| Flutter Impeller |

color_filter.cc
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1 // Copyright 2013 The Flutter Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "impeller/aiks/color_filter.h"
6
7 #include <utility>
8 #include "impeller/entity/contents/filters/color_filter_contents.h"
9 #include "impeller/entity/contents/filters/filter_contents.h"
10 #include "impeller/entity/contents/filters/inputs/filter_input.h"
11 #include "impeller/geometry/color.h"
12
13 namespace impeller {
14
15 /*******************************************************************************
16 ******* ColorFilter
17 ******************************************************************************/
18
19 ColorFilter::ColorFilter() = default;
20
21 ColorFilter::~ColorFilter() = default;
22
23 std::shared_ptr<ColorFilter> ColorFilter::MakeBlend(BlendMode blend_mode,
24 Color color) {
25 return std::make_shared<BlendColorFilter>(blend_mode, color);
26 }
27
28 std::shared_ptr<ColorFilter> ColorFilter::MakeMatrix(ColorMatrix color_matrix) {
29 return std::make_shared<MatrixColorFilter>(color_matrix);
30 }
31
32 std::shared_ptr<ColorFilter> ColorFilter::MakeSrgbToLinear() {
33 return std::make_shared<SrgbToLinearColorFilter>();
34 }
35
36 std::shared_ptr<ColorFilter> ColorFilter::MakeLinearToSrgb() {
37 return std::make_shared<LinearToSrgbColorFilter>();
38 }
39
40 std::shared_ptr<ColorFilter> ColorFilter::MakeComposed(
41 const std::shared_ptr<ColorFilter>& outer,
42 const std::shared_ptr<ColorFilter>& inner) {
43 return std::make_shared<ComposedColorFilter>(outer, inner);
44 }
45
46 /*******************************************************************************
47 ******* BlendColorFilter
48 ******************************************************************************/
49
50 BlendColorFilter::BlendColorFilter(BlendMode blend_mode, Color color)
51 : blend_mode_(blend_mode), color_(color) {}
52
53 BlendColorFilter::~BlendColorFilter() = default;
54
55 std::shared_ptr<ColorFilterContents> BlendColorFilter::WrapWithGPUColorFilter(
56 std::shared_ptr<FilterInput> input,
57 ColorFilterContents::AbsorbOpacity absorb_opacity) const {
58 auto filter =
59 ColorFilterContents::MakeBlend(blend_mode_, {std::move(input)}, color_);
60 filter->SetAbsorbOpacity(absorb_opacity);
61 return filter;
62 }
63
64 ColorFilter::ColorFilterProc BlendColorFilter::GetCPUColorFilterProc() const {
65 return [filter_blend_mode = blend_mode_, filter_color = color_](Color color) {
66 return color.Blend(filter_color, filter_blend_mode);
67 };
68 }
69
70 std::shared_ptr<ColorFilter> BlendColorFilter::Clone() const {
71 return std::make_shared<BlendColorFilter>(*this);
72 }
73
74 /*******************************************************************************
75 ******* MatrixColorFilter
76 ******************************************************************************/
77
78 MatrixColorFilter::MatrixColorFilter(ColorMatrix color_matrix)
79 : color_matrix_(color_matrix) {}
80
81 MatrixColorFilter::~MatrixColorFilter() = default;
82
83 std::shared_ptr<ColorFilterContents> MatrixColorFilter::WrapWithGPUColorFilter(
84 std::shared_ptr<FilterInput> input,
85 ColorFilterContents::AbsorbOpacity absorb_opacity) const {
86 auto filter =
87 ColorFilterContents::MakeColorMatrix({std::move(input)}, color_matrix_);
88 filter->SetAbsorbOpacity(absorb_opacity);
89 return filter;
90 }
91
92 ColorFilter::ColorFilterProc MatrixColorFilter::GetCPUColorFilterProc() const {
93 return [color_matrix = color_matrix_](Color color) {
94 return color.ApplyColorMatrix(color_matrix);
95 };
96 }
97
98 std::shared_ptr<ColorFilter> MatrixColorFilter::Clone() const {
99 return std::make_shared<MatrixColorFilter>(*this);
100 }
101
102 /*******************************************************************************
103 ******* SrgbToLinearColorFilter
104 ******************************************************************************/
105
106 SrgbToLinearColorFilter::SrgbToLinearColorFilter() = default;
107
108 SrgbToLinearColorFilter::~SrgbToLinearColorFilter() = default;
109
110 std::shared_ptr<ColorFilterContents>
111 SrgbToLinearColorFilter::WrapWithGPUColorFilter(
112 std::shared_ptr<FilterInput> input,
113 ColorFilterContents::AbsorbOpacity absorb_opacity) const {
114 auto filter = ColorFilterContents::MakeSrgbToLinearFilter({std::move(input)});
115 filter->SetAbsorbOpacity(absorb_opacity);
116 return filter;
117 }
118
119 ColorFilter::ColorFilterProc SrgbToLinearColorFilter::GetCPUColorFilterProc()
120 const {
121 return [](Color color) { return color.SRGBToLinear(); };
122 }
123
124 std::shared_ptr<ColorFilter> SrgbToLinearColorFilter::Clone() const {
125 return std::make_shared<SrgbToLinearColorFilter>(*this);
126 }
127
128 /*******************************************************************************
129 ******* LinearToSrgbColorFilter
130 ******************************************************************************/
131
132 LinearToSrgbColorFilter::LinearToSrgbColorFilter() = default;
133
134 LinearToSrgbColorFilter::~LinearToSrgbColorFilter() = default;
135
136 std::shared_ptr<ColorFilterContents>
137 LinearToSrgbColorFilter::WrapWithGPUColorFilter(
138 std::shared_ptr<FilterInput> input,
139 ColorFilterContents::AbsorbOpacity absorb_opacity) const {
140 auto filter = ColorFilterContents::MakeSrgbToLinearFilter({std::move(input)});
141 filter->SetAbsorbOpacity(absorb_opacity);
142 return filter;
143 }
144
145 ColorFilter::ColorFilterProc LinearToSrgbColorFilter::GetCPUColorFilterProc()
146 const {
147 return [](Color color) { return color.LinearToSRGB(); };
148 }
149
150 std::shared_ptr<ColorFilter> LinearToSrgbColorFilter::Clone() const {
151 return std::make_shared<LinearToSrgbColorFilter>(*this);
152 }
153
154 /*******************************************************************************
155 ******* ComposedColorFilter
156 ******************************************************************************/
157
158 ComposedColorFilter::ComposedColorFilter(
159 const std::shared_ptr<ColorFilter>& outer,
160 const std::shared_ptr<ColorFilter>& inner)
161 : outer_(outer), inner_(inner) {}
162
163 ComposedColorFilter::~ComposedColorFilter() = default;
164
165 std::shared_ptr<ColorFilterContents>
166 ComposedColorFilter::WrapWithGPUColorFilter(
167 std::shared_ptr<FilterInput> input,
168 ColorFilterContents::AbsorbOpacity absorb_opacity) const {
169 std::shared_ptr<FilterContents> inner = inner_->WrapWithGPUColorFilter(
170 input, ColorFilterContents::AbsorbOpacity::kNo);
171 return outer_->WrapWithGPUColorFilter(FilterInput::Make(inner),
172 absorb_opacity);
173 }
174
175 // |ColorFilter|
176 ColorFilter::ColorFilterProc ComposedColorFilter::GetCPUColorFilterProc()
177 const {
178 return [inner = inner_, outer = outer_](Color color) {
179 auto inner_proc = inner->GetCPUColorFilterProc();
180 auto outer_proc = outer->GetCPUColorFilterProc();
181 return outer_proc(inner_proc(color));
182 };
183 }
184
185 // |ColorFilter|
186 std::shared_ptr<ColorFilter> ComposedColorFilter::Clone() const {
187 return std::make_shared<ComposedColorFilter>(outer_, inner_);
188 }
189
190 } // namespace impeller
impeller::MatrixColorFilter::~MatrixColorFilter
~MatrixColorFilter() override
impeller::MatrixColorFilter::GetCPUColorFilterProc
ColorFilterProc GetCPUColorFilterProc() const override
Returns a function that can be used to filter unpremultiplied Impeller Colors on the CPU.
Definition: color_filter.cc:92
impeller::BlendColorFilter::WrapWithGPUColorFilter
std::shared_ptr< ColorFilterContents > WrapWithGPUColorFilter(std::shared_ptr< FilterInput > input, ColorFilterContents::AbsorbOpacity absorb_opacity) const override
Wraps the given filter input with a GPU-based filter that will perform the color operation....
Definition: color_filter.cc:55
impeller::BlendColorFilter::BlendColorFilter
BlendColorFilter(BlendMode blend_mode, Color color)
Definition: color_filter.cc:50
impeller::BlendMode
BlendMode
Definition: color.h:59
impeller::Color
Definition: color.h:124
impeller::FilterInput::Make
static FilterInput::Ref Make(Variant input, bool msaa_enabled=true)
Definition: filter_input.cc:19
impeller::ColorFilter::ColorFilterProc
std::function< Color(Color)> ColorFilterProc
Definition: color_filter.h:25
impeller::ColorFilter::MakeComposed
static std::shared_ptr< ColorFilter > MakeComposed(const std::shared_ptr< ColorFilter > &outer, const std::shared_ptr< ColorFilter > &inner)
Definition: color_filter.cc:40
impeller::MatrixColorFilter::MatrixColorFilter
MatrixColorFilter(ColorMatrix color_matrix)
Definition: color_filter.cc:78
impeller::ColorFilterContents::AbsorbOpacity::kNo
@ kNo
impeller::ColorFilter::ColorFilter
ColorFilter()
impeller::MatrixColorFilter::WrapWithGPUColorFilter
std::shared_ptr< ColorFilterContents > WrapWithGPUColorFilter(std::shared_ptr< FilterInput > input, ColorFilterContents::AbsorbOpacity absorb_opacity) const override
Wraps the given filter input with a GPU-based filter that will perform the color operation....
Definition: color_filter.cc:83
impeller::BlendColorFilter::Clone
std::shared_ptr< ColorFilter > Clone() const override
Definition: color_filter.cc:70
impeller::ComposedColorFilter::GetCPUColorFilterProc
ColorFilterProc GetCPUColorFilterProc() const override
Returns a function that can be used to filter unpremultiplied Impeller Colors on the CPU.
Definition: color_filter.cc:176
impeller::SrgbToLinearColorFilter::Clone
std::shared_ptr< ColorFilter > Clone() const override
Definition: color_filter.cc:124
impeller::LinearToSrgbColorFilter::LinearToSrgbColorFilter
LinearToSrgbColorFilter()
filter_contents.h
impeller::ColorFilter::MakeBlend
static std::shared_ptr< ColorFilter > MakeBlend(BlendMode blend_mode, Color color)
Definition: color_filter.cc:23
impeller::LinearToSrgbColorFilter::Clone
std::shared_ptr< ColorFilter > Clone() const override
Definition: color_filter.cc:150
impeller::BlendColorFilter::~BlendColorFilter
~BlendColorFilter() override
impeller::ComposedColorFilter::WrapWithGPUColorFilter
std::shared_ptr< ColorFilterContents > WrapWithGPUColorFilter(std::shared_ptr< FilterInput > input, ColorFilterContents::AbsorbOpacity absorb_opacity) const override
Wraps the given filter input with a GPU-based filter that will perform the color operation....
Definition: color_filter.cc:166
impeller::SrgbToLinearColorFilter::WrapWithGPUColorFilter
std::shared_ptr< ColorFilterContents > WrapWithGPUColorFilter(std::shared_ptr< FilterInput > input, ColorFilterContents::AbsorbOpacity absorb_opacity) const override
Wraps the given filter input with a GPU-based filter that will perform the color operation....
Definition: color_filter.cc:111
impeller::SrgbToLinearColorFilter::~SrgbToLinearColorFilter
~SrgbToLinearColorFilter() override
impeller::ColorFilterContents::MakeSrgbToLinearFilter
static std::shared_ptr< ColorFilterContents > MakeSrgbToLinearFilter(FilterInput::Ref input)
Definition: color_filter_contents.cc:75
impeller::LinearToSrgbColorFilter::WrapWithGPUColorFilter
std::shared_ptr< ColorFilterContents > WrapWithGPUColorFilter(std::shared_ptr< FilterInput > input, ColorFilterContents::AbsorbOpacity absorb_opacity) const override
Wraps the given filter input with a GPU-based filter that will perform the color operation....
Definition: color_filter.cc:137
impeller::SrgbToLinearColorFilter::SrgbToLinearColorFilter
SrgbToLinearColorFilter()
filter_input.h
impeller::ComposedColorFilter::~ComposedColorFilter
~ComposedColorFilter() override
color_filter_contents.h
impeller::MatrixColorFilter::Clone
std::shared_ptr< ColorFilter > Clone() const override
Definition: color_filter.cc:98
impeller::ColorFilter::MakeMatrix
static std::shared_ptr< ColorFilter > MakeMatrix(ColorMatrix color_matrix)
Definition: color_filter.cc:28
impeller::BlendColorFilter::GetCPUColorFilterProc
ColorFilterProc GetCPUColorFilterProc() const override
Returns a function that can be used to filter unpremultiplied Impeller Colors on the CPU.
Definition: color_filter.cc:64
impeller::ComposedColorFilter::ComposedColorFilter
ComposedColorFilter(const std::shared_ptr< ColorFilter > &outer, const std::shared_ptr< ColorFilter > &inner)
Definition: color_filter.cc:158
impeller::ColorFilter::~ColorFilter
virtual ~ColorFilter()
impeller::ColorFilter::MakeLinearToSrgb
static std::shared_ptr< ColorFilter > MakeLinearToSrgb()
Definition: color_filter.cc:36
impeller::LinearToSrgbColorFilter::~LinearToSrgbColorFilter
~LinearToSrgbColorFilter() override
impeller::ComposedColorFilter::Clone
std::shared_ptr< ColorFilter > Clone() const override
Definition: color_filter.cc:186
impeller::ColorFilterContents::MakeColorMatrix
static std::shared_ptr< ColorFilterContents > MakeColorMatrix(FilterInput::Ref input, const ColorMatrix &color_matrix)
Definition: color_filter_contents.cc:58
color.h
color_filter.h
impeller::ColorFilter::MakeSrgbToLinear
static std::shared_ptr< ColorFilter > MakeSrgbToLinear()
Definition: color_filter.cc:32
impeller::LinearToSrgbColorFilter::GetCPUColorFilterProc
ColorFilterProc GetCPUColorFilterProc() const override
Returns a function that can be used to filter unpremultiplied Impeller Colors on the CPU.
Definition: color_filter.cc:145
impeller::SrgbToLinearColorFilter::GetCPUColorFilterProc
ColorFilterProc GetCPUColorFilterProc() const override
Returns a function that can be used to filter unpremultiplied Impeller Colors on the CPU.
Definition: color_filter.cc:119
impeller::ColorMatrix
Definition: color.h:117
impeller::ColorFilterContents::MakeBlend
static std::shared_ptr< ColorFilterContents > MakeBlend(BlendMode blend_mode, FilterInput::Vector inputs, std::optional< Color > foreground_color=std::nullopt)
the [inputs] are expected to be in the order of dst, src.
Definition: color_filter_contents.cc:17
impeller::ColorFilterContents::AbsorbOpacity
AbsorbOpacity
Definition: color_filter_contents.h:14
impeller
Definition: aiks_context.cc:10