| Flutter Impeller |

contents_filter_input.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/entity/contents/filters/inputs/contents_filter_input.h"
6
7 #include <optional>
8 #include <utility>
9
10 #include "impeller/base/strings.h"
11
12 namespace impeller {
13
14 ContentsFilterInput::ContentsFilterInput(std::shared_ptr<Contents> contents,
15 bool msaa_enabled)
16 : contents_(std::move(contents)), msaa_enabled_(msaa_enabled) {}
17
18 ContentsFilterInput::~ContentsFilterInput() = default;
19
20 FilterInput::Variant ContentsFilterInput::GetInput() const {
21 return contents_;
22 }
23
24 std::optional<Snapshot> ContentsFilterInput::GetSnapshot(
25 const std::string& label,
26 const ContentContext& renderer,
27 const Entity& entity,
28 std::optional<Rect> coverage_limit) const {
29 if (!coverage_limit.has_value() && entity.GetContents()) {
30 coverage_limit = entity.GetContents()->GetCoverageHint();
31 }
32 if (!snapshot_.has_value()) {
33 snapshot_ = contents_->RenderToSnapshot(
34 renderer, // renderer
35 entity, // entity
36 coverage_limit, // coverage_limit
37 std::nullopt, // sampler_descriptor
38 msaa_enabled_, // msaa_enabled
39 SPrintF("Contents to %s Filter Snapshot", label.c_str())); // label
40 }
41 return snapshot_;
42 }
43
44 std::optional<Rect> ContentsFilterInput::GetCoverage(
45 const Entity& entity) const {
46 return contents_->GetCoverage(entity);
47 }
48
49 void ContentsFilterInput::PopulateGlyphAtlas(
50 const std::shared_ptr<LazyGlyphAtlas>& lazy_glyph_atlas,
51 Scalar scale) {
52 contents_->PopulateGlyphAtlas(lazy_glyph_atlas, scale);
53 }
54
55 } // namespace impeller
impeller::Scalar
float Scalar
Definition: scalar.h:15
impeller::ContentsFilterInput::GetCoverage
std::optional< Rect > GetCoverage(const Entity &entity) const override
Definition: contents_filter_input.cc:44
impeller::ContentsFilterInput::GetSnapshot
std::optional< Snapshot > GetSnapshot(const std::string &label, const ContentContext &renderer, const Entity &entity, std::optional< Rect > coverage_limit) const override
Definition: contents_filter_input.cc:24
impeller::Entity
Definition: entity.h:21
impeller::ContentsFilterInput::GetInput
Variant GetInput() const override
Definition: contents_filter_input.cc:20
impeller::SPrintF
std::string SPrintF(const char *format,...)
Definition: strings.cc:12
impeller::Entity::GetContents
const std::shared_ptr< Contents > & GetContents() const
Definition: entity.cc:81
impeller::FilterInput::Variant
std::variant< std::shared_ptr< FilterContents >, std::shared_ptr< Contents >, std::shared_ptr< Texture >, Rect > Variant
Definition: filter_input.h:36
strings.h
impeller::ContentsFilterInput::~ContentsFilterInput
~ContentsFilterInput() override
std
Definition: comparable.h:98
impeller::ContentsFilterInput::PopulateGlyphAtlas
void PopulateGlyphAtlas(const std::shared_ptr< LazyGlyphAtlas > &lazy_glyph_atlas, Scalar scale) override
Definition: contents_filter_input.cc:49
contents_filter_input.h
impeller
Definition: aiks_context.cc:10
impeller::ContentContext
Definition: content_context.h:344