CTexture Class Reference

Represents a texture object. More...

#include <TextureManager.h>

Collaboration diagram for CTexture:

Public Member Functions
	~CTexture ()
size_t	GetWidth () const
	Returns the width (in pixels) of the current texture. More...
size_t	GetHeight () const
	Returns the height (in pixels) of the current texture. More...
bool	HasAlpha () const
	Returns whether the current texture has an alpha channel. More...
u32	GetBaseColor () const
	Returns the ARGB value of the lowest mipmap level (i.e. More...
size_t	GetUploadedSize () const
	Returns total number of bytes uploaded for this texture. More...
void	UploadBackendTextureIfNeeded (Renderer::Backend::IDeviceCommandContext *deviceCommandContext)
	Uploads a texture data to a backend texture if successfully loaded. More...
Renderer::Backend::ITexture *	GetBackendTexture ()
	Returns a backend texture if successfully uploaded, else fallback. More...
const Renderer::Backend::ITexture *	GetBackendTexture () const
bool	TryLoad ()
	Attempt to load the texture data quickly, as with GetUploadedBackendTextureIfNeeded(). More...
bool	IsLoaded () const
	Returns whether the texture data is currently loaded. More...
bool	IsUploaded () const
	Returns whether the texture data is currently uploaded. More...
void	Prefetch ()
	Activate the prefetching optimisation for this texture. More...

Private Types
enum	{   UNLOADED, PREFETCH_NEEDS_LOADING, PREFETCH_NEEDS_CONVERTING, PREFETCH_IS_CONVERTING,   HIGH_NEEDS_CONVERTING, HIGH_IS_CONVERTING, LOADED, UPLOADED }

Private Member Functions
	NONCOPYABLE (CTexture)
	CTexture (std::unique_ptr< Renderer::Backend::ITexture > texture, Renderer::Backend::ITexture *fallback, const CTextureProperties &props, CTextureManagerImpl *textureManager)
void	ResetBackendTexture (std::unique_ptr< Renderer::Backend::ITexture > backendTexture, Renderer::Backend::ITexture *fallbackBackendTexture)

Private Attributes
const CTextureProperties	m_Properties
std::unique_ptr< Renderer::Backend::ITexture >	m_BackendTexture
Renderer::Backend::ITexture *	m_FallbackBackendTexture = nullptr
u32	m_BaseColor
std::unique_ptr< Tex >	m_TextureData
size_t	m_UploadedSize = 0
uint32_t	m_BaseLevelOffset = 0
enum CTexture:: { ... }	m_State
CTextureManagerImpl *	m_TextureManager
std::weak_ptr< CTexture >	m_Self

Friends
class	CTextureManagerImpl
class	CPredefinedTexture
struct	TextureCacheCmp
struct	TPequal_to
struct	TPhash

Detailed Description

Represents a texture object.

The texture data may or may not have been loaded yet. Before it has been loaded, all operations will act on a default 1x1-pixel grey texture instead.

Member Enumeration Documentation

anonymous enum

anonymous enum

private

Enumerator
UNLOADED
PREFETCH_NEEDS_LOADING
PREFETCH_NEEDS_CONVERTING
PREFETCH_IS_CONVERTING
HIGH_NEEDS_CONVERTING
HIGH_IS_CONVERTING
LOADED
UPLOADED

Constructor & Destructor Documentation

~CTexture()

CTexture::~CTexture ( )

default

CTexture()

CTexture::CTexture ( std::unique_ptr< Renderer::Backend::ITexture >  texture, Renderer::Backend::ITexture *  fallback, const CTextureProperties &  props, CTextureManagerImpl *  textureManager  )

explicitprivate

Member Function Documentation

GetBackendTexture() [1/2]

Renderer::Backend::ITexture * CTexture::GetBackendTexture

(

)

Returns a backend texture if successfully uploaded, else fallback.

GetBackendTexture() [2/2]

const Renderer::Backend::ITexture * CTexture::GetBackendTexture

(

)

const

GetBaseColor()

u32 CTexture::GetBaseColor

(

)

const

Returns the ARGB value of the lowest mipmap level (i.e.

the average of the whole texture). Returns 0 if the texture has no mipmaps.

GetHeight()

size_t CTexture::GetHeight

(

)

const

Returns the height (in pixels) of the current texture.

GetUploadedSize()

size_t CTexture::GetUploadedSize

(

)

const

Returns total number of bytes uploaded for this texture.

GetWidth()

size_t CTexture::GetWidth

(

)

const

Returns the width (in pixels) of the current texture.

HasAlpha()

bool CTexture::HasAlpha

(

)

const

Returns whether the current texture has an alpha channel.

IsLoaded()

bool CTexture::IsLoaded ( ) const

inline

Returns whether the texture data is currently loaded.

IsUploaded()

bool CTexture::IsUploaded ( ) const

inline

Returns whether the texture data is currently uploaded.

NONCOPYABLE()

CTexture::NONCOPYABLE ( CTexture  )

private

Prefetch()

void CTexture::Prefetch

(

)

Activate the prefetching optimisation for this texture.

Use this if it is likely the texture will be needed in the near future. It will be loaded in the background so that it is likely to be ready when it is used by Bind().

ResetBackendTexture()

void CTexture::ResetBackendTexture ( std::unique_ptr< Renderer::Backend::ITexture >  backendTexture, Renderer::Backend::ITexture *  fallbackBackendTexture  )

private

TryLoad()

bool CTexture::TryLoad

(

)

Attempt to load the texture data quickly, as with GetUploadedBackendTextureIfNeeded().

Returns whether the texture data is currently loaded (but not uploaded).

UploadBackendTextureIfNeeded()

void CTexture::UploadBackendTextureIfNeeded

(

Renderer::Backend::IDeviceCommandContext *

deviceCommandContext

)

Uploads a texture data to a backend texture if successfully loaded.

If the texture data hasn't been loaded yet, this may wait a short while to load it. If loading takes too long then it will return sooner and the data will be loaded in a background thread, so this does not guarantee the texture really will be uploaded.

Friends And Related Function Documentation

CPredefinedTexture

friend class CPredefinedTexture

friend

CTextureManagerImpl

friend class CTextureManagerImpl

friend

TextureCacheCmp

friend struct TextureCacheCmp

friend

TPequal_to

friend struct TPequal_to

friend

TPhash

friend struct TPhash

friend

Member Data Documentation

m_BackendTexture

std::unique_ptr<Renderer::Backend::ITexture> CTexture::m_BackendTexture

private

m_BaseColor

u32 CTexture::m_BaseColor

private

m_BaseLevelOffset

uint32_t CTexture::m_BaseLevelOffset = 0

private

m_FallbackBackendTexture

Renderer::Backend::ITexture* CTexture::m_FallbackBackendTexture = nullptr

private

m_Properties

const CTextureProperties CTexture::m_Properties

private

m_Self

std::weak_ptr<CTexture> CTexture::m_Self

private

m_State

enum { ... } CTexture::m_State

m_TextureData

std::unique_ptr<Tex> CTexture::m_TextureData

private

m_TextureManager

CTextureManagerImpl* CTexture::m_TextureManager

private

m_UploadedSize

size_t CTexture::m_UploadedSize = 0

private

---

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

• /zpool0/docker-engine-docs/source/graphics/TextureManager.h
• /zpool0/docker-engine-docs/source/graphics/TextureManager.cpp