SDK Question trying to understand higher level texturing

[Pyromaniac605]

Levels are as follows:
8 - 8192 by 4096
9 - 16384 by 8192
10 - 32768 by 16384
11 - 65536 by 32768
n - 2^(n+5) by 2^(n+4)

According to GIMP that makes a level 11 texture 18.6 Gigabytes, are you certain that is correct?

Darren

 

[orb]

According to GIMP that makes a level 11 texture 18.6 Gigabytes, are you certain that is correct?

Darren

I'm sure the texture dimensions are correct.

Do you want to create it as a single image with those dimensions? Are you sure it's 18.6 GB? The uncompressed image of that dimensions should take 8 GB in 32 bpp mode.

 

[Pyromaniac605]

I'm sure the texture dimensions are correct.

Do you want to create it as a single image with those dimensions? Are you sure it's 18.6 GB? The uncompressed image of that dimensions should take 8 GB in 32 bpp mode.

When I try to create an image with those dimensions it says "You are trying to create and image with a size of 18.6 GB.
An image of the chosen size will use more memory than what is configured as "Maximum Image Size" in the Preferences dialog (currently 128.0 MB)."

Darren

Edit: 8 GB!!! I'm sure the level 11 Earth texture I downloaded was nowhere near that big!

 

[orb]

Edit: 8 GB!!! I'm sure the level 11 Earth texture I downloaded was nowhere near that big!

8 GB uncompressed, like Windows bitmap. Orbiter textures use lossy DXT compression method, hence they are much smaller, and additionally Earth isn't covered with those level 11 textures globally, but only lands use them.

If you don't believe me, believe martins:
http://www.orbiter-forum.com/showpost.php?p=153421&postcount=9

 

[Pyromaniac605]

So you're saying I need to make it as a 18.6 GB file then convert it to .tex where it will be much smaller?

Darren

 

[orb]

So you're saying I need to make it as a 18.6 GB file then convert it to .tex where it will be much smaller?

No, you don't. You can make a bunch of smaller textures (for example 8192x8192) as appropriate parts of the planet, create Orbiter textures from them, and then merge to a single texture file (also with pltex).

 

[Pyromaniac605]

What is pltex? I don't remember you mentioning that to me before.

Darren

 

[orb]

What is pltex? I don't remember you mentioning that to me before.

Darren

Didn't you read this thread before posting?

 

[Pyromaniac605]

Didn't you read this thread before posting?

Yes, but I read it earlier and forgot most of the first page. :facepalm:
Off to go make a texture now.

Darren