SpotLightShadow
drei-spotlight-shadows
A shadow caster that can help cast shadows of different patterns (textures) onto the scene.
<SpotLight>
<SpotLightShadow
distance={0.4} // Distance between the shadow caster and light
alphaTest={0.5} // Sets the alpha value to be used when running an alpha test. See Material.alphaTest
scale={1} // Scale of the shadow caster plane
map={undefined} // Texture - Pattern of the shadow
shader={undefined} // Optional shader to run. Lets you add effects to the shadow map. See bellow
width={512} // Width of the shadow map. The higher the more expnsive
height={512} // Height of the shadow map. The higher the more expnsive
/>
</SpotLight>
An optional shader prop lets you run a custom shader to modify/add effects to your shadow texture. The shader provides the following uniforms and varyings.
| Type | Name | Notes |
|---|---|---|
varying vec2 | vUv | UVs of the shadow casting plane |
uniform sampler2D | uShadowMap | The texture provided to the map prop |
uniform float | uTime | Current time |
Treat the output of the shader like an alpha map where 1 is opaque and 0 is transparent.
gl_FragColor = vec4(vec3(1.), 1.); // Opaque
gl_FragColor = vec4(vec3(0.), 1.); // Transparent