Flutter Impeller
impeller::ShaderArchive Class Reference

#include <shader_archive.h>

Public Member Functions

 ShaderArchive (std::shared_ptr< fml::Mapping > payload)
 
 ShaderArchive (ShaderArchive &&)
 
 ~ShaderArchive ()
 
bool IsValid () const
 
size_t GetShaderCount () const
 
std::shared_ptr< fml::Mapping > GetMapping (ArchiveShaderType type, std::string name) const
 
size_t IterateAllShaders (const std::function< bool(ArchiveShaderType type, const std::string &name, const std::shared_ptr< fml::Mapping > &mapping)> &) const
 

Detailed Description

Definition at line 18 of file shader_archive.h.

Constructor & Destructor Documentation

◆ ShaderArchive() [1/2]

impeller::ShaderArchive::ShaderArchive ( std::shared_ptr< fml::Mapping >  payload)
explicit

Definition at line 28 of file shader_archive.cc.

29  : payload_(std::move(payload)) {
30  if (!payload_ || payload_->GetMapping() == nullptr) {
31  VALIDATION_LOG << "Shader mapping was absent.";
32  return;
33  }
34 
35  if (!fb::ShaderArchiveBufferHasIdentifier(payload_->GetMapping())) {
36  VALIDATION_LOG << "Invalid shader magic.";
37  return;
38  }
39 
40  auto shader_archive = fb::GetShaderArchive(payload_->GetMapping());
41  if (!shader_archive) {
42  return;
43  }
44 
45  if (auto items = shader_archive->items()) {
46  for (auto i = items->begin(), end = items->end(); i != end; i++) {
47  ShaderKey key;
48  key.name = i->name()->str();
49  key.type = ToShaderType(i->stage());
50  shaders_[key] = std::make_shared<fml::NonOwnedMapping>(
51  i->mapping()->Data(), i->mapping()->size(),
52  [payload = payload_](auto, auto) {
53  // The pointers are into the base payload. Instead of copying the
54  // data, just hold onto the payload.
55  });
56  }
57  }
58 
59  is_valid_ = true;
60 }
constexpr ArchiveShaderType ToShaderType(fb::Stage stage)
const size_t end
#define VALIDATION_LOG
Definition: validation.h:91

References end, impeller::ToShaderType(), and VALIDATION_LOG.

◆ ShaderArchive() [2/2]

impeller::ShaderArchive::ShaderArchive ( ShaderArchive &&  )
default

◆ ~ShaderArchive()

impeller::ShaderArchive::~ShaderArchive ( )
default

Member Function Documentation

◆ GetMapping()

std::shared_ptr< fml::Mapping > impeller::ShaderArchive::GetMapping ( ArchiveShaderType  type,
std::string  name 
) const

Definition at line 74 of file shader_archive.cc.

76  {
77  ShaderKey key;
78  key.type = type;
79  key.name = std::move(name);
80  auto found = shaders_.find(key);
81  return found == shaders_.end() ? nullptr : found->second;
82 }
GLenum type

References type.

Referenced by impeller::testing::TEST().

◆ GetShaderCount()

size_t impeller::ShaderArchive::GetShaderCount ( ) const

Definition at line 70 of file shader_archive.cc.

70  {
71  return shaders_.size();
72 }

Referenced by impeller::testing::TEST().

◆ IsValid()

bool impeller::ShaderArchive::IsValid ( ) const

Definition at line 66 of file shader_archive.cc.

66  {
67  return is_valid_;
68 }

Referenced by IterateAllShaders(), and impeller::testing::TEST().

◆ IterateAllShaders()

size_t impeller::ShaderArchive::IterateAllShaders ( const std::function< bool(ArchiveShaderType type, const std::string &name, const std::shared_ptr< fml::Mapping > &mapping)> &  callback) const

Definition at line 84 of file shader_archive.cc.

88  {
89  if (!IsValid() || !callback) {
90  return 0u;
91  }
92  size_t count = 0u;
93  for (const auto& shader : shaders_) {
94  count++;
95  if (!callback(shader.first.type, shader.first.name, shader.second)) {
96  break;
97  }
98  }
99  return count;
100 }

References IsValid().


The documentation for this class was generated from the following files: