cGLTexture

OpenGL texture class. More...

Inheritance diagram for cGLTexture:

Public Member Functions
tResult	Create (const tBitmapFormat *psFormat, tInt nMode=0)
tResult	CleanUp ()
tBool	IsCompatible (const tBitmapFormat *psFormat)
tVoid	Blit (tInt x, tInt y, tInt nWidth, tInt nHeight)
	Blits a texture to the given rectangle. More...
	operator ITexture * ()
	instance of ITexture More...
Public Member Functions inherited from ITexture
virtual	~ITexture ()
	virtual destructor to ensure proper cleanup.
virtual tResult	Release ()=0
	The Function releases the Texture. More...
virtual tResult	SetMode (tInt nMode)=0
	Set the Mode shown in tTextureMode. More...
virtual tVoid	MakeCurrent ()=0
	Sets this texture as the current texture.
virtual tResult	Copy (IImage *pSource)=0
	Fills the texture using a IImage. More...
virtual tInt	GetWidth () const =0
	Gets the width of a texture (in pixel). More...
virtual tInt	GetHeight () const =0
	Gets the height of a texture (in pixel). More...
virtual tInt	GetBitsPerPixel () const =0
	Gets the number of bits per line of a texture. More...
virtual tInt	GetPhysicalWidth () const =0
	Gets the physical width of the texture (in byte). More...
virtual tInt	GetPhysicalHeight () const =0
	Gets the physical height of the texture (in byte). More...

Static Public Member Functions
static tResult	CalcOpenGLTextureFormat (const tBitmapFormat *pBitmapInfo, GLenum *pPixelType, GLenum *pBitmapFormat, GLint *pBitmapFormatInternal)
	Calculates an OpenGL texture format based on a bitmap format. More...

Protected Attributes
tUInt	m_hTexture
tInt	m_nPhysicalWidth
tInt	m_nPhysicalHeight
tBitmapFormat	m_sFormat
ITexture::tTextureMode	m_nMode

Private Member Functions
	A_UTILS_D (cGLTexture)
	D-Pointer implementation.

Additional Inherited Members
Public Types inherited from ITexture
enum	tTextureMode { MODE_BilinearFiltered , MODE_NearestPixel }
	The enumeration shows the texture modes. More...

Detailed Description

OpenGL texture class.

Definition at line 31 of file gltexture.h.

Member Function Documentation

Blit()

tVoid Blit	(	tInt	x,
		tInt	y,
		tInt	nWidth,
		tInt	nHeight
	)

Blits a texture to the given rectangle.

The whole texture will be placed into that rectangle. Colorizing the texture by using ICanvas::Color() is not possible, because the color is set to white and the previous color is restored after blitting

Parameters

x	[in] starting position inside canvas
y	[in] starting position inside canvas
nWidth	[in] width of the destination rectangle which receives the texture
nHeight	[in] height of the destination rectangle which receives the texture

Returns

tVoid

CalcOpenGLTextureFormat()

static tResult CalcOpenGLTextureFormat ( const tBitmapFormat *  pBitmapInfo, GLenum *  pPixelType, GLenum *  pBitmapFormat, GLint *  pBitmapFormatInternal  )

static

Calculates an OpenGL texture format based on a bitmap format.

Parameters

[in]	pBitmapInfo	The input bitmap format.
[out]	pPixelType	The OpenGL pixel type.
[out]	pBitmapFormat	The OpenGL bitmap format.
[out]	pBitmapFormatInternal	The internal OpenGL bitmap format.

Returns

The standard result code.

CleanUp()

tResult CleanUp

(

)

Returns

The standard result code.

Create()

tResult Create	(	const tBitmapFormat *	psFormat,
		tInt	nMode = 0
	)

Parameters

psFormat	[in] todo
nMode	[in] todo

Returns

The standard result code.

IsCompatible()

tBool IsCompatible

(

const tBitmapFormat *

psFormat

)

Parameters

psFormat

[in] todo

Returns

todo

operator ITexture *()

operator ITexture * ( )

inlineexplicit

instance of ITexture

Returns

object

Definition at line 123 of file gltexture.h.

Member Data Documentation

m_hTexture

tUInt m_hTexture

protected

Definition at line 39 of file gltexture.h.

m_nMode

ITexture::tTextureMode m_nMode

protected

Definition at line 43 of file gltexture.h.

m_nPhysicalHeight

tInt m_nPhysicalHeight

protected

Definition at line 41 of file gltexture.h.

m_nPhysicalWidth

tInt m_nPhysicalWidth

protected

Definition at line 40 of file gltexture.h.

m_sFormat

tBitmapFormat m_sFormat

protected

Definition at line 42 of file gltexture.h.