SkiaBehaviorTests.cpp revision ab12c1fe73734a18ac19a06b97f276528f6d027a 
1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "tests/common/TestUtils.h"
18
19#include <gtest/gtest.h>
20#include <SkColorMatrixFilter.h>
21#include <SkColorSpace.h>
22#include <SkImagePriv.h>
23#include <SkShader.h>
24
25using namespace android;
26using namespace android::uirenderer;
27
28SkBitmap createSkBitmap(int width, int height) {
29    SkBitmap bitmap;
30    SkImageInfo info = SkImageInfo::Make(width, height, kN32_SkColorType, kPremul_SkAlphaType);
31    bitmap.setInfo(info);
32    bitmap.allocPixels(info);
33    return bitmap;
34}
35
36/**
37 * 1x1 bitmaps must not be optimized into solid color shaders, since HWUI can't
38 * compose/render color shaders
39 */
40TEST(SkiaBehavior, CreateBitmapShader1x1) {
41    SkBitmap origBitmap = createSkBitmap(1, 1);
42    sk_sp<SkShader> s = SkMakeBitmapShader(
43            origBitmap,
44            SkShader::kClamp_TileMode,
45            SkShader::kRepeat_TileMode,
46            nullptr,
47            kNever_SkCopyPixelsMode,
48            nullptr);
49
50    SkBitmap bitmap;
51    SkShader::TileMode xy[2];
52    ASSERT_TRUE(s->isABitmap(&bitmap, nullptr, xy))
53        << "1x1 bitmap shader must query as bitmap shader";
54    EXPECT_EQ(SkShader::kClamp_TileMode, xy[0]);
55    EXPECT_EQ(SkShader::kRepeat_TileMode, xy[1]);
56    EXPECT_EQ(origBitmap.pixelRef(), bitmap.pixelRef());
57}
58
59TEST(SkiaBehavior, genIds) {
60    SkBitmap bitmap = createSkBitmap(100, 100);
61    uint32_t genId = bitmap.getGenerationID();
62    bitmap.notifyPixelsChanged();
63    EXPECT_NE(genId, bitmap.getGenerationID());
64}
65
66TEST(SkiaBehavior, lightingColorFilter_simplify) {
67    {
68        sk_sp<SkColorFilter> filter(
69                SkColorMatrixFilter::MakeLightingFilter(0x11223344, 0));
70
71        SkColor observedColor;
72        SkBlendMode observedMode;
73        ASSERT_TRUE(filter->asColorMode(&observedColor, &observedMode));
74        EXPECT_EQ(0xFF223344, observedColor);
75        EXPECT_EQ(SkBlendMode::kModulate, observedMode);
76    }
77
78    {
79        sk_sp<SkColorFilter> failFilter(
80                SkColorMatrixFilter::MakeLightingFilter(0x11223344, 0x1));
81        EXPECT_FALSE(failFilter->asColorMode(nullptr, nullptr));
82    }
83}
84
85TEST(SkiaBehavior, porterDuffCreateIsCached) {
86    SkPaint paint;
87    paint.setBlendMode(SkBlendMode::kOverlay);
88    auto expected = paint.getBlendMode();
89    paint.setBlendMode(SkBlendMode::kClear);
90    ASSERT_NE(expected, paint.getBlendMode());
91    paint.setBlendMode(SkBlendMode::kOverlay);
92    ASSERT_EQ(expected, paint.getBlendMode());
93}
94
95TEST(SkiaBehavior, srgbColorSpaceIsSingleton) {
96    sk_sp<SkColorSpace> sRGB1 = SkColorSpace::MakeNamed(SkColorSpace::kSRGB_Named);
97    sk_sp<SkColorSpace> sRGB2 = SkColorSpace::MakeNamed(SkColorSpace::kSRGB_Named);
98    ASSERT_EQ(sRGB1.get(), sRGB2.get());
99}
100