| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "include/core/SkAlphaType.h" |
| #include "include/core/SkBitmap.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkColorType.h" |
| #include "include/core/SkImage.h" |
| #include "include/core/SkImageInfo.h" |
| #include "include/core/SkPixmap.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkSamplingOptions.h" |
| #include "include/core/SkScalar.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkSurface.h" |
| #include "include/core/SkTypes.h" |
| #include "include/private/base/SkMalloc.h" |
| #include "include/utils/SkRandom.h" |
| #include "src/core/SkMipmap.h" |
| #include "src/core/SkMipmapBuilder.h" |
| #include "tests/Test.h" |
| #include "tools/Resources.h" |
| |
| static void make_bitmap(SkBitmap* bm, int width, int height) { |
| bm->allocN32Pixels(width, height); |
| bm->eraseColor(SK_ColorWHITE); |
| } |
| |
| DEF_TEST(MipMap, reporter) { |
| SkBitmap bm; |
| SkRandom rand; |
| |
| for (int i = 0; i < 500; ++i) { |
| int width = 1 + rand.nextU() % 1000; |
| int height = 1 + rand.nextU() % 1000; |
| make_bitmap(&bm, width, height); |
| sk_sp<SkMipmap> mm(SkMipmap::Build(bm, nullptr)); |
| |
| REPORTER_ASSERT(reporter, mm->countLevels() == SkMipmap::ComputeLevelCount(width, height)); |
| REPORTER_ASSERT(reporter, !mm->extractLevel(SkSize::Make(SK_Scalar1, SK_Scalar1), |
| nullptr)); |
| REPORTER_ASSERT(reporter, !mm->extractLevel(SkSize::Make(SK_Scalar1 * 2, SK_Scalar1 * 2), |
| nullptr)); |
| |
| SkMipmap::Level prevLevel; |
| sk_bzero(&prevLevel, sizeof(prevLevel)); |
| |
| SkScalar scale = SK_Scalar1; |
| for (int j = 0; j < 30; ++j) { |
| scale = scale * 2 / 3; |
| |
| SkMipmap::Level level; |
| if (mm->extractLevel(SkSize::Make(scale, scale), &level)) { |
| REPORTER_ASSERT(reporter, level.fPixmap.addr()); |
| REPORTER_ASSERT(reporter, level.fPixmap.width() > 0); |
| REPORTER_ASSERT(reporter, level.fPixmap.height() > 0); |
| REPORTER_ASSERT(reporter, (int)level.fPixmap.rowBytes() >= level.fPixmap.width() * 4); |
| |
| if (prevLevel.fPixmap.addr()) { |
| REPORTER_ASSERT(reporter, level.fPixmap.width() <= prevLevel.fPixmap.width()); |
| REPORTER_ASSERT(reporter, level.fPixmap.height() <= prevLevel.fPixmap.height()); |
| } |
| prevLevel = level; |
| } |
| } |
| } |
| } |
| |
| static void test_mipmap_generation(int width, int height, int expectedMipLevelCount, |
| skiatest::Reporter* reporter) { |
| SkBitmap bm; |
| bm.allocN32Pixels(width, height); |
| bm.eraseColor(SK_ColorWHITE); |
| sk_sp<SkMipmap> mm(SkMipmap::Build(bm, nullptr)); |
| |
| const int mipLevelCount = mm->countLevels(); |
| REPORTER_ASSERT(reporter, mipLevelCount == expectedMipLevelCount); |
| REPORTER_ASSERT(reporter, mipLevelCount == SkMipmap::ComputeLevelCount(width, height)); |
| for (int i = 0; i < mipLevelCount; ++i) { |
| SkMipmap::Level level; |
| REPORTER_ASSERT(reporter, mm->getLevel(i, &level)); |
| // Make sure the mipmaps contain valid data and that the sizes are correct |
| REPORTER_ASSERT(reporter, level.fPixmap.addr()); |
| SkISize size = SkMipmap::ComputeLevelSize(width, height, i); |
| REPORTER_ASSERT(reporter, level.fPixmap.width() == size.width()); |
| REPORTER_ASSERT(reporter, level.fPixmap.height() == size.height()); |
| |
| // + 1 because SkMipmap does not include the base mipmap level. |
| int twoToTheMipLevel = 1 << (i + 1); |
| int currentWidth = width / twoToTheMipLevel; |
| int currentHeight = height / twoToTheMipLevel; |
| REPORTER_ASSERT(reporter, level.fPixmap.width() == currentWidth); |
| REPORTER_ASSERT(reporter, level.fPixmap.height() == currentHeight); |
| } |
| } |
| |
| DEF_TEST(MipMap_DirectLevelAccess, reporter) { |
| // create mipmap with invalid size |
| { |
| // SkMipmap current requires the dimensions be greater than 2x2 |
| SkBitmap bm; |
| bm.allocN32Pixels(1, 1); |
| bm.eraseColor(SK_ColorWHITE); |
| sk_sp<SkMipmap> mm(SkMipmap::Build(bm, nullptr)); |
| |
| REPORTER_ASSERT(reporter, mm == nullptr); |
| } |
| |
| // check small mipmap's count and levels |
| // There should be 5 mipmap levels generated: |
| // 16x16, 8x8, 4x4, 2x2, 1x1 |
| test_mipmap_generation(32, 32, 5, reporter); |
| |
| // check large mipmap's count and levels |
| // There should be 9 mipmap levels generated: |
| // 500x500, 250x250, 125x125, 62x62, 31x31, 15x15, 7x7, 3x3, 1x1 |
| test_mipmap_generation(1000, 1000, 9, reporter); |
| } |
| |
| struct LevelCountScenario { |
| int fWidth; |
| int fHeight; |
| int fExpectedLevelCount; |
| }; |
| |
| DEF_TEST(MipMap_ComputeLevelCount, reporter) { |
| const LevelCountScenario tests[] = { |
| // Test mipmaps with negative sizes |
| {-100, 100, 0}, |
| {100, -100, 0}, |
| {-100, -100, 0}, |
| |
| // Test mipmaps with 0, 1, 2 as dimensions |
| // (SkMipmap::Build requires a min size of 1) |
| // |
| // 0 |
| {0, 100, 0}, |
| {100, 0, 0}, |
| {0, 0, 0}, |
| // 1 |
| {1, 100, 6}, |
| {100, 1, 6}, |
| {1, 1, 0}, |
| // 2 |
| {2, 100, 6}, |
| {100, 2, 6}, |
| {2, 2, 1}, |
| |
| // Test a handful of boundaries such as 63x63 and 64x64 |
| {63, 63, 5}, |
| {64, 64, 6}, |
| {127, 127, 6}, |
| {128, 128, 7}, |
| {255, 255, 7}, |
| {256, 256, 8}, |
| |
| // Test different dimensions, such as 256x64 |
| {64, 129, 7}, |
| {255, 32, 7}, |
| {500, 1000, 9} |
| }; |
| |
| for (auto& currentTest : tests) { |
| int levelCount = SkMipmap::ComputeLevelCount(currentTest.fWidth, currentTest.fHeight); |
| REPORTER_ASSERT(reporter, currentTest.fExpectedLevelCount == levelCount); |
| } |
| } |
| |
| struct LevelSizeScenario { |
| int fBaseWidth; |
| int fBaseHeight; |
| int fLevel; |
| SkISize fExpectedMipMapLevelSize; |
| }; |
| |
| DEF_TEST(MipMap_ComputeLevelSize, reporter) { |
| const LevelSizeScenario tests[] = { |
| // Test mipmaps with negative sizes |
| {-100, 100, 0, SkISize::Make(0, 0)}, |
| {100, -100, 0, SkISize::Make(0, 0)}, |
| {-100, -100, 0, SkISize::Make(0, 0)}, |
| |
| // Test mipmaps with 0, 1, 2 as dimensions |
| // (SkMipmap::Build requires a min size of 1) |
| // |
| // 0 |
| {0, 100, 0, SkISize::Make(0, 0)}, |
| {100, 0, 0, SkISize::Make(0, 0)}, |
| {0, 0, 0, SkISize::Make(0, 0)}, |
| // 1 |
| |
| {1, 100, 0, SkISize::Make(1, 50)}, |
| {100, 1, 0, SkISize::Make(50, 1)}, |
| {1, 1, 0, SkISize::Make(0, 0)}, |
| // 2 |
| {2, 100, 0, SkISize::Make(1, 50)}, |
| {100, 2, 1, SkISize::Make(25, 1)}, |
| {2, 2, 0, SkISize::Make(1, 1)}, |
| |
| // Test a handful of cases |
| {63, 63, 2, SkISize::Make(7, 7)}, |
| {64, 64, 2, SkISize::Make(8, 8)}, |
| {127, 127, 2, SkISize::Make(15, 15)}, |
| {64, 129, 3, SkISize::Make(4, 8)}, |
| {255, 32, 6, SkISize::Make(1, 1)}, |
| {500, 1000, 1, SkISize::Make(125, 250)}, |
| }; |
| |
| for (auto& currentTest : tests) { |
| SkISize levelSize = SkMipmap::ComputeLevelSize(currentTest.fBaseWidth, |
| currentTest.fBaseHeight, |
| currentTest.fLevel); |
| REPORTER_ASSERT(reporter, currentTest.fExpectedMipMapLevelSize == levelSize); |
| } |
| } |
| |
| DEF_TEST(MipMap_F16, reporter) { |
| SkBitmap bmp; |
| bmp.allocPixels(SkImageInfo::Make(10, 10, kRGBA_F16_SkColorType, kPremul_SkAlphaType)); |
| bmp.eraseColor(0); |
| sk_sp<SkMipmap> mipmap(SkMipmap::Build(bmp, nullptr)); |
| } |
| |
| static void fill_in_mips(SkMipmapBuilder* builder, sk_sp<SkImage> img) { |
| int count = builder->countLevels(); |
| for (int i = 0; i < count; ++i) { |
| SkPixmap pm = builder->level(i); |
| auto surf = SkSurface::MakeRasterDirect(pm); |
| surf->getCanvas()->drawImageRect(img, SkRect::MakeIWH(pm.width(), pm.height()), |
| SkSamplingOptions()); |
| } |
| } |
| |
| DEF_TEST(image_mip_factory, reporter) { |
| // TODO: what do to about lazy images and mipmaps? |
| auto img = GetResourceAsImage("images/mandrill_128.png")->makeRasterImage(); |
| |
| REPORTER_ASSERT(reporter, !img->hasMipmaps()); |
| auto img1 = img->withDefaultMipmaps(); |
| REPORTER_ASSERT(reporter, img.get() != img1.get()); |
| REPORTER_ASSERT(reporter, img1->hasMipmaps()); |
| |
| SkMipmapBuilder builder(img->imageInfo()); |
| fill_in_mips(&builder, img); |
| |
| auto img2 = builder.attachTo(img); |
| REPORTER_ASSERT(reporter, img.get() != img2.get()); |
| REPORTER_ASSERT(reporter, img1.get() != img2.get()); |
| REPORTER_ASSERT(reporter, img2->hasMipmaps()); |
| } |
| |
| // Ensure we can't attach mips that don't "match" the image |
| // |
| DEF_TEST(image_mip_mismatch, reporter) { |
| auto check_fails = [reporter](sk_sp<SkImage> img, const SkImageInfo& info) { |
| SkMipmapBuilder builder(info); |
| fill_in_mips(&builder, img); |
| auto img2 = builder.attachTo(img); |
| // if withMipmaps() succeeds, it returns a new image, otherwise it returns the original |
| REPORTER_ASSERT(reporter, img.get() == img2.get()); |
| }; |
| |
| auto img = GetResourceAsImage("images/mandrill_128.png")->makeRasterImage(); |
| |
| // check size, colortype, and alphatype |
| |
| check_fails(img, img->imageInfo().makeWH(img->width() + 2, img->height() - 3)); |
| |
| SkASSERT(img->imageInfo().colorType() != kRGB_565_SkColorType); |
| check_fails(img, img->imageInfo().makeColorType(kRGB_565_SkColorType)); |
| |
| SkASSERT(img->imageInfo().alphaType() != kUnpremul_SkAlphaType); |
| check_fails(img, img->imageInfo().makeAlphaType(kUnpremul_SkAlphaType)); |
| } |