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
|
/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm.h"
#include "SkCanvas.h"
#include "SkColorPriv.h"
#include "SkShader.h"
#include "SkSurface.h"
#include "SkColorMatrixFilter.h"
#include "SkGradientShader.h"
static sk_sp<SkShader> make_opaque_color() {
return SkShader::MakeColorShader(0xFFFF0000);
}
static sk_sp<SkShader> make_alpha_color() {
return SkShader::MakeColorShader(0x80FF0000);
}
static sk_sp<SkColorFilter> make_cf_null() {
return nullptr;
}
static sk_sp<SkColorFilter> make_cf0() {
SkColorMatrix cm;
cm.setSaturation(0.75f);
return SkColorFilter::MakeMatrixFilterRowMajor255(cm.fMat);
}
static sk_sp<SkColorFilter> make_cf1() {
SkColorMatrix cm;
cm.setSaturation(0.75f);
auto a = SkColorFilter::MakeMatrixFilterRowMajor255(cm.fMat);
// CreateComposedFilter will try to concat these two matrices, resulting in a single
// filter (which is good for speed). For this test, we want to force a real compose of
// these two, so our inner filter has a scale-up, which disables the optimization of
// combining the two matrices.
cm.setScale(1.1f, 0.9f, 1);
return a->makeComposed(SkColorFilter::MakeMatrixFilterRowMajor255(cm.fMat));
}
static sk_sp<SkColorFilter> make_cf2() {
return SkColorFilter::MakeModeFilter(0x8044CC88, SkBlendMode::kSrcATop);
}
static void draw_into_canvas(SkCanvas* canvas) {
const SkRect r = SkRect::MakeWH(50, 100);
sk_sp<SkShader> (*shaders[])() { make_opaque_color, make_alpha_color };
sk_sp<SkColorFilter> (*filters[])() { make_cf_null, make_cf0, make_cf1, make_cf2 };
SkPaint paint;
for (auto shProc : shaders) {
paint.setShader(shProc());
for (auto cfProc : filters) {
paint.setColorFilter(cfProc());
canvas->drawRect(r, paint);
canvas->translate(60, 0);
}
}
}
DEF_SIMPLE_GM(color4f, canvas, 1024, 260) {
canvas->translate(10, 10);
SkPaint bg;
// need the target to be opaque, so we can draw it to the screen
// even if it holds sRGB values.
bg.setColor(0xFFFFFFFF);
sk_sp<SkColorSpace> colorSpaces[]{
nullptr,
SkColorSpace::MakeSRGB()
};
for (auto colorSpace : colorSpaces) {
const SkImageInfo info = SkImageInfo::Make(1024, 100, kN32_SkColorType, kPremul_SkAlphaType,
colorSpace);
auto surface(SkSurface::MakeRaster(info));
surface->getCanvas()->drawPaint(bg);
draw_into_canvas(surface->getCanvas());
surface->draw(canvas, 0, 0, nullptr);
canvas->translate(0, 120);
}
}
///////////////////////////////////////////////////////////////////////////////////////////////////
#include "SkColorSpace.h"
DEF_SIMPLE_GM(color4shader, canvas, 360, 480) {
canvas->translate(10, 10);
auto srgb = SkColorSpace::MakeSRGB();
auto spin = srgb->makeColorSpin(); // RGB -> GBR
const SkColor4f colors[] {
{ 1, 0, 0, 1 },
{ 0, 1, 0, 1 },
{ 0, 0, 1, 1 },
{ 0.5, 0.5, 0.5, 1 },
};
SkPaint paint;
SkRect r = SkRect::MakeWH(100, 100);
for (const auto& c4 : colors) {
sk_sp<SkShader> shaders[] {
SkShader::MakeColorShader(c4, nullptr),
SkShader::MakeColorShader(c4, srgb),
SkShader::MakeColorShader(c4, spin),
};
canvas->save();
for (const auto& s : shaders) {
paint.setShader(s);
canvas->drawRect(r, paint);
canvas->translate(r.width() * 6 / 5, 0);
}
canvas->restore();
canvas->translate(0, r.height() * 6 / 5);
}
}
|
