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/// rcp authored schema

DirectionalLightComponent

Exact USDA block introduced by RCP plus fixture-backed contract evidence.

ID: RealityKit.DirectionalLight Baseline: BASE.usda Fixture: Directional Light
schema.json fields.csv matrix.csv fixtures.csv

Quick Read

DirectionalLightComponent has 8 fields. None are written in the baseline — RCP uses sparse authoring, emitting each field only when it differs from the engine default.

Authored as def RealityKitComponent "DirectionalLight" with info:id = "RealityKit.DirectionalLight".

For large components, prefer fixtures.csv for fixture-by-fixture authored rows and matrix.csv for the derived variant matrix.

Introduced USD Block

USDA 
def RealityKitComponent "DirectionalLight"
{
    uniform token info:id = "RealityKit.DirectionalLight"

    def RealityKitStruct "Shadow"
    {
    }
}

Sparse Patch Examples

Each fixture shows the USDA block RCP writes when a single parameter is changed in the inspector.

Color.usda

Changes: color

Changed field: color

USDA 
def RealityKitComponent "DirectionalLight"
{
    float3 color = (1, 1, 0)
    uniform token info:id = "RealityKit.DirectionalLight"

    def RealityKitStruct "Shadow"
    {
    }
}
Intensity.usda

Changes: intensity

Changed field: intensity

USDA 
def RealityKitComponent "DirectionalLight"
{
    uniform token info:id = "RealityKit.DirectionalLight"
    float intensity = 70000

    def RealityKitStruct "Shadow"
    {
    }
}
ShadowsCullingModeDefault.usda

Changes: isEnabled

Changed field: isEnabled

USDA 
def RealityKitComponent "DirectionalLight"
{
    uniform token info:id = "RealityKit.DirectionalLight"

    def RealityKitStruct "Shadow"
    {
        bool isEnabled = 1
    }
}
ShadowsEnabled.usda

Changes: isEnabled

Changed field: isEnabled

USDA 
def RealityKitComponent "DirectionalLight"
{
    uniform token info:id = "RealityKit.DirectionalLight"

    def RealityKitStruct "Shadow"
    {
        bool isEnabled = 1
    }
}
ShadowsCullingModeBack.usda

Changes: cullMode, isEnabled

Changed fields: cullMode, isEnabled

USDA 
def RealityKitComponent "DirectionalLight"
{
    uniform token info:id = "RealityKit.DirectionalLight"

    def RealityKitStruct "Shadow"
    {
        token cullMode = "Back"
        bool isEnabled = 1
    }
}
ShadowsCullingModeFront.usda

Changes: cullMode, isEnabled

Changed fields: cullMode, isEnabled

USDA 
def RealityKitComponent "DirectionalLight"
{
    uniform token info:id = "RealityKit.DirectionalLight"

    def RealityKitStruct "Shadow"
    {
        token cullMode = "Front"
        bool isEnabled = 1
    }
}

Fields

color float3
Baseline
not written — sparse only
Written as
(1, 1, 0)
cullMode token
Baseline
not written — sparse only
Written as
"Back", "Front", "None"
depthBias float
Baseline
not written — sparse only
Written as
2
intensity float
Baseline
not written — sparse only
Written as
70000
isEnabled bool
Baseline
not written — sparse only
Written as
1
orthographicScale float
Baseline
not written — sparse only
Written as
2
projectionType token
Baseline
not written — sparse only
Written as
"Fixed", "Automatic"
zBounds float2
Baseline
not written — sparse only
Written as
(0.02, 20)

Observed Authoring Matrix

13 fixtures × 8 fields
Variant colorcullModedepthBiasintensityisEnabledorthographicScaleprojectionTypezBounds Interpretation
BASE.usda omitted omitted omitted omitted omitted omitted omitted omitted Canonical baseline fixture
Color.usda (1, 1, 0) omitted omitted omitted omitted omitted omitted omitted Changes: color
Intensity.usda omitted omitted omitted 70000 omitted omitted omitted omitted Changes: intensity
ShadowsCullingModeBack.usda omitted "Back" omitted omitted 1 omitted omitted omitted Changes: cullMode, isEnabled
ShadowsCullingModeDefault.usda omitted omitted omitted omitted 1 omitted omitted omitted Changes: isEnabled
ShadowsCullingModeFront.usda omitted "Front" omitted omitted 1 omitted omitted omitted Changes: cullMode, isEnabled
ShadowsCullingModeNone.usda omitted "None" omitted omitted 1 omitted omitted omitted Changes: cullMode, isEnabled
ShadowsDepthBias.usda omitted omitted 2 omitted 1 omitted omitted omitted Changes: depthBias, isEnabled
ShadowsEnabled.usda omitted omitted omitted omitted 1 omitted omitted omitted Changes: isEnabled
ShadowsOrtographicScale.usda omitted omitted omitted omitted 1 2 "Fixed" omitted Changes: isEnabled, orthographicScale, projectionType
ShadowsProjectionTypeAutomatic.usda omitted omitted omitted omitted 1 omitted "Automatic" omitted Changes: isEnabled, projectionType
ShadowsProjectionTypeFixed.usda omitted omitted omitted omitted 1 omitted "Fixed" omitted Changes: isEnabled, projectionType
ShadowsZBounds.usda omitted omitted omitted omitted 1 omitted "Fixed" (0.02, 20) Changes: isEnabled, projectionType, zBounds