Lighting (Lights, Brightness Adjustment, No Shadows)
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This page explains the settings and specifications for lighting items available in R.Design.
Lighting Settings
When you select a lighting item, the following settings are displayed.
Settings Overview
| Setting | Description |
|---|---|
| Intensity | Light strength. Higher values make it brighter. |
| Color Temperature | Light color temperature (Kelvin). Lower values are warmer (orange), higher values are cooler (blue-white). |
| IES Profile | Lighting fixture-specific light distribution pattern. Reproduces how spotlights and downlights spread light. |
| Cast Shadows | Whether to cast shadows. When ON, realistic shadows are projected onto floors and walls. |
| Auto Culling | Automatic ON/OFF distance. Automatically turns off lights far from the camera to improve performance. |
Intensity (Light Strength)
Adjusts the brightness of the lighting.
Verification Required (to check): The following recommended values are not documented in the source and are estimates.
- Indirect/Accent lighting: Low (1-5)
- Main lighting (ceiling lights, etc.): Medium (5-15)
- Very bright lighting (sunlight simulation, etc.): High (20+)
Please provide accurate recommended values.
Color Temperature
Adjusts the color tone of the light. Unit is Kelvin (K).
(to check: The following table is based on general lighting knowledge. Please verify R.Design’s actual Color Temperature range and behavior.)
| Temperature | Color Tone | Use Case |
|---|---|---|
| 2700K | Warm orange | Incandescent bulbs, indirect lighting |
| 3000K | Warm white | Relaxed living room lighting |
| 4000K | Neutral white | Office, kitchen |
| 5000K | Daylight | Work spaces |
| 6500K | Cool blue-white | Fluorescent, monitor light |
Cast Shadows
When ON, furniture and objects cast shadows from the light.
Performance Impact
Enabling Cast Shadows on many lights significantly increases rendering load. Recommended to enable only on essential lights.
Auto Culling (Automatic ON/OFF)
A performance optimization feature that automatically turns off lights far from the camera.
How It Works
- Camera is close: Light is ON (light is rendered)
- Camera is far: Light is OFF (calculation skipped for performance)
Light Max Distance Setting
Adjust the automatic OFF distance in the app settings screen.
IES Profile (Light Distribution Pattern)
IES (Illuminating Engineering Society) profiles are files that reproduce the light distribution data of actual lighting fixtures.
Verification Required (to check): IES Profile detailed specifications (supported formats, import method, available presets, etc.) are not documented in the source.
Troubleshooting
Scene is dark even after adding lights
Check the following:
- Is Intensity too low? → Try increasing the value
- Is camera exposure set to Manual? → Check Camera Advanced Settings
- Is Graphics Quality set to Low/Medium? → Set to High or above in Display Settings
Shadows not appearing
- Is Cast Shadows OFF? → Select the light and check settings
- Is Graphics Quality set to Low? → Shadow calculations are skipped on Low
Related Pages
- Camera Advanced Settings (Exposure) - Exposure settings affect how lighting appears
- Display Quality Settings - Graphics Quality settings
- Render Settings - Settings for high-quality export