QDepthTest Class

The QDepthTest class tests the fragment shader's depth value against the depth of a sample being written to. 更多...

頭：	#include <QDepthTest>
qmake:	QT += 3drender
Since:	Qt 5.7
實例化：	DepthTest
繼承：	Qt3DRender::QRenderState

公共類型

enum	DepthFunction { Never, Always, Less, LessOrEqual, ..., NotEqual }

特性

depthFunction : DepthFunction

3 特性繼承自 Qt3DCore::QNode
1 特性繼承自 QObject

公共函數

	QDepthTest (Qt3DCore::QNode * parent = nullptr)
Qt3DRender::QDepthTest::DepthFunction	depthFunction () const

13 公共函數繼承自 Qt3DCore::QNode
31 公共函數繼承自 QObject

公共槽

void	setDepthFunction (Qt3DRender::QDepthTest::DepthFunction depthFunction )

3 公共槽繼承自 Qt3DCore::QNode
1 公共槽繼承自 QObject

信號

void	depthFunctionChanged (Qt3DRender::QDepthTest::DepthFunction depthFunction )

4 信號繼承自 Qt3DCore::QNode
2 信號繼承自 QObject

靜態公共成員

const QMetaObject

staticMetaObject

9 靜態公共成員繼承自 QObject

額外繼承成員

2 保護函數繼承自 Qt3DCore::QNode
9 保護函數繼承自 QObject

詳細描述

The QDepthTest class tests the fragment shader's depth value against the depth of a sample being written to.

A QDepthTest class is used to enable depth testing with a given depth test function. The depth test enables writing fragment color values when the depth test passes, and reject fragments which fail the test. The depth test uses the depth function to test the fragments depth value to the value against z-buffer. If the underlying surface does not have z-buffer, then QDepthTest 什麼都不做。

另請參閱 QAlphaTest and QStencilTest .

成員類型文檔編製

enum QDepthTest:: DepthFunction

Enumeration for the depth function values

常量	值	描述
`Qt3DRender::QDepthTest::Never`	`0x0200`	Never pass depth test
`Qt3DRender::QDepthTest::Always`	`0x0207`	Always pass depth test
`Qt3DRender::QDepthTest::Less`	`0x0201`	Pass depth test if fragment depth is less than z-buffer value
`Qt3DRender::QDepthTest::LessOrEqual`	`0x0203`	Pass depth test if fragment depth is less than or equal to z-buffer value
`Qt3DRender::QDepthTest::Equal`	`0x0202`	Pass depth test if fragment depth is equal to z-buffer value
`Qt3DRender::QDepthTest::GreaterOrEqual`	`0x0206`	Pass depth test if fragment depth is greater than or equal to z-buffer value
`Qt3DRender::QDepthTest::Greater`	`0x0204`	Pass depth test if fragment depth is greater than z-buffer value
`Qt3DRender::QDepthTest::NotEqual`	`0x0205`	Pass depth test if fragment depth is not equal to z-buffer value

特性文檔編製

depthFunction : DepthFunction

Holds the current function used by depth test. The default is Never.

訪問函數：

Qt3DRender::QDepthTest::DepthFunction	depthFunction () const
void	setDepthFunction (Qt3DRender::QDepthTest::DepthFunction depthFunction )

通知程序信號：

void	depthFunctionChanged (Qt3DRender::QDepthTest::DepthFunction depthFunction )

成員函數文檔編製

QDepthTest:: QDepthTest ( Qt3DCore::QNode * parent = nullptr)

The constructor creates a new QDepthTest::QDepthTest instance with the specified parent .