 }
164 }
165 }
166
167 #endif
168