64dbb89efc
If a previously-enclosing edge coincides exactly with the current vertex, there are no two adjacent edges which enclose the vertex. Since find_enclosing_edges() ensures that the left enclosing edge is to the left of the vertex, the fix is to split the right enclosing edge on the current vertex and restart intersection tests. Bug: 716720 Change-Id: Id26c5b92a6d6139f348e99554638cded37e81a8e Reviewed-on: https://skia-review.googlesource.com/15261 Reviewed-by: Brian Salomon <bsalomon@google.com> Commit-Queue: Stephen White <senorblanco@chromium.org>
354 lines
14 KiB
C++
354 lines
14 KiB
C++
/*
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* Copyright 2015 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "Test.h"
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#include "SkPath.h"
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#if SK_SUPPORT_GPU
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#include "GrClip.h"
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#include "GrContext.h"
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#include "SkGradientShader.h"
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#include "ops/GrTessellatingPathRenderer.h"
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/*
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* These tests pass by not crashing, hanging or asserting in Debug.
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*/
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// Tests active edges made inactive by splitting.
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// Also tests active edge list forced into an invalid ordering by
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// splitting (mopped up in cleanup_active_edges()).
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static SkPath create_path_0() {
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SkPath path;
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path.moveTo(229.127044677734375f, 67.34100341796875f);
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path.lineTo(187.8097381591796875f, -6.7729740142822265625f);
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path.lineTo(171.411407470703125f, 50.94266510009765625f);
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path.lineTo(245.5253753662109375f, 9.6253643035888671875f);
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path.moveTo(208.4683990478515625f, 30.284009933471679688f);
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path.lineTo(171.411407470703125f, 50.94266510009765625f);
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path.lineTo(187.8097381591796875f, -6.7729740142822265625f);
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return path;
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}
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// Intersections which fall exactly on the current vertex, and require
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// a restart of the intersection checking.
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static SkPath create_path_1() {
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SkPath path;
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path.moveTo(314.483551025390625f, 486.246002197265625f);
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path.lineTo(385.41949462890625f, 532.8087158203125f);
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path.lineTo(373.232879638671875f, 474.05938720703125f);
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path.lineTo(326.670166015625f, 544.995361328125f);
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path.moveTo(349.951507568359375f, 509.52734375f);
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path.lineTo(373.232879638671875f, 474.05938720703125f);
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path.lineTo(385.41949462890625f, 532.8087158203125f);
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return path;
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}
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// Tests active edges which are removed by splitting.
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static SkPath create_path_2() {
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SkPath path;
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path.moveTo(343.107391357421875f, 613.62176513671875f);
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path.lineTo(426.632415771484375f, 628.5740966796875f);
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path.lineTo(392.3460693359375f, 579.33544921875f);
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path.lineTo(377.39373779296875f, 662.86041259765625f);
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path.moveTo(384.869873046875f, 621.097900390625f);
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path.lineTo(392.3460693359375f, 579.33544921875f);
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path.lineTo(426.632415771484375f, 628.5740966796875f);
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return path;
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}
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// Collinear edges merged in set_top().
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// Also, an intersection between left and right enclosing edges which
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// falls above the current vertex.
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static SkPath create_path_3() {
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SkPath path;
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path.moveTo(545.95751953125f, 791.69854736328125f);
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path.lineTo(612.05816650390625f, 738.494140625f);
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path.lineTo(552.4056396484375f, 732.0460205078125f);
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path.lineTo(605.61004638671875f, 798.14666748046875f);
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path.moveTo(579.00787353515625f, 765.0963134765625f);
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path.lineTo(552.4056396484375f, 732.0460205078125f);
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path.lineTo(612.05816650390625f, 738.494140625f);
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return path;
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}
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// Tests active edges which are made inactive by set_top().
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static SkPath create_path_4() {
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SkPath path;
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path.moveTo(819.2725830078125f, 751.77447509765625f);
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path.lineTo(820.70904541015625f, 666.933837890625f);
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path.lineTo(777.57049560546875f, 708.63592529296875f);
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path.lineTo(862.4111328125f, 710.0723876953125f);
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path.moveTo(819.99078369140625f, 709.3541259765625f);
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path.lineTo(777.57049560546875f, 708.63592529296875f);
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path.lineTo(820.70904541015625f, 666.933837890625f);
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return path;
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}
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static SkPath create_path_5() {
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SkPath path;
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path.moveTo(823.33209228515625f, 749.052734375f);
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path.lineTo(823.494873046875f, 664.20013427734375f);
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path.lineTo(780.9871826171875f, 706.5450439453125f);
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path.lineTo(865.8397216796875f, 706.70782470703125f);
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path.moveTo(823.4134521484375f, 706.6263427734375f);
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path.lineTo(780.9871826171875f, 706.5450439453125f);
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path.lineTo(823.494873046875f, 664.20013427734375f);
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return path;
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}
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static SkPath create_path_6() {
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SkPath path;
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path.moveTo(954.862548828125f, 562.8349609375f);
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path.lineTo(899.32818603515625f, 498.679443359375f);
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path.lineTo(895.017578125f, 558.52435302734375f);
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path.lineTo(959.17315673828125f, 502.990081787109375f);
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path.moveTo(927.0953369140625f, 530.7572021484375f);
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path.lineTo(895.017578125f, 558.52435302734375f);
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path.lineTo(899.32818603515625f, 498.679443359375f);
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return path;
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}
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static SkPath create_path_7() {
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SkPath path;
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path.moveTo(958.5330810546875f, 547.35516357421875f);
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path.lineTo(899.93109130859375f, 485.989013671875f);
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path.lineTo(898.54901123046875f, 545.97308349609375f);
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path.lineTo(959.9151611328125f, 487.37109375f);
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path.moveTo(929.2320556640625f, 516.67205810546875f);
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path.lineTo(898.54901123046875f, 545.97308349609375f);
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path.lineTo(899.93109130859375f, 485.989013671875f);
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return path;
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}
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static SkPath create_path_8() {
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SkPath path;
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path.moveTo(389.8609619140625f, 369.326873779296875f);
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path.lineTo(470.6290283203125f, 395.33697509765625f);
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path.lineTo(443.250030517578125f, 341.9478759765625f);
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path.lineTo(417.239959716796875f, 422.7159423828125f);
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path.moveTo(430.244964599609375f, 382.3319091796875f);
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path.lineTo(443.250030517578125f, 341.9478759765625f);
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path.lineTo(470.6290283203125f, 395.33697509765625f);
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return path;
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}
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static SkPath create_path_9() {
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SkPath path;
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path.moveTo(20, 20);
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path.lineTo(50, 80);
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path.lineTo(20, 80);
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path.moveTo(80, 50);
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path.lineTo(50, 50);
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path.lineTo(20, 50);
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return path;
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}
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static SkPath create_path_10() {
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SkPath path;
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path.moveTo(257.19439697265625f, 320.876617431640625f);
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path.lineTo(190.113037109375f, 320.58978271484375f);
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path.lineTo(203.64404296875f, 293.8145751953125f);
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path.moveTo(203.357177734375f, 360.896026611328125f);
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path.lineTo(216.88824462890625f, 334.120819091796875f);
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path.lineTo(230.41925048828125f, 307.345611572265625f);
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return path;
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}
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// A degenerate segments case, where both upper and lower segments of
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// a split edge must remain active.
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static SkPath create_path_11() {
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SkPath path;
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path.moveTo(231.9331207275390625f, 306.2012939453125f);
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path.lineTo(191.4859161376953125f, 306.04547119140625f);
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path.lineTo(231.0659332275390625f, 300.2642822265625f);
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path.moveTo(189.946807861328125f, 302.072265625f);
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path.lineTo(179.79705810546875f, 294.859771728515625f);
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path.lineTo(191.0016021728515625f, 296.165679931640625f);
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path.moveTo(150.8942108154296875f, 304.900146484375f);
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path.lineTo(179.708892822265625f, 297.849029541015625f);
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path.lineTo(190.4742279052734375f, 299.11895751953125f);
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return path;
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}
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// Handle the case where edge.dist(edge.fTop) != 0.0.
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static SkPath create_path_12() {
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SkPath path;
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path.moveTo( 0.0f, 400.0f);
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path.lineTo( 138.0f, 202.0f);
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path.lineTo( 0.0f, 202.0f);
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path.moveTo( 12.62693023681640625f, 250.57464599609375f);
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path.lineTo( 8.13896942138671875f, 254.556884765625f);
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path.lineTo(-18.15641021728515625f, 220.40203857421875f);
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path.lineTo(-15.986493110656738281f, 219.6513519287109375f);
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path.moveTo( 36.931194305419921875f, 282.485504150390625f);
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path.lineTo( 15.617521286010742188f, 261.2901611328125f);
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path.lineTo( 10.3829498291015625f, 252.565765380859375f);
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path.lineTo(-16.165292739868164062f, 222.646026611328125f);
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return path;
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}
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// A degenerate segments case which exercises inactive edges being
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// made active by splitting.
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static SkPath create_path_13() {
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SkPath path;
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path.moveTo(690.62127685546875f, 509.25555419921875f);
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path.lineTo(99.336181640625f, 511.71405029296875f);
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path.lineTo(708.362548828125f, 512.4349365234375f);
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path.lineTo(729.9940185546875f, 516.3114013671875f);
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path.lineTo(738.708984375f, 518.76995849609375f);
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path.lineTo(678.3463134765625f, 510.0819091796875f);
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path.lineTo(681.21795654296875f, 504.81378173828125f);
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path.moveTo(758.52764892578125f, 521.55963134765625f);
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path.lineTo(719.1549072265625f, 514.50372314453125f);
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path.lineTo(689.59063720703125f, 512.0628662109375f);
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path.lineTo(679.78216552734375f, 507.447845458984375f);
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return path;
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}
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// Tests vertices which become "orphaned" (ie., no connected edges)
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// after simplification.
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static SkPath create_path_14() {
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SkPath path;
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path.moveTo(217.326019287109375f, 166.4752960205078125f);
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path.lineTo(226.279266357421875f, 170.929473876953125f);
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path.lineTo(234.3973388671875f, 177.0623626708984375f);
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path.lineTo(262.0921630859375f, 188.746124267578125f);
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path.moveTo(196.23638916015625f, 174.0722198486328125f);
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path.lineTo(416.15277099609375f, 180.138214111328125f);
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path.lineTo(192.651947021484375f, 304.0228271484375f);
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return path;
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}
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static SkPath create_path_15() {
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SkPath path;
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path.moveTo( 0.0f, 0.0f);
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path.lineTo(10000.0f, 0.0f);
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path.lineTo( 0.0f, -1.0f);
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path.lineTo(10000.0f, 0.000001f);
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path.lineTo( 0.0f, -30.0f);
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return path;
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}
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// Reduction of Nebraska-StateSeal.svg. Floating point error causes the
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// same edge to be added to more than one poly on the same side.
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static SkPath create_path_16() {
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SkPath path;
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path.moveTo(170.8199920654296875, 491.86700439453125);
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path.lineTo(173.7649993896484375, 489.7340087890625);
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path.lineTo(174.1450958251953125, 498.545989990234375);
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path.lineTo( 171.998992919921875, 500.88201904296875);
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path.moveTo(168.2922515869140625, 498.66265869140625);
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path.lineTo(169.8589935302734375, 497.94500732421875);
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path.lineTo( 172, 500.88299560546875);
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path.moveTo( 169.555267333984375, 490.70111083984375);
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path.lineTo(173.7649993896484375, 489.7340087890625);
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path.lineTo( 170.82000732421875, 491.86700439453125);
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return path;
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}
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// A simple concave path. Test this with a non-invertible matrix.
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static SkPath create_path_17() {
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SkPath path;
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path.moveTo(20, 20);
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path.lineTo(80, 20);
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path.lineTo(30, 30);
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path.lineTo(20, 80);
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return path;
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}
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// A shape with a vertex collinear to the right hand edge.
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// This messes up find_enclosing_edges.
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static SkPath create_path_18() {
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SkPath path;
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path.moveTo(80, 20);
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path.lineTo(80, 60);
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path.lineTo(20, 60);
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path.moveTo(80, 50);
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path.lineTo(80, 80);
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path.lineTo(20, 80);
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return path;
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}
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static sk_sp<GrFragmentProcessor> create_linear_gradient_processor(GrContext* ctx) {
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SkPoint pts[2] = { {0, 0}, {1, 1} };
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SkColor colors[2] = { SK_ColorGREEN, SK_ColorBLUE };
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sk_sp<SkShader> shader = SkGradientShader::MakeLinear(
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pts, colors, nullptr, SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode);
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SkShader::AsFPArgs args(
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ctx, &SkMatrix::I(), &SkMatrix::I(), SkFilterQuality::kLow_SkFilterQuality, nullptr);
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return shader->asFragmentProcessor(args);
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}
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static void test_path(GrContext* ctx,
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GrRenderTargetContext* renderTargetContext,
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const SkPath& path,
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const SkMatrix& matrix = SkMatrix::I(),
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GrAAType aaType = GrAAType::kNone,
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sk_sp<GrFragmentProcessor> fp = nullptr) {
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GrTessellatingPathRenderer tess;
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GrPaint paint;
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paint.setXPFactory(GrPorterDuffXPFactory::Get(SkBlendMode::kSrc));
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if (fp) {
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paint.addColorFragmentProcessor(fp);
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}
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GrNoClip noClip;
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GrStyle style(SkStrokeRec::kFill_InitStyle);
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GrShape shape(path, style);
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GrPathRenderer::DrawPathArgs args{ctx,
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std::move(paint),
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&GrUserStencilSettings::kUnused,
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renderTargetContext,
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&noClip,
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&matrix,
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&shape,
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aaType,
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false};
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tess.drawPath(args);
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}
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DEF_GPUTEST_FOR_ALL_CONTEXTS(TessellatingPathRendererTests, reporter, ctxInfo) {
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GrContext* ctx = ctxInfo.grContext();
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sk_sp<GrRenderTargetContext> rtc(ctx->makeDeferredRenderTargetContext(
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SkBackingFit::kApprox,
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800, 800,
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kRGBA_8888_GrPixelConfig,
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nullptr,
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0,
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kTopLeft_GrSurfaceOrigin));
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if (!rtc) {
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return;
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}
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ctx->flush();
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test_path(ctx, rtc.get(), create_path_0());
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test_path(ctx, rtc.get(), create_path_1());
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test_path(ctx, rtc.get(), create_path_2());
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test_path(ctx, rtc.get(), create_path_3());
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test_path(ctx, rtc.get(), create_path_4());
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test_path(ctx, rtc.get(), create_path_5());
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test_path(ctx, rtc.get(), create_path_6());
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test_path(ctx, rtc.get(), create_path_7());
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test_path(ctx, rtc.get(), create_path_8());
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test_path(ctx, rtc.get(), create_path_9());
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test_path(ctx, rtc.get(), create_path_10());
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test_path(ctx, rtc.get(), create_path_11());
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test_path(ctx, rtc.get(), create_path_12());
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test_path(ctx, rtc.get(), create_path_13());
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test_path(ctx, rtc.get(), create_path_14());
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test_path(ctx, rtc.get(), create_path_15());
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test_path(ctx, rtc.get(), create_path_16());
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SkMatrix nonInvertibleMatrix = SkMatrix::MakeScale(0, 0);
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sk_sp<GrFragmentProcessor> fp(create_linear_gradient_processor(ctx));
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test_path(ctx, rtc.get(), create_path_17(), nonInvertibleMatrix, GrAAType::kCoverage, fp);
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test_path(ctx, rtc.get(), create_path_18());
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}
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#endif
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