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Texturing question

Started by Moolicious Dec 19, 2004 at 3:38 AM 6 replies 1.4k views

Original Post

Dec 19, 2004 at 3:38 AM

Hi, I would like to know how to tile a texture to a large rectanglular surface. i.e. two triangle primatives setup like this |/| It's a large area and it's a waste to create multiple triangles to cover the area. I picked up somewhere in a tutorial that it is possible to title the same texture to the surface. Is this possible and how? Or just point me to text which does explain it. I hope I have been clear. Thanks in advance!

GroZZleR

141

GroZZleR

Dec 19, 2004 at 4:03 AM

If I'm getting you, I think you want to take 1 texture and tile it repeatedly on the same quad? If so, just double your texture co-ordinates.

0.0,0.0      2.0,0.00.0,2.0      2.0,2.0

Pretty sure that will give you 4 reptitions of the same texture.

Moolicious

Author

Moolicious

Dec 19, 2004 at 5:09 AM

I didn't realise it would be that simple!

Thanks

sirob

105

sirob

Dec 19, 2004 at 6:54 AM

You need to change your TextureSamplerState to D3DTADDRESS_WRAP for it to work correctly.

dave

322

dave

Dec 19, 2004 at 8:28 AM

Quote:
Original post by sirob
You need to change your TextureSamplerState to D3DTADDRESS_WRAP for it to work correctly.

Do you?

I have never done that, unless that is set as default in Direct3D.

Well enlighten me :)...

ace

Moolicious

Author

Moolicious

Dec 19, 2004 at 8:56 AM

The default is set as D3DTADDRESS_WRAP so it is not necessary to set it if
you just want to tile.
Just some other states if anyone's interested?

D3DTADDRESS_WRAP (default)
D3DTADDRESS_MIRROR
D3DTADDRESS_CLAMP
D3DTADDRESS_BORDER
D3DTADDRESS_MIRRORONCE

Moolicious

dave

322

dave

Dec 19, 2004 at 9:02 AM

What does:

D3DTADDRESS_CLAMP

Do?

ace

Reaper_Unreal

Dec 19, 2004 at 9:13 AM

It takes the pixels that were at the outer edge and stretches them to cover the rest of the surface. That way the texture is only shown once. Read the Direct X SDK, it'll give you a much better explanation. Or even better, try it out for yourself!

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