flutter::DlDeferredImageGPUImpeller Class Reference

#include <display_list_deferred_image_gpu_impeller.h>

Inheritance diagram for flutter::DlDeferredImageGPUImpeller:

Public Member Functions
	~DlDeferredImageGPUImpeller () override
sk_sp< SkImage >	skia_image () const override
	If this display list image is meant to be used by the Skia backend, an SkImage instance. Null otherwise.
std::shared_ptr< impeller::Texture >	impeller_texture () const override
	If this display list image is meant to be used by the Impeller backend, an Impeller texture instance. Null otherwise.
bool	isOpaque () const override
	If the pixel format of this image ignores alpha, this returns true. This method might conservatively return false when it cannot guarnatee an opaque image, for example when the pixel format of the image supports alpha but the image is made up of entirely opaque pixels.
bool	isTextureBacked () const override
bool	isUIThreadSafe () const override
	If the underlying platform image held by this object has no threading requirements for the release of that image (or if arrangements have already been made to forward that image to the correct thread upon deletion), this method returns true.
SkISize	dimensions () const override
size_t	GetApproximateByteSize () const override
OwningContext	owning_context () const override
Public Member Functions inherited from flutter::DlImage
virtual	~DlImage ()
int	width () const
int	height () const
SkIRect	bounds () const
virtual std::optional< std::string >	get_error () const
bool	Equals (const DlImage *other) const
bool	Equals (const DlImage &other) const
bool	Equals (const sk_sp< const DlImage > &other) const
Public Member Functions inherited from SkRefCntBase
	SkRefCntBase ()
virtual	~SkRefCntBase ()
bool	unique () const
void	ref () const
void	unref () const

Static Public Member Functions
static sk_sp< DlDeferredImageGPUImpeller >	Make (std::unique_ptr< LayerTree > layer_tree, fml::TaskRunnerAffineWeakPtr< SnapshotDelegate > snapshot_delegate, fml::RefPtr< fml::TaskRunner > raster_task_runner)
static sk_sp< DlDeferredImageGPUImpeller >	Make (sk_sp< DisplayList > display_list, const SkISize &size, fml::TaskRunnerAffineWeakPtr< SnapshotDelegate > snapshot_delegate, fml::RefPtr< fml::TaskRunner > raster_task_runner)
Static Public Member Functions inherited from flutter::DlImage
static sk_sp< DlImage >	Make (const SkImage *image)
static sk_sp< DlImage >	Make (sk_sp< SkImage > image)

Additional Inherited Members
Public Types inherited from flutter::DlImage
enum class	OwningContext { kRaster , kIO }
Protected Member Functions inherited from flutter::DlImage
	DlImage ()

Detailed Description

Definition at line 19 of file display_list_deferred_image_gpu_impeller.h.

Constructor & Destructor Documentation

~DlDeferredImageGPUImpeller()

flutter::DlDeferredImageGPUImpeller::~DlDeferredImageGPUImpeller ( )

overridedefault

Member Function Documentation

dimensions()

SkISize flutter::DlDeferredImageGPUImpeller::dimensions ( ) const

overridevirtual

Returns

The dimensions of the pixel grid.

Implements flutter::DlImage.

Definition at line 72 of file display_list_deferred_image_gpu_impeller.cc.

                                                     {
  if (!wrapper_) {
    return SkISize::MakeEmpty();
  }
  return wrapper_->size();
}

GetApproximateByteSize()

size_t flutter::DlDeferredImageGPUImpeller::GetApproximateByteSize ( ) const

overridevirtual

Returns

The approximate byte size of the allocation of this image. This takes into account details such as mip-mapping. The allocation is usually resident in device memory.

Implements flutter::DlImage.

Definition at line 80 of file display_list_deferred_image_gpu_impeller.cc.

                                                                {
  auto size = sizeof(DlDeferredImageGPUImpeller);
  if (wrapper_) {
    if (wrapper_->texture()) {
      size += wrapper_->texture()
                  ->GetTextureDescriptor()
                  .GetByteSizeOfBaseMipLevel();
    } else {
      size += wrapper_->size().width() * wrapper_->size().height() * 4;
    }
  }
  return size;
}

impeller_texture()

std::shared_ptr< impeller::Texture > flutter::DlDeferredImageGPUImpeller::impeller_texture ( ) const

overridevirtual

If this display list image is meant to be used by the Impeller backend, an Impeller texture instance. Null otherwise.

Returns

An Impeller texture instance or null.

Implements flutter::DlImage.

Definition at line 48 of file display_list_deferred_image_gpu_impeller.cc.

                                                   {
  if (!wrapper_) {
    return nullptr;
  }
  return wrapper_->texture();
}

isOpaque()

bool flutter::DlDeferredImageGPUImpeller::isOpaque ( ) const

overridevirtual

If the pixel format of this image ignores alpha, this returns true. This method might conservatively return false when it cannot guarnatee an opaque image, for example when the pixel format of the image supports alpha but the image is made up of entirely opaque pixels.

Returns

True if the pixel format of this image ignores alpha.

Implements flutter::DlImage.

Definition at line 56 of file display_list_deferred_image_gpu_impeller.cc.

                                                {
  // Impeller doesn't currently implement opaque alpha types.
  return false;
}

isTextureBacked()

bool flutter::DlDeferredImageGPUImpeller::isTextureBacked ( ) const

overridevirtual

Implements flutter::DlImage.

Definition at line 62 of file display_list_deferred_image_gpu_impeller.cc.

                                                       {
  return wrapper_ && wrapper_->isTextureBacked();
}

isUIThreadSafe()

bool flutter::DlDeferredImageGPUImpeller::isUIThreadSafe ( ) const

overridevirtual

If the underlying platform image held by this object has no threading requirements for the release of that image (or if arrangements have already been made to forward that image to the correct thread upon deletion), this method returns true.

Returns

True if the underlying image is held in a thread-safe manner.

Implements flutter::DlImage.

Definition at line 67 of file display_list_deferred_image_gpu_impeller.cc.

                                                      {
  return true;
}

Make() [1/2]

sk_sp< DlDeferredImageGPUImpeller > flutter::DlDeferredImageGPUImpeller::Make ( sk_sp< DisplayList >  display_list, const SkISize &  size, fml::TaskRunnerAffineWeakPtr< SnapshotDelegate >  snapshot_delegate, fml::RefPtr< fml::TaskRunner >  raster_task_runner  )

static

Definition at line 23 of file display_list_deferred_image_gpu_impeller.cc.

                                                 {
  return sk_sp<DlDeferredImageGPUImpeller>(new DlDeferredImageGPUImpeller(
      DlDeferredImageGPUImpeller::ImageWrapper::Make(
          std::move(display_list), size, std::move(snapshot_delegate),
          std::move(raster_task_runner))));
}

Make() [2/2]

sk_sp< DlDeferredImageGPUImpeller > flutter::DlDeferredImageGPUImpeller::Make ( std::unique_ptr< LayerTree >  layer_tree, fml::TaskRunnerAffineWeakPtr< SnapshotDelegate >  snapshot_delegate, fml::RefPtr< fml::TaskRunner >  raster_task_runner  )

static

Definition at line 13 of file display_list_deferred_image_gpu_impeller.cc.

                                                 {
  return sk_sp<DlDeferredImageGPUImpeller>(new DlDeferredImageGPUImpeller(
      DlDeferredImageGPUImpeller::ImageWrapper::Make(
          std::move(layer_tree), std::move(snapshot_delegate),
          std::move(raster_task_runner))));
}

owning_context()

OwningContext flutter::DlDeferredImageGPUImpeller::owning_context ( ) const

inlineoverridevirtual

Returns

Specifies which context was used to create this image. The image must be collected on the same task runner as its context.

Reimplemented from flutter::DlImage.

Definition at line 57 of file display_list_deferred_image_gpu_impeller.h.

                                                {
    return OwningContext::kRaster;
  }

skia_image()

sk_sp< SkImage > flutter::DlDeferredImageGPUImpeller::skia_image ( ) const

overridevirtual

If this display list image is meant to be used by the Skia backend, an SkImage instance. Null otherwise.

Returns

A Skia image instance or null.

Implements flutter::DlImage.

Definition at line 42 of file display_list_deferred_image_gpu_impeller.cc.

                                                            {
  return nullptr;
};

---

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

• lib/ui/painting/display_list_deferred_image_gpu_impeller.h
• lib/ui/painting/display_list_deferred_image_gpu_impeller.cc