| Flutter Impeller |

matrix_filter_contents.h
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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 #ifndef FLUTTER_IMPELLER_ENTITY_CONTENTS_FILTERS_MATRIX_FILTER_CONTENTS_H_
6 #define FLUTTER_IMPELLER_ENTITY_CONTENTS_FILTERS_MATRIX_FILTER_CONTENTS_H_
7
8 #include "impeller/entity/contents/filters/filter_contents.h"
9 #include "impeller/entity/contents/filters/inputs/filter_input.h"
10
11 namespace impeller {
12
13 class MatrixFilterContents final : public FilterContents {
14 public:
15 MatrixFilterContents();
16
17 ~MatrixFilterContents() override;
18
19 void SetMatrix(Matrix matrix);
20
21 // |FilterContents|
22 void SetRenderingMode(Entity::RenderingMode rendering_mode) override;
23
24 // |FilterContents|
25 bool IsTranslationOnly() const override;
26
27 void SetSamplerDescriptor(SamplerDescriptor desc);
28
29 // |FilterContents|
30 std::optional<Rect> GetFilterCoverage(
31 const FilterInput::Vector& inputs,
32 const Entity& entity,
33 const Matrix& effect_transform) const override;
34
35 private:
36 // |FilterContents|
37 std::optional<Entity> RenderFilter(
38 const FilterInput::Vector& input_textures,
39 const ContentContext& renderer,
40 const Entity& entity,
41 const Matrix& effect_transform,
42 const Rect& coverage,
43 const std::optional<Rect>& coverage_hint) const override;
44
45 // |FilterContents|
46 std::optional<Rect> GetFilterSourceCoverage(
47 const Matrix& effect_transform,
48 const Rect& output_limit) const override;
49
50 Matrix matrix_;
51 SamplerDescriptor sampler_descriptor_ = {};
52 Entity::RenderingMode rendering_mode_ = Entity::RenderingMode::kDirect;
53
54 MatrixFilterContents(const MatrixFilterContents&) = delete;
55
56 MatrixFilterContents& operator=(const MatrixFilterContents&) = delete;
57 };
58
59 } // namespace impeller
60
61 #endif // FLUTTER_IMPELLER_ENTITY_CONTENTS_FILTERS_MATRIX_FILTER_CONTENTS_H_
impeller::MatrixFilterContents::SetRenderingMode
void SetRenderingMode(Entity::RenderingMode rendering_mode) override
Marks this filter chain as applying in a subpass scenario.
Definition: matrix_filter_contents.cc:17
impeller::MatrixFilterContents::SetMatrix
void SetMatrix(Matrix matrix)
Definition: matrix_filter_contents.cc:13
impeller::MatrixFilterContents
Definition: matrix_filter_contents.h:13
impeller::SamplerDescriptor
Definition: sampler_descriptor.h:15
impeller::Entity
Definition: entity.h:20
impeller::MatrixFilterContents::~MatrixFilterContents
~MatrixFilterContents() override
filter_contents.h
impeller::Entity::RenderingMode::kDirect
@ kDirect
filter_input.h
impeller::MatrixFilterContents::MatrixFilterContents
MatrixFilterContents()
impeller::Entity::RenderingMode
RenderingMode
Definition: entity.h:27
impeller::MatrixFilterContents::GetFilterCoverage
std::optional< Rect > GetFilterCoverage(const FilterInput::Vector &inputs, const Entity &entity, const Matrix &effect_transform) const override
Internal utility method for |GetLocalCoverage| that computes the output coverage of this filter acros...
Definition: matrix_filter_contents.cc:124
impeller::FilterInput::Vector
std::vector< FilterInput::Ref > Vector
Definition: filter_input.h:33
impeller::MatrixFilterContents::IsTranslationOnly
bool IsTranslationOnly() const override
Returns true if this filter graph doesn't perform any basis transforms to the filtered content....
Definition: matrix_filter_contents.cc:23
impeller
Definition: allocation.cc:12
impeller::MatrixFilterContents::SetSamplerDescriptor
void SetSamplerDescriptor(SamplerDescriptor desc)
Definition: matrix_filter_contents.cc:27
impeller::ContentContext
Definition: content_context.h:366
impeller::TRect< Scalar >
impeller::Matrix
A 4x4 matrix using column-major storage.
Definition: matrix.h:37
impeller::FilterContents
Definition: filter_contents.h:22