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Thursday, April 12, 2012

UDK Cross Processing Post Process

Another post process shader for the UDK, again inspired by photographs, this time Cross Processing. The performance impact is roughly 10%-11% - tested on a low end GT520 gfx card.




















The effect is characterized by a strong contrast, color teint, image grain and darkened edges/borders.



Material setup:

at

4 comments:

  1. dan fisherJuly 10, 2012 at 3:21 PM

    Looks nice!! Any chance you'll upload the material editor setup?

    ReplyDelete
  2. Oliver M-HJuly 13, 2012 at 11:58 PM

    Sure, I've just added a material screenshot.
    The texture does hold 2 greyscale textures, one for the image grain (red channel) and another one for darkening the corners/edges.
    The color teint can be controlled by using different power exponent values for each color channel.

    greetings

    ReplyDelete
  3. LorenzOctober 31, 2012 at 5:55 PM

    Where you got those two texture sample ?

    ReplyDelete
  4. Oliver M-HOctober 31, 2012 at 11:11 PM

    Hi, the screenshot is pretty much outdated - I've just added a new one.
    What you need is a low res noise texture (e.g. 64x64 or 128x128) that's beeing tiled multiple times. One of those comes with the UDK stock content (EngineMaterials package). For the vignette effect I suggest to create a gradient inside the material editor (like shown on the new screenie) to avoid compression or banding artifacts.

    ReplyDelete