Need help to make transparent parts of textures

Discussion in 'Track Modding' started by trollray, Aug 6, 2021.

  1. trollray

    trollray Registered

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    Hi all.
    I've searh on this forum but no luck since now.
    Here is my problem:
    I'm converting a track to use pbr shaders, but when i have some textures (foliage and a barrier for example ) with transparent parts it goes black when passing in ibl shader (Normal or vegetation, nothing work)
    Th estrange thing is that, when i use json and revert back to original shader, my texture still show the transparent parts in black.
    The only solution is to delete the json in fact.

    - What's not working?
    - How to make it to work?

    Many thanks in advance for any help given. ;)

    (ps :I only use 3dsimed, gimp and substance designer )
    Cheers
     
  2. trollray

    trollray Registered

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    No answer? maybe it's my post that is transparent lol ;)
     
  3. redapg

    redapg Registered

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    If you upload a Mesh with that it happens, with all used Textures and the JSON File with that the Transparency gets lost and send me the Link by a private Conversation, i can take a Look at it.
     
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  4. TTM

    TTM Registered

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    Hopefully this helps. Alex mentioned this on discord....

    Check from material json that albedo map has a texture flag of "CUBETF_CHROMAKEY". If not, just manually add it.

    ...
    "refName":"",
    "shader":"L2IBLSTANDARD",
    "sortOffset":0,
    "srcBlend":"CUBEAB_ONE",
    "textures":[
    {
    "AnisoLevel":0,
    "ChromaColor":0,
    "Flags":[
    "CUBETF_AUTOMIPMAP",
    "CUBETF_TRILINEAR",
    "CUBETF_CHROMAKEY",
    "CUBETF_OWNEDBYMATERIAL",
    "CUBETF_NOZBUFFERREQUIRED"
    ...
     
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  5. trollray

    trollray Registered

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    Hey, @redapg and @TTM ,so many thanks for the help.

    The solution from TTM is working!!
    I still don't understand how Alex found this and how it works, for me it's far out of my capabilities but it's working now. Thanks so much. ;)
    Cheers
     
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  6. TTM

    TTM Registered

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    It seems that sometimes material editor not save all necessary information to material json file. I also had same transparency problem with tree material, but luckily Alex wrote about this on discord when someone else had same problem.
     
    Last edited: Aug 9, 2021
  7. redapg

    redapg Registered

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    I can confirm that.
    A longer While ago, i did have the same Problem with a Video Screen Material, where the deciding Entries/Values, to get it working, were not saved into the JSON File, when the Web-Browser Material Editor was used.
    Such Things should be fixed immediately, but unfortunately still exist as it seems.
     
  8. Alex Sawczuk

    Alex Sawczuk Registered Staff Member

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    If you have problems saving transparency for now you just need to save the settings manually by editing the json file when you do not have the track loaded.

    You can enable Alpha Test by adding "CUBETF_CHROMAKEY" flag to the albedo texture.

    You can enable Alpha Blend by setting
    "dstBlend":"CUBEAB_INVSRCALPHA"
    "srcBlend":"CUBEAB_SRCALPHA"
    and adding "CUBEMAT_ALPHACHANNEL" to the Material Flags

    I've attached examples.

    I know it should be possible to set it in the editor, but it's not right now, sorry.
     

    Attached Files:

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  9. Alex Sawczuk

    Alex Sawczuk Registered Staff Member

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    TTM, Mitch9 and Corti like this.

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