OpenGL utility class. More...

#include <opengl.h>

Friends
class	CL_OpenGLGraphicContextProvider
Attributes

static CL_GLFunctions *	functions
	Function table for OpenGL 2.0.
static CL_ProcAddress *	get_proc_address (const CL_String8 &function_name)
	Get OpenGL extension specific function address.
static int	get_textureformat_bits (CL_TextureFormat format)
	Returns the number of bits in a texture format.
static bool	to_opengl_pixelformat (CL_TextureFormat texture_format, CLenum &format, CLenum &type)
	Get a OpenGL format out of a pixel format.
static void	to_opengl_textureformat (CL_TextureFormat format, CLint &gl_internal_format, CLenum &gl_pixel_format)
	To opengl textureformat.
static void	set_active (CL_GraphicContext &gc)
	Sets the thread's OpenGL context to the one used by the graphic context.
static void	set_active (const CL_OpenGLGraphicContextProvider *const gc_provider)
	Sets the thread's OpenGL context to the one used by the graphic context.
static bool	set_active ()
	Sets the thread's OpenGL context to the first valid allocated one.
static void	check_error ()
	Throw an exception if an OpenGL error was detected ( Using clGetError() ).

Detailed Description

OpenGL utility class.

Member Function Documentation

static void CL_OpenGL::check_error ( ) [static]

Throw an exception if an OpenGL error was detected ( Using clGetError() ).

Remember to call clGetError() to clear any previous errors

static CL_ProcAddress* CL_OpenGL::get_proc_address ( const CL_String8 & function_name ) [static]

Get OpenGL extension specific function address.

static int CL_OpenGL::get_textureformat_bits ( CL_TextureFormat format ) [static]

Returns the number of bits in a texture format.

static bool CL_OpenGL::set_active ( ) [static]

Sets the thread's OpenGL context to the first valid allocated one.

If a valid OpenGL context is not found, then "no render context" is set.

Returns:: true = Success. false = No OpenGL contexts could be found

static void CL_OpenGL::set_active ( CL_GraphicContext & gc ) [static]

Sets the thread's OpenGL context to the one used by the graphic context.

static void CL_OpenGL::set_active ( const CL_OpenGLGraphicContextProvider *const gc_provider ) [static]

Sets the thread's OpenGL context to the one used by the graphic context.

static bool CL_OpenGL::to_opengl_pixelformat	(	CL_TextureFormat	texture_format,
		CLenum &	format,
		CLenum &	type
	)			`[static]`

Get a OpenGL format out of a pixel format.

The function returns false if pixelformat color depth is not convertible to OpenGL pixel format, otherwise the format and type are returned with values in format and type.