| Flutter Impeller |

pipeline.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/renderer/pipeline.h"
6 #include <optional>
7
8 #include "compute_pipeline_descriptor.h"
9 #include "impeller/base/promise.h"
10 #include "impeller/renderer/compute_pipeline_descriptor.h"
11 #include "impeller/renderer/context.h"
12 #include "impeller/renderer/pipeline_library.h"
13 #include "pipeline_descriptor.h"
14
15 namespace impeller {
16
17 template <typename T>
18 Pipeline<T>::Pipeline(std::weak_ptr<PipelineLibrary> library, const T& desc)
19 : library_(std::move(library)), desc_(std::move(desc)) {}
20
21 template <typename T>
22 Pipeline<T>::~Pipeline() = default;
23
24 PipelineFuture<PipelineDescriptor> CreatePipelineFuture(
25 const Context& context,
26 std::optional<PipelineDescriptor> desc,
27 bool async) {
28 if (!context.IsValid()) {
29 return {desc, RealizedFuture<std::shared_ptr<Pipeline<PipelineDescriptor>>>(
30 nullptr)};
31 }
32
33 return context.GetPipelineLibrary()->GetPipeline(std::move(desc),
34 /*async=*/async);
35 }
36
37 PipelineFuture<ComputePipelineDescriptor> CreatePipelineFuture(
38 const Context& context,
39 std::optional<ComputePipelineDescriptor> desc) {
40 if (!context.IsValid()) {
41 return {
42 desc,
43 RealizedFuture<std::shared_ptr<Pipeline<ComputePipelineDescriptor>>>(
44 nullptr)};
45 }
46
47 return context.GetPipelineLibrary()->GetPipeline(std::move(desc));
48 }
49
50 template <typename T>
51 const T& Pipeline<T>::GetDescriptor() const {
52 return desc_;
53 }
54
55 template <typename T>
56 PipelineFuture<T> Pipeline<T>::CreateVariant(
57 bool async,
58 const std::function<void(T& desc)>& descriptor_callback) const {
59 if (!descriptor_callback) {
60 return {std::nullopt,
61 RealizedFuture<std::shared_ptr<Pipeline<T>>>(nullptr)};
62 }
63
64 auto copied_desc = desc_;
65
66 descriptor_callback(copied_desc);
67
68 auto library = library_.lock();
69 if (!library) {
70 VALIDATION_LOG << "The library from which this pipeline was created was "
71 "already collected.";
72 return {desc_, RealizedFuture<std::shared_ptr<Pipeline<T>>>(nullptr)};
73 }
74
75 return library->GetPipeline(std::move(copied_desc), async);
76 }
77
78 template class Pipeline<PipelineDescriptor>;
79 template class Pipeline<ComputePipelineDescriptor>;
80
81 } // namespace impeller
impeller::Context
To do anything rendering related with Impeller, you need a context.
Definition: context.h:65
impeller::Context::GetPipelineLibrary
virtual std::shared_ptr< PipelineLibrary > GetPipelineLibrary() const =0
Returns the library of pipelines used by render or compute commands.
impeller::Context::IsValid
virtual bool IsValid() const =0
Determines if a context is valid. If the caller ever receives an invalid context, they must discard i...
impeller::Pipeline< PipelineDescriptor >
impeller::Pipeline::~Pipeline
virtual ~Pipeline()
impeller::Pipeline::Pipeline
Pipeline(std::weak_ptr< PipelineLibrary > library, const T &desc)
Definition: pipeline.cc:18
impeller::Pipeline::CreateVariant
PipelineFuture< T > CreateVariant(bool async, const std::function< void(T &desc)> &descriptor_callback) const
Definition: pipeline.cc:56
impeller::Pipeline::GetDescriptor
const T & GetDescriptor() const
Get the descriptor that was responsible for creating this pipeline. It may be copied and modified to ...
Definition: pipeline.cc:51
compute_pipeline_descriptor.h
desc_
std::optional< PipelineDescriptor > desc_
Definition: content_context.cc:76
impeller
Definition: allocation.cc:12
impeller::CreatePipelineFuture
PipelineFuture< PipelineDescriptor > CreatePipelineFuture(const Context &context, std::optional< PipelineDescriptor > desc, bool async)
Create a pipeline for the given descriptor.
Definition: pipeline.cc:24
std
Definition: comparable.h:95
pipeline.h
pipeline_descriptor.h
pipeline_library.h
promise.h
context.h
impeller::PipelineFuture
Definition: pipeline.h:28
VALIDATION_LOG
#define VALIDATION_LOG
Definition: validation.h:91