juce::OpenGLTexture Class Reference

Creates an openGL texture from an Image. More...

#include <juce_OpenGLTexture.h>

Collaboration diagram for juce::OpenGLTexture:

Public Member Functions
	OpenGLTexture ()
	~OpenGLTexture ()
void	bind () const
	Binds the texture to the currently active openGL context. More...
int	getHeight () const noexcept
GLuint	getTextureID () const noexcept
	Returns the GL texture ID number. More...
int	getWidth () const noexcept
void	loadAlpha (const uint8 *pixels, int width, int height)
	Creates an alpha-channel texture from an array of alpha values. More...
void	loadARGB (const PixelARGB *pixels, int width, int height)
	Creates a texture from a raw array of pixels. More...
void	loadARGBFlipped (const PixelARGB *pixels, int width, int height)
	Creates a texture from a raw array of pixels. More...
void	loadImage (const Image &image)
	Creates a texture from the given image. More...
void	release ()
	Frees the texture, if there is one. More...
void	unbind () const
	Unbinds the texture to the currently active openGL context. More...

Static Public Member Functions
static bool	isValidSize (int width, int height)
	Returns true if a texture can be created with the given size. More...

Private Member Functions
void	create (int w, int h, const void *, GLenum, bool topLeft)

Private Attributes
int	height
OpenGLContext *	ownerContext
GLuint	textureID
int	width

Detailed Description

Creates an openGL texture from an Image.

@tags{OpenGL}

Constructor & Destructor Documentation

OpenGLTexture()

juce::OpenGLTexture::OpenGLTexture

(

)

~OpenGLTexture()

juce::OpenGLTexture::~OpenGLTexture

(

)

Member Function Documentation

bind()

void juce::OpenGLTexture::bind

(

)

const

Binds the texture to the currently active openGL context.

create()

void juce::OpenGLTexture::create ( int  w, int  h, const void *  , GLenum  , bool  topLeft  )

private

getHeight()

int juce::OpenGLTexture::getHeight ( ) const

inlinenoexcept

References juce::gl::height.

getTextureID()

GLuint juce::OpenGLTexture::getTextureID ( ) const

inlinenoexcept

Returns the GL texture ID number.

getWidth()

int juce::OpenGLTexture::getWidth ( ) const

inlinenoexcept

References juce::gl::width.

isValidSize()

static bool juce::OpenGLTexture::isValidSize ( int  width, int  height  )

static

Returns true if a texture can be created with the given size.

Some systems may require that the sizes are powers-of-two.

loadAlpha()

void juce::OpenGLTexture::loadAlpha	(	const uint8 *	pixels,
		int	width,
		int	height
	)

Creates an alpha-channel texture from an array of alpha values.

If width and height are not powers-of-two, the texture will be created with a larger size, and only the subsection (0, 0, width, height) will be initialised. The data is sent directly to the OpenGL driver without being flipped vertically, so the first pixel will be mapped onto texture coordinate (0, 0).

loadARGB()

void juce::OpenGLTexture::loadARGB	(	const PixelARGB *	pixels,
		int	width,
		int	height
	)

Creates a texture from a raw array of pixels.

If width and height are not powers-of-two, the texture will be created with a larger size, and only the subsection (0, 0, width, height) will be initialised. The data is sent directly to the OpenGL driver without being flipped vertically, so the first pixel will be mapped onto texture coordinate (0, 0).

loadARGBFlipped()

void juce::OpenGLTexture::loadARGBFlipped	(	const PixelARGB *	pixels,
		int	width,
		int	height
	)

Creates a texture from a raw array of pixels.

This is like loadARGB, but will vertically flip the data so that the first pixel ends up at texture coordinate (0, 1), and if the width and height are not powers-of-two, it will compensate by using a larger texture size.

loadImage()

void juce::OpenGLTexture::loadImage

(

const Image &

image

)

Creates a texture from the given image.

Note that if the image's dimensions aren't a power-of-two, the texture may be created with a larger size.

The image will be arranged so that its top-left corner is at texture coordinate (0, 1).

release()

void juce::OpenGLTexture::release

(

)

Frees the texture, if there is one.

unbind()

void juce::OpenGLTexture::unbind

(

)

const

Unbinds the texture to the currently active openGL context.

Member Data Documentation

height

int juce::OpenGLTexture::height

private

ownerContext

OpenGLContext* juce::OpenGLTexture::ownerContext

private

textureID

GLuint juce::OpenGLTexture::textureID

private

width

int juce::OpenGLTexture::width

private

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

• juce_OpenGLTexture.h