Alpha fix (#56)

* fix rendering alpha_thre to 0 by default

* bump version

nerfacc/vol_rendering.py

@@ -21,7 +21,7 @@ def rendering(
     t_ends: torch.Tensor,
     # rendering options
     early_stop_eps: float = 1e-4,
-    alpha_thre: float = 1e-2,
+    alpha_thre: float = 0.0,
     render_bkgd: Optional[torch.Tensor] = None,
 ) -> Tuple[torch.Tensor, torch.Tensor, torch.Tensor]:
     """Render the rays through the radience field defined by `rgb_sigma_fn`.

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "nerfacc"
-version = "0.1.5"
+version = "0.1.6"
 description = "A General NeRF Acceleration Toolbox."
 readme = "README.md"
 authors = [{name = "Ruilong", email = "ruilongli94@gmail.com"}]