Render to texture problem

[Blizzard]

Hi,
I've a problem with render to texture ando openGL.
I'm using irrlicht 1.0 and I wanto to put the scene render in a texture and then render the texture on screen with driver->draw2DImage(...);

The texture is of the same dimension of the screen.

The problem is that when I draw the texture, the texture is deformed, moved on bottom right and rotated by 180° T_T

I've rewrite the code using gl code, so I've created a quad with the dimensions from (-1,1) [top left] to (1,-1) [bottom right] .
I've load identity matrices on modelview and projection matrix.
The restult is the same.
So I've correct the texture u,v with the glTexCoord2f(...) and I've rotated the texture by 180° in the right way... but the translation and deformation are still present...

Why happen this problem???

Thanks to anyone want to help me!

[hybrid]

Maybe you should not create a texture with non-power-of-2 dimensions. So dont use 800x600, but 1024x1024 and discard the unused parts by choosing the correct texture coords.

[Blizzard]

you're my hero hybrid!

I've used 512x512 texture and now it works correctly.

Previously I've used 640x480 texture with the bad results

Thanks a lot!

Bye