QDepthTest Class

class Qt3DRender ::QDepthTest

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

头：	#include <QDepthTest>
qmake:	QT += 3drender
Since:	Qt 5.7
实例化：	DepthTest
继承：	Qt3DRender::QRenderState

该类在 Qt 5.7 引入。

所有成员列表，包括继承成员

公共类型

enum	DepthFunction { Never, Always, Less, LessOrEqual, Equal, …, NotEqual }

特性

depthFunction : DepthFunction

公共函数

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

公共槽

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

信号

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

详细描述

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 does nothing.

另请参阅 QAlphaTest and QStencilTest .

成员类型文档编制

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

特性文档编制

depthFunction : DepthFunction

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

访问函数：

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

通知程序信号：

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

成员函数文档编制

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

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