[Shader] How to extract 3d world position from pixel(fragment) shader

[MinZe]

Hi! I'm trying to extract the position for every pixel in my pixel shader. I need it to calculate the direction from the camera to each pixel.

How can I achieve this?

[Guest]

Do you need it in projected space or world space? (if world space, you have to create a varying and fill it in the vertex shader)

[NasimiAsl]

vec3 dir = normalize(vPositionW - vEyePosition);

 

http://www.babylonjs-playground.com/#L3PEXN#21