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Reply To: Ambient Occlussion doesn’t produce the same effect

Forum Archive › Ambient Occlussion doesn’t produce the same effect › Reply To: Ambient Occlussion doesn’t produce the same effect

March 29, 2023 at 9:15 am #69779
Martin Bergwerf
Participant

    Hi Roxana @ox ,

    No need to be sorry! I’ll try to explain; first take a look at the output of the Musgrave with 1.18 added to it:

    Clamping_1.png

    The AO Node, after it’s been piped through the clamped Map Range Node gives values between 0 (much occlusion) and 1 (no occlusion) and these values are being subtracted from above result. When you subtrat 0 nothing changes and when you subtract 1, it shifts down like this:

    Clamping_2.png

    And clamping the Subtract Node gives:

    Clamping_3.png

    If we clamp the Add Node we get (before subtracting the AO):

    Clamping_4.png

    If we now subtract 0 nothing happens and when we subtract 1 (no AO), we get:

    Clamping_5.png

    and then clamping the Subtract Node:

    Clamping_6.png

    Here’s the file, so you can play with the different values and see what the result is:

    https://drive.google.com/file/d/1Zcgbzk0WqFW7B8nPLYWpedWqphxEvFz8/view?usp=sharing

    I hope this helps.