Inheritance diagram for impeller::TestImpellerContext:

Public Member Functions
	TestImpellerContext ()=default

BackendType	GetBackendType () const override
	Get the graphics backend of an Impeller context.

std::string	DescribeGpuModel () const override

bool	IsValid () const override
	Determines if a context is valid. If the caller ever receives an invalid context, they must discard it and construct a new context. There is no recovery mechanism to repair a bad context.

const std::shared_ptr< const Capabilities > &	GetCapabilities () const override
	Get the capabilities of Impeller context. All optionally supported feature of the platform, client-rendering API, and device can be queried using the `Capabilities`.

std::shared_ptr< Allocator >	GetResourceAllocator () const override
	Returns the allocator used to create textures and buffers on the device.

std::shared_ptr< ShaderLibrary >	GetShaderLibrary () const override
	Returns the library of shaders used to specify the programmable stages of a pipeline.

std::shared_ptr< SamplerLibrary >	GetSamplerLibrary () const override
	Returns the library of combined image samplers used in shaders.

std::shared_ptr< PipelineLibrary >	GetPipelineLibrary () const override
	Returns the library of pipelines used by render or compute commands.

std::shared_ptr< CommandQueue >	GetCommandQueue () const override
	Return the graphics queue for submitting command buffers.

std::shared_ptr< CommandBuffer >	CreateCommandBuffer () const override
	Create a new command buffer. Command buffers can be used to encode graphics, blit, or compute commands to be submitted to the device.

void	Shutdown () override
	Force all pending asynchronous work to finish. This is achieved by deleting all owned concurrent message loops.

Public Member Functions inherited from impeller::Context
virtual	~Context ()
	Destroys an Impeller context.

virtual bool	UpdateOffscreenLayerPixelFormat (PixelFormat format)

virtual void	StoreTaskForGPU (const std::function< void()> &task)

virtual void	InitializeCommonlyUsedShadersIfNeeded () const

Public Attributes
size_t	command_buffer_count_ = 0

Public Attributes inherited from impeller::Context
CaptureContext	capture

Additional Inherited Members
Public Types inherited from impeller::Context
enum class	BackendType { kMetal , kOpenGLES , kVulkan }

Static Public Attributes inherited from impeller::Context
static constexpr int32_t	kMaxTasksAwaitingGPU = 10

Protected Member Functions inherited from impeller::Context
	Context ()

Protected Attributes inherited from impeller::Context
std::vector< std::function< void()> >	per_frame_task_

Detailed Description

Definition at line 40 of file image_decoder_unittests.cc.

Constructor & Destructor Documentation

◆ TestImpellerContext()

impeller::TestImpellerContext::TestImpellerContext ( )

default

Member Function Documentation

◆ CreateCommandBuffer()

std::shared_ptr< CommandBuffer > impeller::TestImpellerContext::CreateCommandBuffer ( ) const

inlineoverridevirtual

Create a new command buffer. Command buffers can be used to encode graphics, blit, or compute commands to be submitted to the device.

A command buffer can only be used on a single thread. Multi-threaded render, blit, or compute passes must create a new command buffer on each thread.

Returns: A new command buffer.

Implements impeller::Context.

Definition at line 74 of file image_decoder_unittests.cc.

                                                                    {
    command_buffer_count_ += 1;
    return nullptr;
  }

◆ DescribeGpuModel()

std::string impeller::TestImpellerContext::DescribeGpuModel ( ) const

inlineoverridevirtual

Implements impeller::Context.

Definition at line 46 of file image_decoder_unittests.cc.

46{ return "TestGpu"; }

◆ GetBackendType()

BackendType impeller::TestImpellerContext::GetBackendType ( ) const

inlineoverridevirtual

Get the graphics backend of an Impeller context.

        This is useful for cases where a renderer needs to track and
        lookup backend-specific resources, like shaders or uniform
        layout information.

        It's not recommended to use this as a substitute for
        per-backend capability checking. Instead, check for specific
        capabilities via `GetCapabilities()`.

Returns: The graphics backend of the Context.

Implements impeller::Context.

Definition at line 44 of file image_decoder_unittests.cc.

44{ return BackendType::kMetal; }

impeller::Context::BackendType::kMetal

@ kMetal

◆ GetCapabilities()

const std::shared_ptr< const Capabilities > & impeller::TestImpellerContext::GetCapabilities ( ) const

inlineoverridevirtual

Get the capabilities of Impeller context. All optionally supported feature of the platform, client-rendering API, and device can be queried using the Capabilities.

Returns: The capabilities. Can never be nullptr for a valid context.

Implements impeller::Context.

Definition at line 50 of file image_decoder_unittests.cc.

                                                                            {
    return capabilities_;
  }

◆ GetCommandQueue()

std::shared_ptr< CommandQueue > impeller::TestImpellerContext::GetCommandQueue ( ) const

inlineoverridevirtual

Return the graphics queue for submitting command buffers.

Implements impeller::Context.

Definition at line 70 of file image_decoder_unittests.cc.

                                                               {
    FML_UNREACHABLE();
  }

◆ GetPipelineLibrary()

std::shared_ptr< PipelineLibrary > impeller::TestImpellerContext::GetPipelineLibrary ( ) const

inlineoverridevirtual

Returns the library of pipelines used by render or compute commands.

Returns: The pipeline library. Can never be nullptr for a valid context.

Implements impeller::Context.

Definition at line 66 of file image_decoder_unittests.cc.

                                                                     {
    return nullptr;
  }

◆ GetResourceAllocator()

std::shared_ptr< Allocator > impeller::TestImpellerContext::GetResourceAllocator ( ) const

inlineoverridevirtual

Returns the allocator used to create textures and buffers on the device.

Returns: The resource allocator. Can never be nullptr for a valid context.

Implements impeller::Context.

Definition at line 54 of file image_decoder_unittests.cc.

                                                                 {
    return std::make_shared<TestImpellerAllocator>();
  }

◆ GetSamplerLibrary()

std::shared_ptr< SamplerLibrary > impeller::TestImpellerContext::GetSamplerLibrary ( ) const

inlineoverridevirtual

Returns the library of combined image samplers used in shaders.

Returns: The sampler library. Can never be nullptr for a valid context.

Implements impeller::Context.

Definition at line 62 of file image_decoder_unittests.cc.

                                                                   {
    return nullptr;
  }

◆ GetShaderLibrary()

std::shared_ptr< ShaderLibrary > impeller::TestImpellerContext::GetShaderLibrary ( ) const

inlineoverridevirtual

Returns the library of shaders used to specify the programmable stages of a pipeline.

Returns: The shader library. Can never be nullptr for a valid context.

Implements impeller::Context.

Definition at line 58 of file image_decoder_unittests.cc.

                                                                 {
    return nullptr;
  }

◆ IsValid()

bool impeller::TestImpellerContext::IsValid ( ) const

inlineoverridevirtual

Determines if a context is valid. If the caller ever receives an invalid context, they must discard it and construct a new context. There is no recovery mechanism to repair a bad context.

It is convention in Impeller to never return an invalid context from a call that returns an pointer to a context. The call implementation performs validity checks itself and return a null context instead of a pointer to an invalid context.

How a context goes invalid is backend specific. It could happen due to device loss, or any other unrecoverable error.

Returns: If the context is valid.

Implements impeller::Context.

Definition at line 48 of file image_decoder_unittests.cc.

48{ return true; }

◆ Shutdown()

void impeller::TestImpellerContext::Shutdown ( )

inlineoverridevirtual

Force all pending asynchronous work to finish. This is achieved by deleting all owned concurrent message loops.

Implements impeller::Context.

Definition at line 79 of file image_decoder_unittests.cc.

79{}

Member Data Documentation

◆ command_buffer_count_

size_t impeller::TestImpellerContext::command_buffer_count_ = 0

mutable

Definition at line 81 of file image_decoder_unittests.cc.

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

lib/ui/painting/image_decoder_unittests.cc

Public Member Functions

Public Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ TestImpellerContext()

Member Function Documentation

◆ CreateCommandBuffer()

◆ DescribeGpuModel()

◆ GetBackendType()

◆ GetCapabilities()

◆ GetCommandQueue()

◆ GetPipelineLibrary()

◆ GetResourceAllocator()

◆ GetSamplerLibrary()

◆ GetShaderLibrary()

◆ IsValid()

◆ Shutdown()

Member Data Documentation

◆ command_buffer_count_