CEGUI::OpenGLInfo Class Reference

Provides information about the type of OpenGL used by an OpenGL context (desktop OpenGL or OpenGL ES), the OpenGL version, and the OpenGL extensions. More...

Public Types
enum	Type { TYPE_NONE, TYPE_DESKTOP, TYPE_ES }
	Type of the OpenGL (desktop or ES) context. More...

Public Member Functions
void	init ()
	Must be called before any other method. More...
Type	type () const
	Type of the OpenGL (desktop or ES) context.
bool	isUsingDesktopOpengl () const
	Returns true if using Desktop OpenGL.
bool	isUsingOpenglEs () const
	Returns true if using OpenGL ES.
GLint	verMajor () const
	Returns OpenGL (desktop or ES) major version. Only supports Epoxy! Otherwise returns -1;.
GLint	verMinor () const
	Returns OpenGL (desktop or ES) minor version. Only supports Epoxy! Otherwise returns -1;.
bool	verAtLeast (GLint major, GLint minor)
	Returns true if the OpenGL (desktop or ES) version is at least "major.minor". Only supports Epoxy! Otherwise returns false.
bool	isS3tcSupported () const
	Returns true if "S3TC" texture compression is supported. More...
bool	isNpotTextureSupported () const
	Returns true if NPOT (non-power-of-two) textures are supported.
bool	isReadBufferSupported () const
	Returns true if "glReadBuffer" is supported.
bool	isPolygonModeSupported () const
	Returns true if "glPolygonMode" is supported.
bool	isVaoSupported () const
	Returns true if VAO-s (Vertex Array Objects) are supported.
bool	isSeperateReadAndDrawFramebufferSupported () const
	Returns true if working with the read/draw framebuffers seperately is supported.
bool	isSizedInternalFormatSupported () const
void	verForce (GLint verMajor_, GLint verMinor_)

Static Public Member Functions
static OpenGLInfo &	getSingleton ()

Detailed Description

Provides information about the type of OpenGL used by an OpenGL context (desktop OpenGL or OpenGL ES), the OpenGL version, and the OpenGL extensions.

Member Enumeration Documentation

enum CEGUI::OpenGLInfo::Type

Type of the OpenGL (desktop or ES) context.

Enumerator
TYPE_NONE	Not initalized yet
TYPE_DESKTOP	Desktop OpenGL
TYPE_ES	OpenGL ES

Member Function Documentation

void CEGUI::OpenGLInfo::init

(

)

Must be called before any other method.

Note that the information returned by other methods is with respect to the OpenGL (desktop or ES) context that was current when this method was called.

bool CEGUI::OpenGLInfo::isS3tcSupported ( ) const

inline

Returns true if "S3TC" texture compression is supported.

Note: Works only with Epoxy OR with desktop OpenGL >= 3.0. Otherwise returns false.