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| author |  Stephen White <senorblanco@chromium.org> | 2017-06-12 11:43:18 -0400 |
|---|---|---|
| committer |  Skia Commit-Bot <skia-commit-bot@chromium.org> | 2017-06-12 17:44:23 +0000 |
| commit | e3a0be73a61147379ab0ce33a0e773c072c47908 (patch) | |
| tree | a4ed24b3f8bca843a67a54621eccab36b245e68b /tests | |
| parent | 50b84682c897093d35f9ce5d351574a65d3a8219 (diff) | |
GrTessellator: fix two NaN issues.
If a point in the path rounds to +inf/-inf, the intersection code can
produce NaN, which is unsortable. Fix: ignore non-finite intersections.
Quadratic interpolation can sometimes produce NaN, which will never
satisfy the flatness criterion. Abort if any of the interpolated points
are non-finite.
Bug:732023
Change-Id: If5881796e589c75b8f74459f42d00918619713a2
Reviewed-on: https://skia-review.googlesource.com/19467
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Stephen White <senorblanco@chromium.org>
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/TessellatingPathRendererTests.cpp | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/tests/TessellatingPathRendererTests.cpp b/tests/TessellatingPathRendererTests.cpp index e2fca2eb82..c41e9cf3c5 100644 --- a/tests/TessellatingPathRendererTests.cpp +++ b/tests/TessellatingPathRendererTests.cpp @@ -326,6 +326,26 @@ static SkPath create_path_20() { 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; +} + +// A quad which becomes NaN when interpolated. +static SkPath create_path_22() { + SkPath path; + path.moveTo(-5.71889e+13f, 1.36759e+09f); + path.quadTo(2.45472e+19f, -3.12406e+15f, -2.19589e+18f, 2.79462e+14f); + return path; +} + static sk_sp<GrFragmentProcessor> create_linear_gradient_processor(GrContext* ctx) { SkPoint pts[2] = { {0, 0}, {1, 1} }; SkColor colors[2] = { SK_ColorGREEN, SK_ColorBLUE }; @@ -403,5 +423,7 @@ DEF_GPUTEST_FOR_ALL_CONTEXTS(TessellatingPathRendererTests, reporter, ctxInfo) { test_path(ctx, rtc.get(), create_path_18()); test_path(ctx, rtc.get(), create_path_19()); 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_22()); } #endif |