Celestia Forums

Hi. I am haivng a problem with saturn. I guess this the first time I seen it.

there is a ring texture that is on top of saturn. here is the image of the bug below

& here are my specs

Processor
(2)Intel Pentium 4, 2800 MHz
200MHz external bus

BIOS
Intel Corp. BF86510A.15A.0045.P08.0309261344 09/26/2003

Memory
512MB physical
90% free resources
4 memory slots, 2 free (256+0+256+0)

Video
Graphics Adapter: NVIDIA GeForce FX 5200
Screen Area/Colors: 1024x768 pixels, 16 million colors
Monitor: Gateway EV700B

Drives
C:\ (NTFS) 114470MB total, 86041MB free
D:\ CD-ROM/CD-RW or DVD Drive
E:\ CD-ROM/CD-RW or DVD Drive
F:\ (NTFS) 114470MB total, 114362MB free

Network and Modem
(net) Intel Intel PRO/100 VE Network Connection
(net) Microsoft Direct Parallel
(modem) Intel Intel 537EP Data Fax Modem

Operating System
Windows XP SP1 (Windows XP 5.1.2600 Service Pack 1)
Original setup date: 2/29/2004
DirectX Version: 5.3.0000000.900 built by: DIRECTX
Swap file managed by Windows
File cache managed by Windows

Browser
MSIE 6.0; 5.1; .NET CLR 1.1.4322
Proxy: No proxy set
HTTP level: direct 1.1, proxy 1.0
Scripting version: 5.6.0.6626

please reply

Zack


Edit: I checked some render options & it appears to be affected by ring shadows

That's the shadow of the rings. You're seeing them as a circle because you have ambient light turned on, and the ring shadows appear to project through Saturn to its nightside - turn off ambient, and everything will look normal.

Grant

It is the ring shadow

I think the problem is that you're viewing Saturn with high ambient lighting, which illuminates the dark side. Ordinarily, you can't see the darkside, and of course the rings shouldn't be casting a shadow on the dark side anyway. I guess the renderer just assumes the shadows go all the way round, in which case that is a bug, I guess.

But it looks fine when you turn off the ambient light, anyway.

It does look kinda cool if you lock the view to Saturn in the position of the image above and then fast-forward time though, the shadow does some really funky things as it moves

well I checked the forums & its actually a serious artifact. Chris has endountered this & he said that its a render issue. he will fix it in the next pre version

jgrillo2002 wrote:well I checked the forums & its actually a serious artifact. Chris has endountered this & he said that its a render issue. he will fix it in the next pre version

Just to be clear:
The ring shadows themselves are not the bug; that they're visible on the side opposite the sun is the problem. The dark ring shadows do look strange even without ambient light, but I think they're correct--it's just that such a view of Saturn is unfamiliar to us.

--Chris

I whish I had this bug too... I cant even see the ring shadows in the planet