Ventuz Forum

Is there a way in Ventuz to do the difference mode that is in Photoshop? Where 2 exact images on top of each other would result in a black or transparent image?

If there is, then is there a way to measure and record that amount of black? Such as from the histogram or luma values?

Yes there is using a custom Shader. There was a Photoshop Layer Mode Shader going around on the forum. http://forum.ventuz.com/viewtopic.php?f ... shop#p5262

Or do it yourself if you are into that sort of thing. Should only be a few lines of code. Here is some interesting information and GLSL/HLSL code about it. http://mouaif.wordpress.com/2009/01/05/ ... l-shaders/

Chris