內容

• 公共函數
• 詳細描述

QOpenGLFramebufferObjectFormat 類

The QOpenGLFramebufferObjectFormat class specifies the format of an OpenGL framebuffer object. 更多...

頭：	#include <QOpenGLFramebufferObjectFormat>
qmake:	QT += gui
Since:	Qt 5.0

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公共函數

	QOpenGLFramebufferObjectFormat ()
	QOpenGLFramebufferObjectFormat (const QOpenGLFramebufferObjectFormat & other )
	~QOpenGLFramebufferObjectFormat ()
QOpenGLFramebufferObject::Attachment	attachment () const
GLenum	internalTextureFormat () const
bool	mipmap () const
int	samples () const
void	setAttachment (QOpenGLFramebufferObject::Attachment attachment )
void	setInternalTextureFormat (GLenum internalTextureFormat )
void	setMipmap (bool enabled )
void	setSamples (int samples )
void	setTextureTarget (GLenum target )
GLenum	textureTarget () const
bool	operator!= (const QOpenGLFramebufferObjectFormat & other ) const
QOpenGLFramebufferObjectFormat &	operator= (const QOpenGLFramebufferObjectFormat & other )
bool	operator== (const QOpenGLFramebufferObjectFormat & other ) const

詳細描述

The QOpenGLFramebufferObjectFormat class specifies the format of an OpenGL framebuffer object.

A framebuffer object has several characteristics:

• Number of samples per pixels.
• Depth and/or stencil attachments.
• Texture target.
• Internal texture format.

Note that the desired attachments or number of samples per pixels might not be supported by the hardware driver. Call QOpenGLFramebufferObject::format () after creating a QOpenGLFramebufferObject to find the exact format that was used to create the frame buffer object.

另請參閱 QOpenGLFramebufferObject .

成員函數文檔編製

QOpenGLFramebufferObjectFormat:: QOpenGLFramebufferObjectFormat ()

創建 QOpenGLFramebufferObjectFormat object for specifying the format of an OpenGL framebuffer object.

By default the format specifies a non-multisample framebuffer object with no depth/stencil attachments, texture target GL_TEXTURE_2D , and internal format GL_RGBA8 . On OpenGL/ES systems, the default internal format is GL_RGBA .

另請參閱 samples (), attachment ()，和 internalTextureFormat ().

QOpenGLFramebufferObjectFormat:: QOpenGLFramebufferObjectFormat (const QOpenGLFramebufferObjectFormat & other )

構造副本為 other .

QOpenGLFramebufferObjectFormat:: ~QOpenGLFramebufferObjectFormat ()

銷毀 QOpenGLFramebufferObjectFormat .

QOpenGLFramebufferObject::Attachment QOpenGLFramebufferObjectFormat:: attachment () const

Returns the configuration of the depth and stencil buffers attached to a framebuffer object. The default is QOpenGLFramebufferObject::NoAttachment .

另請參閱 setAttachment ().

GLenum QOpenGLFramebufferObjectFormat:: internalTextureFormat () const

Returns the internal format of a framebuffer object's texture or multisample framebuffer object's color buffer. The default is GL_RGBA8 on desktop OpenGL systems, and GL_RGBA on OpenGL/ES systems.

另請參閱 setInternalTextureFormat ().

bool QOpenGLFramebufferObjectFormat:: mipmap () const

返迴 true if mipmapping is enabled.

另請參閱 setMipmap ().

int QOpenGLFramebufferObjectFormat:: samples () const

Returns the number of samples per pixel if a framebuffer object is a multisample framebuffer object. Otherwise, returns 0. The default value is 0.

另請參閱 setSamples ().

void QOpenGLFramebufferObjectFormat:: setAttachment ( QOpenGLFramebufferObject::Attachment attachment )

Sets the attachment configuration of a framebuffer object to attachment .

另請參閱 attachment ().

void QOpenGLFramebufferObjectFormat:: setInternalTextureFormat ( GLenum internalTextureFormat )

Sets the internal format of a framebuffer object's texture or multisample framebuffer object's color buffer to internalTextureFormat .

另請參閱 internalTextureFormat ().

void QOpenGLFramebufferObjectFormat:: setMipmap ( bool enabled )

Enables mipmapping if enabled 為 true；否則禁用它。

Mipmapping is disabled by default.

If mipmapping is enabled, additional memory will be allocated for the mipmap levels. The mipmap levels can be updated by binding the texture and calling glGenerateMipmap(). Mipmapping cannot be enabled for multisampled framebuffer objects.

另請參閱 mipmap () 和 QOpenGLFramebufferObject::texture ().

void QOpenGLFramebufferObjectFormat:: setSamples ( int samples )

Sets the number of samples per pixel for a multisample framebuffer object to samples . The default sample count of 0 represents a regular non-multisample framebuffer object.

If the desired amount of samples per pixel is not supported by the hardware then the maximum number of samples per pixel will be used. Note that multisample framebuffer objects can not be bound as textures. Also, the GL_EXT_framebuffer_multisample extension is required to create a framebuffer with more than one sample per pixel.

另請參閱 samples ().

void QOpenGLFramebufferObjectFormat:: setTextureTarget ( GLenum target )

Sets the texture target of the texture attached to a framebuffer object to target . Ignored for multisample framebuffer objects.

另請參閱 textureTarget () 和 samples ().

GLenum QOpenGLFramebufferObjectFormat:: textureTarget () const

Returns the texture target of the texture attached to a framebuffer object. Ignored for multisample framebuffer objects. The default is GL_TEXTURE_2D .

另請參閱 setTextureTarget () 和 samples ().

bool QOpenGLFramebufferObjectFormat:: operator!= (const QOpenGLFramebufferObjectFormat & other ) const

返迴 false if all the options of this framebuffer object format are the same as other ；否則返迴 true .

QOpenGLFramebufferObjectFormat &QOpenGLFramebufferObjectFormat:: operator= (const QOpenGLFramebufferObjectFormat & other )

賦值 other 到此對象。

bool QOpenGLFramebufferObjectFormat:: operator== (const QOpenGLFramebufferObjectFormat & other ) const

返迴 true if all the options of this framebuffer object format are the same as other ；否則返迴 false .