Unity Products:Amplify Shader Editor/Grab Screen Position
Grab Screen Position Node
The Grab Screen Position node outputs a transformed screen position of the current pixel, ready to be directly used on a Grab Screen Color node.
According to the selected Type parameter the position value can be either in Screen Coordinates, [ 0, Screen Width - 1 ] for X axis and [ 0, Screen Height - 1 ] for Y axis, or in a normalized [0,1] range for both axis.
NOTE: This node is similar to Screen Position but internally does some additional steps to ensure that it takes both VR Single Pass Stereo and vertical orientation API differences ( Screen Space coordinates origin starting on top left corner instead of bottom left corner ) into account. This way when used with Grab Screen Color will always fetch the desired color from a Grab Pass.
|Defines how the screen position value should be presented
|Returns the Grab Screen Position value
|Returns only the X component of the Grab Screen Position
|Returns only the Y component of the Grab Screen Position
|Returns only the Z component of the Grab Screen Position
|Returns only the W component of the Grab Screen Position