Detailed Description

A type of ImagePixelData that stores its image data in an OpenGL framebuffer, allowing a JUCE Image object to wrap a framebuffer.

By creating an Image from an instance of an OpenGLFrameBufferImage, you can then use a Graphics object to draw into the framebuffer using normal JUCE 2D operations.

OpenGLFrameBuffer only supports RGBA framebuffers, so single channel images keep their image data in CPU memory instead, and upload it to a texture when drawn. For these images getFrameBufferFrom() will return nullptr.

A request for an Image::RGB image is promoted to Image::ARGB, and will use a framebuffer in the same way as an Image::ARGB request.

See also: Image, ImageType, ImagePixelData, OpenGLFrameBuffer

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

juce_opengl/opengl/juce_OpenGLImage.h

Inheritance diagram for juce::OpenGLImageType:

Public Member Functions
	OpenGLImageType ()
	~OpenGLImageType () override
ImagePixelData::Ptr	create (Image::PixelFormat format, int width, int height, bool shouldClearImage) const override
	Creates a new image of this type, and the specified parameters.
int	getTypeID () const override
	Must return a unique number to identify this type.
Public Member Functions inherited from juce::ImageType
	ImageType ()
virtual	~ImageType ()
virtual Image	convert (const Image &source) const
	Returns an image which is a copy of the source image, but using this type of storage mechanism.

Static Public Member Functions
static OpenGLFrameBuffer *	getFrameBufferFrom (const Image &)

Constructors and Destructors

◆ OpenGLImageType()

juce::OpenGLImageType::OpenGLImageType ( )

◆ ~OpenGLImageType()

juce::OpenGLImageType::~OpenGLImageType ( )

override

Member Functions

◆ create()

ImagePixelData::Ptr juce::OpenGLImageType::create	(	Image::PixelFormat	,
		int	width,
		int	height,
		bool	shouldClearImage ) const

overridevirtual

Creates a new image of this type, and the specified parameters.

Implements juce::ImageType.

◆ getTypeID()

int juce::OpenGLImageType::getTypeID ( ) const

overridevirtual

Must return a unique number to identify this type.

Implements juce::ImageType.

◆ getFrameBufferFrom()

OpenGLFrameBuffer * juce::OpenGLImageType::getFrameBufferFrom ( const Image & )

static