light effect like BF3

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i'm not even sure what to call this i've seen a lot of names for this bokeh lens flare , Dirt effect ? anyone got a tutorial how to do this in unity pro ? i don't want ready to use and worthless packages! real tutorials or atleast give me an idea how to do this ? plz response this is important for me!!

Answer 1

Answer by HeavyPepper · May 13, 2013 at 03:41 PM

That is a pretty broad question but yes the effect is called bokeh and the BF effect simulates light glare on the camera. To get a similar effect you'll need a simple semi-transparent GUI Texture and some very basic script.

Using Photoshop start by creating your GUI Texture with the bokeh effect. A series of semi-transparent, slightly blurred circles work well. Ensure they're set with a transparency and save your final image with an alpha channel.
In Unity place your GUI Texture in the scene and apply a transparency shader. You should see the bokeh texture on screen and be able to see through it.
With script we want the bokeh to only show when a light source is in view. You could do this by placing a script on the GUI Texture which checks for items with a specific tag. If "tag" is visible, turn on bokeh. Alternatively you could attach your script to the light itself, so when visible the GUI Texture is enabled. Example:

function OnBecameVisible() { guiTexture.enabled = true; }

function OnBecameInVisible() { guiTexture.enabled = false; }

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parsa_dragon93 · May 14, 2013 at 09:02 PM 0

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yep i've made it ! looks like thats the easiest way to do that and it looks pretty good! but i was wondering if i can make it a little complicated ! u see in BT3 it looks like some GUI textures are only visible when the light is in a special area of the screen! how can i do this?

HeavyPepper · May 16, 2013 at 08:00 PM 0

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Look into Camera.WorldToScreenPoint which converts a GameObjects world coordinates to screen coordinates. You could then determine what side of the screen your light source is on. If you split your bokeh effect into two GUI textures you can then enable the GUI texture on the opposite side of the screen from the light source. For example, if your light is on screen and on the left side, enable the right side bokeh effect.

http://docs.unity3d.com/Documentation/ScriptReference/Camera.WorldToScreenPoint.html

Answer 2

Answer by MarkD · Mar 25, 2014 at 05:27 PM

You can create a simple similar looking effect by placing a plane in front of the camera, which contains a texture with desired 'dirt', then you could use a particle shader such as multiply altough that would give a very static effect. There are youtube tutorials how to get better results with this technique.

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light effect like BF3

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