C# Class Axiom.RenderSystems.OpenGL.GLPixelUtil

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Public Methods

Method	Description
GetClosestGLInternalFormat ( PixelFormat format ) : int	Takes the Axiom pixel format and returns the type that must be provided to GL as internal format. If no match exists, returns the closest match.
GetClosestPixelFormat ( int format ) : PixelFormat	Function to get the closest matching OGRE format to an internal GL format. To be precise, the format will be chosen that is most efficient to transfer to the card without losing precision. It is valid for this function to always return PixelFormat.A8R8G8B8.
GetGLInternalFormat ( PixelFormat format ) : int	Takes the Axiom pixel format and returns the type that must be provided to GL as internal format. GL_NONE if no match exists.
GetGLOriginDataType ( PixelFormat format ) : int	Takes the Axiom pixel format and returns type that must be provided to GL as data type for reading it into the GPU
GetGLOriginFormat ( PixelFormat format ) : int	Takes the Axiom pixel format and returns the appropriate GL one
GetMaxMipmaps ( int width, int height, int depth, PixelFormat format ) : int	Returns the maximum number of Mipmaps that can be generated until we reach the mininum format possible. This does not count the base level. In case that the format is non-compressed, this simply returns how many times we can divide this texture in 2 until we reach 1x1. For compressed formats, constraints apply on minimum size and alignment so this might differ.
OptionalPO2 ( int value ) : int	Returns next power-of-two size if required by render system, in case RSC_NON_POWER_OF_2_TEXTURES is supported it returns value as-is.

Method Details

GetClosestGLInternalFormat() public static method

Takes the Axiom pixel format and returns the type that must be provided to GL as internal format. If no match exists, returns the closest match.

public static GetClosestGLInternalFormat ( PixelFormat format ) : int
format	PixelFormat
return	int

GetClosestPixelFormat() public static method

Function to get the closest matching OGRE format to an internal GL format. To be precise, the format will be chosen that is most efficient to transfer to the card without losing precision.

It is valid for this function to always return PixelFormat.A8R8G8B8.

public static GetClosestPixelFormat ( int format ) : PixelFormat
format	int
return	PixelFormat

GetGLInternalFormat() public static method

Takes the Axiom pixel format and returns the type that must be provided to GL as internal format. GL_NONE if no match exists.

public static GetGLInternalFormat ( PixelFormat format ) : int
format	PixelFormat
return	int

GetGLOriginDataType() public static method

Takes the Axiom pixel format and returns type that must be provided to GL as data type for reading it into the GPU

public static GetGLOriginDataType ( PixelFormat format ) : int
format	PixelFormat
return	int

GetGLOriginFormat() public static method

Takes the Axiom pixel format and returns the appropriate GL one

public static GetGLOriginFormat ( PixelFormat format ) : int
format	PixelFormat	Axiom PixelFormat
return	int

GetMaxMipmaps() public static method

Returns the maximum number of Mipmaps that can be generated until we reach the mininum format possible. This does not count the base level.

In case that the format is non-compressed, this simply returns how many times we can divide this texture in 2 until we reach 1x1. For compressed formats, constraints apply on minimum size and alignment so this might differ.

public static GetMaxMipmaps ( int width, int height, int depth, PixelFormat format ) : int
width	int	The width of the area
height	int	The height of the area
depth	int	The depth of the area
format	PixelFormat	The format of the area
return	int

OptionalPO2() public static method

Returns next power-of-two size if required by render system, in case RSC_NON_POWER_OF_2_TEXTURES is supported it returns value as-is.

public static OptionalPO2 ( int value ) : int
value	int
return	int