Is it possible to simulate chromatic aberation?
how about depth of field?
Id like to simulate those and control them via script if possible?
Tj
Chromatic aberration: yes. I’d imagine that would be an image postprocessing effect that jitters RGB channels a bit (more distortion toward the edges of the screen, etc.)?
Depth of Field: yes. A simple implementation is in Shader Replacement project on our resources area.
aha!
thank you.
Tj
quick question…
where might I start to figuring out how to do post-processing effect ( aberration ) ?
How do I get access to the entire image for pixel manipulation? Is that possible from camera image?
Tj
Take a look at how other image effects are implemented (import Pro Standard Assets into an empty project for a start). One of the simplest ones is Sepia filter, for example. That one just reads input pixel and outputs sepia-colored pixel. If you take a look at Vortex or Twirl effects, they do distort the image.
aha
thank you - I will look at those next!
cheers thanks for the quick advice.
Tj
Hi
i loaded up the shader samples and found the refractive and water demo…
I noticed it only works in the Pro app - and not in iPhone version…
is the iPhone not capable of doing refractive shading? Id like to create some ‘lenses’ that the camera must see thru - but if I cant do it in Unity on iPhone - I will have to fake it some other way.
?
Tj
Oh, the iPhone is like a graphics card from 1999s. It can’t do pixel shaders and all that stuff. So no, no refraction, chromatic aberration or depth of field there.
darn.
ok I will have to find a way to fake it.
Tj
The only option is a single gui texture or something similar basing on a single object. Doing it dynamically is CPU performance wise a big no go unless you wanted to have the effect only which I highly doubt.
Think of the iPhone as a P3 500Mhz with an NVIDIA TNT2 / GeForce 1 card and 96MB of RAM
Gives you an idea what to expect performance and possibility wise.