Extract previous WorldViewProjection matrix

[Nlelith]

Hi,

I'm trying to implement the GPU Gems 3 motion blur shader (link), but I'm currently stuck because that approach needs the previous frame's WorldViewProjection matrix to calculate the per-pixel velocity. I've thought about using the text buffer to store that matrix but I don't see a way to get that value, since I can't "export" any numerical values from the HLSL-shader-node.

Now I'm wondering if that's even possible in Ventuz somehow, and if it's not, if there's another way to implement motion blur in Ventuz.

I've also thought about using the method described here, but as far as I'm concerned, that method falls apart if there's an object moving in front of anything else but the background.

Any help is appreciated, thanks in advance!

[Daniel Willer]

Hi,

You can solve your problem with the GetWorldNode that delivers the WorldViewProjection matrices and the LoopBreaker node that has 1 frame delay by design.
But you need a Ventuz professional or professional learners edition license.

Cheers!

[Nlelith]

Wow, that was quick. Thank you very much!