flutter::gpu::Texture Class Reference

#include <texture.h>

Inheritance diagram for flutter::gpu::Texture:

Public Member Functions
	Texture (std::shared_ptr< impeller::Texture > texture)
	~Texture () override
std::shared_ptr< impeller::Texture >	GetTexture ()
void	SetCoordinateSystem (impeller::TextureCoordinateSystem coordinate_system)
bool	Overwrite (Context &gpu_context, const tonic::DartByteData &source_bytes)
size_t	GetBytesPerTexel ()
Dart_Handle	AsImage () const
Public Member Functions inherited from flutter::RefCountedDartWrappable< Texture >
virtual void	RetainDartWrappableReference () const override
virtual void	ReleaseDartWrappableReference () const override
Public Member Functions inherited from fml::RefCountedThreadSafe< T >
void	Release () const
Public Member Functions inherited from fml::internal::RefCountedThreadSafeBase
void	AddRef () const
bool	HasOneRef () const
void	AssertHasOneRef () const
Public Member Functions inherited from tonic::DartWrappable
	DartWrappable ()
virtual const DartWrapperInfo &	GetDartWrapperInfo () const =0
Dart_Handle	CreateDartWrapper (DartState *dart_state)
void	AssociateWithDartWrapper (Dart_Handle wrappable)
void	ClearDartWrapper ()
Dart_WeakPersistentHandle	dart_wrapper () const

Additional Inherited Members
Public Types inherited from tonic::DartWrappable
enum	DartNativeFields {   kPeerIndex ,   kNumberOfNativeFields }
Protected Member Functions inherited from fml::RefCountedThreadSafe< T >
	RefCountedThreadSafe ()
	~RefCountedThreadSafe ()
Protected Member Functions inherited from fml::internal::RefCountedThreadSafeBase
	RefCountedThreadSafeBase ()
	~RefCountedThreadSafeBase ()
bool	Release () const
void	Adopt ()
Protected Member Functions inherited from tonic::DartWrappable
virtual	~DartWrappable ()
Static Protected Member Functions inherited from tonic::DartWrappable
static Dart_PersistentHandle	GetTypeForWrapper (tonic::DartState *dart_state, const tonic::DartWrapperInfo &wrapper_info)

Detailed Description

Definition at line 17 of file texture.h.

Constructor & Destructor Documentation

Texture()

flutter::gpu::Texture::Texture ( std::shared_ptr< impeller::Texture >  texture )

explicit

Definition at line 24 of file texture.cc.

    : texture_(std::move(texture)) {}

~Texture()

flutter::gpu::Texture::~Texture ( )

overridedefault

Member Function Documentation

AsImage()

Dart_Handle flutter::gpu::Texture::AsImage

(

)

const

Definition at line 73 of file texture.cc.

                                   {
  // DlImageImpeller isn't compiled in builds with Impeller disabled. If
  // Impeller is disabled, it's impossible to get here anyhow, so just ifdef it
  // out.
#if IMPELLER_SUPPORTS_RENDERING
  auto image = flutter::CanvasImage::Create();
  auto dl_image = impeller::DlImageImpeller::Make(texture_);
  image->set_image(dl_image);
  auto wrapped = image->CreateOuterWrapping();
  return wrapped;
#else
  return Dart_Null();
#endif
}

References flutter::CanvasImage::Create(), image, and impeller::DlImageImpeller::Make().

Referenced by InternalFlutterGpu_Texture_AsImage().

GetBytesPerTexel()

size_t flutter::gpu::Texture::GetBytesPerTexel

(

)

Definition at line 68 of file texture.cc.

                                 {
  return impeller::BytesPerPixelForPixelFormat(
      texture_->GetTextureDescriptor().format);
}

References impeller::BytesPerPixelForPixelFormat().

Referenced by InternalFlutterGpu_Texture_BytesPerTexel().

GetTexture()

std::shared_ptr< impeller::Texture > flutter::gpu::Texture::GetTexture

(

)

Definition at line 29 of file texture.cc.

                                                   {
  return texture_;
}

Referenced by InternalFlutterGpu_RenderPass_SetColorAttachment().

Overwrite()

bool flutter::gpu::Texture::Overwrite	(	Context &	gpu_context,
		const tonic::DartByteData &	source_bytes
	)

Definition at line 38 of file texture.cc.

                                                               {
  const uint8_t* data = static_cast<const uint8_t*>(source_bytes.data());
  auto copy = std::vector<uint8_t>(data, data + source_bytes.length_in_bytes());
  // Texture::SetContents is a bit funky right now. It takes a shared_ptr of a
  // mapping and we're forced to copy here.
  auto mapping = std::make_shared<fml::DataMapping>(copy);
 
  // For the GLES backend, command queue submission just flushes the reactor,
  // which needs to happen on the raster thread.
  if (gpu_context.GetContext().GetBackendType() ==
      impeller::Context::BackendType::kOpenGLES) {
    auto dart_state = flutter::UIDartState::Current();
    auto& task_runners = dart_state->GetTaskRunners();
 
    task_runners.GetRasterTaskRunner()->PostTask(
        fml::MakeCopyable([texture = texture_, mapping = mapping]() mutable {
          if (!texture->SetContents(mapping)) {
            FML_LOG(ERROR) << "Failed to set texture contents.";
          }
        }));
  }
 
  if (!texture_->SetContents(mapping)) {
    return false;
  }
  gpu_context.GetContext().DisposeThreadLocalCachedResources();
  return true;
}

References flutter::UIDartState::Current(), flutter::data, tonic::DartByteData::data(), impeller::Context::DisposeThreadLocalCachedResources(), impeller::Context::GetBackendType(), flutter::gpu::Context::GetContext(), impeller::Context::kOpenGLES, tonic::DartByteData::length_in_bytes(), fml::MakeCopyable(), and texture.

SetCoordinateSystem()

void flutter::gpu::Texture::SetCoordinateSystem

(

impeller::TextureCoordinateSystem

coordinate_system

)

Definition at line 33 of file texture.cc.

                                                       {
  texture_->SetCoordinateSystem(coordinate_system);
}

Referenced by InternalFlutterGpu_Texture_SetCoordinateSystem().

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

• lib/gpu/texture.h
• lib/gpu/texture.cc