class QDepthTest#

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

Synopsis#

Properties#

depthFunctionᅟ

Methods#

def __init__()
def depthFunction()

Slots#

def setDepthFunction()

Signals#

def depthFunctionChanged()

Note

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Detailed Description#

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.

See also

QAlphaTest QStencilTest

class DepthFunction#

Enumeration for the depth function values

Constant

Description

Qt3DRender.QDepthTest.Never

Never pass depth test

Qt3DRender.QDepthTest.Always

Always pass depth test

Qt3DRender.QDepthTest.Less

Pass depth test if fragment depth is less than z-buffer value

Qt3DRender.QDepthTest.LessOrEqual

Pass depth test if fragment depth is less than or equal to z-buffer value

Qt3DRender.QDepthTest.Equal

Pass depth test if fragment depth is equal to z-buffer value

Qt3DRender.QDepthTest.GreaterOrEqual

Pass depth test if fragment depth is greater than or equal to z-buffer value

Qt3DRender.QDepthTest.Greater

Pass depth test if fragment depth is greater than z-buffer value

Qt3DRender.QDepthTest.NotEqual

Pass depth test if fragment depth is not equal to z-buffer value

Constant	Description
Qt3DRender.QDepthTest.Never	Never pass depth test
Qt3DRender.QDepthTest.Always	Always pass depth test
Qt3DRender.QDepthTest.Less	Pass depth test if fragment depth is less than z-buffer value
Qt3DRender.QDepthTest.LessOrEqual	Pass depth test if fragment depth is less than or equal to z-buffer value
Qt3DRender.QDepthTest.Equal	Pass depth test if fragment depth is equal to z-buffer value
Qt3DRender.QDepthTest.GreaterOrEqual	Pass depth test if fragment depth is greater than or equal to z-buffer value
Qt3DRender.QDepthTest.Greater	Pass depth test if fragment depth is greater than z-buffer value
Qt3DRender.QDepthTest.NotEqual	Pass depth test if fragment depth is not equal to z-buffer value

Note

Properties can be used directly when from __feature__ import true_property is used or via accessor functions otherwise.

property depthFunctionᅟ: Qt3DRender.QDepthTest.DepthFunction#

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

Access functions:

depthFunction()
setDepthFunction()
Signal depthFunctionChanged()

__init__([parent=None])#

Parameters:: parent – QNode

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

depthFunction()#

Return type:: DepthFunction