two eclipse shadow bugs
Posted: 16.01.2003, 02:39
While admiring Don Edwards' volcanic moon this evening, I noticed two bugs in the eclipse shadow rendering that I don't think have been mentioned before.
[url=http://www.lns.cornell.edu/~seb/celestia/vme1.jpg]
[/url]
(this links to a higher resolution image)
1) the edges of the shadow are saw-toothed
The planet casting its shadow onto the moon happens to be Mars as shipped with Celestia v1.2.5, not a 3ds object with a jagged limb.
2) when the shadow is cast on a night-light texture (on the day-lit side of the planet), the lights are dimmed instead of becoming brighter.
Note the glowing region in the lower right center which becomes dark in the shadowed area.
System specifics:
256MB, 500MHz P3, Windows XP Pro, SP1
128MB Nvidia GF4 Ti4200, Detonator 40.72 drivers
Celestia v1.2.5
Don Edwards' http://63.224.48.65/~impulse/Volcanic%20Moon.zip
[url=http://www.lns.cornell.edu/~seb/celestia/vme1.jpg]
[/url]
(this links to a higher resolution image)
1) the edges of the shadow are saw-toothed
The planet casting its shadow onto the moon happens to be Mars as shipped with Celestia v1.2.5, not a 3ds object with a jagged limb.
2) when the shadow is cast on a night-light texture (on the day-lit side of the planet), the lights are dimmed instead of becoming brighter.
Note the glowing region in the lower right center which becomes dark in the shadowed area.
System specifics:
256MB, 500MHz P3, Windows XP Pro, SP1
128MB Nvidia GF4 Ti4200, Detonator 40.72 drivers
Celestia v1.2.5
Don Edwards' http://63.224.48.65/~impulse/Volcanic%20Moon.zip