1cb93a386Sopenharmony_ci/*
2cb93a386Sopenharmony_ci * Copyright 2011 Google Inc.
3cb93a386Sopenharmony_ci *
4cb93a386Sopenharmony_ci * Use of this source code is governed by a BSD-style license that can be
5cb93a386Sopenharmony_ci * found in the LICENSE file.
6cb93a386Sopenharmony_ci */
7cb93a386Sopenharmony_ci
8cb93a386Sopenharmony_ci#include "include/core/SkBitmap.h"
9cb93a386Sopenharmony_ci#include "include/core/SkCanvas.h"
10cb93a386Sopenharmony_ci#include "include/core/SkShader.h"
11cb93a386Sopenharmony_ci#include "include/core/SkSurface.h"
12cb93a386Sopenharmony_ci#include "include/effects/SkGradientShader.h"
13cb93a386Sopenharmony_ci#include "src/shaders/SkColorShader.h"
14cb93a386Sopenharmony_ci#include "tests/Test.h"
15cb93a386Sopenharmony_ci#include "tools/ToolUtils.h"
16cb93a386Sopenharmony_ci
17cb93a386Sopenharmony_cistatic void test_bitmap(skiatest::Reporter* reporter) {
18cb93a386Sopenharmony_ci    SkImageInfo info = SkImageInfo::MakeN32Premul(2, 2);
19cb93a386Sopenharmony_ci
20cb93a386Sopenharmony_ci    SkBitmap bmp;
21cb93a386Sopenharmony_ci    bmp.setInfo(info);
22cb93a386Sopenharmony_ci
23cb93a386Sopenharmony_ci    // test 1: bitmap without pixel data
24cb93a386Sopenharmony_ci    auto shader = bmp.makeShader(SkSamplingOptions());
25cb93a386Sopenharmony_ci    REPORTER_ASSERT(reporter, shader);
26cb93a386Sopenharmony_ci    REPORTER_ASSERT(reporter, !shader->isOpaque());
27cb93a386Sopenharmony_ci
28cb93a386Sopenharmony_ci    // From this point on, we have pixels
29cb93a386Sopenharmony_ci    bmp.allocPixels(info);
30cb93a386Sopenharmony_ci
31cb93a386Sopenharmony_ci    // test 2: not opaque by default
32cb93a386Sopenharmony_ci    shader = bmp.makeShader(SkSamplingOptions());
33cb93a386Sopenharmony_ci    REPORTER_ASSERT(reporter, shader);
34cb93a386Sopenharmony_ci    REPORTER_ASSERT(reporter, !shader->isOpaque());
35cb93a386Sopenharmony_ci
36cb93a386Sopenharmony_ci    // test 3: explicitly opaque
37cb93a386Sopenharmony_ci    bmp.setAlphaType(kOpaque_SkAlphaType);
38cb93a386Sopenharmony_ci    shader = bmp.makeShader(SkSamplingOptions());
39cb93a386Sopenharmony_ci    REPORTER_ASSERT(reporter, shader);
40cb93a386Sopenharmony_ci    REPORTER_ASSERT(reporter, shader->isOpaque());
41cb93a386Sopenharmony_ci
42cb93a386Sopenharmony_ci    // test 4: explicitly not opaque
43cb93a386Sopenharmony_ci    bmp.setAlphaType(kPremul_SkAlphaType);
44cb93a386Sopenharmony_ci    shader = bmp.makeShader(SkSamplingOptions());
45cb93a386Sopenharmony_ci    REPORTER_ASSERT(reporter, shader);
46cb93a386Sopenharmony_ci    REPORTER_ASSERT(reporter, !shader->isOpaque());
47cb93a386Sopenharmony_ci}
48cb93a386Sopenharmony_ci
49cb93a386Sopenharmony_cistatic void test_gradient(skiatest::Reporter* reporter) {
50cb93a386Sopenharmony_ci    SkPoint pts[2];
51cb93a386Sopenharmony_ci    pts[0].iset(0, 0);
52cb93a386Sopenharmony_ci    pts[1].iset(1, 0);
53cb93a386Sopenharmony_ci    SkColor colors[2];
54cb93a386Sopenharmony_ci    SkScalar pos[2] = {SkIntToScalar(0), SkIntToScalar(1)};
55cb93a386Sopenharmony_ci    int count = 2;
56cb93a386Sopenharmony_ci    SkTileMode mode = SkTileMode::kClamp;
57cb93a386Sopenharmony_ci
58cb93a386Sopenharmony_ci    // test 1: all opaque
59cb93a386Sopenharmony_ci    colors[0] = SkColorSetARGB(0xFF, 0, 0, 0);
60cb93a386Sopenharmony_ci    colors[1] = SkColorSetARGB(0xFF, 0, 0, 0);
61cb93a386Sopenharmony_ci    auto grad = SkGradientShader::MakeLinear(pts, colors, pos, count, mode);
62cb93a386Sopenharmony_ci    REPORTER_ASSERT(reporter, grad);
63cb93a386Sopenharmony_ci    REPORTER_ASSERT(reporter, grad->isOpaque());
64cb93a386Sopenharmony_ci
65cb93a386Sopenharmony_ci    // test 2: all 0 alpha
66cb93a386Sopenharmony_ci    colors[0] = SkColorSetARGB(0, 0, 0, 0);
67cb93a386Sopenharmony_ci    colors[1] = SkColorSetARGB(0, 0, 0, 0);
68cb93a386Sopenharmony_ci    grad = SkGradientShader::MakeLinear(pts, colors, pos, count, mode);
69cb93a386Sopenharmony_ci    REPORTER_ASSERT(reporter, grad);
70cb93a386Sopenharmony_ci    REPORTER_ASSERT(reporter, !grad->isOpaque());
71cb93a386Sopenharmony_ci
72cb93a386Sopenharmony_ci    // test 3: one opaque, one transparent
73cb93a386Sopenharmony_ci    colors[0] = SkColorSetARGB(0xFF, 0, 0, 0);
74cb93a386Sopenharmony_ci    colors[1] = SkColorSetARGB(0x40, 0, 0, 0);
75cb93a386Sopenharmony_ci    grad = SkGradientShader::MakeLinear(pts, colors, pos, count, mode);
76cb93a386Sopenharmony_ci    REPORTER_ASSERT(reporter, grad);
77cb93a386Sopenharmony_ci    REPORTER_ASSERT(reporter, !grad->isOpaque());
78cb93a386Sopenharmony_ci
79cb93a386Sopenharmony_ci    // test 4: test 3, swapped
80cb93a386Sopenharmony_ci    colors[0] = SkColorSetARGB(0x40, 0, 0, 0);
81cb93a386Sopenharmony_ci    colors[1] = SkColorSetARGB(0xFF, 0, 0, 0);
82cb93a386Sopenharmony_ci    grad = SkGradientShader::MakeLinear(pts, colors, pos, count, mode);
83cb93a386Sopenharmony_ci    REPORTER_ASSERT(reporter, grad);
84cb93a386Sopenharmony_ci    REPORTER_ASSERT(reporter, !grad->isOpaque());
85cb93a386Sopenharmony_ci}
86cb93a386Sopenharmony_ci
87cb93a386Sopenharmony_cistatic void test_color(skiatest::Reporter* reporter) {
88cb93a386Sopenharmony_ci    SkColorShader colorShader1(SkColorSetARGB(0,0,0,0));
89cb93a386Sopenharmony_ci    REPORTER_ASSERT(reporter, !colorShader1.isOpaque());
90cb93a386Sopenharmony_ci    SkColorShader colorShader2(SkColorSetARGB(0xFF,0,0,0));
91cb93a386Sopenharmony_ci    REPORTER_ASSERT(reporter, colorShader2.isOpaque());
92cb93a386Sopenharmony_ci    SkColorShader colorShader3(SkColorSetARGB(0x7F,0,0,0));
93cb93a386Sopenharmony_ci    REPORTER_ASSERT(reporter, !colorShader3.isOpaque());
94cb93a386Sopenharmony_ci}
95cb93a386Sopenharmony_ci
96cb93a386Sopenharmony_ciDEF_TEST(ShaderOpacity, reporter) {
97cb93a386Sopenharmony_ci    test_gradient(reporter);
98cb93a386Sopenharmony_ci    test_color(reporter);
99cb93a386Sopenharmony_ci    test_bitmap(reporter);
100cb93a386Sopenharmony_ci}
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