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skia2/tests/TriangulatingPathRendererTests.cpp
Mike Reed 12a75588e7 GrFPArgs no longer needs sampling 
Change-Id: I20fc4b4c3d6997f3ebc1d6d0049447b348f8a110
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/387416
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Mike Reed <reed@google.com>
2021-03-20 17:33:56 +00:00

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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "tests/Test.h"
#include "include/core/SkPath.h"
#include "include/effects/SkGradientShader.h"
#include "include/gpu/GrDirectContext.h"
#include "src/gpu/GrDirectContextPriv.h"
#include "src/gpu/GrEagerVertexAllocator.h"
#include "src/gpu/GrInnerFanTriangulator.h"
#include "src/gpu/GrStyle.h"
#include "src/gpu/GrSurfaceDrawContext.h"
#include "src/gpu/effects/GrPorterDuffXferProcessor.h"
#include "src/gpu/geometry/GrStyledShape.h"
#include "src/gpu/ops/GrTriangulatingPathRenderer.h"
#include "src/shaders/SkShaderBase.h"
#include "tools/ToolUtils.h"
#include <map>
/*
* These tests pass by not crashing, hanging or asserting in Debug.
*/
using CreatePathFn = SkPath(*)();
CreatePathFn kNonEdgeAAPaths[] = {
// Tests active edges made inactive by splitting.
// Also tests active edge list forced into an invalid ordering by
// splitting (mopped up in cleanup_active_edges()).
[]() -> SkPath {
SkPath path;
path.moveTo(229.127044677734375f, 67.34100341796875f);
path.lineTo(187.8097381591796875f, -6.7729740142822265625f);
path.lineTo(171.411407470703125f, 50.94266510009765625f);
path.lineTo(245.5253753662109375f, 9.6253643035888671875f);
path.moveTo(208.4683990478515625f, 30.284009933471679688f);
path.lineTo(171.411407470703125f, 50.94266510009765625f);
path.lineTo(187.8097381591796875f, -6.7729740142822265625f);
return path;
},
// Intersections which fall exactly on the current vertex, and require
// a restart of the intersection checking.
[]() -> SkPath {
SkPath path;
path.moveTo(314.483551025390625f, 486.246002197265625f);
path.lineTo(385.41949462890625f, 532.8087158203125f);
path.lineTo(373.232879638671875f, 474.05938720703125f);
path.lineTo(326.670166015625f, 544.995361328125f);
path.moveTo(349.951507568359375f, 509.52734375f);
path.lineTo(373.232879638671875f, 474.05938720703125f);
path.lineTo(385.41949462890625f, 532.8087158203125f);
return path;
},
// Tests active edges which are removed by splitting.
[]() -> SkPath {
SkPath path;
path.moveTo(343.107391357421875f, 613.62176513671875f);
path.lineTo(426.632415771484375f, 628.5740966796875f);
path.lineTo(392.3460693359375f, 579.33544921875f);
path.lineTo(377.39373779296875f, 662.86041259765625f);
path.moveTo(384.869873046875f, 621.097900390625f);
path.lineTo(392.3460693359375f, 579.33544921875f);
path.lineTo(426.632415771484375f, 628.5740966796875f);
return path;
},
// Collinear edges merged in set_top().
// Also, an intersection between left and right enclosing edges which
// falls above the current vertex.
[]() -> SkPath {
SkPath path;
path.moveTo(545.95751953125f, 791.69854736328125f);
path.lineTo(612.05816650390625f, 738.494140625f);
path.lineTo(552.4056396484375f, 732.0460205078125f);
path.lineTo(605.61004638671875f, 798.14666748046875f);
path.moveTo(579.00787353515625f, 765.0963134765625f);
path.lineTo(552.4056396484375f, 732.0460205078125f);
path.lineTo(612.05816650390625f, 738.494140625f);
return path;
},
// Tests active edges which are made inactive by set_top().
[]() -> SkPath {
SkPath path;
path.moveTo(819.2725830078125f, 751.77447509765625f);
path.lineTo(820.70904541015625f, 666.933837890625f);
path.lineTo(777.57049560546875f, 708.63592529296875f);
path.lineTo(862.4111328125f, 710.0723876953125f);
path.moveTo(819.99078369140625f, 709.3541259765625f);
path.lineTo(777.57049560546875f, 708.63592529296875f);
path.lineTo(820.70904541015625f, 666.933837890625f);
return path;
},
[]() -> SkPath {
SkPath path;
path.moveTo(823.33209228515625f, 749.052734375f);
path.lineTo(823.494873046875f, 664.20013427734375f);
path.lineTo(780.9871826171875f, 706.5450439453125f);
path.lineTo(865.8397216796875f, 706.70782470703125f);
path.moveTo(823.4134521484375f, 706.6263427734375f);
path.lineTo(780.9871826171875f, 706.5450439453125f);
path.lineTo(823.494873046875f, 664.20013427734375f);
return path;
},
[]() -> SkPath {
SkPath path;
path.moveTo(954.862548828125f, 562.8349609375f);
path.lineTo(899.32818603515625f, 498.679443359375f);
path.lineTo(895.017578125f, 558.52435302734375f);
path.lineTo(959.17315673828125f, 502.990081787109375f);
path.moveTo(927.0953369140625f, 530.7572021484375f);
path.lineTo(895.017578125f, 558.52435302734375f);
path.lineTo(899.32818603515625f, 498.679443359375f);
return path;
},
[]() -> SkPath {
SkPath path;
path.moveTo(958.5330810546875f, 547.35516357421875f);
path.lineTo(899.93109130859375f, 485.989013671875f);
path.lineTo(898.54901123046875f, 545.97308349609375f);
path.lineTo(959.9151611328125f, 487.37109375f);
path.moveTo(929.2320556640625f, 516.67205810546875f);
path.lineTo(898.54901123046875f, 545.97308349609375f);
path.lineTo(899.93109130859375f, 485.989013671875f);
return path;
},
[]() -> SkPath {
SkPath path;
path.moveTo(389.8609619140625f, 369.326873779296875f);
path.lineTo(470.6290283203125f, 395.33697509765625f);
path.lineTo(443.250030517578125f, 341.9478759765625f);
path.lineTo(417.239959716796875f, 422.7159423828125f);
path.moveTo(430.244964599609375f, 382.3319091796875f);
path.lineTo(443.250030517578125f, 341.9478759765625f);
path.lineTo(470.6290283203125f, 395.33697509765625f);
return path;
},
[]() -> SkPath {
SkPath path;
path.moveTo(20, 20);
path.lineTo(50, 80);
path.lineTo(20, 80);
path.moveTo(80, 50);
path.lineTo(50, 50);
path.lineTo(20, 50);
return path;
},
[]() -> SkPath {
SkPath path;
path.moveTo(257.19439697265625f, 320.876617431640625f);
path.lineTo(190.113037109375f, 320.58978271484375f);
path.lineTo(203.64404296875f, 293.8145751953125f);
path.moveTo(203.357177734375f, 360.896026611328125f);
path.lineTo(216.88824462890625f, 334.120819091796875f);
path.lineTo(230.41925048828125f, 307.345611572265625f);
return path;
},
// A degenerate segments case, where both upper and lower segments of
// a split edge must remain active.
[]() -> SkPath {
SkPath path;
path.moveTo(231.9331207275390625f, 306.2012939453125f);
path.lineTo(191.4859161376953125f, 306.04547119140625f);
path.lineTo(231.0659332275390625f, 300.2642822265625f);
path.moveTo(189.946807861328125f, 302.072265625f);
path.lineTo(179.79705810546875f, 294.859771728515625f);
path.lineTo(191.0016021728515625f, 296.165679931640625f);
path.moveTo(150.8942108154296875f, 304.900146484375f);
path.lineTo(179.708892822265625f, 297.849029541015625f);
path.lineTo(190.4742279052734375f, 299.11895751953125f);
return path;
},
// Handle the case where edge.dist(edge.fTop) != 0.0.
[]() -> SkPath {
SkPath path;
path.moveTo( 0.0f, 400.0f);
path.lineTo( 138.0f, 202.0f);
path.lineTo( 0.0f, 202.0f);
path.moveTo( 12.62693023681640625f, 250.57464599609375f);
path.lineTo( 8.13896942138671875f, 254.556884765625f);
path.lineTo(-18.15641021728515625f, 220.40203857421875f);
path.lineTo(-15.986493110656738281f, 219.6513519287109375f);
path.moveTo( 36.931194305419921875f, 282.485504150390625f);
path.lineTo( 15.617521286010742188f, 261.2901611328125f);
path.lineTo( 10.3829498291015625f, 252.565765380859375f);
path.lineTo(-16.165292739868164062f, 222.646026611328125f);
return path;
},
// A degenerate segments case which exercises inactive edges being
// made active by splitting.
[]() -> SkPath {
SkPath path;
path.moveTo(690.62127685546875f, 509.25555419921875f);
path.lineTo(99.336181640625f, 511.71405029296875f);
path.lineTo(708.362548828125f, 512.4349365234375f);
path.lineTo(729.9940185546875f, 516.3114013671875f);
path.lineTo(738.708984375f, 518.76995849609375f);
path.lineTo(678.3463134765625f, 510.0819091796875f);
path.lineTo(681.21795654296875f, 504.81378173828125f);
path.moveTo(758.52764892578125f, 521.55963134765625f);
path.lineTo(719.1549072265625f, 514.50372314453125f);
path.lineTo(689.59063720703125f, 512.0628662109375f);
path.lineTo(679.78216552734375f, 507.447845458984375f);
return path;
},
// Tests vertices which become "orphaned" (ie., no connected edges)
// after simplification.
[]() -> SkPath {
SkPath path;
path.moveTo(217.326019287109375f, 166.4752960205078125f);
path.lineTo(226.279266357421875f, 170.929473876953125f);
path.lineTo(234.3973388671875f, 177.0623626708984375f);
path.lineTo(262.0921630859375f, 188.746124267578125f);
path.moveTo(196.23638916015625f, 174.0722198486328125f);
path.lineTo(416.15277099609375f, 180.138214111328125f);
path.lineTo(192.651947021484375f, 304.0228271484375f);
return path;
},
[]() -> SkPath {
SkPath path;
path.moveTo( 0.0f, 0.0f);
path.lineTo(10000.0f, 0.0f);
path.lineTo( 0.0f, -1.0f);
path.lineTo(10000.0f, 0.000001f);
path.lineTo( 0.0f, -30.0f);
return path;
},
// Reduction of Nebraska-StateSeal.svg. Floating point error causes the
// same edge to be added to more than one poly on the same side.
[]() -> SkPath {
SkPath path;
path.moveTo(170.8199920654296875, 491.86700439453125);
path.lineTo(173.7649993896484375, 489.7340087890625);
path.lineTo(174.1450958251953125, 498.545989990234375);
path.lineTo( 171.998992919921875, 500.88201904296875);
path.moveTo(168.2922515869140625, 498.66265869140625);
path.lineTo(169.8589935302734375, 497.94500732421875);
path.lineTo( 172, 500.88299560546875);
path.moveTo( 169.555267333984375, 490.70111083984375);
path.lineTo(173.7649993896484375, 489.7340087890625);
path.lineTo( 170.82000732421875, 491.86700439453125);
return path;
},
// A shape with a vertex collinear to the right hand edge.
// This messes up find_enclosing_edges.
[]() -> SkPath {
SkPath path;
path.moveTo(80, 20);
path.lineTo(80, 60);
path.lineTo(20, 60);
path.moveTo(80, 50);
path.lineTo(80, 80);
path.lineTo(20, 80);
return path;
},
// Exercises the case where an edge becomes collinear with *two* of its
// adjacent neighbour edges after splitting.
// This is a reduction from
// http://mooooo.ooo/chebyshev-sine-approximation/horner_ulp.svg
[]() -> SkPath {
SkPath path;
path.moveTo( 351.99298095703125, 348.23046875);
path.lineTo( 351.91876220703125, 347.33984375);
path.lineTo( 351.91876220703125, 346.1953125);
path.lineTo( 351.90313720703125, 347.734375);
path.lineTo( 351.90313720703125, 346.1328125);
path.lineTo( 351.87579345703125, 347.93359375);
path.lineTo( 351.87579345703125, 345.484375);
path.lineTo( 351.86407470703125, 347.7890625);
path.lineTo( 351.86407470703125, 346.2109375);
path.lineTo( 351.84844970703125, 347.63763427734375);
path.lineTo( 351.84454345703125, 344.19232177734375);
path.lineTo( 351.78204345703125, 346.9483642578125);
path.lineTo( 351.758636474609375, 347.18310546875);
path.lineTo( 351.75469970703125, 346.75);
path.lineTo( 351.75469970703125, 345.46875);
path.lineTo( 352.5546875, 345.46875);
path.lineTo( 352.55078125, 347.01953125);
path.lineTo( 351.75079345703125, 347.02313232421875);
path.lineTo( 351.74688720703125, 346.15203857421875);
path.lineTo( 351.74688720703125, 347.646148681640625);
path.lineTo( 352.5390625, 346.94140625);
path.lineTo( 351.73907470703125, 346.94268798828125);
path.lineTo( 351.73516845703125, 344.48565673828125);
path.lineTo( 352.484375, 346.73828125);
path.lineTo( 351.68438720703125, 346.7401123046875);
path.lineTo( 352.4765625, 346.546875);
path.lineTo( 351.67657470703125, 346.54937744140625);
path.lineTo( 352.47265625, 346.75390625);
path.lineTo( 351.67266845703125, 346.756622314453125);
path.lineTo( 351.66876220703125, 345.612091064453125);
return path;
},
// A path which contains out-of-range colinear intersections.
[]() -> SkPath {
SkPath path;
path.moveTo( 0, 63.39080047607421875);
path.lineTo(-0.70804601907730102539, 63.14350128173828125);
path.lineTo(-7.8608899287380243391e-17, 64.14080047607421875);
path.moveTo( 0, 64.14080047607421875);
path.lineTo(44.285900115966796875, 64.14080047607421875);
path.lineTo( 0, 62.64080047607421875);
path.moveTo(21.434900283813476562, -0.24732701480388641357);
path.lineTo(-0.70804601907730102539, 63.14350128173828125);
path.lineTo(0.70804601907730102539, 63.6381988525390625);
return path;
},
// A path which results in infs and nans when conics are converted to quads.
[]() -> SkPath {
SkPath path;
path.moveTo(-2.20883e+37f, -1.02892e+37f);
path.conicTo(-2.00958e+38f, -9.36107e+37f, -1.7887e+38f, -8.33215e+37f, 0.707107f);
path.conicTo(-1.56782e+38f, -7.30323e+37f, 2.20883e+37f, 1.02892e+37f, 0.707107f);
path.conicTo(2.00958e+38f, 9.36107e+37f, 1.7887e+38f, 8.33215e+37f, 0.707107f);
path.conicTo(1.56782e+38f, 7.30323e+37f, -2.20883e+37f, -1.02892e+37f, 0.707107f);
return path;
},
// A quad which generates a huge number of points (>2B) when uniformly
// linearized. This should not hang or OOM.
[]() -> SkPath {
SkPath path;
path.moveTo(10, 0);
path.lineTo(0, 0);
path.quadTo(10, 0, 0, 8315084722602508288);
return path;
},
// A path which hangs during simplification. It produces an edge which is
// to the left of its own endpoints, which causes an infinite loop in the
// right-enclosing-edge splitting.
[]() -> SkPath {
SkPath path;
path.moveTo(0.75001740455627441406, 23.051967620849609375);
path.lineTo(5.8471612930297851562, 22.731662750244140625);
path.lineTo(10.749670028686523438, 22.253145217895507812);
path.lineTo(13.115868568420410156, 22.180681228637695312);
path.lineTo(15.418928146362304688, 22.340015411376953125);
path.lineTo( 17.654022216796875, 22.82159423828125);
path.lineTo(19.81632232666015625, 23.715869903564453125);
path.lineTo(40, 0);
path.lineTo(5.5635203441547955577e-15, 0);
path.lineTo(5.5635203441547955577e-15, 47);
path.lineTo(-1.4210854715202003717e-14, 21.713298797607421875);
path.lineTo(0.75001740455627441406, 21.694292068481445312);
path.lineTo(0.75001740455627441406, 23.051967620849609375);
return path;
},
// Reduction from skbug.com/7911 that causes a crash due to splitting a
// zombie edge.
[]() -> SkPath {
SkPath path;
path.moveTo( 0, 1.0927740941146660348e+24);
path.lineTo(2.9333931225865729333e+32, 16476101);
path.lineTo(1.0927731573659435417e+24, 1.0927740941146660348e+24);
path.lineTo(1.0927740941146660348e+24, 3.7616281094287041715e-37);
path.lineTo(1.0927740941146660348e+24, 1.0927740941146660348e+24);
path.lineTo(1.3061803026169399536e-33, 1.0927740941146660348e+24);
path.lineTo(4.7195362919941370727e-16, -8.4247545146051822591e+32);
return path;
},
// From crbug.com/844873. Crashes trying to merge a zombie edge.
[]() -> SkPath {
SkPath path;
path.moveTo( 316.000579833984375, -4338355948977389568);
path.lineTo(1.5069369808623501312e+20, 75180972320904708096.0);
path.lineTo(1.5069369808623501312e+20, 75180972320904708096.0);
path.lineTo( 771.21014404296875, -4338355948977389568.0);
path.lineTo( 316.000579833984375, -4338355948977389568.0);
path.moveTo( 354.208984375, -4338355948977389568.0);
path.lineTo( 773.00177001953125, -4338355948977389568.0);
path.lineTo(1.5069369808623501312e+20, 75180972320904708096.0);
path.lineTo(1.5069369808623501312e+20, 75180972320904708096.0);
path.lineTo( 354.208984375, -4338355948977389568.0);
return path;
},
// From crbug.com/844873. Hangs repeatedly splitting alternate vertices.
[]() -> SkPath {
SkPath path;
path.moveTo(10, -1e+20f);
path.lineTo(11, 25000);
path.lineTo(10, 25000);
path.lineTo(11, 25010);
return path;
},
// Reduction from circular_arcs_stroke_and_fill_round GM which
// repeatedly splits on the opposite edge from case 34 above.
[]() -> SkPath {
SkPath path;
path.moveTo( 16.25, 26.495191574096679688);
path.lineTo(32.420825958251953125, 37.377376556396484375);
path.lineTo(25.176382064819335938, 39.31851959228515625);
path.moveTo( 20, 20);
path.lineTo(28.847436904907226562, 37.940830230712890625);
path.lineTo(25.17638397216796875, 39.31851959228515625);
return path;
},
// Reduction from crbug.com/843135 where an intersection is found
// below the bottom of both intersected edges.
[]() -> SkPath {
SkPath path;
path.moveTo(-2791476679359332352, 2608107002026524672);
path.lineTo( 0, 11.95427703857421875);
path.lineTo(-2781824066779086848, 2599088532777598976);
path.lineTo( -7772.6875, 7274);
return path;
},
// Reduction from crbug.com/843135. Exercises a case where an intersection is missed.
// This causes bad ordering in the active edge list.
[]() -> SkPath {
SkPath path;
path.moveTo(-1.0662557646016024569e+23, 9.9621425197286319718e+22);
path.lineTo( -121806400, 113805032);
path.lineTo( -120098872, 112209680);
path.lineTo( 6.2832999862817380468e-36, 2.9885697364807128906);
return path;
},
// Reduction from crbug.com/851409. Exercises collinear last vertex.
[]() -> SkPath {
SkPath path;
path.moveTo(2072553216, 0);
path.lineTo(2072553216, 1);
path.lineTo(2072553472, -13.5);
path.lineTo(2072553216, 0);
path.lineTo(2072553472, -6.5);
return path;
},
// Another reduction from crbug.com/851409. Exercises two sequential collinear edges.
[]() -> SkPath {
SkPath path;
path.moveTo(2072553216, 0);
path.lineTo(2072553216, 1);
path.lineTo(2072553472, -13);
path.lineTo(2072553216, 0);
path.lineTo(2072553472, -6);
path.lineTo(2072553472, -13);
return path;
},
// Reduction from crbug.com/860655. Cause is three collinear edges discovered during
// sanitize_contours pass, before the vertices have been found coincident.
[]() -> SkPath {
SkPath path;
path.moveTo( 32572426382475264, -3053391034974208);
path.lineTo( 521289856, -48865776);
path.lineTo( 130322464, -12215873);
path.moveTo( 32572426382475264, -3053391034974208);
path.lineTo( 521289856, -48865776);
path.lineTo( 130322464, -12215873);
path.moveTo( 32572426382475264, -3053391034974208);
path.lineTo( 32114477642022912, -3010462031544320);
path.lineTo( 32111784697528320, -3010209702215680);
return path;
},
};
// A simple concave path. Test this with a non-invertible matrix.
static SkPath create_path_17() {
SkPath path;
path.moveTo(20, 20);
path.lineTo(80, 20);
path.lineTo(30, 30);
path.lineTo(20, 80);
return path;
}
// An intersection above the first vertex in the mesh.
// Reduction from http://crbug.com/730687
static SkPath create_path_20() {
SkPath path;
path.moveTo( 2822128.5, 235.026336669921875);
path.lineTo( 2819349.25, 235.3623504638671875);
path.lineTo( -340558688, 23.83478546142578125);
path.lineTo( -340558752, 25.510419845581054688);
path.lineTo( -340558720, 27.18605804443359375);
return path;
}
// An intersection whose result is NaN (due to rounded-to-inf endpoint).
static SkPath create_path_21() {
SkPath path;
path.moveTo(1.7889142061167663539e+38, 39338463358011572224.0);
path.lineTo( 1647.4193115234375, -522.603515625);
path.lineTo( 1677.74560546875, -529.0028076171875);
path.lineTo( 1678.29541015625, -528.7847900390625);
path.lineTo( 1637.5167236328125, -519.79266357421875);
path.lineTo( 1647.4193115234375, -522.603515625);
return path;
}
// An edge collapse event which also collapses a neighbour, requiring
// its event to be removed.
static SkPath create_path_25() {
SkPath path;
path.moveTo( 43.44110107421875, 148.15106201171875);
path.lineTo( 44.64471435546875, 148.16748046875);
path.lineTo( 46.35009765625, 147.403076171875);
path.lineTo( 46.45404052734375, 148.34906005859375);
path.lineTo( 45.0400390625, 148.54205322265625);
path.lineTo( 44.624053955078125, 148.9810791015625);
path.lineTo( 44.59405517578125, 149.16107177734375);
path.lineTo( 44.877044677734375, 149.62005615234375);
path.lineTo(144.373016357421875, 68.8070068359375);
return path;
}
// An edge collapse event causes an edge to become collinear, requiring
// its event to be removed.
static SkPath create_path_26() {
SkPath path;
path.moveTo( 43.44110107421875, 148.15106201171875);
path.lineTo( 44.64471435546875, 148.16748046875);
path.lineTo( 46.35009765625, 147.403076171875);
path.lineTo( 46.45404052734375, 148.34906005859375);
path.lineTo( 45.0400390625, 148.54205322265625);
path.lineTo( 44.624053955078125, 148.9810791015625);
path.lineTo( 44.59405517578125, 149.16107177734375);
path.lineTo( 44.877044677734375, 149.62005615234375);
path.lineTo(144.373016357421875, 68.8070068359375);
return path;
}
// A path which results in non-finite points when stroked and bevelled for AA.
static SkPath create_path_27() {
SkPath path;
path.moveTo(8.5027233009104409507e+37, 1.7503381025241130639e+37);
path.lineTo(7.0923661737711584874e+37, 1.4600074517285415699e+37);
path.lineTo(7.0848733446033294691e+37, 1.4584649744781838604e+37);
path.lineTo(-2.0473916115129349496e+37, -4.2146796450364162012e+36);
path.lineTo(2.0473912312177548811e+37, 4.2146815465123165435e+36);
return path;
}
// AA stroking this path produces intersection failures on bevelling.
// This should skip the point, but not assert.
static SkPath create_path_28() {
SkPath path;
path.moveTo(-7.5952312625177475154e+21, -2.6819185100266674911e+24);
path.lineTo( 1260.3787841796875, 1727.7947998046875);
path.lineTo( 1260.5567626953125, 1728.0386962890625);
path.lineTo(1.1482511310557754163e+21, 4.054538502765980051e+23);
path.lineTo(-7.5952312625177475154e+21, -2.6819185100266674911e+24);
return path;
}
// A path with vertices which become infinite on AA stroking. Should not crash or assert.
static SkPath create_path_31() {
SkPath path;
path.moveTo(2.0257809259190991347e+36, -1244080640);
path.conicTo(2.0257809259190991347e+36, -1244080640,
2.0257809259190991347e+36, 0.10976474732160568237, 0.70710676908493041992);
path.lineTo(-10036566016, -1954718402215936);
path.conicTo(-1.1375507718551896064e+20, -1954721086570496,
10036566016, -1954721086570496, 0.70710676908493041992);
return path;
}
// Reduction from crbug.com/851914.
static SkPath create_path_38() {
SkPath path;
path.moveTo(14.400531768798828125, 17.711114883422851562);
path.lineTo(14.621990203857421875, 171563104293879808);
path.lineTo(14.027951240539550781, 872585759381520384);
path.lineTo( 14.0216827392578125, 872665817571917824);
path.lineTo(7.699314117431640625, -3417320793833472);
path.moveTo(11.606547355651855469, 17.40966796875);
path.lineTo( 7642114886926860288, 21.08358001708984375);
path.lineTo(11.606547355651855469, 21.08358001708984375);
return path;
}
// Reduction from crbug.com/860453. Tests a case where a "missing" intersection
// requires the active edge list to go out-of-order.
static SkPath create_path_41() {
SkPath path;
path.moveTo(72154931603311689728.0, 330.95965576171875);
path.lineTo(24053266013925408768.0, 78.11376953125);
path.lineTo(1.2031099003292404941e+20, 387.168731689453125);
path.lineTo(68859835992355373056.0, 346.55047607421875);
path.lineTo(76451708695451009024.0, 337.780029296875);
path.moveTo(-20815817797613387776.0, 18065700622522384384.0);
path.lineTo(-72144121204987396096.0, 142.855804443359375);
path.lineTo(72144121204987396096.0, 325.184783935546875);
path.lineTo(1.2347242901040791552e+20, 18065700622522384384.0);
return path;
}
// Reduction from crbug.com/866319. Cause is edges that are collinear when tested from
// one side, but non-collinear when tested from the other.
static SkPath create_path_43() {
SkPath path;
path.moveTo( 307316821852160, -28808363114496);
path.lineTo( 307165222928384, -28794154909696);
path.lineTo( 307013691113472, -28779948802048);
path.lineTo( 306862159298560, -28765744791552);
path.lineTo( 306870313025536, -28766508154880);
path.lineTo( 307049695019008, -28783327313920);
path.lineTo( 307408660332544, -28816974020608);
return path;
}
// Reduction from crbug.com/966696
static SkPath create_path_44() {
SkPath path;
path.moveTo(114.4606170654296875, 186.443878173828125);
path.lineTo( 91.5394744873046875, 185.4189453125);
path.lineTo(306.45538330078125, 3203.986083984375);
path.moveTo(16276206965409972224.0, 815.59393310546875);
path.lineTo(-3.541605062372533207e+20, 487.7236328125);
path.lineTo(-3.541605062372533207e+20, 168.204071044921875);
path.lineTo(16276206965409972224.0, 496.07427978515625);
path.moveTo(-3.541605062372533207e+20, 167.00958251953125);
path.lineTo(-3.541605062372533207e+20, 488.32086181640625);
path.lineTo(16276206965409972224.0, 816.78839111328125);
path.lineTo(16276206965409972224.0, 495.47705078125);
return path;
}
// Reduction from crbug.com/966274.
static SkPath create_path_45() {
SkPath path;
path.moveTo( 706471854080, 379003666432);
path.lineTo( 706503180288, 379020443648);
path.lineTo( 706595717120, 379070087168);
path.lineTo( 706626060288, 379086372864);
path.lineTo( 706656141312, 379102527488);
path.lineTo( 706774171648, 379165835264);
path.lineTo( 706803073024, 379181334528);
path.lineTo( 706831712256, 379196702720);
path.lineTo( 706860154880, 379211939840);
path.lineTo( 706888335360, 379227078656);
path.lineTo( 706916253696, 379242053632);
path.lineTo( 706956820480, 379263811584);
path.lineTo( 706929098752, 379248934912);
path.lineTo( 706901114880, 379233927168);
path.lineTo( 706872934400, 379218821120);
path.lineTo( 706844491776, 379203551232);
path.lineTo( 706815787008, 379188183040);
path.lineTo( 706786885632, 379172651008);
path.lineTo( 706757722112, 379156987904);
path.lineTo( 706728296448, 379141226496);
path.lineTo( 706698608640, 379125301248);
path.lineTo( 706668724224, 379109244928);
path.lineTo( 706638577664, 379093090304);
path.lineTo( 706608168960, 379076771840);
path.lineTo( 706484174848, 379010252800);
return path;
}
// Reduction from crbug.com/969359. Inf generated by intersections
// causes NaN in subsequent intersections, leading to assert or hang.
static SkPath create_path_46() {
SkPath path;
path.moveTo(1.0321827899075254821e+37, -5.1199920965387697886e+37);
path.lineTo(-1.0321827899075254821e+37, 5.1199920965387697886e+37);
path.lineTo(-1.0425214946728668754e+37, 4.5731834042267216669e+37);
path.moveTo(-9.5077331762291841872e+36, 8.1304868292377430302e+37);
path.lineTo(9.5077331762291841872e+36, -8.1304868292377430302e+37);
path.lineTo(1.0795449417808426232e+37, 1.2246856113744539311e+37);
path.moveTo(-165.8018341064453125, -44.859375);
path.lineTo(-9.558702871563160835e+36, -7.9814405281448285475e+37);
path.lineTo(-9.4147814283168490381e+36, -8.3935116522790983488e+37);
return path;
}
static std::unique_ptr<GrFragmentProcessor> create_linear_gradient_processor(
GrRecordingContext* rContext) {
SkPoint pts[2] = { {0, 0}, {1, 1} };
SkColor colors[2] = { SK_ColorGREEN, SK_ColorBLUE };
sk_sp<SkShader> shader = SkGradientShader::MakeLinear(
pts, colors, nullptr, SK_ARRAY_COUNT(colors), SkTileMode::kClamp);
GrColorInfo colorInfo(GrColorType::kRGBA_8888, kPremul_SkAlphaType, nullptr);
SkSimpleMatrixProvider matrixProvider(SkMatrix::I());
return as_SB(shader)->asFragmentProcessor({rContext, matrixProvider, &colorInfo});
}
static void test_path(GrRecordingContext* rContext,
GrSurfaceDrawContext* surfaceDrawContext,
const SkPath& path,
const SkMatrix& matrix = SkMatrix::I(),
GrAAType aaType = GrAAType::kNone,
std::unique_ptr<GrFragmentProcessor> fp = nullptr) {
GrTriangulatingPathRenderer pr;
pr.setMaxVerbCount(100);
GrPaint paint;
paint.setXPFactory(GrPorterDuffXPFactory::Get(SkBlendMode::kSrc));
if (fp) {
paint.setColorFragmentProcessor(std::move(fp));
}
SkIRect clipConservativeBounds = SkIRect::MakeWH(surfaceDrawContext->width(),
surfaceDrawContext->height());
GrStyle style(SkStrokeRec::kFill_InitStyle);
GrStyledShape shape(path, style);
GrPathRenderer::DrawPathArgs args{rContext,
std::move(paint),
&GrUserStencilSettings::kUnused,
surfaceDrawContext,
nullptr,
&clipConservativeBounds,
&matrix,
&shape,
aaType,
false};
pr.drawPath(args);
}
DEF_GPUTEST_FOR_ALL_CONTEXTS(TriangulatingPathRendererTests, reporter, ctxInfo) {
auto ctx = ctxInfo.directContext();
auto rtc = GrSurfaceDrawContext::Make(
ctx, GrColorType::kRGBA_8888, nullptr, SkBackingFit::kApprox, {800, 800}, 1,
GrMipmapped::kNo, GrProtected::kNo, kTopLeft_GrSurfaceOrigin);
if (!rtc) {
return;
}
ctx->flushAndSubmit();
// Adding discard to appease vulkan validation warning about loading uninitialized data on draw
rtc->discard();
for (CreatePathFn createPath : kNonEdgeAAPaths) {
test_path(ctx, rtc.get(), createPath());
}
SkMatrix nonInvertibleMatrix = SkMatrix::Scale(0, 0);
std::unique_ptr<GrFragmentProcessor> fp(create_linear_gradient_processor(ctx));
test_path(ctx, rtc.get(), create_path_17(), nonInvertibleMatrix, GrAAType::kCoverage,
std::move(fp));
test_path(ctx, rtc.get(), create_path_20(), SkMatrix(), GrAAType::kCoverage);
test_path(ctx, rtc.get(), create_path_21(), SkMatrix(), GrAAType::kCoverage);
test_path(ctx, rtc.get(), create_path_25(), SkMatrix(), GrAAType::kCoverage);
test_path(ctx, rtc.get(), create_path_26(), SkMatrix(), GrAAType::kCoverage);
test_path(ctx, rtc.get(), create_path_27(), SkMatrix(), GrAAType::kCoverage);
test_path(ctx, rtc.get(), create_path_28(), SkMatrix(), GrAAType::kCoverage);
test_path(ctx, rtc.get(), create_path_31(), SkMatrix(), GrAAType::kCoverage);
test_path(ctx, rtc.get(), create_path_38(), SkMatrix(), GrAAType::kCoverage);
test_path(ctx, rtc.get(), create_path_41(), SkMatrix(), GrAAType::kCoverage);
test_path(ctx, rtc.get(), create_path_43(), SkMatrix(), GrAAType::kCoverage);
test_path(ctx, rtc.get(), create_path_44(), SkMatrix(), GrAAType::kCoverage);
test_path(ctx, rtc.get(), create_path_45(), SkMatrix(), GrAAType::kCoverage);
test_path(ctx, rtc.get(), create_path_46(), SkMatrix(), GrAAType::kCoverage);
}
namespace {
class SimpleVertexAllocator : public GrEagerVertexAllocator {
public:
void* lock(size_t stride, int eagerCount) override {
SkASSERT(!fPoints);
SkASSERT(stride == sizeof(SkPoint));
fPoints.reset(eagerCount);
return fPoints;
}
void unlock(int actualCount) override {}
SkPoint operator[](int idx) const { return fPoints[idx]; }
SkAutoTMalloc<SkPoint> fPoints;
};
} // namespace
struct Edge {
Edge reverse() const { return {fP1, fP0}; }
SkPoint fP0, fP1;
};
static bool operator<(const Edge& a, const Edge& b) {
if (a.fP0.fX != b.fP0.fX) {
return a.fP0.fX < b.fP0.fX;
}
if (a.fP0.fY != b.fP0.fY) {
return a.fP0.fY < b.fP0.fY;
}
if (a.fP1.fX != b.fP1.fX) {
return a.fP1.fX < b.fP1.fX;
}
if (a.fP1.fY != b.fP1.fY) {
return a.fP1.fY < b.fP1.fY;
}
return false;
}
using EdgeMap = std::map<Edge, int>;
static void add_edge(EdgeMap& edgeMap, SkPoint p0, SkPoint p1) {
Edge edge{p0, p1};
// First check if this edge already exists in reverse.
auto reverseIter = edgeMap.find(edge.reverse());
if (reverseIter != edgeMap.end()) {
--reverseIter->second;
} else {
++edgeMap[edge];
}
}
static void add_tri_edges(skiatest::Reporter* r, EdgeMap& edgeMap, const SkPoint pts[3]) {
for (int i = 0; i < 3; ++i) {
SkPoint p0=pts[i], p1=pts[(i+1)%3];
// The triangulator shouldn't output degenerate triangles.
REPORTER_ASSERT(r, p0 != p1);
add_edge(edgeMap, p0, p1);
}
}
static EdgeMap simplify(const EdgeMap& edges, SkPathFillType fillType) {
// Prune out the edges whose count went to zero, and reverse the edges whose count is negative.
EdgeMap simplifiedEdges;
for (auto [edge, count] : edges) {
// We should only have one ordering of any given edge.
SkASSERT(edges.find(edge.reverse()) == edges.end());
if (fillType == SkPathFillType::kEvenOdd) {
count = abs(count) & 1;
}
if (count > 0) {
simplifiedEdges[edge] = count;
} else if (count < 0) {
simplifiedEdges[edge.reverse()] = -count;
}
}
return simplifiedEdges;
}
static void verify_simple_inner_polygons(skiatest::Reporter* r, const char* shapeName,
SkPath path) {
for (auto fillType : {SkPathFillType::kWinding}) {
path.setFillType(fillType);
SkArenaAlloc arena(GrTriangulator::kArenaDefaultChunkSize);
GrInnerFanTriangulator::BreadcrumbTriangleList breadcrumbs;
SimpleVertexAllocator vertexAlloc;
int vertexCount;
{
bool isLinear;
GrInnerFanTriangulator triangulator(path, &arena);
vertexCount = triangulator.pathToTriangles(&vertexAlloc, &breadcrumbs, &isLinear);
}
// Count up all the triangulated edges.
EdgeMap trianglePlusBreadcrumbEdges;
for (int i = 0; i < vertexCount; i += 3) {
add_tri_edges(r, trianglePlusBreadcrumbEdges, vertexAlloc.fPoints.data() + i);
}
// Count up all the breadcrumb edges.
int breadcrumbCount = 0;
for (const auto* node = breadcrumbs.head(); node; node = node->fNext) {
add_tri_edges(r, trianglePlusBreadcrumbEdges, node->fPts);
++breadcrumbCount;
}
REPORTER_ASSERT(r, breadcrumbCount == breadcrumbs.count());
// The triangulated + breadcrumb edges should cancel out to the inner polygon edges.
trianglePlusBreadcrumbEdges = simplify(trianglePlusBreadcrumbEdges, path.getFillType());
// Build the inner polygon edges.
EdgeMap innerFanEdges;
SkPoint startPoint{}, lastPoint{};
for (auto [verb, pts, w] : SkPathPriv::Iterate(path)) {
switch (verb) {
case SkPathVerb::kMove:
if (lastPoint != startPoint) {
add_edge(innerFanEdges, lastPoint, startPoint);
}
lastPoint = startPoint = pts[0];
continue;
case SkPathVerb::kClose:
lastPoint = startPoint;
break;
case SkPathVerb::kLine:
lastPoint = pts[1];
break;
case SkPathVerb::kQuad:
case SkPathVerb::kConic:
lastPoint = pts[2];
break;
case SkPathVerb::kCubic:
lastPoint = pts[3];
break;
}
if (pts[0] != lastPoint) {
add_edge(innerFanEdges, pts[0], lastPoint);
}
}
if (lastPoint != startPoint) {
add_edge(innerFanEdges, lastPoint, startPoint);
}
innerFanEdges = simplify(innerFanEdges, path.getFillType());
// The triangulated + breadcrumb edges should cancel out to the inner polygon edges. First
// verify that every inner polygon edge can be found in the triangulation.
for (auto [edge, count] : innerFanEdges) {
auto it = trianglePlusBreadcrumbEdges.find(edge);
if (it != trianglePlusBreadcrumbEdges.end()) {
it->second -= count;
if (it->second == 0) {
trianglePlusBreadcrumbEdges.erase(it);
}
continue;
}
it = trianglePlusBreadcrumbEdges.find(edge.reverse());
if (it != trianglePlusBreadcrumbEdges.end()) {
it->second += count;
if (it->second == 0) {
trianglePlusBreadcrumbEdges.erase(it);
}
continue;
}
ERRORF(r, "error: %s: edge [%g,%g]:[%g,%g] not found in triangulation.",
shapeName, edge.fP0.fX, edge.fP0.fY, edge.fP1.fX, edge.fP1.fY);
return;
}
// Now verify that there are no spurious edges in the triangulation.
//
// NOTE: The triangulator's definition of wind isn't always correct for edges that run
// exactly parallel to the sweep (either vertical or horizontal edges). This doesn't
// actually matter though because T-junction artifacts don't happen on axis-aligned edges.
// Tolerate spurious edges that (1) come in pairs of 2, and (2) are either exactly
// horizontal or exactly vertical exclusively.
bool hasSpuriousHorz=false, hasSpuriousVert=false;
for (auto [edge, count] : trianglePlusBreadcrumbEdges) {
if (count % 2 == 0) {
if (edge.fP0.fX == edge.fP1.fX && !hasSpuriousVert) {
hasSpuriousHorz = true;
continue;
}
if (edge.fP0.fY == edge.fP1.fY && !hasSpuriousHorz) {
hasSpuriousVert = true;
continue;
}
}
ERRORF(r, "error: %s: spurious edge [%g,%g]:[%g,%g] found in triangulation.",
shapeName, edge.fP0.fX, edge.fP0.fY, edge.fP1.fX, edge.fP1.fY);
return;
}
}
}
DEF_TEST(GrInnerFanTriangulator, r) {
verify_simple_inner_polygons(r, "simple triangle", SkPath().lineTo(1,0).lineTo(0,1));
verify_simple_inner_polygons(r, "simple square", SkPath().lineTo(1,0).lineTo(1,1).lineTo(0,1));
verify_simple_inner_polygons(r, "concave polygon", SkPath()
.lineTo(1,0).lineTo(.5f,.5f).lineTo(1,1).lineTo(0,1));
verify_simple_inner_polygons(r, "double wound triangle", SkPath()
.lineTo(1,0).lineTo(0,1).lineTo(0,0).lineTo(1,0).lineTo(0,1));
verify_simple_inner_polygons(r, "self-intersecting bowtie", SkPath()
.lineTo(1,0).lineTo(0,1).lineTo(1,1));
verify_simple_inner_polygons(r, "asymmetrical bowtie", SkPath()
.lineTo(1,0).lineTo(0,1).lineTo(.1f,-.1f));
verify_simple_inner_polygons(r, "bowtie with extremely small section", SkPath()
.lineTo(1,0).lineTo(0,1).lineTo(1e-6f,-1e-6f));
verify_simple_inner_polygons(r, "intersecting squares", SkPath()
.lineTo(1,0).lineTo(1,1).lineTo(0,1)
.moveTo(.5f,.5f).lineTo(1.5f,.5f).lineTo(1.5f,1.5f).lineTo(.5f,1.5f).close());
verify_simple_inner_polygons(r, "6-point \"Star of David\"", SkPath()
.moveTo(cosf(-SK_ScalarPI/3), sinf(-SK_ScalarPI/3))
.lineTo(cosf(SK_ScalarPI/3), sinf(SK_ScalarPI/3))
.lineTo(cosf(SK_ScalarPI), sinf(SK_ScalarPI))
.moveTo(cosf(0), sinf(0))
.lineTo(cosf(2*SK_ScalarPI/3), sinf(2*SK_ScalarPI/3))
.lineTo(cosf(-2*SK_ScalarPI/3), sinf(-2*SK_ScalarPI/3)));
verify_simple_inner_polygons(r, "double wound \"Star of David\"", SkPath()
.moveTo(cosf(-SK_ScalarPI/3), sinf(-SK_ScalarPI/3))
.lineTo(cosf(SK_ScalarPI/3), sinf(SK_ScalarPI/3))
.lineTo(cosf(SK_ScalarPI), sinf(SK_ScalarPI))
.lineTo(cosf(-SK_ScalarPI/3), sinf(-SK_ScalarPI/3))
.lineTo(cosf(SK_ScalarPI/3), sinf(SK_ScalarPI/3))
.lineTo(cosf(SK_ScalarPI), sinf(SK_ScalarPI))
.moveTo(cosf(0), sinf(0))
.lineTo(cosf(2*SK_ScalarPI/3), sinf(2*SK_ScalarPI/3))
.lineTo(cosf(-2*SK_ScalarPI/3), sinf(-2*SK_ScalarPI/3)));
verify_simple_inner_polygons(r, "5-point star", ToolUtils::make_star(SkRect::MakeWH(100, 200)));
verify_simple_inner_polygons(r, "\"pointy\" intersecting triangles", SkPath()
.moveTo(0,-100).lineTo(-1e-6f,100).lineTo(1e-6f,100)
.moveTo(-100,0).lineTo(100,1e-6f).lineTo(100,-1e-6f));
verify_simple_inner_polygons(r, "overlapping rects with vertical collinear edges", SkPath()
.moveTo(0,0).lineTo(0,2).lineTo(1,2).lineTo(1,0)
.moveTo(0,1).lineTo(0,3).lineTo(1,3).lineTo(1,1));
verify_simple_inner_polygons(r, "overlapping rects with horizontal collinear edges", SkPath()
.lineTo(2,0).lineTo(2,1).lineTo(0,1)
.moveTo(1,0).lineTo(3,0).lineTo(3,1).lineTo(1,1).close());
for (int i = 0; i < (int)SK_ARRAY_COUNT(kNonEdgeAAPaths); ++i) {
verify_simple_inner_polygons(r, SkStringPrintf("kNonEdgeAAPaths[%i]", i).c_str(),
kNonEdgeAAPaths[i]());
}
SkRandom rand;
for (int i = 0; i < 50; ++i) {
auto randomPath = SkPath().moveTo(rand.nextF(), rand.nextF());
for (int j = 0; j < i; ++j) {
randomPath.lineTo(rand.nextF(), rand.nextF());
}
verify_simple_inner_polygons(r, SkStringPrintf("random_path_%i", i).c_str(), randomPath);
}
}
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