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DarkBASIC Professional Discussion / Transparency with alpha channels?

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Soyuz
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Posted: 4th Jan 2003 19:07
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I have read a range of posts where some say you can use alpha channeled TGA images to add transparency to a texture and some saying you can't.

Anyone know the truth?
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Benjamin
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Posted: 4th Jan 2003 22:41
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If its not possible then that will be another DLL for me to write..

xxxpetratxxx
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mimesis
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Posted: 5th Jan 2003 00:13
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I agree on the DLL

TGA alpha channel is not supported

Layer opacity (pshop) is, in PNG format.
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Soyuz
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Posted: 5th Jan 2003 02:11
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When you say layer opacity do you mean a case of a texture can be faded to transparent as a whole, rather than specific areas of the texture being of varying transparency?

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Benjamin
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Posted: 5th Jan 2003 02:17
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i could do a dll for that...if i can then it will be here at the end of january (i hope)

xxxpetratxxx
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mimesis
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Posted: 5th Jan 2003 02:33
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"When you say layer opacity do you mean a case of a texture can be faded to transparent as a whole, rather than specific areas of the texture being of varying transparency?"

Yep, thats about it.
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Soyuz
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Posted: 5th Jan 2003 14:25
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pants!

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Benjamin
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Posted: 5th Jan 2003 14:58
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I know, U need it now but I need some time because I'm really busy and ive gotta buy another compiler...

xxxpetratxxx
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mimesis
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Posted: 5th Jan 2003 15:36
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Why do u have to buy a new compiler?
Cant u use something like Dev C++ which is free?
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Benjamin
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Posted: 5th Jan 2003 16:20
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no..

xxxpetratxxx
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mimesis
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Posted: 5th Jan 2003 18:10
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why not?
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Benjamin
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Posted: 5th Jan 2003 19:10
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coz i dont use C or C++...

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mimesis
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Posted: 5th Jan 2003 20:06
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So what do u use? ASM?
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Soyuz
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Posted: 5th Jan 2003 20:09
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Well if you did an alpha channel thingy it would be massively hugely immensely appreciated at an unimaginable and practically psychologically insurmountable scale.

So it would be quite welcome

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Benjamin
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Posted: 5th Jan 2003 21:37
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lol. i dont use asm, guess again .I will try this alpha stuff, and if it works, i will add more cool stuff with it

xxxpetratxxx
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mimesis
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Posted: 5th Jan 2003 22:42
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hmmm, if it isnt asm it must be visualbasic ,right?
or even better blitz?
Nah I give up, care less, probably Delphi
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Benjamin
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Posted: 6th Jan 2003 00:31
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no...i would like to not say..

xxxpetratxxx
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Kangaroo2
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Posted: 6th Jan 2003 00:44
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lol at petrat u keep em guessing m8 there's plenty more possibilites

* If the apocalypse comes, email me *
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Soyuz
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Posted: 6th Jan 2003 01:12
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You will be my hero if you got it working. I wrote an email to the DB guys about this topic and no doubt they've had requests for it before.

Fortran?

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Benjamin
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Posted: 6th Jan 2003 13:59
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fortran? you askin' me? what? PLEASSEEE stop guessing, it wont help me coz i come online to read these messages and this SLOOWs my work down!

xxxpetratxxx
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Soyuz
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Posted: 6th Jan 2003 14:18
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Interesting logic!!!

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Benjamin
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Posted: 6th Jan 2003 17:02
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very

xxxpetratxxx
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Soyuz
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Posted: 6th Jan 2003 19:17
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I've just had my attention drawn to "set object transparency" which states that "setting the transparency to one will ensure the object does not draw the transparent color duing final rendering"

It lies! I have tried using PNG,jpg and tga with an area in the image set as black which should in theory become transparent, having set the transparency color to black (which I believe it is by default anyway).

Has anyone seen this working (on a 3D object) as it theoretically sounds like something similar to using alpha channels but without the greyscale range?

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Benjamin
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Posted: 6th Jan 2003 21:43
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not me

xxxpetratxxx
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Kangaroo2
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Posted: 6th Jan 2003 23:41
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Yes this works for me, but only with bitmap images. Plus its slightly innaccurate. On other ppls graphics cards it doesn't work at all. This should hopefully b fixed soon by a patch, it worked perfectly in DB1

* If the apocalypse comes, email me *
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Benjamin
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Posted: 7th Jan 2003 02:09
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I have only got BD classic (good for me)

xxxpetratxxx
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