| Flutter Impeller |

dl_image_impeller.cc
Go to the documentation of this file.
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/display_list/dl_image_impeller.h"
6
7 #include "impeller/display_list/aiks_context.h"
8 #include "impeller/entity/contents/filters/filter_contents.h"
9
10 namespace impeller {
11
12 #if FML_OS_IOS_SIMULATOR
13 sk_sp<DlImageImpeller> DlImageImpeller::Make(std::shared_ptr<Texture> texture,
14 OwningContext owning_context,
15 bool is_fake_image) {
16 if (!texture && !is_fake_image) {
17 return nullptr;
18 }
19 return sk_sp<DlImageImpeller>(
20 new DlImageImpeller(std::move(texture), owning_context, is_fake_image));
21 }
22 #else
23 sk_sp<DlImageImpeller> DlImageImpeller::Make(std::shared_ptr<Texture> texture,
24 OwningContext owning_context) {
25 if (!texture) {
26 return nullptr;
27 }
28 return sk_sp<DlImageImpeller>(
29 new DlImageImpeller(std::move(texture), owning_context));
30 }
31 #endif // FML_OS_IOS_SIMULATOR
32
33 sk_sp<DlImageImpeller> DlImageImpeller::MakeFromYUVTextures(
34 AiksContext* aiks_context,
35 std::shared_ptr<Texture> y_texture,
36 std::shared_ptr<Texture> uv_texture,
37 YUVColorSpace yuv_color_space) {
38 if (!aiks_context || !y_texture || !uv_texture) {
39 return nullptr;
40 }
41 auto yuv_to_rgb_filter_contents = FilterContents::MakeYUVToRGBFilter(
42 std::move(y_texture), std::move(uv_texture), yuv_color_space);
43 impeller::Entity entity;
44 entity.SetBlendMode(impeller::BlendMode::kSrc);
45 std::optional<Snapshot> snapshot =
46 yuv_to_rgb_filter_contents->RenderToSnapshot(
47 aiks_context->GetContentContext(), // renderer
48 entity, // entity
49 std::nullopt, // coverage_limit
50 std::nullopt, // sampler_descriptor
51 true, // msaa_enabled
52 /*mip_count=*/1,
53 "MakeYUVToRGBFilter Snapshot"); // label
54 if (!snapshot.has_value()) {
55 return nullptr;
56 }
57 return impeller::DlImageImpeller::Make(snapshot->texture);
58 }
59
60 DlImageImpeller::DlImageImpeller(std::shared_ptr<Texture> texture,
61 OwningContext owning_context
62 #ifdef FML_OS_IOS_SIMULATOR
63 ,
64 bool is_fake_image
65 #endif // FML_OS_IOS_SIMULATOR
66 )
67 : texture_(std::move(texture)),
68 owning_context_(owning_context)
69 #ifdef FML_OS_IOS_SIMULATOR
70 ,
71 is_fake_image_(is_fake_image)
72 #endif // #ifdef FML_OS_IOS_SIMULATOR
73 {
74 }
75
76 // |DlImage|
77 DlImageImpeller::~DlImageImpeller() = default;
78
79 // |DlImage|
80 sk_sp<SkImage> DlImageImpeller::skia_image() const {
81 return nullptr;
82 };
83
84 // |DlImage|
85 std::shared_ptr<impeller::Texture> DlImageImpeller::impeller_texture() const {
86 return texture_;
87 }
88
89 // |DlImage|
90 bool DlImageImpeller::isOpaque() const {
91 // Impeller doesn't currently implement opaque alpha types.
92 return false;
93 }
94
95 // |DlImage|
96 bool DlImageImpeller::isTextureBacked() const {
97 // Impeller textures are always ... textures :/
98 return true;
99 }
100
101 // |DlImage|
102 bool DlImageImpeller::isUIThreadSafe() const {
103 // Impeller textures are always thread-safe
104 return true;
105 }
106
107 // |DlImage|
108 flutter::DlISize DlImageImpeller::GetSize() const {
109 // texture |GetSize()| returns a 64-bit size, but we need a 32-bit size,
110 // so we need to convert to DlISize (the 32-bit variant) either way.
111 return texture_ ? flutter::DlISize(texture_->GetSize()) : flutter::DlISize();
112 }
113
114 // |DlImage|
115 size_t DlImageImpeller::GetApproximateByteSize() const {
116 auto size = sizeof(*this);
117 if (texture_) {
118 size += texture_->GetTextureDescriptor().GetByteSizeOfBaseMipLevel();
119 }
120 return size;
121 }
122
123 } // namespace impeller
aiks_context.h
impeller::AiksContext
Definition: aiks_context.h:20
impeller::AiksContext::GetContentContext
ContentContext & GetContentContext() const
Definition: aiks_context.cc:42
impeller::DlImageImpeller
Definition: dl_image_impeller.h:15
impeller::DlImageImpeller::GetApproximateByteSize
size_t GetApproximateByteSize() const override
Definition: dl_image_impeller.cc:115
impeller::DlImageImpeller::MakeFromYUVTextures
static sk_sp< DlImageImpeller > MakeFromYUVTextures(AiksContext *aiks_context, std::shared_ptr< Texture > y_texture, std::shared_ptr< Texture > uv_texture, YUVColorSpace yuv_color_space)
Definition: dl_image_impeller.cc:33
impeller::DlImageImpeller::isTextureBacked
bool isTextureBacked() const override
Definition: dl_image_impeller.cc:96
impeller::DlImageImpeller::impeller_texture
std::shared_ptr< impeller::Texture > impeller_texture() const override
Definition: dl_image_impeller.cc:85
impeller::DlImageImpeller::Make
static sk_sp< DlImageImpeller > Make(std::shared_ptr< Texture > texture, OwningContext owning_context=OwningContext::kIO)
Definition: dl_image_impeller.cc:23
impeller::DlImageImpeller::GetSize
flutter::DlISize GetSize() const override
Definition: dl_image_impeller.cc:108
impeller::DlImageImpeller::skia_image
sk_sp< SkImage > skia_image() const override
Definition: dl_image_impeller.cc:80
impeller::DlImageImpeller::~DlImageImpeller
~DlImageImpeller() override
impeller::DlImageImpeller::isUIThreadSafe
bool isUIThreadSafe() const override
Definition: dl_image_impeller.cc:102
impeller::DlImageImpeller::isOpaque
bool isOpaque() const override
Definition: dl_image_impeller.cc:90
impeller::DlImageImpeller::owning_context
OwningContext owning_context() const override
Definition: dl_image_impeller.h:57
impeller::Entity
Definition: entity.h:26
impeller::Entity::SetBlendMode
void SetBlendMode(BlendMode blend_mode)
Definition: entity.cc:97
impeller::FilterContents::MakeYUVToRGBFilter
static std::shared_ptr< FilterContents > MakeYUVToRGBFilter(std::shared_ptr< Texture > y_texture, std::shared_ptr< Texture > uv_texture, YUVColorSpace yuv_color_space)
Definition: filter_contents.cc:107
dl_image_impeller.h
filter_contents.h
impeller
Definition: allocation.cc:12
impeller::YUVColorSpace
YUVColorSpace
Definition: color.h:54
impeller::BlendMode::kSrc
@ kSrc
std
Definition: comparable.h:95