HD Scene Color node

The HD Scene Color node samples the color buffer of the current camera, using the screen space coordinates you input. The node works the same way as the Scene Color Node but returns the mipmap levels of the color buffer.

To make sure the HD Scene Color node outputs the correct values, follow these steps:

  1. Connect the node to the fragment shader stage. The HD Scene Color node doesn't support the vertex shader stage.
  2. In the Graph Settings tab of the Graph Inspector window, set Surface Type to Transparent. Otherwise, the node samples the color buffer before Unity renders all the opaque contents in the scene.

The node uses trilinear clamp mode to sample the color buffer, so it smoothly interpolates between the mipmap levels.

Render pipeline support

The HD Scene Color node supports the High Definition Render Pipeline (HDRP) only. If you use the node with an unsupported pipeline, it returns 0 (black).

If you use your own custom render pipeline, you must define the behavior of the node yourself. Otherwise, the node returns a value of 0 (black).

Ports

Name Direction Type Binding Description
UV Input Vector 4 Screen position The normalized screen space coordinates to sample from.
Lod Input float None The mipmap level to sample.
Output Output Vector 3 None The color value from the color buffer at the coordinates and mipmap level.

Properties

Property Description
Exposure Applies exposure to the camera color. This property is disabled by default to avoid double exposure.

Additional resources