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New texture loading bug
Posted: 18.05.2007, 02:55
by Cham
I've identified a new issue with texture rendering. It's occuring since less than a week with my builds from CVS. Each time I restart Celestia, the Earth is having some textures problems as shown below. The problem seems to go away if I move a bit around Earth, so it's not a permanent problem under a single session. The shape of the "wrong patch" is variable with each launch and appears to be correlated with Earth's rotation relative to the date and time.
I'm also experiencing a similar problem with Jupiter, which is showing some patches full of stars, the first time I see the planet after each Celestia restart. As soon as I move around, the problem disappears. This problem seems to be related to the texture loading.
I'm using a 4k PNG texture for the Earth and a 4k DDS texture for Jupiter. Both are using a cloud layer. I can't tell if this is related to the problem.
Anyone able to confirm this ?
Posted: 18.05.2007, 03:03
by Cham
Here's what I get if I restart Celestia without the cloud layer enabled :
Posted: 18.05.2007, 03:14
by Cham
I just tested the problem with other rendering paths. It doesn't happens under the old standard OpenGL path. The bug only occurs when I use the OGL2 path. It's occuring even without the cloud layer activated. Like I said in my first post above, the problem disappears as soon as I move a bit around the planet (Earth or Jupiter).
Posted: 18.05.2007, 03:20
by tech2000
Cham:
Excuse my bad sence of humor... but it looks like earth just smiles at you.
Bye, Anders.
Posted: 18.05.2007, 03:42
by Johaen
tech2000 wrote:Cham:
Excuse my bad sence of humor... but it looks like earth just smiles at you.
Bye, Anders.
ftw!
lol.
Posted: 18.05.2007, 12:04
by Darkmiss
Johaen wrote:ftw!
American slang for somthing ?
Posted: 18.05.2007, 12:30
by tech2000
Darkmiss wrote:Johaen wrote:ftw!
American slang for somthing ?
F**k The World
Regards, Anders
Posted: 18.05.2007, 12:53
by dirkpitt
Posted: 18.05.2007, 13:09
by ElChristou
tech2000 wrote:Excuse my bad sence of humor... but it looks like earth just smiles at you.
Posted: 18.05.2007, 14:07
by Johaen
tech2000 wrote:Darkmiss wrote:Johaen wrote:ftw!
American slang for somthing ?
F**k The World
Regards, Anders
ftw = For the win. lol.
http://en.wikipedia.org/wiki/List_of_Internet_slang_phrases#F
Posted: 18.05.2007, 15:16
by dirkpitt
Laughing aside, I can't duplicate this issue (with, or without virtual textures, DDS, PNG etc). Actually, to me it looks more like a geometry clipping or depth-related problem because you can see through Jupiter.
Mobility Radeon 9700, 64MB
Posted: 21.05.2007, 15:00
by Darkmiss
For the win! huh... okay, and thats further American slang for somthing?
That picture is for the win... hmm! still don't get it
Posted: 21.05.2007, 15:59
by Johaen
Darkmiss wrote:For the win! huh... okay, and thats further American slang for somthing?
That picture is for the win... hmm! still don't get it
It means it's good. It's awesome. It wins.
It's more internet slang than american slang. You normally wouldn't speak it unless you're actually making a joke about internet slang.
Posted: 21.05.2007, 16:54
by Cham
Guys, thus is all OFF TOPIC ! Stay on the topic please !
Posted: 24.05.2007, 03:37
by dirkpitt
Ok, from what I've heard from Cham directly, this is related to the use of VBO on planets. VBO is disabled by default for planets, but I was enabling it for some of my recent unofficial builds and it seems to behave badly on Cham's graphic card (x800?) It's not certain yet whether this is a graphic driver bug or not, but I won't be reenabling the planet VBO feature anytime soon.
