A 1D array stored on the GPU, backed by a buffer object. More...

Public Member Functions
	~BufferTexture ()

shared_ptr< GLPixelTransferBuffer >	buffer ()
	The underlying OpenGL Pixel Buffer Object. More...

const ImageFormat *	format () const

GLenum	glslSamplerType () const
	The sampler type this type of data corresponds to... More...

unsigned int	openGLID () const

unsigned int	openGLTextureTarget () const
	The OpenGL texture target this binds to (always GL_TEXTURE_BUFFER) More...

int	size () const
	Number of pixels (underlying buffer width x height) More...

bool	someTexelsInaccessible () const
	Returns true if the buffer associated with this texture has more texels than GL_MAX_TEXTURE_BUFFER_SIZE. More...

Static Public Member Functions
static shared_ptr< BufferTexture >	create (const String &name, const shared_ptr< GLPixelTransferBuffer > &buffer)

Detailed Description

A 1D array stored on the GPU, backed by a buffer object.

Commonly used as storage for GL Compute data.

Abstraction of OpenGL buffer textures. Buffer textures have a different size limit than normal 1D textures, have a special creation path, and are more or less special cases in every way. Instead of shoehorning them into G3D::Texture, we created this lightweight wrapper. This decision may be revisited in the near future, and the functionality rolled into G3D::Texture (or G3D::GLPixelTransferBuffer).

It is valid to create a buffer texture from a buffer with a larger number of texels than GL_MAX_TEXTURE_BUFFER_SIZE, but one can only access the first GL_MAX_TEXTURE_BUFFER_SIZE texels from the buffer texture. Use someTexelsInaccessible() to check if there are inaccessible texels in this object because of that.

Currently only allowed to be created from a GLPixelTransferBuffer... this will change in the near future

See also: G3D::Texture

Constructor & Destructor Documentation

◆ ~BufferTexture()

G3D::BufferTexture::~BufferTexture ( )

Member Function Documentation

◆ buffer()

shared_ptr<GLPixelTransferBuffer> G3D::BufferTexture::buffer ( )

inline

The underlying OpenGL Pixel Buffer Object.

◆ create()

static shared_ptr<BufferTexture> G3D::BufferTexture::create	(	const String &	name,
		const shared_ptr< GLPixelTransferBuffer > &	buffer
	)

static

◆ format()

const ImageFormat* G3D::BufferTexture::format ( ) const

◆ glslSamplerType()

GLenum G3D::BufferTexture::glslSamplerType ( ) const

The sampler type this type of data corresponds to...

used for binding to shaders

◆ openGLID()

unsigned int G3D::BufferTexture::openGLID ( ) const

inline

◆ openGLTextureTarget()

unsigned int G3D::BufferTexture::openGLTextureTarget ( ) const

The OpenGL texture target this binds to (always GL_TEXTURE_BUFFER)

◆ size()

int G3D::BufferTexture::size ( ) const

Number of pixels (underlying buffer width x height)

◆ someTexelsInaccessible()

bool G3D::BufferTexture::someTexelsInaccessible ( ) const

Returns true if the buffer associated with this texture has more texels than GL_MAX_TEXTURE_BUFFER_SIZE.

This is valid, but the texels out of this range will be inaccessible in shaders.

Public Member Functions

Static Public Member Functions