brenta::types::buffer Class Reference

Buffer wrapper around OpenGL buffer objects. More...

#include <buffer.hpp>

Inheritance diagram for brenta::types::buffer:

Public Member Functions
	buffer ()
	Default constructor, does nothing.
	buffer (GLenum input_target)
	Constructor that creates a buffer object.
void	bind ()
	Bind the buffer object.
void	unbind ()
	Unbind the buffer object.
void	destroy ()
	Delete the buffer object.
int	get_id ()
	Get the buffer object id.
GLenum	get_target ()
	Get the buffer object target.
void	set_id (unsigned int id)
	Set the buffer object id.
void	set_target (GLenum target)
	Set the buffer object target.
void	copy_data (GLsizeiptr size, const void *data, GLenum usage)
	Copy data to the buffer object.
void	copy_vertices (GLsizeiptr size, const void *data, GLenum usage)
	Copy data to the buffer object.
void	copy_indices (GLsizeiptr size, const void *data, GLenum usage)
	Copy data to the buffer object.

Data Fields
unsigned int	id
	Buffer object id, generated by OpenGL.
GLenum	target
	Buffer object target (like GL_ARRAY_BUFFER, GL_ELEMENT_ARRAY_BUFFER...)

Detailed Description

Buffer wrapper around OpenGL buffer objects.

This class is a wrapper around OpenGL buffer objects. It provides a simple interface to create, bind, unbind and delete buffer objects. It also provides methods to copy data to the buffer objects.

This class offers methods to:

• create and delete buffer object
• bind and unbind buffer object
• copy data to the buffer object

Definition at line 29 of file buffer.hpp.

Constructor & Destructor Documentation

buffer() [1/2]

brenta::types::buffer::buffer ( )

inline

Default constructor, does nothing.

Definition at line 45 of file buffer.hpp.

buffer() [2/2]

buffer::buffer

(

GLenum

input_target

)

Constructor that creates a buffer object.

Parameters

target

Buffer object target

This constructor creates a buffer object with the specified target. It calls the OpenGL function glGenBuffers to generate a buffer object id and glBindBuffer to bind the buffer object. The buffer has a default destructor that deletes the buffer object when it goes out of scope.

Definition at line 12 of file buffer.cpp.

Member Function Documentation

bind()

void buffer::bind

(

)

Bind the buffer object.

Buffers must be bound before they can be used!

Definition at line 39 of file buffer.cpp.

copy_data()

void buffer::copy_data	(	GLsizeiptr	size,
		const void *	data,
		GLenum	usage )

Copy data to the buffer object.

Parameters

size	Size of the data in bytes
data	Pointer to the data
usage	OpenGL usage hint (like GL_STATIC_DRAW)

This method copies data to the buffer object. The size of the data is specified in bytes, the data is a pointer to the data and the usage is an OpenGL usage hint.

Definition at line 18 of file buffer.cpp.

copy_indices()

void buffer::copy_indices	(	GLsizeiptr	size,
		const void *	data,
		GLenum	usage )

Copy data to the buffer object.

Parameters

size	Size of the data in bytes
data	Pointer to the data
usage	OpenGL usage hint (like GL_STATIC_DRAW)

Same as copy_vertices() but for target GL_ELEMENT_ARRAY_BUFFER.

Definition at line 23 of file buffer.cpp.

copy_vertices()

void buffer::copy_vertices	(	GLsizeiptr	size,
		const void *	data,
		GLenum	usage )

Copy data to the buffer object.

Parameters

size	Size of the data in bytes
data	Pointer to the data
usage	OpenGL usage hint (like GL_STATIC_DRAW)

Same as copy_date() but for target GL_ARRAY_BUFFER. The naming is more specific to the use case.

Definition at line 31 of file buffer.cpp.

destroy()

void buffer::destroy

(

)

Delete the buffer object.

Definition at line 54 of file buffer.cpp.

get_id()

int buffer::get_id

(

)

Get the buffer object id.

Returns

Buffer object id

Definition at line 64 of file buffer.cpp.

get_target()

GLenum buffer::get_target

(

)

Get the buffer object target.

Returns

Buffer object target

Definition at line 69 of file buffer.cpp.

set_id()

void buffer::set_id

(

unsigned int

id

)

Set the buffer object id.

Parameters

id	Buffer object id

Definition at line 74 of file buffer.cpp.

set_target()

void buffer::set_target

(

GLenum

target

)

Set the buffer object target.

Parameters

target

Buffer object target

Definition at line 79 of file buffer.cpp.

unbind()

void buffer::unbind

(

)

Unbind the buffer object.

Definition at line 49 of file buffer.cpp.

Field Documentation

id

unsigned int brenta::types::buffer::id

Buffer object id, generated by OpenGL.

Definition at line 35 of file buffer.hpp.

target

GLenum brenta::types::buffer::target

Buffer object target (like GL_ARRAY_BUFFER, GL_ELEMENT_ARRAY_BUFFER...)

Definition at line 40 of file buffer.hpp.

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

• include/brenta/buffer.hpp
• src/buffer.cpp