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Alpha IFL .tga sequence - Printable Version

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Alpha IFL .tga sequence - tim@wangsoderstrom.com - 03-30-2022

v1.004
Alpha channel from a still .tga (straight) works as expected in the tyBitmap but if I import as sequence (and IFL is created) the alpha stops working.
I prefer how the parameters settings is layed out in the tyBitmap compared to the vraybitmap or the original max one. 

/Tim


RE: Alpha IFL .tga sequence - tyFlow - 03-30-2022

Interesting...I'll look into that. Might be a max limitation when using IFLs since tyBitmap changes very little code from the original Bitmap source.


RE: Alpha IFL .tga sequence - tim@wangsoderstrom.com - 04-01-2022

It works in vraybitmap, but in turn vraybitmap gives very poor opacity preview in the viewport (where tyBitmap worked as expected)
Now a days I naturally choose the tyVersion of things where they are available  Big Grin
Tell me if you want the scene.

Have a nice weekend.


RE: Alpha IFL .tga sequence - tyFlow - 04-04-2022

Hmm, tried testing this with a simple TGA sequence with alpha....alpha still comes through when converted to IFL.

Can you post your TGA sequence? Or send to support@tyflow.com if you don't want to post it publicly.


RE: Alpha IFL .tga sequence - tim@wangsoderstrom.com - 04-04-2022

Made a new scene to reproduce what I mean, I think it is selfexplainatory.
Download here including images: https://www.dropbox.com/sh/dt95xg1l99ntem1/AACLAMb-uYH1-MXVnoH8dQhca?dl=0

Let me know if I can do anything else to help.


RE: Alpha IFL .tga sequence - tyFlow - 04-05-2022

Hmm, yea I guess I'm not understanding what the issue is.

I opened the file you uploaded in Max 2022. I placed a sphere behind the planes and added a VRay Light.

Here is the viewport preview and the render, with nothing else changed. Transparency on both seems to be coming through fine....


RE: Alpha IFL .tga sequence - tim@wangsoderstrom.com - 04-05-2022

That is wierd (or what is happening on my rig is probably what is wierd)
I'll let you know if I realise what is happening locally.

attached render of exactly the same file I sent you. Sphere behind it and Vray light:


RE: Alpha IFL .tga sequence - tyFlow - 04-05-2022

What version of Max are you using?

Could you try a different file format (tif/exr/png) and see if you get the same result?


RE: Alpha IFL .tga sequence - tim@wangsoderstrom.com - 04-06-2022

Max 2022

Well, the opera singer seems to be an anomaly. Made a new test, see attached.
Only thing I can think of now is that the locally failing TGA sequence was exported with a different start frame nr than 0?
I have no idea what makes sense.


RE: Alpha IFL .tga sequence - tyFlow - 04-06-2022

Hmm, yea that's very strange and especially tough to debug since I can't repro it here....

Seems like the alpha is coming through ok on non-TGA formats, on your machine though?


RE: Alpha IFL .tga sequence - tim@wangsoderstrom.com - 04-06-2022

(04-06-2022, 02:17 PM)tyFlow Wrote: Hmm, yea that's very strange and especially tough to debug since I can't repro it here....

Seems like the alpha is coming through ok on non-TGA formats, on your machine though

Yes and it works best with tyBitmap.
It is something with that specific TGA sequence from that specific After Effect export. So you should forget about this.


RE: Alpha IFL .tga sequence - tyFlow - 04-06-2022

Ok, well if you manage to figure things out further let me know. At least you have a workaround!