diff options
Diffstat (limited to 'tests/SkColor4fTest.cpp')
-rw-r--r-- | tests/SkColor4fTest.cpp | 46 |
1 files changed, 44 insertions, 2 deletions
diff --git a/tests/SkColor4fTest.cpp b/tests/SkColor4fTest.cpp index 48a0c38286..b9dcd0d35e 100644 --- a/tests/SkColor4fTest.cpp +++ b/tests/SkColor4fTest.cpp @@ -168,9 +168,9 @@ DEF_TEST(Color4f_colorfilter, reporter) { SkColorFilter* (*fFact)(); bool fSupports4f; } recs[] = { - { make_mode_cf, false }, + { make_mode_cf, true }, { make_mx_cf, true }, - { make_compose_cf, false }, + { make_compose_cf, true }, }; // prepare the src @@ -197,3 +197,45 @@ DEF_TEST(Color4f_colorfilter, reporter) { } } } + +/////////////////////////////////////////////////////////////////////////////////////////////////// + +typedef SkPM4f (*SkXfermodeProc4f)(const SkPM4f& src, const SkPM4f& dst); + +static bool compare_procs(SkXfermodeProc proc32, SkXfermodeProc4f proc4f) { + const float kTolerance = 1.0f / 255; + + const SkColor colors[] = { + 0, 0xFF000000, 0xFFFFFFFF, 0x80FF0000 + }; + + for (auto s32 : colors) { + SkPMColor s_pm32 = SkPreMultiplyColor(s32); + SkPM4f s_pm4f = SkColor4f::FromColor(s32).premul(); + for (auto d32 : colors) { + SkPMColor d_pm32 = SkPreMultiplyColor(d32); + SkPM4f d_pm4f = SkColor4f::FromColor(d32).premul(); + + SkPMColor r32 = proc32(s_pm32, d_pm32); + SkPM4f r4f = proc4f(s_pm4f, d_pm4f); + + SkPM4f r32_4f = SkPM4f::FromPMColor(r32); + if (!nearly_equal(r4f, r32_4f, kTolerance)) { + return false; + } + } + } + return true; +} + +// Check that our Proc and Proc4f return (nearly) the same results +// +DEF_TEST(Color4f_xfermode_proc4f, reporter) { + // TODO: extend xfermodes so that all cases can be tested. + // + for (int mode = SkXfermode::kClear_Mode; mode <= SkXfermode::kScreen_Mode; ++mode) { + SkXfermodeProc proc32 = SkXfermode::GetProc((SkXfermode::Mode)mode); + SkXfermodeProc4f proc4f = SkXfermode::GetProc4f((SkXfermode::Mode)mode); + REPORTER_ASSERT(reporter, compare_procs(proc32, proc4f)); + } +} |