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gl::texture Class Reference

OpenGL specific texture handle. More...

#include <texture.h>

List of all members.

Public Methods
	texture (void)
	Default Constructor.
	texture (const texture &cpy)
	Copy Constructor.
texture &	operator= (const texture &cpy)
	Assignment Operator.
void	set (GLuint handle, real_t aspect)
	Sets all aspects of the texture object.
	operator GLuint (void) const
	Cast to GLuint.
void	erase (void)
	Removes the texture from the OpenGL subsystem.
void	bind (void) const
	Binds the texture in OpenGL.
real_t	get_aspect (void) const
	Returns the aspect ratio of the image (width / height).
Static Public Methods
void	set_greyscale_format (GLenum format)
	What format OpenGL will load greyscale data in.
texture	load (const std::string &filename, bool build_mipmaps=true, GLfloat min_filter=GL_LINEAR_MIPMAP_LINEAR, GLfloat max_filter=GL_LINEAR)
	Loads the texture filename into the OpenGL subsystem. More...
texture	load (std::istream &stream, bool build_mipmaps=true, GLfloat min_filter=GL_LINEAR_MIPMAP_LINEAR, GLfloat max_filter=GL_LINEAR)
	Loads the stream as a texture into the OpenGL subsystem. More...
texture	load (image::image_t *img, bool build_mipmaps=true, GLfloat min_filter=GL_LINEAR_MIPMAP_LINEAR, GLfloat max_filter=GL_LINEAR)
	Loads the image_t* as a texture into the OpenGL subsystem. More...
Static Public Attributes
GLenum	s_greyscale_format = GL_LUMINANCE

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Detailed Description

OpenGL specific texture handle.

This object represents a texture loaded into the OpenGL subsystem. Using the object is as simple as:

 //load the texture
 gl::texture tex = gl::texture::load( "filename" );
 if( !tex ) {
     std::cerr << "could not load texture" << std::endl;
 }

 //use the texture
 glBindTexture( GL_TEXTURE_2D, tex );
 // . . .

Definition at line 37 of file texture.h.

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Member Function Documentation

gl::texture gl::texture::load (  image::image_t *    img, bool    build_mipmaps = true, GLfloat    min_filter = GL_LINEAR_MIPMAP_LINEAR, GLfloat    max_filter = GL_LINEAR )  [static]

Loads the image_t* as a texture into the OpenGL subsystem. Note: By default, mipmaps are built and trilinear filtering is used. Parameters: build_mimaps  If mipmaps should be built. min_filter  OpenGL minification filter. min_filter  OpenGL magnification filter. Definition at line 81 of file texture.cpp. References image::image_t::BYTE, image::image_t::get_bpc, image::image_t::get_format, image::image_t::get_height, image::image_t::get_pixels, image::image_t::get_width, image::image_t::GREYSCALE, image::image_t::RGB, image::image_t::RGBA, and texture.

gl::texture gl::texture::load (  std::istream &    stream, bool    build_mipmaps = true, GLfloat    min_filter = GL_LINEAR_MIPMAP_LINEAR, GLfloat    max_filter = GL_LINEAR )  [static]

Loads the stream as a texture into the OpenGL subsystem. Note: By default, mipmaps are built and trilinear filtering is used. Parameters: build_mimaps  If mipmaps should be built. min_filter  OpenGL minification filter. min_filter  OpenGL magnification filter. Definition at line 49 of file texture.cpp. References image::image_t::flip_horizontal, load, image::load, and texture.

gl::texture gl::texture::load (  const std::string &    filename, bool    build_mipmaps = true, GLfloat    min_filter = GL_LINEAR_MIPMAP_LINEAR, GLfloat    max_filter = GL_LINEAR )  [static]

Loads the texture filename into the OpenGL subsystem. Note: By default, mipmaps are built and trilinear filtering is used. Parameters: build_mimaps  If mipmaps should be built. min_filter  OpenGL minification filter. min_filter  OpenGL magnification filter. Definition at line 18 of file texture.cpp. References image::image_t::flip_horizontal, image::load, and texture. Referenced by gl::ttf::load, and load.

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