Hi, I have got several question, but I do not like to open mutiple threads, so I will put everything together ;) 1. About the jpeglib. Has someone used it right now? I included all the needed headers and added the libjpeg.lib to my project, but the linker kepps telling me about the undefined references to the functions. Did I miss something? 2. The background again. My project mate keeps nagging about the big textures he has to use when taking skyspheres. He will not take skyboxes, as he realistic background with nebulas and so on. His idol is a game called "X-Tension", where the programmers used little textures (less than 256x256) to fill almost the whole sphere in good quality. He thinks there must be a trick, but I do not think that something like this is possible if the whole texture is mapped on the sphere. Perhaps you have got an idea? 3. Is there any way to control the "repetition rate" (I hope you know what I mean) of the monitor via OpenGL? In other programs there is sometimes the option to set the repetition rate to 60Hz or higher... but I did not hear of that in connection with OpenGL. Perhaps you can give me a hint? 4. That was already all =) Thanks in advance, Marco *the guy who doesn't stop asking ;)*

Quote:Original post by _DarkWIng_
It totaly depends on mapping/coordinats. You can map dome in a way noone will be abe to tell if its a dome or a box.

True, but a skybox still has a more even distibution of texels and less texture distortion than any sphere or dome projection method.
Not to mention it's a lot more easier than doing some custom spherical projection.

the only thing that would be better would be to use some type of spherical texture format(it's on my list of things to do), but sadly it's not supported by any harware, i wish it was.

Quote:Original post by lc_overlord
1. don't use jpegs as textures, they are bad, use libpng or openIL.

I will give it a look (in fact, my project mate wanted jpeg, because of the new jpeg2000 standard, which is not a bad choice in my opinion).
But as I almost got it - why not use it? Do you have some hints to solve my linker-problem?

2. Skyboxes are fine, but what if I want to place a huge nebula in my game? Are the the edges visible?
As I said, my mate keeps nagging about the little textures he had to use in connection with domes in another game (he modded it very intensively) to achieve good quality results. Is something like that possible if the texture is mapped onto the whole dome?

Details should be that far as others wish it. I designed my game to be very friendly to modders, as they can create new sectors and objects (stations, ships, nebulas etc.) without any problems.

So, my program reads text-files, which include the neccessary data. The skybox or skydome is only a 3d-model, so one can decide what to use. Normal placed objects and static objects (you can never reach them, like the moon in the real world as you are driving in your car ;) ) are selectable, billboards will be added soon.

But in fact that is not my problem ;-) The question was, if there could be a little texture mapped on a big sphere without losing its quality. I suspect this option does not exist, as the texture will always be stretched, right?

nope. you can repeat your textures over the dome

Hello,

I do not want to start a new thread, so I use this one, as the title still fits :)

I finished implementing the jpeg-loader and it seems to work, but somehow the images are morrored horizontally. How could I avoid or change this? Swap the image data somehow perhaps?