Transparency Issues in cab

Hi all

After a very long hiatus, I got back into development. I've just about nearly finished a cab but when in game, I've noticed issues in particular around the master controller. As can be seen in the below screenshot there is a grey ish border. I assume this is transparency issues but I'm interested to know whether its hardware based or have I not blued out enough?

Any advice appreciated.

Cheers

Off topic, but what kind of cab is that? The radio looks like it's GSM-R radio, though it's an unfamiliar design.

Could it be that you resized it after you added transparency? Maybe you could post the texture here.

I think BVE has always had it, the reason is transparency smoothing "smudging" the edge. Some panels don't have it though, from what I remember solutions are using larger and power-of-2 texture sizes and leaving some transparency around button/lamp/handle textures.

Quork wrote:Off topic, but what kind of cab is that? The radio looks like it's GSM-R radio, though it's an unfamiliar design.

Could it be that you resized it after you added transparency? Maybe you could post the texture here.

Its a cab on the new Waratah Series 2 B set here in Sydney, Aus. The radio is the new Digital Train Radio System by funkwerk.

I'll try and blue out a bit more and see what happens.

Ah! Then it's indeed GSM-R =)

The phenomon you're probably seeing is this:

A repeating texture (Especially noticable with one using transparency) will 'bleed' on the edges.
Note that the pixels from each edge blend with the ones from the opposite edge at the seam.

What you want to do is to make a border around your control entirely of a single color (Probably transparent).

n.b. I can't see anything in your picture, we really need the whole thing to see what's going on.....

Left side, lower third, Chris

Quork wrote:Left side, lower third, Chris

I can see the master controller, but not the artifacts

There's a horizontal line at about the height of the lower left corner of the left display.

It could be any of the two. If you want, send me the texture to my email and I will check it.

Thinking about it, it could also be a messed up layering if the cab is a 2D one. Hope I have made it clearer.

Quork wrote:There's a horizontal line at about the height of the lower left corner of the left display.

Ah, thought that was the panel join....
This is why yhe whole thing is so much more helpful though

If that is what the OP means, it's definitely the bottom of the texture bleeding through I'd say.
All it wants is for the final row of pixels in each frame of the texture to be replaced with transparent- I'd guess thry aren't at the minute.

The power of 2 rule is less likely to be causing this, and a colotlr pallete isdie is also IMHO unlikely, but again to rule them out, we need the whole thing!

Yes most likely the texture or textures are not to the power of two.

All should be.

If it's a animated one do all the separate images to the power of two and the whole thing to it as well. 

I would avoid transparent parts to them.

They also make lines.

As Ringo Starr says "PS please forgive the lateness of my reply"

The textures are to the power of 2. The brake controller is 512X4096 and the power controller is 512x2048. What is even stranger is that my tester cannot detect it on their machine. Hmmmmm

My main cab image however is not to the power of 2. Could this be a possible cause?

theflyingoreo wrote:As Ringo Starr says "PS please forgive the lateness of my reply"

The textures are to the power of 2. The brake controller is 512X4096 and the power controller is 512x2048. What is even stranger is that my tester cannot detect it on their machine. Hmmmmm

My main cab image however is not to the power of 2. Could this be a possible cause?

No

It'll be because different drivers handle edge blending marginally differently.

Increasing the AF setting will also make the seam more noticable, as the driver will deliberately attempt to blend the pixels at the edge of the texture.


Excessive layering may also not help; check that the two are on as close layers as possible.