Version: 2018.4
public static void SetTierSettings (BuildTargetGroup target, Rendering.GraphicsTier tier, Rendering.TierSettings settings);


指定したプラットフォームとシェーダーハードウェア層の PlatformShaderSettings の設定が可能になります。

If the platform you are tweaking is an active build target, the shaders will reload so you can see the results immediately. Please note that if PlatformShaderSettings set to different tiers are not identical, then tier variants will be generated for the shader even if #pragma hardware_tier_variants is missing.