565 lines
20 KiB
Ucode
565 lines
20 KiB
Ucode
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/**
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* Copyright 1998-2013 Epic Games, Inc. All Rights Reserved.
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*/
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class LightComponent extends ActorComponent
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native(Light)
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noexport
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abstract;
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//@warning: this structure is manually mirrored in UnActorComponent.h
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struct LightingChannelContainer
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{
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/** Whether the lighting channel has been initialized. Used to determine whether UPrimitveComponent::Attach should set defaults. */
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var bool bInitialized;
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`if(`__TW_LIGHTING_MODIFICATIONS_) // Custom lighting channel implementation
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// User settable channels that are auto set and true for lights
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var bool BSP;
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var bool Static;
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var bool Dynamic;
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// User set channels.
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var bool CompositeDynamic;
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var bool Skybox;
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var bool Unnamed_1;
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var bool Unnamed_2;
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var bool Unnamed_3;
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var bool Unnamed_4;
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var bool Unnamed_5;
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var bool Unnamed_6;
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var bool Cinematic_1;
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var bool Cinematic_2;
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var bool Cinematic_3;
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var bool Cinematic_4;
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var bool Cinematic_5;
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var bool Cinematic_6;
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var bool Cinematic_7;
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var bool Cinematic_8;
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var bool Cinematic_9;
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var bool Cinematic_10;
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var bool Gameplay_1;
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var bool Gameplay_2;
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var bool Gameplay_3;
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var bool Gameplay_4;
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var bool Crowd;
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var() bool Indoor;
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var() bool Outdoor;
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`else
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// User settable channels that are auto set and true for lights
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var() bool BSP;
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var() bool Static;
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var() bool Dynamic;
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// User set channels.
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var() bool CompositeDynamic;
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var() bool Skybox;
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var() bool Unnamed_1;
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var() bool Unnamed_2;
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var() bool Unnamed_3;
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var() bool Unnamed_4;
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var() bool Unnamed_5;
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var() bool Unnamed_6;
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var() bool Cinematic_1;
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var() bool Cinematic_2;
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var() bool Cinematic_3;
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var() bool Cinematic_4;
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var() bool Cinematic_5;
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var() bool Cinematic_6;
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var() bool Cinematic_7;
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var() bool Cinematic_8;
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var() bool Cinematic_9;
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var() bool Cinematic_10;
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var() bool Gameplay_1;
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var() bool Gameplay_2;
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var() bool Gameplay_3;
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var() bool Gameplay_4;
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var() bool Crowd;
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`endif
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};
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var native private transient noimport const pointer SceneInfo;
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var native const transient matrix WorldToLight;
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var native const transient matrix LightToWorld;
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/**
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* GUID used to associate a light component with precomputed shadowing information across levels.
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* The GUID changes whenever the light position changes.
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*/
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var const duplicatetransient guid LightGuid;
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/**
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* GUID used to associate a light component with precomputed shadowing information across levels.
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* The GUID changes whenever any of the lighting relevant properties changes.
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*/
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var const duplicatetransient guid LightmapGuid;
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var() const interp float Brightness <UIMin=0.0 | UIMax=20.0>;
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var() const interp color LightColor;
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`if(`__TW_LIGHTING_MODIFICATIONS_)
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/** Used to control the contribution of NdotL Lambertian lighting factor. Primary use case if for fill lights that have DisableSpecular=True */
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var() float Hardness <UIMin=0.0 | UIMax=1.0 | ClampMin=0.0 | ClampMax=1.0>;
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`endif
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/**
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* The light function to be applied to this light.
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* Note that only non-lightmapped lights (UseDirectLightMap=False) can have a light function.
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*/
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var() const editinline export LightFunction Function;
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/** Is this light enabled? */
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var() const bool bEnabled;
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/**
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* Whether the light should cast any shadows.
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**/
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var() const bool CastShadows;
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/**
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* Whether the light should cast shadows from static objects. Also requires Cast Shadows to be set to True.
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*/
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var() const bool CastStaticShadows;
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`if(`__TW_LIGHTING_MODIFICATIONS_)
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/**
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* Whether the light should cast dynamic whole scene shadows from static objects. Also requires Cast Shadows to be set to True.
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* This is usually used in combination with Cast Static Shadows set to True, and the primitives the light affects will either cast a
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* static shadow or a dynamic shadow based on the proximity of the camera to the light.
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**/
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var() bool CastDynamicShadows<DisplayName=Cast Whole Scene Dynamic Shadows>;
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/**
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* Whether this light should force dynamic shadows even if the primitive is not set to cast dynamic shadows.
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* Not exposed to editor. Use for special cases light the flashlight to prevent light bleeding.
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*/
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var bool ForceCastDynamicShadows;
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`else
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/**
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* Whether the light should cast shadows from dynamic objects. Also requires Cast Shadows to be set to True.
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**/
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var() bool CastDynamicShadows;
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`endif
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/** Whether the light should cast shadows from objects with composite lighting (i.e. an enabled light environment). */
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var() bool bCastCompositeShadow;
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/** If bCastCompositeShadow=TRUE, whether the light should affect the composite shadow direction. */
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var() bool bAffectCompositeShadowDirection;
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/**
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* If enabled and the light casts modulated shadows, this will cause self-shadowing of shadows rendered from this light to use normal shadow blending.
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* This is useful to get better quality self shadowing while still having a shadow on the lightmapped environment.
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* When enabled it incurs most of the rendering overhead of both approaches combined.
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*/
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var() bool bNonModulatedSelfShadowing;
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/** Whether the light should cast shadows only from a dynamic object onto itself. */
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var() interp bool bSelfShadowOnly;
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`if(`__TW_LIGHTING_MODIFICATIONS_)
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// SRS - Exposed property to editor
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/** Whether to allow preshadows (the static environment casting dynamic shadows on dynamic objects) from this light. */
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var() bool bAllowPreShadow<DisplayName=Allow Per Object PreShadow>;
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`else
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/** Whether to allow preshadows (the static environment casting dynamic shadows on dynamic objects) from this light. */
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var bool bAllowPreShadow;
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`endif
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/**
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* Whether the light should cast shadows as if it was movable, regardless of its class.
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* This is useful for gameplay lights dynamically spawned and attached to a static actor.
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*/
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var const bool bForceDynamicLight;
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/** If set to false on a static light, forces it to use precomputed shadowing instead of precomputed lighting. */
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var const bool UseDirectLightMap;
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/** Whether light has ever been built into a lightmap */
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var const bool bHasLightEverBeenBuiltIntoLightMap;
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/** Whether the light can affect dynamic primitives even though the light is not affecting the dynamic channel. */
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var const bool bCanAffectDynamicPrimitivesOutsideDynamicChannel;
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/** Whether to render light shafts from this light. Only non-static lights can render light shafts (toggleable, movable or dominant types). */
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var(LightShafts) bool bRenderLightShafts;
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/** Whether to replace this light's analytical specular with image based specular on materials that support it. */
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var(ImageReflection) bool bUseImageReflectionSpecular <bShowOnlyWhenTrue=bShowD3D11Properties>;
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/** The precomputed lighting for that light source is valid. It might become invalid if some properties change (e.g. position, brightness). */
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var protected const bool bPrecomputedLightingIsValid;
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/** Whether this light is being used as the OverrideLightComponent on a primitive and shouldn't affect any other primitives. */
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var protected const bool bExplicitlyAssignedLight;
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/** Whether this light can be combined into the DLE normally. Overriden to false in the case of muzzle flashes to prevent SH artifacts */
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var bool bAllowCompositingIntoDLE;
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`if(`__TW_LIGHTING_MODIFICATIONS_) // BITFIELDS
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/** Whether the light should cast dynamic per object shadows from dynamic objects that have Allow Per Object Shadows set to True.
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* This must be set to true if you want the light to cast character shadows (which are per object). Also requires Cast Shadow to be set to True.
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*/
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var() bool bCastPerObjectShadows<DisplayName=Cast Per Object Dynamic Shadows>;
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/** If set, the auto light channel generation will not modify the light channel for this light */
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var() const bool bOverrideAutoLightingChannels;
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/**
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* Disable specular component of the light for diffuse only lighting.
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* This can be used to simulate fill lighting
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*/
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var() bool bDisableSpecular;
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/** If set, owner is responsible for ticking the light animation */
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var transient bool bOverrideLightAnimTick;
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/** If set, when light is rendered also update owner's LastRenderTime. Used to modify skip rate code in SkelComp::Tick */
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var bool bUpdateOwnerRenderTime;
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`endif
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/**
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* The light environment which the light affects.
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* NULL represents an implicit default light environment including all primitives and lights with LightEnvironment=NULL.
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*/
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var const LightEnvironmentComponent LightEnvironment;
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/** Lighting channels controlling light/ primitive interaction. Only allows interaction if at least one channel is shared */
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var() const LightingChannelContainer LightingChannels;
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//@warning: this structure is manually mirrored in UnActorComponent.h
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enum ELightAffectsClassification
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{
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LAC_USER_SELECTED,
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LAC_DYNAMIC_AFFECTING,
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LAC_STATIC_AFFECTING,
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LAC_DYNAMIC_AND_STATIC_AFFECTING
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};
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/**
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* This is the classification of this light. This is used for placing a light for an explicit
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* purpose. Basically you can now have "type" information with lights and understand the
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* intent of why a light was placed. This is very useful for content people getting maps
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* from others and understanding why there is a dynamic affect light in the middle of the world
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* with a radius of 32k! And also useful for being able to do searches such as the following:
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* show me all lights which effect dynamic objects. Now show me the set of lights which are
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* not explicitly set as Dynamic Affecting lights.
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*
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**/
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var() const editconst ELightAffectsClassification LightAffectsClassification;
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enum ELightShadowMode
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{
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/** Shadows rendered due to absence of light when doing dynamic lighting. High overhead per-light, especially on xbox 360. */
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LightShadow_Normal,
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/** Shadows rendered as a fullscreen pass by modulating entire scene by a shadow factor. Least expensive, Default. */
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LightShadow_Modulate,
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/** Deprecated */
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LightShadow_ModulateBetter
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};
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/** The type of shadowing to apply for the light. */
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var() ELightShadowMode LightShadowMode;
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/** The color to modulate with pixels that receive a dynamic shadow from this light (if it casts modulated shadows). */
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var() LinearColor ModShadowColor;
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/** Time since the caster was last visible at which the mod shadow will fade out completely. */
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var float ModShadowFadeoutTime;
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/** Exponent that controls mod shadow fadeout curve. */
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var float ModShadowFadeoutExponent;
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/**
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* The munged index of this light in the light list
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*
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* > 0 == static light list
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* 0 == not part of any light list
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* < 0 == dynamic light list
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*/
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var const native duplicatetransient int LightListIndex;
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enum EShadowProjectionTechnique
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{
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/** Shadow projection is rendered using either PCF/VSM based on global settings */
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ShadowProjTech_Default,
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/** Shadow projection is rendered using the PCF (Percentage Closer Filtering) technique. May have heavy banding artifacts */
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ShadowProjTech_PCF,
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/** Shadow projection is rendered using the VSM (Variance Shadow Map) technique. May have shadow offset and light bleed artifacts */
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ShadowProjTech_VSM,
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/** Shadow projection is rendered using the Low quality Branching PCF technique. May have banding and penumbra detection artifacts */
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ShadowProjTech_BPCF_Low,
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/** Shadow projection is rendered using the Medium quality Branching PCF technique. May have banding and penumbra detection artifacts */
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ShadowProjTech_BPCF_Medium,
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/** Shadow projection is rendered using the High quality Branching PCF technique. May have banding and penumbra detection artifacts */
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ShadowProjTech_BPCF_High
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};
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/** Type of shadow projection to use for this light */
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var EShadowProjectionTechnique ShadowProjectionTechnique;
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enum EShadowFilterQuality
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{
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SFQ_Low,
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SFQ_Medium,
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SFQ_High
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};
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/** The quality of filtering to use for dynamic shadows cast by the light. */
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var() EShadowFilterQuality ShadowFilterQuality;
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/**
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* Override for min dimensions (in texels) allowed for rendering shadow subject depths.
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* This also controls shadow fading, once the shadow resolution reaches MinShadowResolution it will be faded out completely.
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* A value of 0 defaults to MinShadowResolution in SystemSettings.
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*/
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var() int MinShadowResolution;
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/**
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* Override for max square dimensions (in texels) allowed for rendering shadow subject depths.
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* A value of 0 defaults to MaxShadowResolution in SystemSettings.
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*/
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var() int MaxShadowResolution;
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/**
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* Resolution in texels below which shadows begin to be faded out.
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* Once the shadow resolution reaches MinShadowResolution it will be faded out completely.
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* A value of 0 defaults to ShadowFadeResolution in SystemSettings.
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*/
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var() int ShadowFadeResolution;
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/** Everything closer to the camera than this distance will occlude light shafts for directional lights. */
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var(LightShafts) float OcclusionDepthRange;
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/**
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* Scales additive color near the light source. A value of 0 will result in no additive term.
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* If BloomScale is 0 and OcclusionMaskDarkness is 1, light shafts will effectively be disabled.
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*/
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var(LightShafts) interp float BloomScale;
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/** Scene color luminance must be larger than this to create bloom in light shafts. */
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var(LightShafts) float BloomThreshold;
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/**
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* Scene color luminance must be less than this to receive bloom from light shafts.
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* This behaves like Photoshop's screen blend mode and prevents over-saturation from adding bloom to already bright areas.
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* The default value of 1 means that a pixel with a luminance of 1 won't receive any bloom, but a pixel with a luminance of .5 will receive half bloom.
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*/
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var(LightShafts) float BloomScreenBlendThreshold;
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/** Multiplies against scene color to create the bloom color. */
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var(LightShafts) interp color BloomTint;
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/** 100 is maximum blur length, 0 is no blur. */
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var(LightShafts) float RadialBlurPercent;
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/**
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* Controls how dark the occlusion masking is, a value of .5 would mean that an occlusion of 0 only darkens underlying color by half.
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* A value of 1 results in no darkening term. If BloomScale is 0 and OcclusionMaskDarkness is 1, light shafts will effectively be disabled.
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*/
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var(LightShafts) interp float OcclusionMaskDarkness;
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/** Scales the contribution of the reflection specular highlight. */
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var(ImageReflection) float ReflectionSpecularBrightness <bShowOnlyWhenTrue=bShowD3D11Properties>;
|
||
|
|
|
||
|
|
`if(`__TW_LIGHTING_MODIFICATIONS_)
|
||
|
|
/**
|
||
|
|
* Max draw distance beyond which the light will be culled
|
||
|
|
*/
|
||
|
|
var() const float MaxDrawDistance;
|
||
|
|
|
||
|
|
/** The maximum brightness value for this light. Default is 1.0 */
|
||
|
|
var float MaxBrightness<UIMin=0.0|ClampMin=0.0>;
|
||
|
|
/** The minimum brightness override value for this light. If 0, it uses the
|
||
|
|
global value for the light animation type specified in WorldInfo. */
|
||
|
|
var float MinBrightness<UIMin=0.0|ClampMin=0.0>;
|
||
|
|
/** Light animation type used by this light */
|
||
|
|
var byte AnimationType;
|
||
|
|
/** The rate at which the LightAnimation is played. Default is 1.0. Must be greater than 0 */
|
||
|
|
var float AnimationFrequency<UIMin=0.01|ClampMin=0.01|UIMax=20.0|ClampMax=20.0>;
|
||
|
|
/** Time offset into the LightAnimation. This is used to add variation so that
|
||
|
|
all the animations are not in perfect sync. default is 0.0.
|
||
|
|
Note: This value will not have any effect it is a multiple of the inverse of the AnimationFrequency.
|
||
|
|
Eg. If the AnimationFrequency is 0.5, AnimationTimeOffsets of 2, 4, 6 ... will have same effect at 0 */
|
||
|
|
var float AnimationTimeOffset;
|
||
|
|
|
||
|
|
/** How many times the light animation was ticked. */
|
||
|
|
var transient int LightAnimFrameCount;
|
||
|
|
/** The value of WorldInfo->TimeSeconds for the frame when this actor was last rendered. */
|
||
|
|
var transient float LastRenderTime;
|
||
|
|
`endif
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Toggles the light on or off
|
||
|
|
*
|
||
|
|
* @param bSetEnabled TRUE to enable the light or FALSE to disable it
|
||
|
|
*/
|
||
|
|
native final function SetEnabled(bool bSetEnabled);
|
||
|
|
|
||
|
|
/** sets Brightness, LightColor, and/or LightFunction */
|
||
|
|
native final function SetLightProperties(optional float NewBrightness = Brightness, optional color NewLightColor = LightColor, optional LightFunction NewLightFunction = Function);
|
||
|
|
|
||
|
|
/** Script interface to retrieve light location. */
|
||
|
|
native final function vector GetOrigin();
|
||
|
|
|
||
|
|
/** Script interface to retrieve light direction. */
|
||
|
|
native final function vector GetDirection();
|
||
|
|
|
||
|
|
/** Script interface to update the color and brightness on the render thread. */
|
||
|
|
native final function UpdateColorAndBrightness();
|
||
|
|
|
||
|
|
/** Script interface to update light shaft parameters on the render thread. */
|
||
|
|
native final function UpdateLightShaftParameters();
|
||
|
|
|
||
|
|
/** Called from matinee code when BloomScale property changes. */
|
||
|
|
function OnUpdatePropertyBloomScale()
|
||
|
|
{
|
||
|
|
UpdateLightShaftParameters();
|
||
|
|
}
|
||
|
|
|
||
|
|
/** Called from matinee code when BloomTint property changes. */
|
||
|
|
function OnUpdatePropertyBloomTint()
|
||
|
|
{
|
||
|
|
UpdateLightShaftParameters();
|
||
|
|
}
|
||
|
|
|
||
|
|
/** Called from matinee code when OcclusionMaskDarkness property changes. */
|
||
|
|
function OnUpdatePropertyOcclusionMaskDarkness()
|
||
|
|
{
|
||
|
|
UpdateLightShaftParameters();
|
||
|
|
}
|
||
|
|
|
||
|
|
/** Called from matinee code when Brightness property changes. */
|
||
|
|
function OnUpdatePropertyBrightness()
|
||
|
|
{
|
||
|
|
UpdateColorAndBrightness();
|
||
|
|
}
|
||
|
|
|
||
|
|
/** Called from matinee code when LightColor property changes. */
|
||
|
|
function OnUpdatePropertyLightColor()
|
||
|
|
{
|
||
|
|
UpdateColorAndBrightness();
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
defaultproperties
|
||
|
|
{
|
||
|
|
LightAffectsClassification=LAC_USER_SELECTED
|
||
|
|
|
||
|
|
Brightness=1.0
|
||
|
|
LightColor=(R=255,G=255,B=255)
|
||
|
|
bEnabled=TRUE
|
||
|
|
|
||
|
|
// for now we are leaving this as people may be depending on it in script and we just
|
||
|
|
// set the specific default settings in each light as they are all pretty different
|
||
|
|
CastShadows=TRUE
|
||
|
|
CastStaticShadows=TRUE
|
||
|
|
CastDynamicShadows=TRUE
|
||
|
|
bCastCompositeShadow=TRUE
|
||
|
|
bAffectCompositeShadowDirection=TRUE
|
||
|
|
bForceDynamicLight=FALSE
|
||
|
|
UseDirectLightMap=FALSE
|
||
|
|
bPrecomputedLightingIsValid=TRUE
|
||
|
|
|
||
|
|
//All lights default to being able to be composited normally.
|
||
|
|
bAllowCompositingIntoDLE=TRUE
|
||
|
|
|
||
|
|
`if(`__TW_LIGHTING_MODIFICATIONS_) // Custom lighting channel implementation
|
||
|
|
LightingChannels=(Indoor=TRUE,bInitialized=TRUE)
|
||
|
|
`else
|
||
|
|
LightingChannels=(BSP=TRUE,Static=TRUE,Dynamic=TRUE,CompositeDynamic=TRUE,bInitialized=TRUE)
|
||
|
|
`endif
|
||
|
|
|
||
|
|
`if(`__TW_LIGHTING_MODIFICATIONS_)
|
||
|
|
// Use fully dynamic shadowing
|
||
|
|
LightShadowMode=LightShadow_Normal
|
||
|
|
`else
|
||
|
|
// Use cheap modulated shadowing by default
|
||
|
|
LightShadowMode=LightShadow_Modulate
|
||
|
|
`endif
|
||
|
|
|
||
|
|
`if(`__TW_LIGHTING_MODIFICATIONS_)
|
||
|
|
Hardness=1.0
|
||
|
|
`endif
|
||
|
|
|
||
|
|
ModShadowFadeoutExponent=3.0
|
||
|
|
// default to PCF shadow projection
|
||
|
|
ShadowProjectionTechnique=ShadowProjTech_Default
|
||
|
|
ShadowFilterQuality=SFQ_Low
|
||
|
|
|
||
|
|
bRenderLightShafts=false
|
||
|
|
OcclusionDepthRange=20000
|
||
|
|
BloomScale=2
|
||
|
|
BloomThreshold=0
|
||
|
|
BloomScreenBlendThreshold=1
|
||
|
|
BloomTint=(R=255,G=255,B=255)
|
||
|
|
RadialBlurPercent=100
|
||
|
|
OcclusionMaskDarkness=.3
|
||
|
|
|
||
|
|
bUseImageReflectionSpecular=false
|
||
|
|
ReflectionSpecularBrightness=.2
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
|
||
|
|
Notes on all of the various Affecting Classifications
|
||
|
|
|
||
|
|
|
||
|
|
USER SELECTED:
|
||
|
|
settings that god knows what they do
|
||
|
|
|
||
|
|
|
||
|
|
DYNAMIC AFFECTING: // pawns, characters, kactors
|
||
|
|
CastShadows=TRUE
|
||
|
|
CastStaticShadows=FALSE
|
||
|
|
CastDynamicShadows=TRUE
|
||
|
|
bForceDynamicLight=TRUE
|
||
|
|
UseDirectLightMap=FALSE
|
||
|
|
|
||
|
|
LightingChannels: Dynamic
|
||
|
|
|
||
|
|
|
||
|
|
STATIC AFFECTING:
|
||
|
|
CastShadows=TRUE
|
||
|
|
CastStaticShadows=TRUE
|
||
|
|
CastDynamicShadows=FALSE
|
||
|
|
bForceDynamicLight=FALSE
|
||
|
|
UseDirectLightMap=TRUE // For Toggleables this is UseDirectLightMap=FALSE
|
||
|
|
|
||
|
|
LightingChannels: BSP, Static
|
||
|
|
|
||
|
|
|
||
|
|
DYNAMIC AND STATIC AFFECTING:
|
||
|
|
CastShadows=TRUE
|
||
|
|
CastStaticShadows=TRUE
|
||
|
|
CastDynamicShadows=TRUE
|
||
|
|
bForceDynamicLight=FALSE
|
||
|
|
UseDirectLightMap=FALSE
|
||
|
|
|
||
|
|
LightingChannels: BSP, Dynamic, Static
|
||
|
|
|
||
|
|
|
||
|
|
how to light the skybox?
|
||
|
|
|
||
|
|
-> make a user selected affecting light with the skybox channel checked.
|
||
|
|
- if we need to have a special classification for this then we will make it at a later time
|
||
|
|
|
||
|
|
SKYLIGHT:
|
||
|
|
CastShadows=FALSE
|
||
|
|
CastStaticShadows=FALSE
|
||
|
|
CastDynamicShadows=FALSE
|
||
|
|
bForceDynamicLight=FALSE
|
||
|
|
UseDirectLightMap=TRUE
|
||
|
|
|
||
|
|
LightingChannels: SkyLight
|
||
|
|
|
||
|
|
|
||
|
|
how to only light character then?
|
||
|
|
|
||
|
|
-> Character Lighting Channel not at this time as people will mis use it
|
||
|
|
-> for cinematics (where character only lighting could be used) we just use the unamed_#
|
||
|
|
lighting channels!
|
||
|
|
|
||
|
|
|
||
|
|
*/
|
||
|
|
|
||
|
|
|