VFX Graph Vector Array Input

Question

I'd like to create a particle system with the Visual Effects Graph which is basically an OcTree viewer. So the particles will remain completely stationary and the input will be an array of vectors. Is this possible and how would I go about implementing this?

Thank you for your time.

Answer 1

Answer by andrew-lukasik · Jun 02, 2021 at 02:54 PM

Dos:

Create a TextureFormat.RGBAHalf or TextureFormat.RGBAFloat texture of appropriate size
Fill this texture with your vector array values
Call texture.Apply() to send the data
Call m_visualEffect.SetTexture( "my vectors" , texture ); to bind it
Sample this texture inside your graph and be merry.
Destroy texture when scene unloads so it won't leak.

Don'ts:

do not use Color32 as it will trim and compress your values
do not use TextureFormat.RGBA32 or TextureFormat.RGB24 as those will clamp your values

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VFX Graph Vector Array Input

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