Question by oliver9523 · Apr 07, 2016 at 05:41 PM · camera texture cookie

camera texture to spot light cookie

Hi folks, I'm quite new to Unity and am loving it but now I'm stuck.

I'm using 3 spotlights (R,G,B) and three grayscale, cookie, images each one generated from the RGB channels of a colour image. The 3 spot-lights successfully project the colour image onto surfaces within Unity.

My next task is to dynamically update the spotlight cookie with the output from a camera.

I am using a RenderTexture to map the output from a camera onto a cube, this works great.

I think I need to do the following, 1) get colorBuffer from the RenderTexture 2) split into RGB channels 3) create 3 Textures from the colorBuffer in (1), one for each colour channel 4) set each texture type to Cookie 5) update the cookie attached to each spotlight

Does that sound like a good approach?

Edit: I've noticed in MonoDevelop there is a DynamicCookie object but I can't find any documentation on how to use it...

Edit: What am I trying to do?

Link the output from a Unity Camera to the Cookie of a spotlight.

alt text

setup.jpg (116.0 kB)

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Vandive · Apr 08, 2016 at 12:46 AM 0

I wish you luck on your end-ever. I do not know if unity supports camera image rendering and if so it could be a performance killer. I am guessing that you are making some sort of security camera system but i am not sure.