# Cutout shadows

an alpha-tested material casts a holed shadow (RM-G11).

```{raw} html
<a class="example-run-button" href="../demos/features_3d_cutoff_shadows.html">▶ Run in browser</a>

```

**Tags:** `3d` `shadows` `cutoff` `alpha-test` `cutout`

A material with ``blend="cutoff"`` discards fragments whose albedo alpha is below
``alpha_cutoff``. Before RM-G11 the shadow pass ignored the albedo and such a
cutout cast a SOLID silhouette; now the directional (and point/spot) shadow
casters sample the albedo alpha and discard holed fragments, so the shadow shows
the cutout. Here a horizontal panel textured with a checkerboard alpha mask hangs
over the ground under a directional sun: the sun projects the checkerboard through
the panel's holes onto the floor. A solid opaque slab beside it casts an ordinary
filled shadow for contrast.


Usage:
    uv run python examples/features/3d/cutoff_shadows.py

## Source

```{literalinclude} ../../examples/features/3d/cutoff_shadows.py
:language: python
:linenos:
```