<![CDATA[[ANSWERED] Help needed for a Shader]]>

I have managed to add a horizontal and vertical movement to the shader "circle open", but I can't manage to get the width and height of the oval changeable to get a circle as well. Would be very grateful if someone could help me. 

The original shader:

circle-open.frag.zip

my changed version:

cercle.zip

thanks a lot

Jean-François

]]>https://community.troikatronix.com/topic/7831/answered-help-needed-for-a-shaderRSS for NodeFri, 06 Mar 2026 17:12:33 GMTSat, 19 Feb 2022 17:02:47 GMT60<![CDATA[Reply to [ANSWERED] Help needed for a Shader on Sat, 19 Feb 2022 22:27:02 GMT]]>@juriaan

yes, it is clear but if I work with two HD movie as input I get only an ovale and cannot change the proportion.

best, Jean-François 

]]>https://community.troikatronix.com/post/48474https://community.troikatronix.com/post/48474Sat, 19 Feb 2022 22:27:02 GMT<![CDATA[Reply to [ANSWERED] Help needed for a Shader on Sat, 19 Feb 2022 19:25:24 GMT]]>@jfg

So your Texture 1 should be sized to the same XY ratio as the GLSL Shader Width and Height parameters.

You will see if you connect an Shapes with 400x400 resolution to Video 1 - In and set the Width / Height to 400x400 that you will get an circle.

]]>https://community.troikatronix.com/post/48471https://community.troikatronix.com/post/48471Sat, 19 Feb 2022 19:25:24 GMT