QOpenGLPixelTransferOptions Class

The QOpenGLPixelTransferOptions class describes the pixel storage modes that affect the unpacking of pixels during texture upload. 更多...

头: #include <QOpenGLPixelTransferOptions>
qmake: QT += gui

公共函数

QOpenGLPixelTransferOptions ()
~QOpenGLPixelTransferOptions ()
int alignment () const
int imageHeight () const
bool isLeastSignificantBitFirst () const
bool isSwapBytesEnabled () const
int rowLength () const
void setAlignment (int alignment )
void setImageHeight (int imageHeight )
void setLeastSignificantByteFirst (bool lsbFirst )
void setRowLength (int rowLength )
void setSkipImages (int skipImages )
void setSkipPixels (int skipPixels )
void setSkipRows (int skipRows )
void setSwapBytesEnabled (bool swapBytes )
int skipImages () const
int skipPixels () const
int skipRows () const

详细描述

The QOpenGLPixelTransferOptions class describes the pixel storage modes that affect the unpacking of pixels during texture upload.

成员函数文档编制

QOpenGLPixelTransferOptions:: QOpenGLPixelTransferOptions ()

构造新的 QOpenGLPixelTransferOptions instance with the default settings.

QOpenGLPixelTransferOptions:: ~QOpenGLPixelTransferOptions ()

析构函数。

int QOpenGLPixelTransferOptions:: alignment () const

Returns the current alignment requirement for each pixel row.

另请参阅 setAlignment ().

int QOpenGLPixelTransferOptions:: imageHeight () const

Returns the currently set image height.

另请参阅 setImageHeight ().

bool QOpenGLPixelTransferOptions:: isLeastSignificantBitFirst () const

返回 true if bits within a byte are ordered from least to most significant.

bool QOpenGLPixelTransferOptions:: isSwapBytesEnabled () const

返回 true if the byte ordering for multibyte components is reversed.

int QOpenGLPixelTransferOptions:: rowLength () const

Returns the currently set row length.

另请参阅 setRowLength ().

void QOpenGLPixelTransferOptions:: setAlignment ( int alignment )

设置 alignment requirements for each pixel row. Corresponds to GL_UNPACK_ALIGNMENT . The default value is 4, as specified by OpenGL.

另请参阅 alignment ().

void QOpenGLPixelTransferOptions:: setImageHeight ( int imageHeight )

Sets the image height for 3D textures to imageHeight . Corresponds to GL_UNPACK_IMAGE_HEIGHT . The default value is 0.

另请参阅 imageHeight ().

void QOpenGLPixelTransferOptions:: setLeastSignificantByteFirst ( bool lsbFirst )

lsbFirst specifies if bits within a byte are ordered from least to most significat. The default value is false , meaning that the first bit in each byte is the most significant one. This is significant for bitmap data only. Corresponds to GL_UNPACK_LSB_FIRST .

void QOpenGLPixelTransferOptions:: setRowLength ( int rowLength )

Sets the number of pixels in a row to rowLength . Corresponds to GL_UNPACK_ROW_LENGTH . The default value is 0.

另请参阅 rowLength ().

void QOpenGLPixelTransferOptions:: setSkipImages ( int skipImages )

Sets the number of images that are skipped to skipImages . Corresponds to GL_UNPACK_SKIP_IMAGES . Equivalent to incrementing the pointer passed to QOpenGLTexture::setData (). The default value is 0.

另请参阅 skipImages ().

void QOpenGLPixelTransferOptions:: setSkipPixels ( int skipPixels )

Sets the number of pixels that are skipped to skipPixels . Corresponds to GL_UNPACK_SKIP_PIXELS . Equivalent to incrementing the pointer passed to QOpenGLTexture::setData (). The default value is 0.

另请参阅 skipPixels ().

void QOpenGLPixelTransferOptions:: setSkipRows ( int skipRows )

Sets the number of rows that are skipped to skipRows . Corresponds to GL_UNPACK_SKIP_ROWS . Equivalent to incrementing the pointer passed to QOpenGLTexture::setData (). The default value is 0.

另请参阅 skipRows ().

void QOpenGLPixelTransferOptions:: setSwapBytesEnabled ( bool swapBytes )

swapBytes specifies if the byte ordering for multibyte components is reversed. The default value is false . Corresponds to GL_UNPACK_SWAP_BYTES .

另请参阅 isSwapBytesEnabled ().

int QOpenGLPixelTransferOptions:: skipImages () const

Returns the number of images that are skipped.

另请参阅 setSkipImages ().

int QOpenGLPixelTransferOptions:: skipPixels () const

Returns the number of pixels that are skipped.

另请参阅 setSkipPixels ().

int QOpenGLPixelTransferOptions:: skipRows () const

Returns the number of rows that are skipped.

另请参阅 setSkipRows ().