45 lines
1.2 KiB
C++
45 lines
1.2 KiB
C++
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/*
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* Copyright 2018 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SkBlitMask.h"
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#include "SkColorPriv.h"
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#include "SkMask.h"
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#include "Test.h"
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static void test_opaque_dest(skiatest::Reporter* reporter, SkMask::Format format) {
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const auto& row_proc = SkBlitMask::RowFactory(SkColorType::kN32_SkColorType, format,
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static_cast<SkBlitMask::RowFlags>(0));
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SkPMColor src[256],
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dst[256];
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uint8_t aa[256];
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// Coverage -> [0..255]
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for (size_t i = 0; i < 256; ++i) {
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aa[i] = static_cast<uint8_t>(i);
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}
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// src -> [0..255]
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for (size_t src_a = 0; src_a < 256; ++src_a) {
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memset(src, src_a, sizeof(src));
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// dst -> 0xff (always opaque)
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memset(dst, 0xff, sizeof(dst));
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row_proc(dst, aa, src, 256);
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for (size_t i = 0; i < 256; ++i) {
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REPORTER_ASSERT(reporter, SkGetPackedA32(dst[i]) == 0xff);
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}
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}
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}
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// Verifies that D32 dest remains opaque for any (src_alpha, coverage) combination.
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DEF_TEST(BlitMask_OpaqueD32, reporter) {
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test_opaque_dest(reporter, SkMask::Format::kA8_Format);
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}
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