Celestia Forums

I realized that the spotted pattern is not only visible in Uranus and Venus,but also in Neptune and in the clouds of Jupiter.In the case of the former,this pattern don?t dissapear even when I used the original textures(in case of Uranus,appeared two ugly violet strips and planet?s appearance looks like very artificial).In the case of Jupiter and Neptune,the effect is minor,but exists.I think this happened when I passed from Celestia 1.3.0 to Celestia 1.3.1.Could the textures not adjusted to Celestia 1.3.1?Or maybe,is my video card?
To better understand,Saturn looks like almost real,but Uranus seem to be painted by hand,like in the PAINT program,very crude,indeed.
I was wondering if the problem only occured to 1k textures,but VenusClouds.png of Jonh?s site is 2k.So,i really don?t undertand.
Other thing,when we will have a real 2k cloud texture for Jupiter.When I see the properties of a supposed 2k,it was read as 1024X512(t00fri texture)

Daniel,

I'd suggest installing v1.3.1 from scratch into a different directory. Never, ever modify that copy, no matter how much you're tempted. Then you can compare your current setup with what that original version does.

Guessing really doesn't help when you're trying to isolate the cause of a problem. You need to compare what happens with unmodified software.

I'm guessing from your description that Celestia sometimes uses only a small number of colors (256, for example, if it's using 8bits of color) instead of millions (24 or 32bits of color). Make sure your display settings are for "millions of colors" and not for only "medium" 16bits (64 thousand colors).

Sometimes colors are limited because of conflicts with other programs. Shutdown all of the other programs that are trying to use the display -- paint, winamp, etc.

The problem was solved.It was only a matter of 16 bit colorX32 bit color.I didn?t need to reinstall the program.But I wondering why Celestia use so many colors even in the bland disk of Uranus

selden wrote:Daniel,

I'd suggest installing v1.3.1 from scratch into a different directory. Never, ever modify that copy, no matter how much you're tempted. Then you can compare your current setup with what that original version does.

Guessing really doesn't help when you're trying to isolate the cause of a problem. You need to compare what happens with unmodified software.

I'm guessing from your description that Celestia sometimes uses only a small number of colors (256, for example, if it's using 8bits of color) instead of millions (24 or 32bits of color). Make sure your display settings are for "millions of colors" and not for only "medium" 16bits (64 thousand colors).

Sometimes colors are limited because of conflicts with other programs. Shutdown all of the other programs that are trying to use the display -- paint, winamp, etc.

Daniel,

The human eye is extremely good at seeing very subtle differences in color when the colored regions are next to one another. Even when you use 8 bits/color (24 bits/pixel) you'll still see banding if the color variations are spread out over the entire screen.

That's why many professional digital cameras now have 16 bits per color in their CCDs -- for a total of 48 bits per pixel. Maybe someday the consumer graphics cards will be that good.