Scanline Offset Shader 3DS

From GameBrew
Scanline Offset Shader
Scanlineoffsetshader2.png
General
AuthorTheGag96
TypeDemos
Version1.0
LicenseZlib
Last Updated2022/04/19
Links
Download
Website
Source

This is a demo that simulates the common retro console effect of creating a horizontal offset for each scanline on the screen in order to make different wave effects.

To make it works efficiently, it uses a geometry shader that takes in two points at a time and makes 16 one-pixel-high strips that are then offset from a table uniform that contains a value to shift for each Y-position on the screen.

It contains the entirety of citro2d, hackily edited to work with this. it was done just for convenience - you could certainly make it play nicely with citro2d without having to edit it.

User guide

You can change some parameters for different effects.

Controls

Up/Down - Change the time step

Left/Right - Change amplitude

L/R - Change scanline speed

A - Sysle through the pattern function

Screenshots

scanlineoffsetshader3.gif

External links

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