オクルージョン マップ
セカンダリマップ(詳細マップ)& 詳細マスク

Emission

Emission controls the color and intensity of light emitted from the surface. When you use an emissive Material in your Scene, it appears as a visible source of light. The GameObject appears to be self-illuminated.

Emissive materials are usually used on GameObjects where some part should appear to be lit up from inside, such as the screen of a monitor, the disc brakes of a car braking at high speed, glowing buttons on a control panel, or a monster’s eyes which are visible in the dark.

You can define basic emissive materials with a single color and emission level. To enable the Emission property, tick the Emission checkbox. This enables the Color and Global Illumination sub-properties. Click the Color box to open the HDR Color panel. Here you can alter the color of the illumination and the intensity of the emission:

A material with an orange emission color, and an emission brightness of 0.5
A material with an orange emission color, and an emission brightness of 0.5

GameObjects that use these materials appear to remain bright even in dark areas of your Scene.

Red, Green and Blue spheres using emissive materials. Even though they are in a dark Scene, they appear to be lit from an internal light source.
Red, Green and Blue spheres using emissive materials. Even though they are in a dark Scene, they appear to be lit from an internal light source.

As well as simple control over emission using a flat color and brightness setting, you can assign an emission map to this parameter. As with the other texture map parameters, this gives you much finer control over which areas of your material appear to emit light.

If a texture map is assigned, the full color values of the texture are used for the emission color and brightness. The emission value numeric field remains, which you can use as a multiplier to boost or reduce the overall emission level of your material.

左のインスペクター: コンピュータ端末用の emission マップに示します。2つの光る画面とキーボード上の光るキーがあります。右のインスペクター: emission マップを使っている emissive マテリアル。マテリアルは emissive と non-emissive エリアの両方を持っています。
左のインスペクター: コンピュータ端末用の emission マップに示します。2つの光る画面とキーボード上の光るキーがあります。右のインスペクター: emission マップを使っている emissive マテリアル。マテリアルは emissive と non-emissive エリアの両方を持っています。
このイメージには、光のハイレベルとローレベルのエリアがあり、emissive エリアを影が横切って落ちるような変化する光の条件で emissive マテリアルがどのように見えるか、完全な表現を与えられてます。
このイメージには、光のハイレベルとローレベルのエリアがあり、emissive エリアを影が横切って落ちるような変化する光の条件で emissive マテリアルがどのように見えるか、完全な表現を与えられてます。

As well as the emission color and brightness, the Emission parameter has a Global Illumination setting, allowing you to specify how the apparent light emitted from this material affects the contextual lighting of other nearby GameObjects. There are two options

  • Realtime - Unity adds the emissive light from this Material to the Realtime Global Illumination calculations for the Scene. This means that this emissive light affects the illumination of nearby GameObjects, including ones that are moving.

  • Baked - The emissive light from this material is baked into the static lightmaps for the Scene, so other nearby static GameObjects appear to be lit by this material, but dynamic GameObjects are affected.

Baked emissive values from the computer terminals emission map light up the surrounding areas in this dark Scene
Baked emissive values from the computer terminal’s emission map light up the surrounding areas in this dark Scene

オクルージョン マップ
セカンダリマップ(詳細マップ)& 詳細マスク