[BETA] Transparent PNGs displaying dark borders *on device* post 0.9.2 upgrade.

cocos2d for iPhone » Programming » cocos2d support (graphics engine)

[BETA] Transparent PNGs displaying dark borders on device post 0.9.2 upgrade.

(18 posts) (6 voices)

Started 2 years ago by danwar
Latest reply from Dan

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danwar
Member

Hiya chaps,

Looking for a little guidance on a Beta issue I'm seeing. Wondered whether it's a known bug or a change I've missed.

I'm aware that in previous versions of Cocos the dark borders are PNGs with alpha displayed dark borders in the Simulator. On the device the PNGs rendered fine.

Since upgrading to 0.9.2 (my first jump to 0.9.+, I didn't try .0 and .1) the dark borders are present on the device as well as in the simulator.

I'd appreciate any suggestions on resolving this; I've checked the change logs and there is mention of making the simulator and device display and handle PNGs in the same way, which they now do for me, just not in the way I'd like :).

Two screenshots below; the first from 0.8.+ and the second from a build of the game using 0.9.2. You'll notice the dark borders around the rings, amongst other things.

Cheers for reading,
d.

Posted 2 years ago #
tutukun
Member

err i cant see different at all
pls elaborate

Posted 2 years ago #
Alex
Member

I do see a difference when you look closely at the boxes corners.
See the ring around CONFER, the square corners have an extra border of 1 black pixel, compared to the similar square corners of rings in the previous images.

Posted 2 years ago #
danwar
Member

@tutukun Alex has pretty much summed it up (thanks Alex); it's the dark/grey borders around the rings, boxes... etc.

I think i'll put together two simple test apps tonight, one 0.8+ and one 0.0.2 and take it from there, as I gather people aren't experiencing the same problem.

Cheers,
d.

Posted 2 years ago #
riq
Key Master

@danwar: what version are you using ? v0.9.2 is not released yet. Are you using v0.8.2 ?

Are you changing the blending function of your sprites ?

Posted 2 years ago #
danwar
Member

@riq Ahh, apologies, this serves me right for posting new threads when half asleep. I'm using the 0.9.0-beta2, and NOT 0.9.2 as i've been calling it :)

And no, i'm not changing the blending modes. Infact Sprites that I am blending render fine.

So to confirm I'm seeing the dark edge artefacts that we usually see in the simulator on the device now that I've upgraded to 0.9.0-beta2.

Posted 2 years ago #
riq
Key Master

And do you see the dark edge on PHotoshop / GIMP too ?

Posted 2 years ago #
danwar
Member

@riq No, in Photoshop and GIMP it renders fine without the dark edges.

Posted 2 years ago #
riq
Key Master

I don't understand why :-(...
Could you create an issue on the issue tracker attaching;
- the .png image that you are using
- the code that you are using to load the image
?

Thanks.

Posted 2 years ago #
danwar
Member

Sure riq, i'll spend a little time later tonight and try to knock together a quick example project, i'd kinda like to see if I can consistently recreate the problem.

Posted 2 years ago #
crmagicxxx
Member

Maybe this will help someone... I used same sprite image and if I add it on sheet it renders perfectly but if I add same image directly on layer/scene it has black borders... Latest svn used

Posted 2 years ago #
danwar
Member

Just got around to this; issue raised: http://code.google.com/p/cocos2d-iphone/issues/detail?id=728

Posted 2 years ago #
Dan
Member

I'm getting the same thing here, from the latest svn as of last friday or so. Any updates?

Posted 2 years ago #
danwar
Member

Well i'm glad it's not just me :)

I've not spent anymore time looking into this dwyszyns, but plan to have another fish around soon.

It's probably worth pointing out that i've upgraded to 3.2 and the problem still exists, even in the iPad simulator.

Posted 2 years ago #
Dan
Member

Yeah, I'm not so concerned with the simulator, but the device thing really screws me up. I've looked at this thing for hours yesterday, trying different methods of saving the images through Photoshop, GIMP, OSX's Preview, and loading them up with different pixel formats, etc. but no go.

Posted 2 years ago #
crmagicxxx
Member
I am sure it's some bug, but until it's fixed why don't you set blend for your sprites manually?
```
mySprite.blendFunc = (ccBlendFunc){GL_ONE, GL_ONE_MINUS_SRC_ALPHA}
```
Posted 2 years ago #
riq
Key Master

@crmagicxxx: yes, that was the bug. Sprites were created with the wrong blend function.

Please update to SVN r1761, or use v0.99.0rc + this file:
http://cocos2d-iphone.googlecode.com/svn-history/r1761/trunk/cocos2d/CCSprite.m

Posted 2 years ago #
Dan
Member

Woot! That was it. Thanks guys, much appreciated!

Riq, great work, as always.

Posted 2 years ago #

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