[FIXED]Skybox Rendering

[QuicK]

So...I've got a working skybox and I'm trying to figure out how I can make it better/more realistic.

In the following screenshot, you can see that there are dark lines where the planes intersect.



I've made sure that the images themselves do not have any such lines.

Some information on how the skybox is rendered:

The FloatBuffer data fed to openGL:

http://pastebin.java-gaming.org/551a80d3e4a

The rendering method:

http://pastebin.java-gaming.org/51a8d1e3a43


Also, I know that a new trend in games is to have a spherical skybox.  Should I ditch the old cube-style?


Thanks,
QuicK

[StrideColossus]

Couple of possibilities:

1. Assuming you are using a cube-map texture for your skybox (i.e. six separate texture images) how did you break-up the skybox image into the separate parts?  If you did it manually those lines might just be artifacts in the images themselves.

2. Did you use CLAMP_TO_EDGE as your wrapping policy?

3. Do you see the same artifacts on every edge, or just the three in the picture you posted?

- stride

[QuicK]

1) It was done on the pixel-by-pixel level in Adobe Photoshop CS5

2) No. I'll research this.  If its simple to explain, feel free to explain it on this topic

3) Yes they're on every edge, it's probably the wrapping policy that will fix it.

How would I go about separating the skybox image via an algorithm? PNG decoder?

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[StrideColossus]

1) It was done on the pixel-by-pixel level in Adobe Photoshop CS5

I did the same thing and had the same artifacts that you're seeing, it's quite hard to chop up an image by hand.

2) No. I'll research this.  If its simple to explain, feel free to explain it on this topic

Here's some cut-and-paste pseudo-code code from texture loader class used by my skybox builder (using LWJGL):

1   2   3   4   5   6   7   8   9   10   11   12   13

... final int type = GL_TEXTURE_CUBE_MAP; allocate texture cube-map upload the 6 texture images ... // Set wrapping config final int wrap = GL12.GL_CLAMP_TO_EDGE glTexParameteri( type, GL_TEXTURE_WRAP_R, wrap ); glTexParameteri( type, GL_TEXTURE_WRAP_T, wrap ); glTexParameteri( type, GL_TEXTURE_WRAP_S, wrap ); ... apply min/mag filters ...

3) Yes they're on every edge, it's probably the wrapping policy that will fix it.
How would I go about separating the skybox image via an algorithm? PNG decoder?

Dunno, anyone else have any advice on how to separate the 6 texture images?

[QuicK]

Ahh thanks!

Im not near my computer atm but ive got one question about that code. Is it a one-time binding? Or do I need to do this every render tick?

Itll be nearly 24 hours before I can test this but ill let you know if it works!

Really appreciate the feedback!
(LOVE this forum! And the community)

[davedes]

Im not near my computer atm but ive got one question about that code. Is it a one-time binding? Or do I need to do this every render tick?

The parameter will be attached to the named texture (i.e. the "handle" from glGenTextures). More info here.

[QuicK]

Thank you guys!

I've had to re-write how I load in textures, but it was worth it! It's working perfectly now