Problems with jpg bumpmapping and dds textures.

[berdej]

My problems concerns earth.

First problem:
Do I have to use the same size in main texture and bumpmap? If I use 8k dds texture and 2k jpg bumpmap then textures aren't covered. Textures are shifted and I have bumps on ocean e.g.
There aren't such problems if I use jpg format for main texture and jpg for bumpmap texture. Even if they are in diffderent size.

Second problem:
If I'm using bumpmapping I have to turn off Vertex Shader because with Vertex Shader mountains are lower and here and there I have valleys instead of mountains.
I have to turn off Vertex Shader if I use big textures (>4k) for main and bumpmap because with vertex shader bumpmapping doesn't work and there's incorrect lighting. Two spot lights on the earth. Simply big mess.

Third problem:
If I use 8k jpg bumpmap and 8k dds main texture I have to wait 5 minutes for scene loading.
If I use 8k dds main texture without bumpmap texture I have to wait about 6 seconds for scene loading.
Will help 8k dds bumpmap texture? I've heard dds isn't good format for bumpmapping textures.

My Hardware: 256MB RAM, GF3 Ti200 64MB.

[selden]

berdej,

You need to specify which version of Celestia you are running. Upgrade to v1.2.5 if you have not already done so.

[John Van Vliet]

lets start with the first one it sounds like you are using a old vresion
upgread to 1.2.5.pre7

[Don. Edwards]

It sounds to me like the bumpmap and the dds texture are not based on hte same image. This would also cause a misalignment of the texture with the bumpmap.

[berdej]

Thanks.
I use version 1.2.4.
I will try with celestia-win32-1.2.5.