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Close| 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. |
Copies source texture into destination, for multi-tap shader.
This is mostly used for implementing some [post-processing 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.
See Also: Graphics.Blit, [post-processing effects.