Particle Texture Problems

I’ve been experiencing this for a while and it doesn’t happen with all textures, but it happens to some. Basically these black lines appear above the texture. I’ve made sure the texture was completely transparent and even cut off some from the top and re-uploaded it, yet the black lines still appear.


(Its really hard to see here but in the first picture there’s black lines above the grass particles)
Im pretty sure its a bug because it just can’t be the texture itself. There’s no black lines anywhere in the texture. Is there a way to fix this? They look really ugly.

Here’s the texture if you want to mess around with it
http://www.roblox.com/grass-item?id=359177731

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If thats an older texture from like 2 years ago, that’s your problem. Back then there was a problem with ROBLOX when they cropped photo that were transparent there would be a 1 pixel thick black line on the edges of the picture.

Its a new decal though I got off of google images

Open the image in a photo editor and shift the entire image up by one pixel, leaving a fully transparent one at the bottom. Should fix it for now.

I thought they fixed this but I guess that’s not the case.

Are you sure it’s not a flaw in the asset itself (eg poor image processing)? Have you tried other transparent decals?

Edit: Did you use a .jpg? I personally don’t trust those, because of ugly compression artifacts like these we see here. Nevermind, .jpg does not support alpha channels.

The workaround for this bug is to put a line with transparent pixels at the bottom edge of the texture.

Basically currently top edge for particles uses some pixels from the bottom edge. We’ll fix it.

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Thanks!