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Thread: Ethereal Flame effect look different (buggy) in a bunch of colors

  1. #1
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    Angry Ethereal Flame effect has been buggy in a bunch of colors for two years

    Hi, Dota2 Dev

    The Ethereal Flame effect has been one of the best effects ever produced. However, a patch between Jun 2018 and August 2018 made the flame effect much much less apparent/visible in a bunch of colors. In other words, quite a few colors especially those with smaller RGB values have much smaller flames than before (Some of them become even invisible). Besides, seems like there are multiple other issues with the current Ethereal Flame particle effect as well, so I just listed what I found below:



    -----Update: Dived deep into the bug------


    I know this may not even be close to the actual Ethereal Flame particle effect rendering mechanism but it is a theory.

    So seems like the Ethereal Flame is a stack of different particle layers, take color orange for example [208,119,51]

    Old Ethereal Flame Effect: Every particle layer is rendered as 208,119,51, so the final color is orange

    Bugged Ethereal Flame Effect: Particle layers are rendered unevenly: the very bottom particle layer is rendered as Orange, where as the rest of the upper layers are rendered redish, which could be the max of 208, 119, 51. So 208, 119, 51 becomes 208,0,0 Assume there are 3 layers, [208,119,51] X 3 >> [208,119,51] + [208,0,0] x 2. So the final color is red-orange. (Again this may not be close to the true rendering mech but this is what currently showing in game)




    The layer around the courier's feet is rendered as Orange whereas the layer around courier's neck is rendered as Red




    The effect is eventually rendered as a mixed up of Red-Orange



    Every particle layer should be rendered the same. Please take a look and fix it!
    Last edited by Sean99556; 07-20-2020 at 10:54 PM.

  2. #2
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    -----Issue 1. Particle Effect became weaker/invisible (worsen/damping a lot of legacy colors)------

    Basically a lot of colors on this site are affected negatively https://d2prism.herokuapp.com/database

    [Color: 114, 28, 97]

    Current Bugged EF effect: https://steamuserimages-a.akamaihd.n...E39456BFD2153/


    Original EF effect: https://steamuserimages-a.akamaihd.n...F2449B59EFBEB/












    [Color: 92,132,130]

    Current Bugged EF effect: https://imgur.com/a/fDdUuR7


    Original EF effect: https://imgur.com/a/3OPpJ92












    [Color: 131,135,84]

    Current Bugged EF effect: https://imgur.com/a/0SUgOYw


    Original EF effect: https://imgur.com/a/KwfpXGv








    [Color: 95,161,171]

    Current Bugged EF effect: https://imgur.com/a/30bNl6w


    Original EF effect: https://imgur.com/a/UWHotaN







    -----Issue 2 Colors became indistinguishable (Correlated to Issue3)-----

    With the current Ethereal Flame effect, you almost can't tell the difference between certain colors, for example:

    Example 1
    Current Ethereal Flame effect in Reflections's Shade https://imgur.com/a/seSJWYY [255,60,40]


    Current Ethereal Flame effect in Pyroclastic Flow https://imgur.com/a/R2JKA3f [255,120,50]


    Example 2
    Current Ethereal Flame effect in Dungeon's Doom https://imgur.com/a/5jZ8xrL [123,104,238]


    Current Ethereal Flame effect in Purple https://imgur.com/a/MFOdJhl [130,50,237]



    Colors like these use to be different a lot, please see examples below

    Old Ethereal Flame effect in Dungeon's Doomhttps://imgur.com/a/nL9A9qH [123,104,238]


    Old Ethereal Flame effect in Purplehttps://imgur.com/a/vKWaFoH [130,50,237]
    Last edited by Sean99556; 07-20-2020 at 10:48 PM.

  3. #3
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    -----Issue 3 Inaccurate rendering for certain colors-----

    Example 1 Gold:

    Current Ethereal Flame effect in Gold: https://imgur.com/a/x0O10dx [207,171,49]


    Old Ethereal Flame effect in Gold: https://imgur.com/a/31fPSOE [207,171,49]





    Example 2 Orange:

    Current Ethereal Flame effect in Orange: https://imgur.com/a/TZ8lrtd [208,119,51]


    Old Ethereal Flame effect in Orange: https://imgur.com/a/zxEoP7h [208,119,51]





    Example 3 [159,170,240]:

    Current Ethereal Flame effect in legacy color: https://imgur.com/a/1tZpF0U [159,170,240]


    Old Ethereal Flame effect in legacy color: https://imgur.com/a/SzLALd1 [159,170,240]







    Example 6 Legacy [145,115,244]:

    Current Ethereal Flame effect in legacy color: https://imgur.com/a/iGECcri [145,115,244]


    Old Ethereal Flame effect in legacy color: https://imgur.com/a/udMEKaa [145,115,244]



    Example 7 Legacy [219,127,144]:

    Current Ethereal Flame effect in legacy color: https://imgur.com/a/3qGTjKf [219,127,144]


    Old Ethereal Flame effect in legacy color: https://imgur.com/a/vQxH3CA [219,127,144]




    Example 8 Legacy [240,153,188]:

    Old Ethereal Flame effect in legacy color : https://imgur.com/a/sKYOemU [240,153,188]


    Current Ethereal Flame effect in legacy color: https://imgur.com/a/I5UtYIo 240,153,188]




    You can clearly see that the old effect rendered much more accurate and so much better
    The inner layer of flame looks much brighter in old effect
    Last edited by Sean99556; 07-20-2020 at 10:49 PM.

  4. #4
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    In memory of the old Ethereal Flame effect, RIP


    source: xcharg

    Can we please roll/revert back to what it was? Source 2 engine is supposed to be rendering much better not worse
    Last edited by Sean99556; 06-18-2020 at 12:36 AM.

  5. #5
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    Slightly edited thread title as requested by OP.

  6. #6
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    Thank you so much for the help! Really appreciate it, Chair!

  7. #7
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    please fix the issue devs :'(

  8. #8
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    Status update:

    2 months since this thread was created

    2 years since this issue was identified (Jun 2018 - Aug 2018)
    Last edited by Sean99556; 07-19-2020 at 06:24 PM. Reason: Monthly update

  9. #9
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    Monthly Bump!

  10. #10
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    Updated the possible root cause for this bugged rendering, please fix it!
    Last edited by Sean99556; 07-15-2020 at 07:27 PM.

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