Vertex and Fragment Shader worldNormal

Question

How to access/calculate worldNormal in a Vertex and Fragment shader ?

Thanks a lot !

Tordin · Accepted Answer · 2013-07-10 13:35:56Z

up vote 2 down vote accepted

Multiply the normal with the worldmatrix, not the world_view_projection.

do this in the vertex shader, and then pass the value down as a linear interpolation value. then you dont need to do it in the pixelshader.

answered Jul 10 at 13:35

Tordin
81818

	Like this ? `o.WorldNormal = normalize( mul(float4(v.normal, 0.0), _Object2World).xyz);` – MaT Jul 10 at 13:37
	Yes, that looks correct. – Tordin Jul 10 at 13:50
	Thank you a lot ! – MaT Jul 10 at 13:51

1 Answer