xref: /aosp_15_r20/external/skia/tests/DrawPathTest.cpp (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
1*c8dee2aaSAndroid Build Coastguard Worker /*
2*c8dee2aaSAndroid Build Coastguard Worker  * Copyright 2012 Google Inc.
3*c8dee2aaSAndroid Build Coastguard Worker  *
4*c8dee2aaSAndroid Build Coastguard Worker  * Use of this source code is governed by a BSD-style license that can be
5*c8dee2aaSAndroid Build Coastguard Worker  * found in the LICENSE file.
6*c8dee2aaSAndroid Build Coastguard Worker  */
7*c8dee2aaSAndroid Build Coastguard Worker 
8*c8dee2aaSAndroid Build Coastguard Worker #include "include/core/SkBitmap.h"
9*c8dee2aaSAndroid Build Coastguard Worker #include "include/core/SkCanvas.h"
10*c8dee2aaSAndroid Build Coastguard Worker #include "include/core/SkColor.h"
11*c8dee2aaSAndroid Build Coastguard Worker #include "include/core/SkImageInfo.h"
12*c8dee2aaSAndroid Build Coastguard Worker #include "include/core/SkMatrix.h"
13*c8dee2aaSAndroid Build Coastguard Worker #include "include/core/SkPaint.h"
14*c8dee2aaSAndroid Build Coastguard Worker #include "include/core/SkPath.h"
15*c8dee2aaSAndroid Build Coastguard Worker #include "include/core/SkPathEffect.h"
16*c8dee2aaSAndroid Build Coastguard Worker #include "include/core/SkPathTypes.h"
17*c8dee2aaSAndroid Build Coastguard Worker #include "include/core/SkPathUtils.h"
18*c8dee2aaSAndroid Build Coastguard Worker #include "include/core/SkPoint.h"
19*c8dee2aaSAndroid Build Coastguard Worker #include "include/core/SkRRect.h"
20*c8dee2aaSAndroid Build Coastguard Worker #include "include/core/SkRect.h"
21*c8dee2aaSAndroid Build Coastguard Worker #include "include/core/SkRefCnt.h"
22*c8dee2aaSAndroid Build Coastguard Worker #include "include/core/SkScalar.h"
23*c8dee2aaSAndroid Build Coastguard Worker #include "include/core/SkStrokeRec.h"
24*c8dee2aaSAndroid Build Coastguard Worker #include "include/core/SkSurface.h"
25*c8dee2aaSAndroid Build Coastguard Worker #include "include/core/SkTypes.h"
26*c8dee2aaSAndroid Build Coastguard Worker #include "include/effects/SkDashPathEffect.h"
27*c8dee2aaSAndroid Build Coastguard Worker #include "tests/Test.h"
28*c8dee2aaSAndroid Build Coastguard Worker 
29*c8dee2aaSAndroid Build Coastguard Worker #include <cstdint>
30*c8dee2aaSAndroid Build Coastguard Worker 
31*c8dee2aaSAndroid Build Coastguard Worker // test that we can draw an aa-rect at coordinates > 32K (bigger than fixedpoint)
test_big_aa_rect(skiatest::Reporter * reporter)32*c8dee2aaSAndroid Build Coastguard Worker static void test_big_aa_rect(skiatest::Reporter* reporter) {
33*c8dee2aaSAndroid Build Coastguard Worker     SkBitmap output;
34*c8dee2aaSAndroid Build Coastguard Worker     SkPMColor pixel[1];
35*c8dee2aaSAndroid Build Coastguard Worker     output.installPixels(SkImageInfo::MakeN32Premul(1, 1), pixel, 4);
36*c8dee2aaSAndroid Build Coastguard Worker 
37*c8dee2aaSAndroid Build Coastguard Worker     auto surf = SkSurfaces::Raster(SkImageInfo::MakeN32Premul(300, 33300));
38*c8dee2aaSAndroid Build Coastguard Worker     SkCanvas* canvas = surf->getCanvas();
39*c8dee2aaSAndroid Build Coastguard Worker 
40*c8dee2aaSAndroid Build Coastguard Worker     SkRect r = { 0, 33000, 300, 33300 };
41*c8dee2aaSAndroid Build Coastguard Worker     int x = SkScalarRoundToInt(r.left());
42*c8dee2aaSAndroid Build Coastguard Worker     int y = SkScalarRoundToInt(r.top());
43*c8dee2aaSAndroid Build Coastguard Worker 
44*c8dee2aaSAndroid Build Coastguard Worker     // check that the pixel in question starts as transparent (by the surface)
45*c8dee2aaSAndroid Build Coastguard Worker     if (surf->readPixels(output, x, y)) {
46*c8dee2aaSAndroid Build Coastguard Worker         REPORTER_ASSERT(reporter, 0 == pixel[0]);
47*c8dee2aaSAndroid Build Coastguard Worker     } else {
48*c8dee2aaSAndroid Build Coastguard Worker         REPORTER_ASSERT(reporter, false, "readPixels failed");
49*c8dee2aaSAndroid Build Coastguard Worker     }
50*c8dee2aaSAndroid Build Coastguard Worker 
51*c8dee2aaSAndroid Build Coastguard Worker     SkPaint paint;
52*c8dee2aaSAndroid Build Coastguard Worker     paint.setAntiAlias(true);
53*c8dee2aaSAndroid Build Coastguard Worker     paint.setColor(SK_ColorWHITE);
54*c8dee2aaSAndroid Build Coastguard Worker 
55*c8dee2aaSAndroid Build Coastguard Worker     canvas->drawRect(r, paint);
56*c8dee2aaSAndroid Build Coastguard Worker 
57*c8dee2aaSAndroid Build Coastguard Worker     // Now check that it is BLACK
58*c8dee2aaSAndroid Build Coastguard Worker     if (surf->readPixels(output, x, y)) {
59*c8dee2aaSAndroid Build Coastguard Worker         // don't know what swizzling PMColor did, but white should always
60*c8dee2aaSAndroid Build Coastguard Worker         // appear the same.
61*c8dee2aaSAndroid Build Coastguard Worker         REPORTER_ASSERT(reporter, 0xFFFFFFFF == pixel[0]);
62*c8dee2aaSAndroid Build Coastguard Worker     } else {
63*c8dee2aaSAndroid Build Coastguard Worker         REPORTER_ASSERT(reporter, false, "readPixels failed");
64*c8dee2aaSAndroid Build Coastguard Worker     }
65*c8dee2aaSAndroid Build Coastguard Worker }
66*c8dee2aaSAndroid Build Coastguard Worker 
67*c8dee2aaSAndroid Build Coastguard Worker ///////////////////////////////////////////////////////////////////////////////
68*c8dee2aaSAndroid Build Coastguard Worker 
moveToH(SkPath * path,const uint32_t raw[])69*c8dee2aaSAndroid Build Coastguard Worker static void moveToH(SkPath* path, const uint32_t raw[]) {
70*c8dee2aaSAndroid Build Coastguard Worker     const float* fptr = (const float*)raw;
71*c8dee2aaSAndroid Build Coastguard Worker     path->moveTo(fptr[0], fptr[1]);
72*c8dee2aaSAndroid Build Coastguard Worker }
73*c8dee2aaSAndroid Build Coastguard Worker 
cubicToH(SkPath * path,const uint32_t raw[])74*c8dee2aaSAndroid Build Coastguard Worker static void cubicToH(SkPath* path, const uint32_t raw[]) {
75*c8dee2aaSAndroid Build Coastguard Worker     const float* fptr = (const float*)raw;
76*c8dee2aaSAndroid Build Coastguard Worker     path->cubicTo(fptr[0], fptr[1], fptr[2], fptr[3], fptr[4], fptr[5]);
77*c8dee2aaSAndroid Build Coastguard Worker }
78*c8dee2aaSAndroid Build Coastguard Worker 
79*c8dee2aaSAndroid Build Coastguard Worker // This used to assert, because we performed a cast (int)(pt[0].fX * scale) to
80*c8dee2aaSAndroid Build Coastguard Worker // arrive at an int (SkFDot6) rather than calling sk_float_round2int. The assert
81*c8dee2aaSAndroid Build Coastguard Worker // was that the initial line-segment produced by the cubic was not monotonically
82*c8dee2aaSAndroid Build Coastguard Worker // going down (i.e. the initial DY was negative). By rounding the floats, we get
83*c8dee2aaSAndroid Build Coastguard Worker // the more proper result.
84*c8dee2aaSAndroid Build Coastguard Worker //
85*c8dee2aaSAndroid Build Coastguard Worker // http://code.google.com/p/chromium/issues/detail?id=131181
86*c8dee2aaSAndroid Build Coastguard Worker //
87*c8dee2aaSAndroid Build Coastguard Worker 
88*c8dee2aaSAndroid Build Coastguard Worker // we're not calling this test anymore; is that for a reason?
89*c8dee2aaSAndroid Build Coastguard Worker 
test_crbug131181()90*c8dee2aaSAndroid Build Coastguard Worker static void test_crbug131181() {
91*c8dee2aaSAndroid Build Coastguard Worker     /*
92*c8dee2aaSAndroid Build Coastguard Worker      fX = 18.8943768,
93*c8dee2aaSAndroid Build Coastguard Worker      fY = 129.121277
94*c8dee2aaSAndroid Build Coastguard Worker      }, {
95*c8dee2aaSAndroid Build Coastguard Worker      fX = 18.8937435,
96*c8dee2aaSAndroid Build Coastguard Worker      fY = 129.121689
97*c8dee2aaSAndroid Build Coastguard Worker      }, {
98*c8dee2aaSAndroid Build Coastguard Worker      fX = 18.8950119,
99*c8dee2aaSAndroid Build Coastguard Worker      fY = 129.120422
100*c8dee2aaSAndroid Build Coastguard Worker      }, {
101*c8dee2aaSAndroid Build Coastguard Worker      fX = 18.5030727,
102*c8dee2aaSAndroid Build Coastguard Worker      fY = 129.13121
103*c8dee2aaSAndroid Build Coastguard Worker      */
104*c8dee2aaSAndroid Build Coastguard Worker     uint32_t data[] = {
105*c8dee2aaSAndroid Build Coastguard Worker         0x419727af, 0x43011f0c, 0x41972663, 0x43011f27,
106*c8dee2aaSAndroid Build Coastguard Worker         0x419728fc, 0x43011ed4, 0x4194064b, 0x43012197
107*c8dee2aaSAndroid Build Coastguard Worker     };
108*c8dee2aaSAndroid Build Coastguard Worker 
109*c8dee2aaSAndroid Build Coastguard Worker     SkPath path;
110*c8dee2aaSAndroid Build Coastguard Worker     moveToH(&path, &data[0]);
111*c8dee2aaSAndroid Build Coastguard Worker     cubicToH(&path, &data[2]);
112*c8dee2aaSAndroid Build Coastguard Worker 
113*c8dee2aaSAndroid Build Coastguard Worker     auto surface(SkSurfaces::Raster(SkImageInfo::MakeN32Premul(640, 480)));
114*c8dee2aaSAndroid Build Coastguard Worker 
115*c8dee2aaSAndroid Build Coastguard Worker     SkPaint paint;
116*c8dee2aaSAndroid Build Coastguard Worker     paint.setAntiAlias(true);
117*c8dee2aaSAndroid Build Coastguard Worker     surface->getCanvas()->drawPath(path, paint);
118*c8dee2aaSAndroid Build Coastguard Worker }
119*c8dee2aaSAndroid Build Coastguard Worker 
120*c8dee2aaSAndroid Build Coastguard Worker // This used to assert in debug builds (and crash writing bad memory in release)
121*c8dee2aaSAndroid Build Coastguard Worker // because we overflowed an intermediate value (B coefficient) setting up our
122*c8dee2aaSAndroid Build Coastguard Worker // stepper for the quadratic. Now we bias that value by 1/2 so we don't overflow
test_crbug_140803()123*c8dee2aaSAndroid Build Coastguard Worker static void test_crbug_140803() {
124*c8dee2aaSAndroid Build Coastguard Worker     SkBitmap bm;
125*c8dee2aaSAndroid Build Coastguard Worker     bm.allocN32Pixels(2700, 30*1024);
126*c8dee2aaSAndroid Build Coastguard Worker     SkCanvas canvas(bm);
127*c8dee2aaSAndroid Build Coastguard Worker 
128*c8dee2aaSAndroid Build Coastguard Worker     SkPaint paint;
129*c8dee2aaSAndroid Build Coastguard Worker     paint.setAntiAlias(true);
130*c8dee2aaSAndroid Build Coastguard Worker     canvas.drawPath(SkPath().moveTo(2762, 20).quadTo(11, 21702, 10, 21706), paint);
131*c8dee2aaSAndroid Build Coastguard Worker }
132*c8dee2aaSAndroid Build Coastguard Worker 
test_crbug_1239558(skiatest::Reporter * reporter)133*c8dee2aaSAndroid Build Coastguard Worker static void test_crbug_1239558(skiatest::Reporter* reporter) {
134*c8dee2aaSAndroid Build Coastguard Worker     SkBitmap bm;
135*c8dee2aaSAndroid Build Coastguard Worker     bm.allocN32Pixels(256, 256);
136*c8dee2aaSAndroid Build Coastguard Worker 
137*c8dee2aaSAndroid Build Coastguard Worker     SkCanvas canvas(bm);
138*c8dee2aaSAndroid Build Coastguard Worker     canvas.clear(SK_ColorWHITE);
139*c8dee2aaSAndroid Build Coastguard Worker 
140*c8dee2aaSAndroid Build Coastguard Worker     // This creates a single cubic where the control points form an extremely skinny, vertical
141*c8dee2aaSAndroid Build Coastguard Worker     // triangle contained within the x=0 column of pixels. Since it is convex (ignoring the leading
142*c8dee2aaSAndroid Build Coastguard Worker     // moveTo's) it uses the convex aaa optimized edge walking algorithm after clipping the path to
143*c8dee2aaSAndroid Build Coastguard Worker     // the device bounds. However, due to fixed-point math while walking these edges, the edge
144*c8dee2aaSAndroid Build Coastguard Worker     // walking evaluates to coords that are very slightly less than 0 (i.e. 0.0012). Both the left
145*c8dee2aaSAndroid Build Coastguard Worker     // and right edges would be out of bounds, but the edge walking is optimized to only clamp the
146*c8dee2aaSAndroid Build Coastguard Worker     // left edge to the left bounds, and the right edge to the right bounds. After this clamping,
147*c8dee2aaSAndroid Build Coastguard Worker     // the left and right edges are no longer sorted. This then led to incorrect behavior in various
148*c8dee2aaSAndroid Build Coastguard Worker     // forms (described below).
149*c8dee2aaSAndroid Build Coastguard Worker     SkPath path;
150*c8dee2aaSAndroid Build Coastguard Worker     path.setFillType(SkPathFillType::kWinding);
151*c8dee2aaSAndroid Build Coastguard Worker     path.moveTo(7.00649e-45f,  2.f);
152*c8dee2aaSAndroid Build Coastguard Worker     path.moveTo(0.0160219f,    7.45063e-09f);
153*c8dee2aaSAndroid Build Coastguard Worker     path.moveTo(192.263f,      8.40779e-44f);
154*c8dee2aaSAndroid Build Coastguard Worker     path.moveTo(7.34684e-40f,  194.25f);
155*c8dee2aaSAndroid Build Coastguard Worker     path.moveTo(2.3449e-38f,   6.01858e-36f);
156*c8dee2aaSAndroid Build Coastguard Worker     path.moveTo(7.34684e-40f,  194.25f);
157*c8dee2aaSAndroid Build Coastguard Worker     path.cubicTo(5.07266e-39f, 56.0488f,
158*c8dee2aaSAndroid Build Coastguard Worker                  0.0119172f,   0.f,
159*c8dee2aaSAndroid Build Coastguard Worker                  7.34684e-40f, 194.25f);
160*c8dee2aaSAndroid Build Coastguard Worker 
161*c8dee2aaSAndroid Build Coastguard Worker     SkPaint paint;
162*c8dee2aaSAndroid Build Coastguard Worker     paint.setColor(SK_ColorRED);
163*c8dee2aaSAndroid Build Coastguard Worker     paint.setAntiAlias(true);
164*c8dee2aaSAndroid Build Coastguard Worker     // On debug builds, the inverted left/right edges led to a negative coverage that triggered an
165*c8dee2aaSAndroid Build Coastguard Worker     // assert while converting to a uint8 alpha value. On release builds with UBSAN, it would
166*c8dee2aaSAndroid Build Coastguard Worker     // detect a negative left shift when computing the pixel address and crash. On regular release
167*c8dee2aaSAndroid Build Coastguard Worker     // builds it would write a saturate coverage value to pixels that wrapped around to the far edge
168*c8dee2aaSAndroid Build Coastguard Worker     canvas.drawPath(path, paint);
169*c8dee2aaSAndroid Build Coastguard Worker 
170*c8dee2aaSAndroid Build Coastguard Worker     // UBSAN and debug builds would fail inside the drawPath() call above, but detect the incorrect
171*c8dee2aaSAndroid Build Coastguard Worker     // memory access on release builds so that the test would fail. Given the path, it should only
172*c8dee2aaSAndroid Build Coastguard Worker     // touch pixels with x=0 but the incorrect addressing would wrap to the right edge.
173*c8dee2aaSAndroid Build Coastguard Worker     for (int y = 0; y < 256; ++y) {
174*c8dee2aaSAndroid Build Coastguard Worker         if (bm.getColor(255, y) != SK_ColorWHITE) {
175*c8dee2aaSAndroid Build Coastguard Worker             REPORTER_ASSERT(reporter, false, "drawPath modified incorrect pixels");
176*c8dee2aaSAndroid Build Coastguard Worker             break;
177*c8dee2aaSAndroid Build Coastguard Worker         }
178*c8dee2aaSAndroid Build Coastguard Worker     }
179*c8dee2aaSAndroid Build Coastguard Worker }
180*c8dee2aaSAndroid Build Coastguard Worker 
181*c8dee2aaSAndroid Build Coastguard Worker // Need to exercise drawing an inverse-path whose bounds intersect the clip,
182*c8dee2aaSAndroid Build Coastguard Worker // but whose edges do not (since its a quad which draws only in the bottom half
183*c8dee2aaSAndroid Build Coastguard Worker // of its bounds).
184*c8dee2aaSAndroid Build Coastguard Worker // In the debug build, we used to assert in this case, until it was fixed.
185*c8dee2aaSAndroid Build Coastguard Worker //
test_inversepathwithclip()186*c8dee2aaSAndroid Build Coastguard Worker static void test_inversepathwithclip() {
187*c8dee2aaSAndroid Build Coastguard Worker     SkPath path;
188*c8dee2aaSAndroid Build Coastguard Worker 
189*c8dee2aaSAndroid Build Coastguard Worker     path.moveTo(0, 20);
190*c8dee2aaSAndroid Build Coastguard Worker     path.quadTo(10, 10, 20, 20);
191*c8dee2aaSAndroid Build Coastguard Worker     path.toggleInverseFillType();
192*c8dee2aaSAndroid Build Coastguard Worker 
193*c8dee2aaSAndroid Build Coastguard Worker     SkPaint paint;
194*c8dee2aaSAndroid Build Coastguard Worker 
195*c8dee2aaSAndroid Build Coastguard Worker     auto surface(SkSurfaces::Raster(SkImageInfo::MakeN32Premul(640, 480)));
196*c8dee2aaSAndroid Build Coastguard Worker     SkCanvas* canvas = surface->getCanvas();
197*c8dee2aaSAndroid Build Coastguard Worker     canvas->save();
198*c8dee2aaSAndroid Build Coastguard Worker     canvas->clipRect(SkRect::MakeWH(19, 11));
199*c8dee2aaSAndroid Build Coastguard Worker 
200*c8dee2aaSAndroid Build Coastguard Worker     paint.setAntiAlias(false);
201*c8dee2aaSAndroid Build Coastguard Worker     canvas->drawPath(path, paint);
202*c8dee2aaSAndroid Build Coastguard Worker     paint.setAntiAlias(true);
203*c8dee2aaSAndroid Build Coastguard Worker     canvas->drawPath(path, paint);
204*c8dee2aaSAndroid Build Coastguard Worker 
205*c8dee2aaSAndroid Build Coastguard Worker     canvas->restore();
206*c8dee2aaSAndroid Build Coastguard Worker 
207*c8dee2aaSAndroid Build Coastguard Worker     // Now do the test again, with the path flipped, so we only draw in the
208*c8dee2aaSAndroid Build Coastguard Worker     // top half of our bounds, and have the clip intersect our bounds at the
209*c8dee2aaSAndroid Build Coastguard Worker     // bottom.
210*c8dee2aaSAndroid Build Coastguard Worker     path.reset();   // preserves our filltype
211*c8dee2aaSAndroid Build Coastguard Worker     path.moveTo(0, 10);
212*c8dee2aaSAndroid Build Coastguard Worker     path.quadTo(10, 20, 20, 10);
213*c8dee2aaSAndroid Build Coastguard Worker     canvas->clipRect(SkRect::MakeXYWH(0, 19, 19, 11));
214*c8dee2aaSAndroid Build Coastguard Worker 
215*c8dee2aaSAndroid Build Coastguard Worker     paint.setAntiAlias(false);
216*c8dee2aaSAndroid Build Coastguard Worker     canvas->drawPath(path, paint);
217*c8dee2aaSAndroid Build Coastguard Worker     paint.setAntiAlias(true);
218*c8dee2aaSAndroid Build Coastguard Worker     canvas->drawPath(path, paint);
219*c8dee2aaSAndroid Build Coastguard Worker }
220*c8dee2aaSAndroid Build Coastguard Worker 
test_bug533()221*c8dee2aaSAndroid Build Coastguard Worker static void test_bug533() {
222*c8dee2aaSAndroid Build Coastguard Worker     /*
223*c8dee2aaSAndroid Build Coastguard Worker         http://code.google.com/p/skia/issues/detail?id=533
224*c8dee2aaSAndroid Build Coastguard Worker         This particular test/bug only applies to the float case, where the
225*c8dee2aaSAndroid Build Coastguard Worker         coordinates are very large.
226*c8dee2aaSAndroid Build Coastguard Worker      */
227*c8dee2aaSAndroid Build Coastguard Worker     SkPath path;
228*c8dee2aaSAndroid Build Coastguard Worker     path.moveTo(64, 3);
229*c8dee2aaSAndroid Build Coastguard Worker     path.quadTo(-329936, -100000000, 1153, 330003);
230*c8dee2aaSAndroid Build Coastguard Worker 
231*c8dee2aaSAndroid Build Coastguard Worker     SkPaint paint;
232*c8dee2aaSAndroid Build Coastguard Worker     paint.setAntiAlias(true);
233*c8dee2aaSAndroid Build Coastguard Worker 
234*c8dee2aaSAndroid Build Coastguard Worker     auto surface(SkSurfaces::Raster(SkImageInfo::MakeN32Premul(640, 480)));
235*c8dee2aaSAndroid Build Coastguard Worker     surface->getCanvas()->drawPath(path, paint);
236*c8dee2aaSAndroid Build Coastguard Worker }
237*c8dee2aaSAndroid Build Coastguard Worker 
test_crbug_140642()238*c8dee2aaSAndroid Build Coastguard Worker static void test_crbug_140642() {
239*c8dee2aaSAndroid Build Coastguard Worker     /*
240*c8dee2aaSAndroid Build Coastguard Worker      *  We used to see this construct, and due to rounding as we accumulated
241*c8dee2aaSAndroid Build Coastguard Worker      *  our length, the loop where we apply the phase would run off the end of
242*c8dee2aaSAndroid Build Coastguard Worker      *  the array, since it relied on just -= each interval value, which did not
243*c8dee2aaSAndroid Build Coastguard Worker      *  behave as "expected". Now the code explicitly checks for walking off the
244*c8dee2aaSAndroid Build Coastguard Worker      *  end of that array.
245*c8dee2aaSAndroid Build Coastguard Worker 
246*c8dee2aaSAndroid Build Coastguard Worker      *  A different (better) fix might be to rewrite dashing to do all of its
247*c8dee2aaSAndroid Build Coastguard Worker      *  length/phase/measure math using double, but this may need to be
248*c8dee2aaSAndroid Build Coastguard Worker      *  coordinated with SkPathMeasure, to be consistent between the two.
249*c8dee2aaSAndroid Build Coastguard Worker 
250*c8dee2aaSAndroid Build Coastguard Worker      <path stroke="mintcream" stroke-dasharray="27734 35660 2157846850 247"
251*c8dee2aaSAndroid Build Coastguard Worker            stroke-dashoffset="-248.135982067">
252*c8dee2aaSAndroid Build Coastguard Worker      */
253*c8dee2aaSAndroid Build Coastguard Worker 
254*c8dee2aaSAndroid Build Coastguard Worker     const SkScalar vals[] = { 27734, 35660, 2157846850.0f, 247 };
255*c8dee2aaSAndroid Build Coastguard Worker     auto dontAssert = SkDashPathEffect::Make(vals, 4, -248.135982067f);
256*c8dee2aaSAndroid Build Coastguard Worker }
257*c8dee2aaSAndroid Build Coastguard Worker 
test_crbug_124652()258*c8dee2aaSAndroid Build Coastguard Worker static void test_crbug_124652() {
259*c8dee2aaSAndroid Build Coastguard Worker     /*
260*c8dee2aaSAndroid Build Coastguard Worker         http://code.google.com/p/chromium/issues/detail?id=124652
261*c8dee2aaSAndroid Build Coastguard Worker         This particular test/bug only applies to the float case, where
262*c8dee2aaSAndroid Build Coastguard Worker         large values can "swamp" small ones.
263*c8dee2aaSAndroid Build Coastguard Worker      */
264*c8dee2aaSAndroid Build Coastguard Worker     SkScalar intervals[2] = {837099584, 33450};
265*c8dee2aaSAndroid Build Coastguard Worker     auto dontAssert = SkDashPathEffect::Make(intervals, 2, -10);
266*c8dee2aaSAndroid Build Coastguard Worker }
267*c8dee2aaSAndroid Build Coastguard Worker 
test_bigcubic()268*c8dee2aaSAndroid Build Coastguard Worker static void test_bigcubic() {
269*c8dee2aaSAndroid Build Coastguard Worker     SkPath path;
270*c8dee2aaSAndroid Build Coastguard Worker     path.moveTo(64, 3);
271*c8dee2aaSAndroid Build Coastguard Worker     path.cubicTo(-329936, -100000000, -329936, 100000000, 1153, 330003);
272*c8dee2aaSAndroid Build Coastguard Worker 
273*c8dee2aaSAndroid Build Coastguard Worker     SkPaint paint;
274*c8dee2aaSAndroid Build Coastguard Worker     paint.setAntiAlias(true);
275*c8dee2aaSAndroid Build Coastguard Worker 
276*c8dee2aaSAndroid Build Coastguard Worker     auto surface(SkSurfaces::Raster(SkImageInfo::MakeN32Premul(640, 480)));
277*c8dee2aaSAndroid Build Coastguard Worker     surface->getCanvas()->drawPath(path, paint);
278*c8dee2aaSAndroid Build Coastguard Worker }
279*c8dee2aaSAndroid Build Coastguard Worker 
280*c8dee2aaSAndroid Build Coastguard Worker // asserts if halfway case is not handled
test_halfway()281*c8dee2aaSAndroid Build Coastguard Worker static void test_halfway() {
282*c8dee2aaSAndroid Build Coastguard Worker     SkPaint paint;
283*c8dee2aaSAndroid Build Coastguard Worker     SkPath path;
284*c8dee2aaSAndroid Build Coastguard Worker     path.moveTo(16365.5f, 1394);
285*c8dee2aaSAndroid Build Coastguard Worker     path.lineTo(16365.5f, 1387.5f);
286*c8dee2aaSAndroid Build Coastguard Worker     path.quadTo(16365.5f, 1385.43f, 16367, 1383.96f);
287*c8dee2aaSAndroid Build Coastguard Worker     path.quadTo(16368.4f, 1382.5f, 16370.5f, 1382.5f);
288*c8dee2aaSAndroid Build Coastguard Worker     path.lineTo(16465.5f, 1382.5f);
289*c8dee2aaSAndroid Build Coastguard Worker     path.quadTo(16467.6f, 1382.5f, 16469, 1383.96f);
290*c8dee2aaSAndroid Build Coastguard Worker     path.quadTo(16470.5f, 1385.43f, 16470.5f, 1387.5f);
291*c8dee2aaSAndroid Build Coastguard Worker     path.lineTo(16470.5f, 1394);
292*c8dee2aaSAndroid Build Coastguard Worker     path.quadTo(16470.5f, 1396.07f, 16469, 1397.54f);
293*c8dee2aaSAndroid Build Coastguard Worker     path.quadTo(16467.6f, 1399, 16465.5f, 1399);
294*c8dee2aaSAndroid Build Coastguard Worker     path.lineTo(16370.5f, 1399);
295*c8dee2aaSAndroid Build Coastguard Worker     path.quadTo(16368.4f, 1399, 16367, 1397.54f);
296*c8dee2aaSAndroid Build Coastguard Worker     path.quadTo(16365.5f, 1396.07f, 16365.5f, 1394);
297*c8dee2aaSAndroid Build Coastguard Worker     path.close();
298*c8dee2aaSAndroid Build Coastguard Worker     SkPath p2;
299*c8dee2aaSAndroid Build Coastguard Worker     SkMatrix m;
300*c8dee2aaSAndroid Build Coastguard Worker     m.reset();
301*c8dee2aaSAndroid Build Coastguard Worker     m.postTranslate(0.001f, 0.001f);
302*c8dee2aaSAndroid Build Coastguard Worker     path.transform(m, &p2);
303*c8dee2aaSAndroid Build Coastguard Worker 
304*c8dee2aaSAndroid Build Coastguard Worker     auto surface(SkSurfaces::Raster(SkImageInfo::MakeN32Premul(640, 480)));
305*c8dee2aaSAndroid Build Coastguard Worker     SkCanvas* canvas = surface->getCanvas();
306*c8dee2aaSAndroid Build Coastguard Worker     canvas->translate(-16366, -1383);
307*c8dee2aaSAndroid Build Coastguard Worker     canvas->drawPath(p2, paint);
308*c8dee2aaSAndroid Build Coastguard Worker 
309*c8dee2aaSAndroid Build Coastguard Worker     m.reset();
310*c8dee2aaSAndroid Build Coastguard Worker     m.postTranslate(-0.001f, -0.001f);
311*c8dee2aaSAndroid Build Coastguard Worker     path.transform(m, &p2);
312*c8dee2aaSAndroid Build Coastguard Worker     canvas->drawPath(p2, paint);
313*c8dee2aaSAndroid Build Coastguard Worker 
314*c8dee2aaSAndroid Build Coastguard Worker     m.reset();
315*c8dee2aaSAndroid Build Coastguard Worker     path.transform(m, &p2);
316*c8dee2aaSAndroid Build Coastguard Worker     canvas->drawPath(p2, paint);
317*c8dee2aaSAndroid Build Coastguard Worker }
318*c8dee2aaSAndroid Build Coastguard Worker 
319*c8dee2aaSAndroid Build Coastguard Worker // we used to assert if the bounds of the device (clip) was larger than 32K
320*c8dee2aaSAndroid Build Coastguard Worker // even when the path itself was smaller. We just draw and hope in the debug
321*c8dee2aaSAndroid Build Coastguard Worker // version to not assert.
test_giantaa()322*c8dee2aaSAndroid Build Coastguard Worker static void test_giantaa() {
323*c8dee2aaSAndroid Build Coastguard Worker     const int W = 400;
324*c8dee2aaSAndroid Build Coastguard Worker     const int H = 400;
325*c8dee2aaSAndroid Build Coastguard Worker     auto surface(SkSurfaces::Raster(SkImageInfo::MakeN32Premul(33000, 10)));
326*c8dee2aaSAndroid Build Coastguard Worker 
327*c8dee2aaSAndroid Build Coastguard Worker     SkPaint paint;
328*c8dee2aaSAndroid Build Coastguard Worker     paint.setAntiAlias(true);
329*c8dee2aaSAndroid Build Coastguard Worker     SkPath path;
330*c8dee2aaSAndroid Build Coastguard Worker     path.addOval(SkRect::MakeXYWH(-10, -10, 20 + W, 20 + H));
331*c8dee2aaSAndroid Build Coastguard Worker     surface->getCanvas()->drawPath(path, paint);
332*c8dee2aaSAndroid Build Coastguard Worker }
333*c8dee2aaSAndroid Build Coastguard Worker 
334*c8dee2aaSAndroid Build Coastguard Worker // Extremely large path_length/dash_length ratios may cause infinite looping
335*c8dee2aaSAndroid Build Coastguard Worker // in SkDashPathEffect::filterPath() due to single precision rounding.
336*c8dee2aaSAndroid Build Coastguard Worker // The test is quite expensive, but it should get much faster after the fix
337*c8dee2aaSAndroid Build Coastguard Worker // for http://crbug.com/165432 goes in.
test_infinite_dash(skiatest::Reporter * reporter)338*c8dee2aaSAndroid Build Coastguard Worker static void test_infinite_dash(skiatest::Reporter* reporter) {
339*c8dee2aaSAndroid Build Coastguard Worker     SkPath path;
340*c8dee2aaSAndroid Build Coastguard Worker     path.moveTo(0, 0);
341*c8dee2aaSAndroid Build Coastguard Worker     path.lineTo(5000000, 0);
342*c8dee2aaSAndroid Build Coastguard Worker 
343*c8dee2aaSAndroid Build Coastguard Worker     SkScalar intervals[] = { 0.2f, 0.2f };
344*c8dee2aaSAndroid Build Coastguard Worker     sk_sp<SkPathEffect> dash(SkDashPathEffect::Make(intervals, 2, 0));
345*c8dee2aaSAndroid Build Coastguard Worker 
346*c8dee2aaSAndroid Build Coastguard Worker     SkPath filteredPath;
347*c8dee2aaSAndroid Build Coastguard Worker     SkPaint paint;
348*c8dee2aaSAndroid Build Coastguard Worker     paint.setStyle(SkPaint::kStroke_Style);
349*c8dee2aaSAndroid Build Coastguard Worker     paint.setPathEffect(dash);
350*c8dee2aaSAndroid Build Coastguard Worker 
351*c8dee2aaSAndroid Build Coastguard Worker     skpathutils::FillPathWithPaint(path, paint, &filteredPath);
352*c8dee2aaSAndroid Build Coastguard Worker     // If we reach this, we passed.
353*c8dee2aaSAndroid Build Coastguard Worker     REPORTER_ASSERT(reporter, true);
354*c8dee2aaSAndroid Build Coastguard Worker }
355*c8dee2aaSAndroid Build Coastguard Worker 
356*c8dee2aaSAndroid Build Coastguard Worker // http://crbug.com/165432
357*c8dee2aaSAndroid Build Coastguard Worker // Limit extreme dash path effects to avoid exhausting the system memory.
test_crbug_165432(skiatest::Reporter * reporter)358*c8dee2aaSAndroid Build Coastguard Worker static void test_crbug_165432(skiatest::Reporter* reporter) {
359*c8dee2aaSAndroid Build Coastguard Worker     SkPath path;
360*c8dee2aaSAndroid Build Coastguard Worker     path.moveTo(0, 0);
361*c8dee2aaSAndroid Build Coastguard Worker     path.lineTo(10000000, 0);
362*c8dee2aaSAndroid Build Coastguard Worker 
363*c8dee2aaSAndroid Build Coastguard Worker     SkScalar intervals[] = { 0.5f, 0.5f };
364*c8dee2aaSAndroid Build Coastguard Worker     sk_sp<SkPathEffect> dash(SkDashPathEffect::Make(intervals, 2, 0));
365*c8dee2aaSAndroid Build Coastguard Worker 
366*c8dee2aaSAndroid Build Coastguard Worker     SkPaint paint;
367*c8dee2aaSAndroid Build Coastguard Worker     paint.setStyle(SkPaint::kStroke_Style);
368*c8dee2aaSAndroid Build Coastguard Worker     paint.setPathEffect(dash);
369*c8dee2aaSAndroid Build Coastguard Worker 
370*c8dee2aaSAndroid Build Coastguard Worker     SkPath filteredPath;
371*c8dee2aaSAndroid Build Coastguard Worker     SkStrokeRec rec(paint);
372*c8dee2aaSAndroid Build Coastguard Worker     REPORTER_ASSERT(reporter, !dash->filterPath(&filteredPath, path, &rec, nullptr));
373*c8dee2aaSAndroid Build Coastguard Worker     REPORTER_ASSERT(reporter, filteredPath.isEmpty());
374*c8dee2aaSAndroid Build Coastguard Worker }
375*c8dee2aaSAndroid Build Coastguard Worker 
376*c8dee2aaSAndroid Build Coastguard Worker // http://crbug.com/472147
377*c8dee2aaSAndroid Build Coastguard Worker // This is a simplified version from the bug. RRect radii not properly scaled.
test_crbug_472147_simple(skiatest::Reporter * reporter)378*c8dee2aaSAndroid Build Coastguard Worker static void test_crbug_472147_simple(skiatest::Reporter* reporter) {
379*c8dee2aaSAndroid Build Coastguard Worker     auto surface(SkSurfaces::Raster(SkImageInfo::MakeN32Premul(1000, 1000)));
380*c8dee2aaSAndroid Build Coastguard Worker     SkCanvas* canvas = surface->getCanvas();
381*c8dee2aaSAndroid Build Coastguard Worker     SkPaint p;
382*c8dee2aaSAndroid Build Coastguard Worker     SkRect r = SkRect::MakeLTRB(-246.0f, 33.0f, 848.0f, 33554464.0f);
383*c8dee2aaSAndroid Build Coastguard Worker     SkVector radii[4] = {
384*c8dee2aaSAndroid Build Coastguard Worker         { 13.0f, 8.0f }, { 170.0f, 2.0 }, { 256.0f, 33554430.0f }, { 120.0f, 5.0f }
385*c8dee2aaSAndroid Build Coastguard Worker     };
386*c8dee2aaSAndroid Build Coastguard Worker     SkRRect rr;
387*c8dee2aaSAndroid Build Coastguard Worker     rr.setRectRadii(r, radii);
388*c8dee2aaSAndroid Build Coastguard Worker     canvas->drawRRect(rr, p);
389*c8dee2aaSAndroid Build Coastguard Worker }
390*c8dee2aaSAndroid Build Coastguard Worker 
391*c8dee2aaSAndroid Build Coastguard Worker // http://crbug.com/472147
392*c8dee2aaSAndroid Build Coastguard Worker // RRect radii not properly scaled.
test_crbug_472147_actual(skiatest::Reporter * reporter)393*c8dee2aaSAndroid Build Coastguard Worker static void test_crbug_472147_actual(skiatest::Reporter* reporter) {
394*c8dee2aaSAndroid Build Coastguard Worker     auto surface(SkSurfaces::Raster(SkImageInfo::MakeN32Premul(1000, 1000)));
395*c8dee2aaSAndroid Build Coastguard Worker     SkCanvas* canvas = surface->getCanvas();
396*c8dee2aaSAndroid Build Coastguard Worker     SkPaint p;
397*c8dee2aaSAndroid Build Coastguard Worker     SkRect r = SkRect::MakeLTRB(-246.0f, 33.0f, 848.0f, 33554464.0f);
398*c8dee2aaSAndroid Build Coastguard Worker     SkVector radii[4] = {
399*c8dee2aaSAndroid Build Coastguard Worker         { 13.0f, 8.0f }, { 170.0f, 2.0 }, { 256.0f, 33554430.0f }, { 120.0f, 5.0f }
400*c8dee2aaSAndroid Build Coastguard Worker     };
401*c8dee2aaSAndroid Build Coastguard Worker     SkRRect rr;
402*c8dee2aaSAndroid Build Coastguard Worker     rr.setRectRadii(r, radii);
403*c8dee2aaSAndroid Build Coastguard Worker     canvas->clipRRect(rr);
404*c8dee2aaSAndroid Build Coastguard Worker 
405*c8dee2aaSAndroid Build Coastguard Worker     SkRect r2 = SkRect::MakeLTRB(0, 33, 1102, 33554464);
406*c8dee2aaSAndroid Build Coastguard Worker     canvas->drawRect(r2, p);
407*c8dee2aaSAndroid Build Coastguard Worker }
408*c8dee2aaSAndroid Build Coastguard Worker 
DEF_TEST(DrawPath,reporter)409*c8dee2aaSAndroid Build Coastguard Worker DEF_TEST(DrawPath, reporter) {
410*c8dee2aaSAndroid Build Coastguard Worker     test_giantaa();
411*c8dee2aaSAndroid Build Coastguard Worker     test_bug533();
412*c8dee2aaSAndroid Build Coastguard Worker     test_bigcubic();
413*c8dee2aaSAndroid Build Coastguard Worker     test_crbug_124652();
414*c8dee2aaSAndroid Build Coastguard Worker     test_crbug_140642();
415*c8dee2aaSAndroid Build Coastguard Worker     test_crbug_140803();
416*c8dee2aaSAndroid Build Coastguard Worker     test_inversepathwithclip();
417*c8dee2aaSAndroid Build Coastguard Worker     // why?
418*c8dee2aaSAndroid Build Coastguard Worker     if ((false)) test_crbug131181();
419*c8dee2aaSAndroid Build Coastguard Worker     test_infinite_dash(reporter);
420*c8dee2aaSAndroid Build Coastguard Worker     test_crbug_165432(reporter);
421*c8dee2aaSAndroid Build Coastguard Worker     test_crbug_472147_simple(reporter);
422*c8dee2aaSAndroid Build Coastguard Worker     test_crbug_472147_actual(reporter);
423*c8dee2aaSAndroid Build Coastguard Worker     test_crbug_1239558(reporter);
424*c8dee2aaSAndroid Build Coastguard Worker     test_big_aa_rect(reporter);
425*c8dee2aaSAndroid Build Coastguard Worker     test_halfway();
426*c8dee2aaSAndroid Build Coastguard Worker }
427