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ensure that negative zeros are still ignored when computing isIdentity()

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crbug.com/162747



git-svn-id: http://skia.googlecode.com/svn/trunk@8761 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
reed@google.com 2013-04-19 12:25:00 +00:00
parent f685a22971
commit 87f99cb543
1 changed files with 11 additions and 0 deletions
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11
tests/Matrix44Test.cpp
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@ -231,6 +231,17 @@ static void test_gettype(skiatest::Reporter* reporter) {
matrix.set(3, 2, 1);
REPORTER_ASSERT(reporter, matrix.getType() & SkMatrix44::kPerspective_Mask);
// ensure that negative zero is treated as zero
SkMScalar dx = 0;
SkMScalar dy = 0;
SkMScalar dz = 0;
matrix.setTranslate(-dx, -dy, -dz);
REPORTER_ASSERT(reporter, matrix.isIdentity());
matrix.preTranslate(-dx, -dy, -dz);
REPORTER_ASSERT(reporter, matrix.isIdentity());
matrix.postTranslate(-dx, -dy, -dz);
REPORTER_ASSERT(reporter, matrix.isIdentity());
}
static void test_common_angles(skiatest::Reporter* reporter) {