Foliage outlines.

[Kazuki_Fuse]

I was just wondering why in computer games when you see like an animated sprite, eg grass foliage, half the time the Sprite has like a white outline around it? Is it just me or does anyone else notice it? It's not in all games, but I see it more often than not. I sure hope that if HL2 has animated foliage, it has a was of getting rid of that outline, cause it really looks pretty crappy. I noticed in FarCry for example, at least on the highest settings that it wasn't really visible. I guess what I'm asking is does anyone know why that happens? It seems to occur more on hard edged sprites. I know it sounds stoopid, I'm just curious.

 

[Sparta]

Its to do with the alpha texture the sprite uses. Could happen in any game

 

[poseyjmac]

i see it in vice city too

 

[wonkers]

I believe the term for it is lazyness. Pac man didn't have anything wrong with it.

 

[SubKamran]

And why aren't they AA'd?

 

[Never{was}Clever]

The sprite doesn't have alpha blending. IE: Transparent edges. So you see the full green color of the leaf right to the tip.

 

[FictiousWill]

Poor alpha color keying, as Sparta said.

 

[Geno]

They were REALLY bad in ghost recon
*horrible memories*

 

[Dalamari]

The graphics in total were bad in GR.

 

[BloodyMario]

It's probably due to texture compression. The alpha channel (which acts as the visibility mask for the sprite) gets screwed up and some pixels get through that were not supposed to.

 

[luketabor]

yeah, i experienced that problem when i was making textures for a custom Soldat map i was making. the compression would make the pure green bleed into the other colors of the texture. i ended up having to pixel-by-pixel reedit all the textures i made.

 

[ZombieBudgie]

They were REALLY bad in ghost recon
*horrible memories*

:frown: Don't remind me.