Canvas3DContextAttributes QML Type

import 语句：	import QtCanvas3D 1.1
Since:	QtCanvas3D 1.0

所有成员列表，包括继承成员

特性

alpha : bool
antialias : bool
depth : bool
failIfMajorPerformanceCaveat : bool
preferLowPowerToHighPerformance : bool
premultipliedAlpha : bool
preserveDrawingBuffer : bool
stencil : bool

详细描述

Canvas3DContextAttributes is an attribute set that can be given as parameter on first call to Canvas3D 对象的 getContext(string type, Canvas3DContextAttributes options) method call. It can also be requested from the Context3D 使用 Context3D::getContextAttributes() later on to verify what exact attributes are in fact enabled/disabled in the created context.

另请参阅 Context3D and Canvas3D .

特性文档编制

alpha : bool

Specifies whether the default render target of the Context3D has an alpha channel for the purposes of blending its contents with overlapping Qt Quick items. Defaults to true .

antialias : bool

Specifies whether antialiasing buffer is created for the default render target of the Context3D 。默认为 true .

depth : bool

Specifies whether a depth attachment is to be created and attached to the default render target of the Context3D 。默认为 true .

failIfMajorPerformanceCaveat : bool

Ignored. Defaults to false .

preferLowPowerToHighPerformance : bool

Ignored. Defaults to false .

premultipliedAlpha : bool

Qt Quick always expects premultiplied alpha values when blending Qt Quick items together, so keeping this property true is recommended. Setting it to false can cause a minor performance impact, as an additional render pass is needed. Defaults to true .

preserveDrawingBuffer : bool

Specifies whether or not the drawing buffer contents are preserved from frame to frame. Ignored when drawing to the background or the foreground of the Qt Quick scene. Defaults to false .

stencil : bool

Specifies whether a stencil attachment is to be created and attached to the default render target of the Context3D 。默认为 false .