I checked out the depthmap and noticed that all particles render as black. So I turned off particles -

s_view_Depth.clip_near = 0;
set(s_view_Depth,NOSHADOW);
set(s_view_Depth,NOPARTICLE);

and I can see that the depthmap is completely black if in the shader it is like this -

technique Depthmap
{
pass Pass0
{
cullmode = none;
//alphablendenable=true;

VertexShader = compile vs_2_0 ShadowMapVertexShader();
PixelShader = compile ps_2_0 ShadowMapPixelShader();
}
}

or completely rendered white if it's like this -

technique Depthmap
{
pass Pass0
{
cullmode = none;
alphablendenable=true;

VertexShader = compile vs_2_0 ShadowMapVertexShader();
PixelShader = compile ps_2_0 ShadowMapPixelShader();
}
}

I don't know what the cause of this is... I'm pretty sure I had a depthmap shader working in my project before. But I can't seem to figure out this one, I turned of fog too, but that doesn't seem to be the problem. Changing the values for the dof effect don't seem to do anything.