Unity Script Reference – Graphics.BlitMultiTap

Graphics.BlitMultiTap

static function BlitMultiTap (source : Texture, dest : RenderTexture, mat : Material, params offsets : Vector2[]) : void

Parameters

Name	Description
source	Source texture.
dest	Destination RenderTexture, or null to blit directly to screen.
mat	Material to use for copying. Material's shader should do some post-processing effect.
offsets	Variable number of filtering offsets. Offsets are given in pixels.

Description

Copies source texture into destination, for multi-tap shader.

This is mostly used for implementing some image effects. For example, Gaussian or iterative Cone blurring samples source texture at multiple different locations.

BlitMultiTap sets dest to be active render texture, sets source as _MainTex property on the material, and draws a full-screen quad. Each vertex of the quad has multiple texture coordinates set up, offset by offsets pixels.