Aire::Texture2D Class Reference

A 2D texture class. More...

#include <texture.h>

Inheritance diagram for Aire::Texture2D:

Collaboration diagram for Aire::Texture2D:

Public Member Functions
	Texture2D (int width, int height, GLsizei levels, GLenum internalformat)
void	setData (int xOffset, int yOffset, int width, int height, const unsigned char *data, GLenum format=GL_RGBA, GLenum type=GL_UNSIGNED_BYTE, int level=0)
void	generateMipmaps ()
	Generate mipmaps. It is assumed that there is allocated memory for all levels.
virtual	~Texture2D () override
	Destroy the texture.
	Texture2D (const Texture2D &)=delete
Texture2D &	operator= (const Texture2D &)=delete
Public Member Functions inherited from Aire::Texture
	Texture ()
	Create the texture.
uint32_t	getSize ()
GLuint	getHandle () const
virtual	~Texture ()=0
	Destroy the texture.
void	bindTexUnit (GLint textureUnit)
void	setFiltering (GLint minFilter, GLint maxFilter)
void	setWrapping (GLint wrapS, GLint wrapT, GLint wrapR)
unsigned char *	getImageData ()
void	setImageData (unsigned char *)
Public Member Functions inherited from Aire::Resource
	Resource ()
	Default constructor.
virtual	~Resource ()
	Default destructor.
bool	isLoadToGpu ()
ResourceState	getState ()
void	setState (ResourceState state)

Additional Inherited Members
Public Attributes inherited from Aire::Texture
int	texWidth
int	texHeight
int	texChannels
std::string	dir
Protected Attributes inherited from Aire::Texture
GLuint	handle
unsigned char *	imageData
Protected Attributes inherited from Aire::Resource
ResourceState	resourceState

Detailed Description

A 2D texture class.

Constructor & Destructor Documentation

Texture2D()

Texture2D::Texture2D	(	int	width,
		int	height,
		GLsizei	levels,
		GLenum	internalformat )

Create a new 2D texture. See: https://registry.khronos.org/OpenGL-Refpages/gl4/html/glTexStorage2D.xhtml

Parameters

width	Width of the texture in number of pixels (texels).
height	Height of the texture in number of pixels (texels).
levels	Number of levels in the mipmap hierarchy to allocate. If 0, allocate the full hierarchy. Note that this is a custom treatment of the 0 value. A native OpenGL call with levels=0 will produce an error.
internalformat	The format of the texture data. See link for details.

Member Function Documentation

setData()

void Texture2D::setData	(	int	xOffset,
		int	yOffset,
		int	width,
		int	height,
		const unsigned char *	data,
		GLenum	format = GL_RGBA,
		GLenum	type = GL_UNSIGNED_BYTE,
		int	level = 0 )

Set the image data for a region of the texture. See: https://registry.khronos.org/OpenGL-Refpages/gl4/html/glTexSubImage2D.xhtml

Parameters

xOffset	The x-coordinate of the lower-left corner of the pixel region to be updated. Must be non-negative but smaller than texture width.
yOffset	The y-coordinate of the lower-left corner of the pixel region to be updated. Must be non-negative but smaller than texture height.
width	The width of the pixel region to be updated.
height	The height of the pixel region to be updated.
data	A pointer to the image data (a row-major 2D array assumed, with the appropriate width and height).
format	The format of the image data. Defaults to 4-channel GL_RGBA.
type	The type of the image data. Defaults to GL_UNSIGNED_BYTE.
level	The level in the mipmap hierarchy.

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

• source/rendering/texture.h
• source/rendering/texture.cpp