Mesh: Mapping a texture file

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1

Hi,

i have

  • a grid with the resolution if 5 x 3 (=> 8 subareas)
  • a vertex buffer with texture coordinates
  • and finnaly a mesh mit 48 indices

Actually my texture file is displayed 8 times (compare grid resolution).

Which texture coordinates do i have to use in order to display one big sized texture file?

Thanks,
Johannes

2

hello kitty,

make sure your texture coordinates go from 0,0 to 1,1 over all the vertices. so the topleftmost vertex would have a texcoord of 0,0 and the bottomrightmost 1,1. all the vertices between should have according interpolated texcoords. shouldn’t be too tricky, hope that helps.

3

Hi joreg, thanks for your reply!!

I even dont know how many texture coordinates i have to use. 15, because i have a grid of 5 x 3? How are the coordinates ordered?

THANKS,
Johannes

#cccccc:PS: Sorry for this beginner question!

4

texture coordinates are a property of the vertex. just like the position (xyz) is. so you have one texture-coordinate per vertex, which makes 15 in your case, right. which makes a spread of 30 values as each texcoord is a 2D vector. see?