AuthorTopic: GraphicsGale alpha channels  (Read 19932 times)

Offline Figbash

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GraphicsGale alpha channels

on: October 22, 2008, 06:37:23 pm
Hi, I'm new to Pixelation.  But I lurk a lot.  ;D

I'm at the end of my rope trying to find a program less annoying than photoshop for exporting tile animation sheets on a game I'm working on.  I've been using GraphicsGale which I like, but I can't figure out alpha channels for the life of me.
Can anyone that knows how to do Alpha give me step by step?  I'm trying to export a PNG with a completely transparent background, or a 32-bit TGA with an alpha channel.  Thanks!

Offline Conzeit

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Re: GraphicsGale alpha channels

Reply #1 on: October 28, 2008, 06:12:43 am
I dont think it supports alpha, sorry!

Offline Atnas

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Re: GraphicsGale alpha channels

Reply #2 on: October 28, 2008, 09:37:33 pm
If you just want one color to be transparent go to frame, frame properties, check transparent, and colorpick the background.

I haven't figured out the antialiased alpha masks though, because I've never had use for them. It's in the help file, though.
Quote
Add Alpha Channel
Sets a opaque alpha channel to a current layer.


Make Alpha Channel
Sets an alpha channel to a current layer. Alpha channel is a mask which is made by alpha blend values of each pixel.
Create From - Choose a method of creating a mask from Current Selection, Opaque Colors(using a transparent color of a layer when Current Layer Only is checked, using a transparent color of a frame for the rest), and Luminance.
Source - Select a image which is used as a source of mask.
Antialias - A mask is created using anti-aliasing.
Invert - Inverts a alpha blend value.



Delete Alpha Channel
Deletes a alpha channel of current layer.


Invert Alpha Channel
Inverts a alpha channel of current layer.


Duplicate Alpha Channel
Duplicates a alpha channel of current layer as a new image. In order to return to the original condition, set the new image as an alpha channel by Luminance


Offline Ericard Production

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Re: GraphicsGale alpha channels

Reply #3 on: September 03, 2009, 10:19:34 am
It was very easy, just go to "edit", then "copy display image". And open another gif files and just "paste layer". Makesure the color must be picked for transparent. ;D

By the way, I am not worries with Alpha Channels. Basic way is easy...

Offline Emtch

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Re: GraphicsGale alpha channels

Reply #4 on: September 03, 2009, 05:16:35 pm
The easy way is to just make a layer with a transparent background by layer properties, much easier.

Offline Gil

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Re: GraphicsGale alpha channels

Reply #5 on: September 03, 2009, 10:15:11 pm
Erm, the guy is asking for alpha transparency, not 1 bit transparency Emtch and Ericard Production. There's a huge difference.

GraphicsGale supports alpha transparency masks, but is, as far as I know, not able to save alpha transparency to a file format. You'll have to use another program to do that.

Offline Atnas

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Re: GraphicsGale alpha channels

Reply #6 on: September 04, 2009, 01:32:07 am
You can save alpha transparency to png!

the circled slider controls the transparency level of the drawn color in images with an alpha channel

necro

Offline NaiiChai

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Re: GraphicsGale alpha channels

Reply #7 on: November 03, 2009, 12:02:12 am
dunno if you figured it out yet
its really annoying and I hope i have the right instructions xP

What i do is set the frame to transparency, and then for extra measure, make a new frame --> set to transparency
and then save as .png or .gif
usually it works.
if it doens't i cry >:
xP

good luck (=