PointLight shadow camera far value

[jcubed111]

Description of the problem

When you create a PointLight, it also creates a camera to use when rendering shadows.

three.js/src/lights/PointLight.js

Line 36 in 0949e59

this.shadow = new LightShadow( new PerspectiveCamera( 90, 1, 0.5, 500 ) );

This camera always gets a far value of 500, but if you set the PointLight to have a finite distance, shadows will never be cast beyond that distance. So, it might make sense to default the camera's far value to min(distance, 500) if distance != 0.

Alternatively, perhaps a note on the documentation page could mention that if you're using point lights with a finite distance, you should manually set the shadow camera's far value.

Setting the camera's far value to be the same as the light's distance has no effect on the render result, since the light doesn't contribute at distance anyway, but it improves performance for me in complex scenes.

Three.js version

• Dev
• r94

Browser

• All of them
• Chrome
• Firefox
• Internet Explorer

OS

• All of them
• Windows
• macOS
• Linux
• Android
• iOS

Hardware Requirements (graphics card, VR Device, ...)