ScriptableRenderPipeline/ScriptableRenderPipeline/HDRenderPipeline/HDRP/Sky/SkyRenderer.cs

namespace UnityEngine.Experimental.Rendering.HDPipeline
{
    public abstract class SkyRenderer
    {
        public abstract void Build();
        public abstract void Cleanup();
        public abstract void SetRenderTargets(BuiltinSkyParameters builtinParams);
        // renderForCubemap: When rendering into a cube map, no depth buffer is available so user has to make sure not to use depth testing or the depth texture.
        public abstract void RenderSky(BuiltinSkyParameters builtinParams, bool renderForCubemap);
        public abstract bool IsValid();

        protected float GetExposure(SkySettings skySettings, DebugDisplaySettings debugSettings)
        {
            float debugExposure = 0.0f;
            if(debugSettings != null && debugSettings.DebugNeedsExposure())
            {
                debugExposure = debugSettings.lightingDebugSettings.debugExposure;
            }
            return skySettings.exposure + debugExposure;
        }
    }
}