1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
|
/*
* 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 "Test.h"
#include "SkBicubicImageFilter.h"
#include "SkBitmap.h"
#include "SkBitmapDevice.h"
#include "SkBitmapSource.h"
#include "SkCanvas.h"
#include "SkColorMatrixFilter.h"
#include "SkColorFilterImageFilter.h"
#include "SkDeviceImageFilterProxy.h"
#include "SkLightingImageFilter.h"
#include "SkRect.h"
class ImageFilterTest {
public:
static const int kBitmapSize = 4;
static void make_small_bitmap(SkBitmap& bitmap) {
bitmap.setConfig(SkBitmap::kARGB_8888_Config, kBitmapSize, kBitmapSize);
bitmap.allocPixels();
SkBitmapDevice device(bitmap);
SkCanvas canvas(&device);
canvas.clear(0x00000000);
SkPaint darkPaint;
darkPaint.setColor(0xFF804020);
SkPaint lightPaint;
lightPaint.setColor(0xFF244484);
const int i = kBitmapSize / 4;
for (int y = 0; y < kBitmapSize; y += i) {
for (int x = 0; x < kBitmapSize; x += i) {
canvas.save();
canvas.translate(SkIntToScalar(x), SkIntToScalar(y));
canvas.drawRect(SkRect::MakeXYWH(0, 0,
SkIntToScalar(i),
SkIntToScalar(i)), darkPaint);
canvas.drawRect(SkRect::MakeXYWH(SkIntToScalar(i),
0,
SkIntToScalar(i),
SkIntToScalar(i)), lightPaint);
canvas.drawRect(SkRect::MakeXYWH(0,
SkIntToScalar(i),
SkIntToScalar(i),
SkIntToScalar(i)), lightPaint);
canvas.drawRect(SkRect::MakeXYWH(SkIntToScalar(i),
SkIntToScalar(i),
SkIntToScalar(i),
SkIntToScalar(i)), darkPaint);
canvas.restore();
}
}
}
static SkImageFilter* make_scale(float amount, SkImageFilter* input = NULL) {
SkScalar s = amount;
SkScalar matrix[20] = { s, 0, 0, 0, 0,
0, s, 0, 0, 0,
0, 0, s, 0, 0,
0, 0, 0, s, 0 };
SkAutoTUnref<SkColorFilter> filter(new SkColorMatrixFilter(matrix));
return SkColorFilterImageFilter::Create(filter, input);
}
static SkImageFilter* make_grayscale(SkImageFilter* input = NULL, const SkImageFilter::CropRect* cropRect = NULL) {
SkScalar matrix[20];
memset(matrix, 0, 20 * sizeof(SkScalar));
matrix[0] = matrix[5] = matrix[10] = 0.2126f;
matrix[1] = matrix[6] = matrix[11] = 0.7152f;
matrix[2] = matrix[7] = matrix[12] = 0.0722f;
matrix[18] = 1.0f;
SkAutoTUnref<SkColorFilter> filter(new SkColorMatrixFilter(matrix));
return SkColorFilterImageFilter::Create(filter, input, cropRect);
}
static SkImageFilter* make_mode_blue(SkImageFilter* input = NULL) {
SkAutoTUnref<SkColorFilter> filter(
SkColorFilter::CreateModeFilter(SK_ColorBLUE, SkXfermode::kSrcIn_Mode));
return SkColorFilterImageFilter::Create(filter, input);
}
static void Test(skiatest::Reporter* reporter) {
{
// Check that two non-clipping color matrices concatenate into a single filter.
SkAutoTUnref<SkImageFilter> halfBrightness(make_scale(0.5f));
SkAutoTUnref<SkImageFilter> quarterBrightness(make_scale(0.5f, halfBrightness));
REPORTER_ASSERT(reporter, NULL == quarterBrightness->getInput(0));
}
{
// Check that a clipping color matrix followed by a grayscale does not concatenate into a single filter.
SkAutoTUnref<SkImageFilter> doubleBrightness(make_scale(2.0f));
SkAutoTUnref<SkImageFilter> halfBrightness(make_scale(0.5f, doubleBrightness));
REPORTER_ASSERT(reporter, NULL != halfBrightness->getInput(0));
}
{
// Check that a color filter image filter without a crop rect can be
// expressed as a color filter.
SkAutoTUnref<SkImageFilter> gray(make_grayscale());
REPORTER_ASSERT(reporter, true == gray->asColorFilter(NULL));
}
{
// Check that a color filter image filter with a crop rect cannot
// be expressed as a color filter.
SkImageFilter::CropRect cropRect(SkRect::MakeXYWH(0, 0, 100, 100));
SkAutoTUnref<SkImageFilter> grayWithCrop(make_grayscale(NULL, &cropRect));
REPORTER_ASSERT(reporter, false == grayWithCrop->asColorFilter(NULL));
}
{
// Tests pass by not asserting
SkBitmap bitmap, result;
make_small_bitmap(bitmap);
result.setConfig(SkBitmap::kARGB_8888_Config, kBitmapSize, kBitmapSize);
result.allocPixels();
{
// This tests for :
// 1 ) location at (0,0,1)
SkPoint3 location(0, 0, SK_Scalar1);
// 2 ) location and target at same value
SkPoint3 target(location.fX, location.fY, location.fZ);
// 3 ) large negative specular exponent value
SkScalar specularExponent = -1000;
SkAutoTUnref<SkImageFilter> bmSrc(new SkBitmapSource(bitmap));
SkPaint paint;
paint.setImageFilter(SkLightingImageFilter::CreateSpotLitSpecular(
location, target, specularExponent, 180,
0xFFFFFFFF, SK_Scalar1, SK_Scalar1, SK_Scalar1,
bmSrc))->unref();
SkCanvas canvas(result);
SkRect r = SkRect::MakeWH(SkIntToScalar(kBitmapSize),
SkIntToScalar(kBitmapSize));
canvas.drawRect(r, paint);
}
{
// This tests for scale bringing width to 0
SkSize scale = SkSize::Make(-0.001f, SK_Scalar1);
SkAutoTUnref<SkImageFilter> bmSrc(new SkBitmapSource(bitmap));
SkAutoTUnref<SkBicubicImageFilter> bicubic(
SkBicubicImageFilter::CreateMitchell(scale, bmSrc));
SkBitmapDevice device(bitmap);
SkDeviceImageFilterProxy proxy(&device);
SkIPoint loc = SkIPoint::Make(0, 0);
// An empty input should early return and return false
REPORTER_ASSERT(reporter,
!bicubic->filterImage(&proxy, bitmap, SkMatrix::I(), &result, &loc));
}
}
}
};
#include "TestClassDef.h"
DEFINE_TESTCLASS("ImageFilterTest", ImageFilterTestClass, ImageFilterTest::Test)
|
