Celestia Forums

If you speed up time on the earth to a ridiculous rate > 10^7 so the year goes to 20,000 ad or so, the could layer becomes disrupted and makes the earth look like a gas giant. THis happened with the DDS earth in both versions 1.25 and 1.30.. really cool effect. DOn't ask me why any one would won't to speed up time to 10^7 above normal - maybe the wanted to see if the sun becomes a red giant?

I think I have some idea what might be happening . . . A texture transform is used to rotate the clouds. Far in the future, the transform uses a very large translation for the texture, causing a loss of floating point precision when the graphics hardware does texture coordinate interpolation . . . It should be easy to fix; I'll just clamp the translation to [0, 1] before sending it off to the hardware.

--Chris