Question regarding rendertextures.

[Lolilolight]

Hi !

I would like to know if it's possible to get the zPosition of pixels from a rendertexture in a fragment shader just like it's shown in this following link with an fbo :


http://ogldev.atspace.co.uk/www/tutorial23/tutorial23.html

Or should I reimplement the render texture class ?
I would like to do a two pass rendering with a depth and alpha test.

[PoxBear]

I too would be interested in knowing this.