- Qt 5.15
- Qt 3D
- QML Types
- BlitFramebuffer QML Type
- Qt 5.15.18 Reference Documentation

# BlitFramebuffer QML Type

FrameGraph node to transfer a rectangle of pixel values from one region of a render target to another. More...

Import Statement: | import Qt3D.Render 2.15
Since: | Qt 5.10
Instantiates: | QBlitFramebuffer
Inherits: | FrameGraphNode

- List of all members, including inherited members

## Properties

- destination : RenderTarget
- destinationAttachmentPoint : RenderTargetOutput.AttachmentPoint
- destinationRect : Rect
- interpolationMethod : InterpolationMethod
- source : RenderTarget
- sourceAttachmentPoint : RenderTargetOutput.AttachmentPoint
- sourceRect : Rect

## Detailed Description

This node inserts a `glBlitFrameBuffer` or an equivalent into the command stream. This provides a more efficient method for copying rectangles between textures or surface backbuffers wrapped by QRenderTarget than drawing textured quads. It also supports scaling with the specified interpolation method.

Note: In practice the BlitFramebuffer node will often be used in combination with NoDraw since a blit should not involve issuing draw calls for any entities.

## Property Documentation

destination : RenderTarget

Specifies the destination render target. When not set, the destination is assumed to be the default framebuffer (i.e. the backbuffer of the current surface), if there is one.

Note: the source and destination must not refer to the same render target.

destinationAttachmentPoint : RenderTargetOutput.AttachmentPoint

Specifies the source attachment point. Defaults to RenderTargetOutput.AttachmentPoint.Color0.

destinationRect : Rect

Specifies the destination rectangle. The coordinates are assumed to follow the normal Qt coordinate system, meaning Y runs from top to bottom.

interpolationMethod : InterpolationMethod

Specifies the interpolation applied if the image is stretched. Defaults to Linear.

source : RenderTarget

Specifies the source render target. When not set, the source is assumed to be the default framebuffer (i.e. the backbuffer of the current surface), if there is one.

Note: the source and destination must not refer to the same render target.

sourceAttachmentPoint : RenderTargetOutput.AttachmentPoint

Specifies the source attachment point. Defaults to RenderTargetOutput.AttachmentPoint.Color0.

sourceRect : Rect

Specifies the source rectangle. The coordinates are assumed to follow the normal Qt coordinate system, meaning Y runs from top to bottom.