cGLTexture

OpenGL texture class. More...

#include <gltexture.h>

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

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.

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

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 84 of file gltexture.h.

Constructor & Destructor Documentation

cGLTexture()

cGLTexture ( )

inline

Definition at line 94 of file gltexture.h.

~cGLTexture()

~cGLTexture ( )

inline

Definition at line 102 of file gltexture.h.

Member Function Documentation

Blit()

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

inline

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

Definition at line 521 of file gltexture.h.

References m_hTexture, m_nPhysicalHeight, m_nPhysicalWidth, m_sFormat, and ITexture::MakeCurrent().

CalcOpenGLTextureFormat()

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

inlinestatic

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.

Definition at line 572 of file gltexture.h.

References tBitmapFormat::nPixelFormat, IImage::PF_16BIT, IImage::PF_24BIT, IImage::PF_32BIT, IImage::PF_8BIT, IImage::PF_ABGR_1555, IImage::PF_ABGR_8888, IImage::PF_ARGB_1555, IImage::PF_ARGB_8888, IImage::PF_BGR_888, IImage::PF_BGRA_5551, IImage::PF_BGRA_8888, IImage::PF_BGRx_8888, IImage::PF_GREYSCALE_16, IImage::PF_GREYSCALE_24, IImage::PF_GREYSCALE_32, IImage::PF_GREYSCALE_8, IImage::PF_RGB_555, IImage::PF_RGB_565, IImage::PF_RGB_888, IImage::PF_RGBA_5551, IImage::PF_RGBA_8888, IImage::PF_RGBx_8888, IImage::PF_xBGR_8888, IImage::PF_xRGB_8888, and IImage::PF_YUV420P_888.

Referenced by Create().

CleanUp()

tResult CleanUp ( )

inline

Returns

The standard result code.

Definition at line 186 of file gltexture.h.

References m_hTexture, and m_sFormat.

Referenced by Create().

Create()

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

inline

Parameters

psFormat	[in] todo
nMode	[in] todo

Returns

The standard result code.

Definition at line 113 of file gltexture.h.

References CalcOpenGLTextureFormat(), CleanUp(), cImage::Create(), cImage::GetBitmap(), cImage::GetPixelFormatIdentifier(), m_hTexture, cImage::m_nDefaultLineAlignment, m_nMode, m_nPhysicalHeight, m_nPhysicalWidth, m_sFormat, ITexture::MODE_NearestPixel, tBitmapFormat::nHeight, and tBitmapFormat::nWidth.

IsCompatible()

tBool IsCompatible ( const tBitmapFormat * psFormat )

inline

Parameters

psFormat

[in] todo

Returns

todo

Definition at line 500 of file gltexture.h.

References m_sFormat, tBitmapFormat::nBitsPerPixel, tBitmapFormat::nHeight, tBitmapFormat::nPaletteSize, and tBitmapFormat::nWidth.

operator ITexture *()

operator ITexture * ( )

inlineexplicit

instance of ITexture

Returns

object

Definition at line 798 of file gltexture.h.

Member Data Documentation

m_hTexture

tUInt m_hTexture

protected

Definition at line 87 of file gltexture.h.

Referenced by Blit(), CleanUp(), and Create().

m_nMode

ITexture::tTextureMode m_nMode

protected

Definition at line 91 of file gltexture.h.

Referenced by Create().

m_nPhysicalHeight

tInt m_nPhysicalHeight

protected

Definition at line 89 of file gltexture.h.

Referenced by Blit(), and Create().

m_nPhysicalWidth

tInt m_nPhysicalWidth

protected

Definition at line 88 of file gltexture.h.

Referenced by Blit(), and Create().

m_sFormat

tBitmapFormat m_sFormat

protected

Definition at line 90 of file gltexture.h.

Referenced by Blit(), CleanUp(), Create(), and IsCompatible().