diff options
Diffstat (limited to 'tests/GradientTest.cpp')
-rw-r--r-- | tests/GradientTest.cpp | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/tests/GradientTest.cpp b/tests/GradientTest.cpp index 6a277d520e..cc94cbaf75 100644 --- a/tests/GradientTest.cpp +++ b/tests/GradientTest.cpp @@ -6,6 +6,7 @@ */ #include "SkCanvas.h" +#include "SkColorPriv.h" #include "SkColorShader.h" #include "SkGradientShader.h" #include "SkShader.h" @@ -233,10 +234,33 @@ static void test_linear_fuzz(skiatest::Reporter* reporter) { surface->getCanvas()->drawRect(r, paint); } +// https://bugs.chromium.org/p/skia/issues/detail?id=5023 +// We should still shade pixels for which the radius is exactly 0. +static void test_two_point_conical_zero_radius(skiatest::Reporter* reporter) { + SkAutoTUnref<SkSurface> surface(SkSurface::NewRasterN32Premul(5, 5)); + surface->getCanvas()->clear(SK_ColorRED); + + const SkColor colors[] = { SK_ColorGREEN, SK_ColorBLUE }; + SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical( + SkPoint::Make(2.5f, 2.5f), 0, + SkPoint::Make(3.0f, 3.0f), 10, + colors, nullptr, SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode)); + SkPaint p; + p.setShader(shader); + surface->getCanvas()->drawPaint(p); + + // r == 0 for the center pixel. + // verify that we draw it (no red bleed) + SkPMColor centerPMColor; + surface->readPixels(SkImageInfo::MakeN32Premul(1, 1), ¢erPMColor, sizeof(SkPMColor), 2, 2); + REPORTER_ASSERT(reporter, SkGetPackedR32(centerPMColor) == 0); +} + DEF_TEST(Gradient, reporter) { TestGradientShaders(reporter); TestConstantGradient(reporter); test_big_grad(reporter); test_nearly_vertical(reporter); test_linear_fuzz(reporter); + test_two_point_conical_zero_radius(reporter); } |