i965: Use brw_nir_cubemap_normalize for NIR shaders

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

src/mesa/drivers/dri/i965/brw_fs_nir.cpp

@@ -104,6 +104,9 @@ fs_visitor::emit_nir_code()
    nir_lower_tex_projector(nir);
    nir_validate_shader(nir);
 
+   nir_normalize_cubemap_coords(nir);
+   nir_validate_shader(nir);
+
    nir_split_var_copies(nir);
    nir_validate_shader(nir);
 

src/mesa/drivers/dri/i965/brw_shader.cpp

@@ -173,7 +173,8 @@ brw_link_shader(struct gl_context *ctx, struct gl_shader_program *shProg)
       brw_lower_texture_gradients(brw, shader->base.ir);
       do_vec_index_to_cond_assign(shader->base.ir);
       lower_vector_insert(shader->base.ir, true);
-      brw_do_cubemap_normalize(shader->base.ir);
+      if (options->NirOptions == NULL)
+         brw_do_cubemap_normalize(shader->base.ir);
       lower_offset_arrays(shader->base.ir);
       brw_do_lower_unnormalized_offset(shader->base.ir);
       lower_noise(shader->base.ir);