BackBufferCopy

继承： Node2D < CanvasItem < Node < Object

A node that copies a region of the screen to a buffer for access in shader code.

描述

Node for back-buffering the currently-displayed screen. The region defined in the BackBufferCopy node is buffered with the content of the screen it covers, or the entire screen according to the copy_mode. It can be accessed in shader scripts using the screen texture (i.e. a uniform sampler with hint_screen_texture).

Note: Since this node inherits from Node2D (and not Control), anchors and margins won't apply to child Control-derived nodes. This can be problematic when resizing the window. To avoid this, add Control-derived nodes as siblings to the BackBufferCopy node instead of adding them as children.

属性
CopyModecopy_mode
Rect2rect

枚举

enum CopyMode:

CopyMode COPY_MODE_DISABLED = 0

Disables the buffering mode. This means the BackBufferCopy node will directly use the portion of screen it covers.

CopyMode COPY_MODE_RECT = 1

BackBufferCopy buffers a rectangular region.

CopyMode COPY_MODE_VIEWPORT = 2

BackBufferCopy buffers the entire screen.

属性说明

CopyMode copy_mode = 1

Buffer mode. See CopyMode constants.

Rect2 rect = Rect2(-100, -100, 200, 200)

  • void set_rect ( value: Rect2 )
  • Rect2 get_rect ( )

The area covered by the BackBufferCopy. Only used if copy_mode is COPY_MODE_RECT.

1

本方法通常需要用户覆盖才能生效。

2

本方法无副作用，不会修改该实例的任何成员变量。

3

本方法除了能接受在此处描述的参数外，还能够继续接受任意数量的参数。

4

本方法用于构造某个类型。

5

调用本方法无需实例，可直接使用类名进行调用。

6

本方法描述的是使用本类型作为左操作数的有效运算符。

7

这个值是由下列位标志构成位掩码的整数。

8

无返回值。