static void test_treatAsSprite(skiatest::Reporter* reporter) {
SkMatrix mat;
SkISize size;
SkRandom rand;
SkPaint noaaPaint;
SkPaint aaPaint;
aaPaint.setAntiAlias(true);
// assert: translate-only no-aa can always be treated as sprite
for (int i = 0; i < 1000; ++i) {
rand_matrix(&mat, rand, SkMatrix::kTranslate_Mask);
for (int j = 0; j < 1000; ++j) {
rand_size(&size, rand);
REPORTER_ASSERT(reporter, SkTreatAsSprite(mat, size, noaaPaint));
}
}
// assert: rotate/perspect is never treated as sprite
for (int i = 0; i < 1000; ++i) {
rand_matrix(&mat, rand, SkMatrix::kAffine_Mask | SkMatrix::kPerspective_Mask);
for (int j = 0; j < 1000; ++j) {
rand_size(&size, rand);
REPORTER_ASSERT(reporter, !SkTreatAsSprite(mat, size, noaaPaint));
REPORTER_ASSERT(reporter, !SkTreatAsSprite(mat, size, aaPaint));
}
}
size.set(500, 600);
const SkScalar tooMuchSubpixel = 100.1f;
mat.setTranslate(tooMuchSubpixel, 0);
REPORTER_ASSERT(reporter, !SkTreatAsSprite(mat, size, aaPaint));
mat.setTranslate(0, tooMuchSubpixel);
REPORTER_ASSERT(reporter, !SkTreatAsSprite(mat, size, aaPaint));
const SkScalar tinySubPixel = 100.02f;
mat.setTranslate(tinySubPixel, 0);
REPORTER_ASSERT(reporter, SkTreatAsSprite(mat, size, aaPaint));
mat.setTranslate(0, tinySubPixel);
REPORTER_ASSERT(reporter, SkTreatAsSprite(mat, size, aaPaint));
const SkScalar twoThirds = SK_Scalar1 * 2 / 3;
const SkScalar bigScale = (size.width() + twoThirds) / size.width();
mat.setScale(bigScale, bigScale);
REPORTER_ASSERT(reporter, !SkTreatAsSprite(mat, size, noaaPaint));
REPORTER_ASSERT(reporter, !SkTreatAsSprite(mat, size, aaPaint));
const SkScalar oneThird = SK_Scalar1 / 3;
const SkScalar smallScale = (size.width() + oneThird) / size.width();
mat.setScale(smallScale, smallScale);
REPORTER_ASSERT(reporter, SkTreatAsSprite(mat, size, noaaPaint));
REPORTER_ASSERT(reporter, !SkTreatAsSprite(mat, size, aaPaint));
const SkScalar oneFortyth = SK_Scalar1 / 40;
const SkScalar tinyScale = (size.width() + oneFortyth) / size.width();
mat.setScale(tinyScale, tinyScale);
REPORTER_ASSERT(reporter, SkTreatAsSprite(mat, size, noaaPaint));
REPORTER_ASSERT(reporter, SkTreatAsSprite(mat, size, aaPaint));
}
static bool treat_as_sprite(const SkMatrix& mat, const SkISize& size,
unsigned bits) {
return SkTreatAsSprite(mat, size.width(), size.height(), bits);
}