Fixed an oversight with the face shadow softness

I used a regular if else statement to test the softness to be above a certain threshold. This controlled whether or not the shader should step() the shadow region or if it should use it as it comes from the shadow_ndotl() function.
This wouldn't normally be a problem except that this is something that should ONLY be used when the material is toggled as a face material.

shader.fxsub

@@ -153,15 +153,13 @@ float4 ps_model(vs_out i, float vface : VFACE, uniform bool backface_uv2) : COLO
     shadow = (shadow - cont_shadow_dark) * (cont_shadow_bright + 1.0f) * (float3(cont_shadow_r, cont_shadow_g, cont_shadow_b) + 1.0f);
     shadow_region.x = saturate(shadow_region.x);
     float shadow_soft = FACE_SHADOW_SOFTNESS;
-    if(shadow_soft <= 0.045f)
-    {
+    #ifdef USE_FACE_SHADOW_MAP 
         shadow_region.x =  step( 0.975f, shadow_region.x);
         shadow = lerp(shadow, (float3)1.0f, step( 0.975f, shadow_region.x));
-    }
-    else
-    {
+    #else
+
         shadow = lerp(shadow, (float3)1.0f, shadow_region.x);
-    }
+    #endif
     // they dont do it like this in the game code but this is the easiest and thing im most used to
     // shadow = shadow * saturate(model_color.xyz + 0.25f); // this will decrease the shadow brightness when the light color is decreased