using System.Collections; using System.Collections.Generic; using UnityEngine; using UnityEngine.Experimental.GlobalIllumination; using Unity.Collections; namespace UnityEngine.Experimental.Rendering.HDPipeline { public class GlobalIlluminationUtils { // Return true if the light must be added to the baking public static bool LightDataGIExtract(Light l, ref LightDataGI ld) { var add = l.GetComponent(); if (add == null) { add = HDUtils.s_DefaultHDAdditionalLightData; } // TODO: Currently color temperature is not handled at runtime, need to expose useColorTemperature publicly Color cct = new Color(1.0f, 1.0f, 1.0f); #if UNITY_EDITOR if (add.useColorTemperature) cct = LightUtils.CorrelatedColorTemperatureToRGB(l.colorTemperature); #endif // TODO: Only take into account the light dimmer when we have real time GI. ld.instanceID = l.GetInstanceID(); ld.color = add.affectDiffuse ? LinearColor.Convert(l.color, l.intensity) : LinearColor.Black(); ld.color.red *= cct.r; ld.color.green *= cct.g; ld.color.blue *= cct.b; ld.indirectColor = add.affectDiffuse ? LightmapperUtils.ExtractIndirect(l) : LinearColor.Black(); ld.indirectColor.red *= cct.r; ld.indirectColor.green *= cct.g; ld.indirectColor.blue *= cct.b; // Note that the HDRI is correctly integrated in the GlobalIllumination system, we don't need to do anything regarding it. // The difference is that `l.lightmapBakeType` is the intent, e.g.you want a mixed light with shadowmask. But then the overlap test might detect more than 4 overlapping volumes and force a light to fallback to baked. // In that case `l.bakingOutput.lightmapBakeType` would be baked, instead of mixed, whereas `l.lightmapBakeType` would still be mixed. But this difference is only relevant in editor builds #if UNITY_EDITOR ld.mode = LightmapperUtils.Extract(l.lightmapBakeType); #else ld.mode = LightmapperUtils.Extract(l.bakingOutput.lightmapBakeType); #endif ld.shadow = (byte)(l.shadows != LightShadows.None ? 1 : 0); if (add.lightTypeExtent == LightTypeExtent.Punctual) { // For HDRP we need to divide the analytic light color by PI (HDRP do explicit PI division for Lambert, but built in Unity and the GI don't for punctual lights) // We apply it on both direct and indirect are they are separated, seems that direct is no used if we used mixed mode with indirect or shadowmask bake. ld.color.intensity /= Mathf.PI; ld.indirectColor.intensity /= Mathf.PI; switch (l.type) { case LightType.Directional: ld.orientation.SetLookRotation(l.transform.forward, Vector3.up); ld.position = Vector3.zero; ld.range = 0.0f; ld.coneAngle = 0.0f; ld.innerConeAngle = 0.0f; #if UNITY_EDITOR ld.shape0 = l.shadows != LightShadows.None ? (Mathf.Deg2Rad * l.shadowAngle) : 0.0f; #else ld.shape0 = 0.0f; #endif ld.shape1 = 0.0f; ld.type = UnityEngine.Experimental.GlobalIllumination.LightType.Directional; ld.falloff = FalloffType.Undefined; break; case LightType.Spot: ld.orientation = l.transform.rotation; ld.position = l.transform.position; ld.range = l.range; ld.coneAngle = l.spotAngle * Mathf.Deg2Rad; // coneAngle is the full angle ld.innerConeAngle = l.spotAngle * Mathf.Deg2Rad * add.GetInnerSpotPercent01(); #if UNITY_EDITOR ld.shape0 = l.shadows != LightShadows.None ? l.shadowRadius : 0.0f; #else ld.shape0 = 0.0f; #endif ld.shape1 = 0.0f; ld.type = UnityEngine.Experimental.GlobalIllumination.LightType.Spot; ld.falloff = add.applyRangeAttenuation ? FalloffType.InverseSquared : FalloffType.InverseSquaredNoRangeAttenuation; /* switch (add.spotLightShape) { case SpotLightShape.Cone: break; case SpotLightShape.Pyramid: break; case SpotLightShape.Box: break; default: Debug.Assert(false, "Encountered an unknown SpotLightShape."); break; } */ break; case LightType.Point: ld.orientation = Quaternion.identity; ld.position = l.transform.position; ld.range = l.range; ld.coneAngle = 0.0f; ld.innerConeAngle = 0.0f; #if UNITY_EDITOR ld.shape0 = l.shadows != LightShadows.None ? l.shadowRadius : 0.0f; #else ld.shape0 = 0.0f; #endif ld.shape1 = 0.0f; ld.type = UnityEngine.Experimental.GlobalIllumination.LightType.Point; ld.falloff = add.applyRangeAttenuation ? FalloffType.InverseSquared : FalloffType.InverseSquaredNoRangeAttenuation; break; // Note: We don't support this type in HDRP, but ini just in case case LightType.Area: ld.orientation = l.transform.rotation; ld.position = l.transform.position; ld.range = l.range; ld.coneAngle = 0.0f; ld.innerConeAngle = 0.0f; #if UNITY_EDITOR ld.shape0 = l.areaSize.x; ld.shape1 = l.areaSize.y; #else ld.shape0 = 0.0f; ld.shape1 = 0.0f; #endif ld.type = UnityEngine.Experimental.GlobalIllumination.LightType.Rectangle; ld.falloff = FalloffType.Undefined; break; default: Debug.Assert(false, "Encountered an unknown LightType."); break; } } else if (add.lightTypeExtent == LightTypeExtent.Rectangle) { ld.orientation = l.transform.rotation; ld.position = l.transform.position; ld.range = l.range; ld.coneAngle = 0.0f; ld.innerConeAngle = 0.0f; #if UNITY_EDITOR ld.shape0 = l.areaSize.x; ld.shape1 = l.areaSize.y; #else ld.shape0 = 0.0f; ld.shape1 = 0.0f; #endif // TEMP: for now, if we bake a rectangle type this will disable the light for runtime, need to speak with GI team about it! ld.type = UnityEngine.Experimental.GlobalIllumination.LightType.Rectangle; ld.falloff = add.applyRangeAttenuation ? FalloffType.InverseSquared : FalloffType.InverseSquaredNoRangeAttenuation; } else if (add.lightTypeExtent == LightTypeExtent.Line) { ld.InitNoBake(ld.instanceID); } else { Debug.Assert(false, "Encountered an unknown LightType."); } return true; } static public Lightmapping.RequestLightsDelegate hdLightsDelegate = (Light[] requests, NativeArray lightsOutput) => { // Get all lights in the scene LightDataGI ld = new LightDataGI(); for (int i = 0; i < requests.Length; i++) { Light l = requests[i]; #if UNITY_EDITOR if (LightmapperUtils.Extract(l.lightmapBakeType) == LightMode.Realtime) ld.InitNoBake(l.GetInstanceID()); else LightDataGIExtract(l, ref ld); #else ld.InitNoBake(l.GetInstanceID()); #endif lightsOutput[i] = ld; } }; } }