From 3601f280dc400cb75167393b0a2b6670b5f25ea4 Mon Sep 17 00:00:00 2001 From: reed Date: Fri, 5 Feb 2016 11:18:39 -0800 Subject: add kRGBA_F16_SkColorType BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1666343002 Review URL: https://codereview.chromium.org/1666343002 --- tests/Float16Test.cpp | 52 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 tests/Float16Test.cpp (limited to 'tests/Float16Test.cpp') diff --git a/tests/Float16Test.cpp b/tests/Float16Test.cpp new file mode 100644 index 0000000000..0a2c3d5d6b --- /dev/null +++ b/tests/Float16Test.cpp @@ -0,0 +1,52 @@ +/* + * Copyright 2016 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include "Test.h" +#include "SkColor.h" +#include "SkHalf.h" +#include "SkPixmap.h" + +static bool eq_within_half_float(float a, float b) { + const float kTolerance = 1.0f / (1 << (8 + 10)); + + SkHalf ha = SkFloatToHalf(a); + SkHalf hb = SkFloatToHalf(b); + float a2 = SkHalfToFloat(ha); + float b2 = SkHalfToFloat(hb); + return fabsf(a2 - b2) <= kTolerance; +} + +static bool eq_within_half_float(const SkPM4f& a, const SkPM4f& b) { + for (int i = 0; i < 4; ++i) { + if (!eq_within_half_float(a.fVec[i], b.fVec[i])) { + return false; + } + } + return true; +} + +DEF_TEST(color_half_float, reporter) { + const int w = 100; + const int h = 100; + + SkImageInfo info = SkImageInfo::Make(w, h, kRGBA_F16_SkColorType, kPremul_SkAlphaType); + + SkAutoPixmapStorage pm; + pm.alloc(info); + REPORTER_ASSERT(reporter, pm.getSafeSize() == SkToSizeT(w * h * sizeof(uint64_t))); + + SkColor4f c4 { 0.5f, 1, 0.5f, 0.25f }; + pm.erase(c4); + + SkPM4f origpm4 = c4.premul(); + for (int y = 0; y < pm.height(); ++y) { + for (int x = 0; x < pm.width(); ++x) { + SkPM4f pm4 = SkPM4f::FromF16(pm.addrF16(x, y)); + REPORTER_ASSERT(reporter, eq_within_half_float(origpm4, pm4)); + } + } +} -- cgit v1.2.3