topic Re: lightworks - alpha channel issue in Visualization

lightworks - alpha channel issue

Anonymous — Thu, 11 May 2023 11:46:00 GMT

having some issues with rendering a library part with an image map (incl alpha channel)

as you can see from the attached... the alpha appears to be working.... but for some reason i cannot seem to get rid of the grey-ish translucent-ish background

any help would be greatly appreciated

this has been rendered in archiCAD (lightworks)

the alpha channel etc seems to work ok using the internal rendering engine

thanks in advance

Re: lightworks - alpha channel issue

Dwight — Fri, 20 May 2005 16:56:58 GMT

what rendering quality and antialias level are you using?

Re: lightworks - alpha channel issue

Anonymous — Fri, 20 May 2005 17:02:15 GMT

dwight

thanks for the quick response

i believe that both are set at max

any thoughts?

thanks again in advance

Re: lightworks - alpha channel issue

Dwight — Fri, 20 May 2005 17:44:25 GMT

here's my experience with the lioness image - no problem.

Re: lightworks - alpha channel issue

Anonymous — Fri, 20 May 2005 17:49:54 GMT

dwight

weird... all looks great with your rendering

is it possible to copy and paste the gdl from the object that you have used (or attach it so that i can download).... that way i can check it against what i have.... maybe i have screwed something up (though there is not much to screw up here i would have thought)

thanks again for all

Re: lightworks - alpha channel issue

Dwight — Fri, 20 May 2005 17:56:40 GMT

ParaPicture.gsm

Re: lightworks - alpha channel issue

Anonymous — Fri, 20 May 2005 18:00:04 GMT

dwight

wow.... you don't muck about

thanks very much for dealing with this so expeditiously

i will give this a run and report back

thanks again

Re: lightworks - alpha channel issue

Dwight — Fri, 20 May 2005 18:01:48 GMT

ask a busy man. everything is at his smoking fingertips as they stroke melting keys.

Re: lightworks - alpha channel issue

Anonymous — Fri, 20 May 2005 18:12:27 GMT

smokin' you are

loaded the library part... re-rendered.... NO issues

i checked thru my script and yours... identical (where it matters).....very weird

i guess it is just one of those things

thaks again for all your help on this

i am off to populate my space with lots of "pictures"... with lovely... working alpha channels

Re: lightworks - alpha channel issue

Anonymous — Tue, 24 May 2005 09:09:59 GMT

GDL Picture no generate shadow

czech GDL object generate shadow and rotate to camera (rebuild 3D)

Re: lightworks - alpha channel issue

Dwight — Tue, 24 May 2005 09:13:10 GMT

Have you compared the code?
Perhaps Czech is a superior GDL language.

Re: lightworks - alpha channel issue

Anonymous — Tue, 24 May 2005 09:58:19 GMT

lubosC + dwight

thanks again for all your help on this one.... it appears to be working correctly now..... even though there appears to be no real discernable difference with the code of all 3 objects... at least in the masking etc that may have affected the renderings

on another note.... it would appear that if a small piece of the image that has an alpha channel touches an edge of the picture plane (say the bottom edge)... then it seems to wrap to the top and create a small dirty fragment up there (see attached image)

any thoughts on this (apart from leaving a 1 pixel gap at the bottom of the image to be used)

thanks again for all