| Flutter Impeller |

pipeline_library_vk.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/backend/vulkan/pipeline_library_vk.h"
6
7 #include <cstdint>
8
9 #include "flutter/fml/container.h"
10 #include "flutter/fml/trace_event.h"
11 #include "impeller/base/promise.h"
12 #include "impeller/base/validation.h"
13 #include "impeller/renderer/backend/vulkan/context_vk.h"
14 #include "impeller/renderer/backend/vulkan/formats_vk.h"
15 #include "impeller/renderer/backend/vulkan/pipeline_vk.h"
16 #include "impeller/renderer/backend/vulkan/shader_function_vk.h"
17
18 namespace impeller {
19
20 PipelineLibraryVK::PipelineLibraryVK(
21 const std::shared_ptr<DeviceHolderVK>& device_holder,
22 std::shared_ptr<const Capabilities> caps,
23 fml::UniqueFD cache_directory,
24 std::shared_ptr<fml::ConcurrentTaskRunner> worker_task_runner)
25 : device_holder_(device_holder),
26 pso_cache_(std::make_shared<PipelineCacheVK>(std::move(caps),
27 device_holder,
28 std::move(cache_directory))),
29 worker_task_runner_(std::move(worker_task_runner)) {
30 FML_DCHECK(worker_task_runner_);
31 if (!pso_cache_->IsValid() || !worker_task_runner_) {
32 return;
33 }
34
35 is_valid_ = true;
36 }
37
38 PipelineLibraryVK::~PipelineLibraryVK() = default;
39
40 // |PipelineLibrary|
41 bool PipelineLibraryVK::IsValid() const {
42 return is_valid_;
43 }
44
45 std::unique_ptr<ComputePipelineVK> PipelineLibraryVK::CreateComputePipeline(
46 const ComputePipelineDescriptor& desc,
47 PipelineKey pipeline_key) {
48 TRACE_EVENT0("flutter", __FUNCTION__);
49 vk::ComputePipelineCreateInfo pipeline_info;
50
51 //----------------------------------------------------------------------------
52 /// Shader Stage
53 ///
54 const auto entrypoint = desc.GetStageEntrypoint();
55 if (!entrypoint) {
56 VALIDATION_LOG << "Compute shader is missing an entrypoint.";
57 return nullptr;
58 }
59
60 std::shared_ptr<DeviceHolderVK> strong_device = device_holder_.lock();
61 if (!strong_device) {
62 return nullptr;
63 }
64 auto device_properties = strong_device->GetPhysicalDevice().getProperties();
65 auto max_wg_size = device_properties.limits.maxComputeWorkGroupSize;
66
67 // Give all compute shaders a specialization constant entry for the
68 // workgroup/threadgroup size.
69 vk::SpecializationMapEntry specialization_map_entry[1];
70
71 uint32_t workgroup_size_x = max_wg_size[0];
72 specialization_map_entry[0].constantID = 0;
73 specialization_map_entry[0].offset = 0;
74 specialization_map_entry[0].size = sizeof(uint32_t);
75
76 vk::SpecializationInfo specialization_info;
77 specialization_info.mapEntryCount = 1;
78 specialization_info.pMapEntries = &specialization_map_entry[0];
79 specialization_info.dataSize = sizeof(uint32_t);
80 specialization_info.pData = &workgroup_size_x;
81
82 vk::PipelineShaderStageCreateInfo info;
83 info.setStage(vk::ShaderStageFlagBits::eCompute);
84 info.setPName("main");
85 info.setModule(ShaderFunctionVK::Cast(entrypoint.get())->GetModule());
86 info.setPSpecializationInfo(&specialization_info);
87 pipeline_info.setStage(info);
88
89 //----------------------------------------------------------------------------
90 /// Pipeline Layout a.k.a the descriptor sets and uniforms.
91 ///
92 std::vector<vk::DescriptorSetLayoutBinding> desc_bindings;
93
94 for (auto layout : desc.GetDescriptorSetLayouts()) {
95 auto vk_desc_layout = ToVKDescriptorSetLayoutBinding(layout);
96 desc_bindings.push_back(vk_desc_layout);
97 }
98
99 vk::DescriptorSetLayoutCreateInfo descs_layout_info;
100 descs_layout_info.setBindings(desc_bindings);
101
102 auto [descs_result, descs_layout] =
103 strong_device->GetDevice().createDescriptorSetLayoutUnique(
104 descs_layout_info);
105 if (descs_result != vk::Result::eSuccess) {
106 VALIDATION_LOG << "unable to create uniform descriptors";
107 return nullptr;
108 }
109
110 ContextVK::SetDebugName(strong_device->GetDevice(), descs_layout.get(),
111 "Descriptor Set Layout " + desc.GetLabel());
112
113 //----------------------------------------------------------------------------
114 /// Create the pipeline layout.
115 ///
116 vk::PipelineLayoutCreateInfo pipeline_layout_info;
117 pipeline_layout_info.setSetLayouts(descs_layout.get());
118 auto pipeline_layout = strong_device->GetDevice().createPipelineLayoutUnique(
119 pipeline_layout_info);
120 if (pipeline_layout.result != vk::Result::eSuccess) {
121 VALIDATION_LOG << "Could not create pipeline layout for pipeline "
122 << desc.GetLabel() << ": "
123 << vk::to_string(pipeline_layout.result);
124 return nullptr;
125 }
126 pipeline_info.setLayout(pipeline_layout.value.get());
127
128 //----------------------------------------------------------------------------
129 /// Finally, all done with the setup info. Create the pipeline itself.
130 ///
131 auto pipeline = pso_cache_->CreatePipeline(pipeline_info);
132 if (!pipeline) {
133 VALIDATION_LOG << "Could not create graphics pipeline: " << desc.GetLabel();
134 return nullptr;
135 }
136
137 ContextVK::SetDebugName(strong_device->GetDevice(), *pipeline_layout.value,
138 "Pipeline Layout " + desc.GetLabel());
139 ContextVK::SetDebugName(strong_device->GetDevice(), *pipeline,
140 "Pipeline " + desc.GetLabel());
141
142 return std::make_unique<ComputePipelineVK>(
143 device_holder_,
144 weak_from_this(), //
145 desc, //
146 std::move(pipeline), //
147 std::move(pipeline_layout.value), //
148 std::move(descs_layout), //
149 pipeline_key);
150 }
151
152 // |PipelineLibrary|
153 PipelineFuture<PipelineDescriptor> PipelineLibraryVK::GetPipeline(
154 PipelineDescriptor descriptor,
155 bool async,
156 bool threadsafe) {
157 Lock lock(pipelines_mutex_);
158 if (auto found = pipelines_.find(descriptor); found != pipelines_.end()) {
159 return found->second;
160 }
161
162 cache_dirty_ = true;
163 if (!IsValid()) {
164 return {
165 descriptor,
166 RealizedFuture<std::shared_ptr<Pipeline<PipelineDescriptor>>>(nullptr)};
167 }
168
169 auto promise = std::make_shared<
170 NoExceptionPromise<std::shared_ptr<Pipeline<PipelineDescriptor>>>>();
171 auto pipeline_future =
172 PipelineFuture<PipelineDescriptor>{descriptor, promise->get_future()};
173 pipelines_[descriptor] = pipeline_future;
174
175 auto weak_this = weak_from_this();
176
177 PipelineKey next_key = pipeline_key_++;
178 auto generation_task = [descriptor, weak_this, promise, next_key]() {
179 auto thiz = weak_this.lock();
180 if (!thiz) {
181 promise->set_value(nullptr);
182 VALIDATION_LOG << "Pipeline library was collected before the pipeline "
183 "could be created.";
184 return;
185 }
186
187 promise->set_value(PipelineVK::Create(
188 descriptor, //
189 PipelineLibraryVK::Cast(*thiz).device_holder_.lock(), //
190 weak_this, //
191 next_key //
192 ));
193 };
194
195 if (async) {
196 worker_task_runner_->PostTask(generation_task);
197 } else {
198 generation_task();
199 }
200
201 return pipeline_future;
202 }
203
204 // |PipelineLibrary|
205 PipelineFuture<ComputePipelineDescriptor> PipelineLibraryVK::GetPipeline(
206 ComputePipelineDescriptor descriptor,
207 bool async) {
208 Lock lock(pipelines_mutex_);
209 if (auto found = compute_pipelines_.find(descriptor);
210 found != compute_pipelines_.end()) {
211 return found->second;
212 }
213
214 cache_dirty_ = true;
215 if (!IsValid()) {
216 return {
217 descriptor,
218 RealizedFuture<std::shared_ptr<Pipeline<ComputePipelineDescriptor>>>(
219 nullptr)};
220 }
221
222 auto promise = std::make_shared<
223 std::promise<std::shared_ptr<Pipeline<ComputePipelineDescriptor>>>>();
224 auto pipeline_future = PipelineFuture<ComputePipelineDescriptor>{
225 descriptor, promise->get_future()};
226 compute_pipelines_[descriptor] = pipeline_future;
227
228 auto weak_this = weak_from_this();
229
230 PipelineKey next_key = pipeline_key_++;
231 auto generation_task = [descriptor, weak_this, promise, next_key]() {
232 auto self = weak_this.lock();
233 if (!self) {
234 promise->set_value(nullptr);
235 VALIDATION_LOG << "Pipeline library was collected before the pipeline "
236 "could be created.";
237 return;
238 }
239
240 auto pipeline = PipelineLibraryVK::Cast(*self).CreateComputePipeline(
241 descriptor, next_key);
242 if (!pipeline) {
243 promise->set_value(nullptr);
244 VALIDATION_LOG << "Could not create pipeline: " << descriptor.GetLabel();
245 return;
246 }
247
248 promise->set_value(std::move(pipeline));
249 };
250
251 if (async) {
252 worker_task_runner_->PostTask(generation_task);
253 } else {
254 generation_task();
255 }
256
257 return pipeline_future;
258 }
259
260 // |PipelineLibrary|
261 bool PipelineLibraryVK::HasPipeline(const PipelineDescriptor& descriptor) {
262 Lock lock(pipelines_mutex_);
263 return pipelines_.find(descriptor) != pipelines_.end();
264 }
265
266 // |PipelineLibrary|
267 void PipelineLibraryVK::RemovePipelinesWithEntryPoint(
268 std::shared_ptr<const ShaderFunction> function) {
269 Lock lock(pipelines_mutex_);
270
271 fml::erase_if(pipelines_, [&](auto item) {
272 return item->first.GetEntrypointForStage(function->GetStage())
273 ->IsEqual(*function);
274 });
275 }
276
277 void PipelineLibraryVK::DidAcquireSurfaceFrame() {
278 if (++frames_acquired_ == 50u) {
279 if (cache_dirty_) {
280 cache_dirty_ = false;
281 PersistPipelineCacheToDisk();
282 }
283 frames_acquired_ = 0;
284 }
285 }
286
287 void PipelineLibraryVK::PersistPipelineCacheToDisk() {
288 worker_task_runner_->PostTask(
289 [weak_cache = decltype(pso_cache_)::weak_type(pso_cache_)]() {
290 auto cache = weak_cache.lock();
291 if (!cache) {
292 return;
293 }
294 cache->PersistCacheToDisk();
295 });
296 }
297
298 const std::shared_ptr<PipelineCacheVK>& PipelineLibraryVK::GetPSOCache() const {
299 return pso_cache_;
300 }
301
302 const std::shared_ptr<fml::ConcurrentTaskRunner>&
303 PipelineLibraryVK::GetWorkerTaskRunner() const {
304 return worker_task_runner_;
305 }
306
307 } // namespace impeller
pipelines_
std::vector< std::pair< uint64_t, std::unique_ptr< GenericRenderPipelineHandle > > > pipelines_
Definition: content_context.cc:78
formats_vk.h
impeller::interop::Create
ScopedObject< Object > Create(CtorArgs &&... args)
Definition: object.h:161
impeller
Definition: allocation.cc:12
impeller::ToVKDescriptorSetLayoutBinding
constexpr vk::DescriptorSetLayoutBinding ToVKDescriptorSetLayoutBinding(const DescriptorSetLayout &layout)
Definition: formats_vk.h:296
impeller::PipelineKey
int64_t PipelineKey
Definition: pipeline.h:21
std
Definition: comparable.h:95
pipeline_library_vk.h
pipeline_vk.h
promise.h
context_vk.h
shader_function_vk.h
validation.h
VALIDATION_LOG
#define VALIDATION_LOG
Definition: validation.h:91