4 replies to this topic

[AlanWu]

i have many different texture in a draw call so i use texture atlas

but if i want some of those textures have different rotation,what could i do?

Help! Thanks!

[irreversible]

Rotate the quad?

 

Or do you absolutely need to rotate the texture itself?

Edited by irreversible, 19 January 2013 - 10:51 PM.

[SeraphLance]

This is a really bizarre problem.  Short of just rotating the quad like Irreversible said, maybe you can just apply a rotation matrix to your quad's texture coordinates?

[radioteeth]

I'd opt for texture matrix manipulation myself. Preventing the surrounding textures in the atlas from intruding on the rastered poly is something else tho.

[Mercile55]

Any object that is texture mapped, can be rotated freely, without a slightest change in texture coordinates. That's how it works. Your only ever need to rotate a texture itself is when you want to somewhat animate it on all objects at the same time, without having to change the mapping.