Helper functions for OpenGL. More...

Classes
class	COpenGLState
	Helper Class to store and restore the OpenGL state. More...

Functions
void	deleteTextureFromMemory (CGUITexture *pGUITexture)
	Deleted a texture from memory if it uses its own memory. More...

ImTextureID	copyTextureIDFromGUIFont (void)
	Copies the current loaded GUI Fonts into the GPU memory. More...

ImTextureID	getTextureIDFromIrrlichtTexture (irr::video::ITexture *pTexture)
	Extracts the GPU memory ID for GUI usage from the ITexture object. More...

ImTextureID	copyTextureIDFromIrrlichtTexture (irr::video::ITexture *pTexture)
	Copies the content of an ITexture object into the GPU memory. More...

ImTextureID	copyTextureIDFromIrrlichtImage (irr::video::IImage *pImage)
	Copies the content of an IImage object into the GPU memory. More...

ImTextureID	createTextureIDFromRawData (EColorFormat ColorFormat, irr::u8 *pPixelData, irr::u32 Width, irr::u32 Height)
	Creates an new texture from raw data inside the GPU memory. When the color format does not fit to the OpenGL format, it will be translated automatically. More...

ImTextureID	createTextureInMemory (GLint OpenGLColorFormat, irr::u8 *pPixelData, irr::u32 Width, irr::u32 Height)
	Creates an new texture from raw data inside the GPU memory. For this, the Color Format must be already in an OpenGL accepted format! More...

void	copyARGBImageToRGBA (irr::u32 pSource, irr::u32 pDestination, irr::u32 Width, irr::u32 Height)
	Translates an image in ARGB format (used by Irrlicht) to an image in RGBA format (used by OpenGL). More...

GLenum	getGlEnum (GLenum const Which)

void	restoreGLBit (GLenum const WhichBit, bool const Value)
	Restores an OpenGL Bit. More...

Detailed Description

Helper functions for OpenGL.

Function Documentation

void IrrIMGUI::Private::Driver::OpenGLHelper::copyARGBImageToRGBA	(	irr::u32 *	pSource,
		irr::u32 *	pDestination,
		irr::u32	Width,
		irr::u32	Height
	)

Translates an image in ARGB format (used by Irrlicht) to an image in RGBA format (used by OpenGL).

Parameters

pSource	Is a pointer to the source data array.
pDestination	Is a pointer to the destination data array.
Width	Is the number of X pixels.
Height	Is the number of Y pixels.

Definition at line 566 of file COpenGLIMGUIDriver.cpp.

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ImTextureID IrrIMGUI::Private::Driver::OpenGLHelper::copyTextureIDFromGUIFont ( void )

Copies the current loaded GUI Fonts into the GPU memory.

Returns: Returns a GPU memory ID.

Definition at line 746 of file COpenGLIMGUIDriver.cpp.

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ImTextureID IrrIMGUI::Private::Driver::OpenGLHelper::copyTextureIDFromIrrlichtImage ( irr::video::IImage * pImage )

Copies the content of an IImage object into the GPU memory.

Parameters

pImage Is a pointer to a IImage object.

Returns: Returns a GPU memory ID.

Definition at line 647 of file COpenGLIMGUIDriver.cpp.

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ImTextureID IrrIMGUI::Private::Driver::OpenGLHelper::copyTextureIDFromIrrlichtTexture ( irr::video::ITexture * pTexture )

Copies the content of an ITexture object into the GPU memory.

Parameters

pTexture Is a pointer to a ITexture object.

Returns: Returns a GPU memory ID.

Definition at line 673 of file COpenGLIMGUIDriver.cpp.

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ImTextureID IrrIMGUI::Private::Driver::OpenGLHelper::createTextureIDFromRawData	(	EColorFormat	ColorFormat,
		irr::u8 *	pPixelData,
		irr::u32	Width,
		irr::u32	Height
	)

Creates an new texture from raw data inside the GPU memory. When the color format does not fit to the OpenGL format, it will be translated automatically.

Parameters

ColorFormat	Is the used Color Format inside the raw data.
pPixelData	Is a pointer to the image array.
Width	Is the number of X pixels.
Height	Is the number of Y pixels.

Returns: Returns a GPU memory ID.

Definition at line 605 of file COpenGLIMGUIDriver.cpp.

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ImTextureID IrrIMGUI::Private::Driver::OpenGLHelper::createTextureInMemory	(	GLint	OpenGLColorFormat,
		irr::u8 *	pPixelData,
		irr::u32	Width,
		irr::u32	Height
	)

Creates an new texture from raw data inside the GPU memory. For this, the Color Format must be already in an OpenGL accepted format!

Parameters

OpenGLColorFormat	Is the used OpenGL compatible Color Format inside the raw data.
pPixelData	Is a pointer to the image array.
Width	Is the number of X pixels.
Height	Is the number of Y pixels.

Returns: Returns a GPU memory ID.

Definition at line 582 of file COpenGLIMGUIDriver.cpp.

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void IrrIMGUI::Private::Driver::OpenGLHelper::deleteTextureFromMemory ( CGUITexture * pGUITexture )

Deleted a texture from memory if it uses its own memory.

Parameters

pGUITexture Is a CGUITexture object where the GPU memory should be deleted from.

Definition at line 762 of file COpenGLIMGUIDriver.cpp.

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GLenum IrrIMGUI::Private::Driver::OpenGLHelper::getGlEnum ( GLenum const Which )

Returns: Returns the value of an OpenGL Enum Value

Parameters

Which is the enum where we want to know the value.

Definition at line 774 of file COpenGLIMGUIDriver.cpp.

ImTextureID IrrIMGUI::Private::Driver::OpenGLHelper::getTextureIDFromIrrlichtTexture ( irr::video::ITexture * pTexture )

Extracts the GPU memory ID for GUI usage from the ITexture object.

Parameters

pTexture Is a pointer to a ITexture object.

Returns: Returns a GPU memory ID.

Definition at line 709 of file COpenGLIMGUIDriver.cpp.

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void IrrIMGUI::Private::Driver::OpenGLHelper::restoreGLBit	(	GLenum const	WhichBit,
		bool const	Value
	)

Restores an OpenGL Bit.

Parameters

WhichBit	is the bit to restore.
Value	must be true or false, whether it was set or cleared.

Definition at line 781 of file COpenGLIMGUIDriver.cpp.

Classes

Functions

Detailed Description

Function Documentation