SkyboxLab

Generate AI-powered 360° skyboxes from text prompts, directly inside the Unity Editor. No accounts, no API keys — just your Asset Store invoice number.

Unity 2020.3+ 50 Gens / Month 8K Output BiRP / URP / HDRP

🏠 Overview

Type a prompt, click generate, get a production-ready skybox in under a minute.

SkyboxLab is a Unity Editor plugin that connects to the SkyboxLab cloud backend to generate high-quality, AI-generated 360° panoramic skyboxes from simple text descriptions. The result is downloaded, imported with correct texture settings, turned into a Skybox/Panoramic material, and optionally applied to your scene — all without ever leaving Unity.

💡

No accounts, no API keys. SkyboxLab is activated with your Unity Asset Store invoice number. No separate website registration, no API keys to manage. Just enter your invoice, verify, and start generating.

Generation Flow

✍️ Type prompt → 🚀 Send to cloud → ⏳ Poll progress → 🔄 Seam fix + upscale → 📦 Download PNG → 🌎 Apply to scene

⚡ Quick Start

Get up and running in under 2 minutes.

Import the package
Import SkyboxLab into your Unity project via the Asset Store. All files live under Assets/SkyboxLab/.

Open the plugin
Go to Window → SkyboxLab → Skybox Generator. A welcome popup will guide you on first open.

Enter your invoice
Paste your Invoice Number from the Asset Store purchase email (starts with IN) and click Verify Invoice.

Write a prompt
Type a description, e.g. "Vast savanna at golden hour, acacia trees, dramatic orange sky"

Generate!
Optionally pick a Style preset, then click Generate Skybox. In 30–90 seconds, your skybox is imported and applied to the scene.

ⓘ

No dependencies. SkyboxLab uses only built-in Unity APIs (UnityWebRequest, EditorWindow, TextureImporter, AssetDatabase) and the built-in Skybox/Panoramic shader. No packages to install.

📄 Invoice Activation

Your Asset Store invoice number is your license key.

SkyboxLab uses your Unity Asset Store invoice number to verify your purchase and manage your generation quota. No separate account, API key, or registration is needed.

How to find your invoice number

Check the purchase confirmation email from the Unity Asset Store. The invoice number starts with IN followed by 8–18 characters (e.g. IN0123456789AB).
You can also find it in your Unity Asset Store order history.

Activating the plugin

Open the SkyboxLab window (Window → SkyboxLab → Skybox Generator).

Enter your invoice number in the Invoice Number field.

Click Verify Invoice.

On success, you'll see a green message: "✓ Verified — X of Y generations remaining this month".

💡

Automatic verification. When you enter a valid invoice number for the first time, the server automatically verifies your purchase against the Unity Asset Store and activates your license. No manual approval or waiting required.

Invoice section controls

Control	Description
Invoice Number	Your Unity Asset Store invoice number, starting with `IN`. Find it in your purchase email or order history.
Verify Invoice	Validates your invoice with the SkyboxLab server and displays remaining generations.

Activation

Paste your Unity Asset Store invoice number into the field at the top of the SkyboxLab window and click Verify Invoice. Your invoice activates the asset across all your installations — there's no machine-specific binding.

Your purchase includes 50 generations every month. Cached prompts return instantly without using your allowance.

If you need to clear a stored invoice (for example, after a typo), use Window → SkyboxLab → Forget Invoice.

📊 Monthly Quota

50 generations every month, included with your purchase.

Your purchase includes 50 generations every month. The allowance is issued every month for as long as you own the asset.

How the allowance works

Each non-cached generation uses one of your monthly generations.
Unused generations do not accumulate or carry over.
Cache hits are free. If you generate the exact same prompt with the same settings, the server returns the cached result instantly without using one of your monthly generations.

💡

Quota display. After verifying your invoice, the plugin shows: "✓ Verified — 48 of 50 generations remaining this month". This updates in real-time as you generate.

🔃 Plugin Updates

Update from the Unity Asset Store at any time for the latest features.

New versions of SkyboxLab are released through the Unity Asset Store. You can update at any time from your order history or from the Package Manager.

🖼 Editor Window

Your single control panel for everything.

Open it via Window → SkyboxLab → Skybox Generator. The window is resizable and divided into these sections from top to bottom:

Section	Description
Invoice	Invoice number input, verification status, and remaining-generations display
Prompt	Main text prompt input area
Style	Collapsible style preset picker (12 presets)
Negative Prompt	Collapsible field for things to avoid in the generation
Options	Quality (with optional 4× upscale), diffusion steps, and CFG guidance controls
Import Settings	Auto-apply skybox and ambient lighting update toggles
Generate	The generate button, progress bar, and cancel button
Recent Skyboxes	Thumbnail gallery of all previously generated skyboxes

All settings are persisted between Unity sessions via EditorPrefs.

💬 Prompt Guide

The prompt is the most important factor in the quality of your skybox.

What works well

Open outdoor landscapes with visible sky and horizon
Descriptive lighting conditions (golden hour, overcast, night, etc.)
Atmospheric details (fog, clouds, aurora, stars)
Specifying a mood or time of day

Example prompts

Prompt	Good For
"Vast savanna at golden hour, acacia trees, dramatic orange sky"	Warm outdoor scene
"Arctic tundra at night, blazing aurora borealis, frozen lake"	Night / sci-fi scene
"Ancient temple ruins in jungle clearing, shafts of golden light"	Adventure / RPG scene
"Volcanic island at dusk, lava flows, fiery red sky"	Dramatic action scene
"Calm ocean at sunrise, pastel pink and blue sky, gentle waves"	Relaxing / casual game
"Deep space nebula, swirling purple and blue gas clouds, distant stars"	Sci-fi / space game

What to avoid

Fully enclosed spaces (caves, room interiors) — skyboxes are meant to be open environments
Very specific complex objects (a particular car model, a named character)
Extremely long prompts — keep it focused on the scene description

Negative prompt

The negative prompt tells the AI what to avoid. A sensible default is pre-filled:

blurry, distorted, watermark, text, logo, seam, people, faces, hands,
low quality, jpeg artifacts, overexposed, underexposed, ugly, deformed

You can expand the negative prompt section to customise it for each generation.

💡

Combining styles with prompts. Styles work best when your prompt complements them. For example, pairing Cyberpunk with "Rain-soaked neon cityscape at midnight" reinforces the style, while pairing it with "Peaceful countryside meadow" creates a conflicting mix.

🎨 Style Presets

12 built-in styles that guide the AI toward a specific visual look.

Select one from the collapsible style picker below the prompt field. Only one style can be active at a time; clicking the active style again deselects it. Your typed prompt is never modified — the style keywords are appended only when the generation request is sent.

Style	Keywords Appended
Photoreal	photorealistic, hyperdetailed, dramatic lighting, sharp focus, 8k
Anime	anime style, cel shaded, vibrant colors, Studio Ghibli inspired
Digital Art	digital painting, concept art, matte painting, artstation trending
Cyberpunk	cyberpunk, neon lights, rain-soaked streets, futuristic city
Fantasy	epic fantasy, volumetric god rays, dramatic storm clouds, magical
Sci-Fi	hard sci-fi, space station, deep space nebula, stars
Painterly	impressionist oil painting, painterly brushstrokes, soft light
Watercolor	watercolor illustration, soft washes, delicate details, paper texture
Horror	dark horror atmosphere, ominous fog, eerie lighting, desolate
Cartoon	cartoon style, bold outlines, flat colors, stylized
Retro	retro 1970s aesthetic, warm film grain, faded colors, nostalgic
Sky Only	sky dome only, no ground objects, spectacular cloudscape, open sky

⚙ Generation Options

Fine-tune quality, speed, and AI behavior.

Option	Values	Description
8K Texture	On Default / Off	Runs a 4× AI upscale pass after generation, producing 8192×4096 output. Takes longer but significantly sharper. Recommended for production and VR.
Steps	`20` (fast) / `28` (default) / `40` (quality)	Number of diffusion sampling steps. More steps = more detail and coherence. 28 is the best balance for most prompts.
Guidance	`1.0` – `15.0` (default `7.5`)	CFG scale — how closely the AI follows your prompt. Higher = more literal but can oversaturate. Lower = more creative freedom.

💡

All generations are included in your purchase. There is no per-generation cost. Both standard and 8K upscaled generations use one of your monthly generations.

📦 Import Settings

Control what happens after a skybox is downloaded.

Setting	Default	Description
Auto-apply to scene skybox	On	Automatically assigns the generated material to `RenderSettings.skybox` after import.
Update ambient lighting (GI)	On	Calls `DynamicGI.UpdateEnvironment()` so ambient lighting and reflections match the new sky.

All generated files are saved to Assets/SkyboxLab/Generated/.

📷 Skybox Gallery

Browse and quickly switch between all your generated skyboxes.

The Recent Skyboxes section at the bottom of the window shows a thumbnail gallery of every skybox you have generated. It automatically scans Assets/SkyboxLab/Generated/ when the window opens.

Feature	Details
Layout	3-column grid of thumbnail tiles, scrollable
Sorting	Newest first (by file creation time)
Hover	White border highlight + Apply and Ping overlay buttons
Apply	Applies that skybox to `RenderSettings.skybox` and updates lighting
Ping	Selects and highlights the PNG texture in the Project window
Tooltip	Shows the full original prompt text on hover
Empty state	Shows "No skyboxes yet — generate your first one above"

💡

Quick skybox switching. Use the gallery to A/B compare different skyboxes in your scene. Click any thumbnail to instantly apply it. Great for testing which sky works best for your project's mood and lighting.

💾 Texture Import Settings

Automatically configured for optimal panoramic skybox quality.

Setting	Value	Reason
`textureType`	`Default`	Standard 2D texture
`npotScale`	`None`	Keep original 2:1 aspect ratio
`mipmapEnabled`	`false`	Prevents visible seam line on the skybox sphere
`wrapMode`	`Repeat`	Seamless horizontal wrapping for 360° panorama
`filterMode`	`Bilinear`	Smooth filtering without excessive blur
`maxTextureSize`	`8192`	Allows full resolution import without downscaling
`textureCompression`	`Uncompressed`	Maximum quality, no compression artifacts

⚠

Do not re-import manually. If you manually re-import a generated texture, keep Generate Mip Maps unchecked and Wrap Mode set to Repeat. Changing these causes visible seam lines.

🌈 Material Configuration

Generated materials use Unity's built-in Skybox/Panoramic shader.

Property	Value	Meaning
`_MainTex`	(generated texture)	The equirectangular panorama
`_Mapping`	`1`	Latitude Longitude Layout (equirectangular)
`_ImageType`	`0`	360 degrees (full sphere)
`_MirrorOnBack`	`0`	No mirroring
`_Exposure`	`1.0`	Default brightness
`_Rotation`	`0`	No rotation offset

ⓘ

Adjusting after import. You can freely modify the material after import. Select it in the Project window and adjust Exposure or Rotation in the Inspector to fine-tune brightness and orientation.

🛠 Architecture

Six editor-only scripts, zero runtime overhead.

Script	Type	Responsibility
`SkyboxLabWindow.cs`	`EditorWindow`	Main UI. Draws all controls, manages state, persists settings via `EditorPrefs`, orchestrates the verify → generate → poll → import flow, and displays the gallery.
`SkyboxLabAPI.cs`	`static class`	HTTP client. Handles `/prod/verify`, `/prod/status`, and `/prod/generate`, plus async polling. Sends `X-Client-Version` (and `X-Invoice` on downloads) headers. Uses `EditorApplication.update` for async polling.
`SkyboxLabImporter.cs`	`static class`	Downloads the PNG with authentication headers, saves to disk, configures `TextureImporter`, creates `Skybox/Panoramic` material, and optionally applies to scene.
`SkyboxLabError.cs`	`static class`	Error code constants and user-friendly message mapping.
`SkyboxLabWelcome.cs`	`EditorWindow`	One-time welcome popup shown on first open after import.

ⓘ

Editor-only — zero runtime overhead. All scripts are inside an Editor/ folder, which means they are never included in your game build. Zero impact on shipped game size or performance.

📁 File Structure

Everything lives under Assets/SkyboxLab/.

Assets/
  SkyboxLab/
    Editor/
      SkyboxLabWindow.cs — Editor window UI & generation flow
      SkyboxLabAPI.cs — HTTP client (invoice auth, async polling)
      SkyboxLabImporter.cs — Download, texture import, material creation
      SkyboxLabError.cs — Error code mapping
      SkyboxLabWelcome.cs — First-open welcome popup
      SkyboxLabIcon-transparent.png — Plugin branding icon
    Documentation/
      Documentation.html — This file
    Generated/ — Output folder for skybox PNGs and materials
      skybox_20260326_143022_vast_savanna_at_golden_hour.png
      skybox_20260326_143022_vast_savanna_at_golden_hour_Mat.mat

Generated file naming convention

skybox_{yyyyMMdd_HHmmss}_{sanitised_prompt_slug}.png
skybox_{yyyyMMdd_HHmmss}_{sanitised_prompt_slug}_Mat.mat

The prompt slug is: lowercase, special characters stripped, spaces replaced with underscores, truncated to 40 characters.

🎬 HDRP Projects

HDRP requires one extra manual step.

⚠

HDRP requires manual setup. In HDRP, RenderSettings.skybox is not used for rendering. The auto-apply feature will still set it, but it won't be visible. Instead:

Generate and import the skybox normally using SkyboxLab.
In your scene's Volume, add a Visual Environment override and set Sky Type to HDRI Sky.
Add an HDRI Sky override and assign the generated PNG texture to the texture slot.

💡

URP works out of the box. If you are using URP (Universal Render Pipeline), the auto-apply feature works as expected. No extra setup needed.

💡 Troubleshooting

Common issues and how to fix them.

📄 "Verify Invoice" shows an error

"Invoice numbers start with IN..." — Make sure you're entering your invoice number (starts with IN), not the order number. Check your purchase confirmation email.
"This invoice number isn't recognized" — Unity invoices can take 2–4 hours to become available after purchase. Try again later.
"This invoice has been refunded" — The purchase has been refunded. The license is no longer valid.

📊 "No generations remaining this month"

You've used all 50 generations from this month's allowance. Your next allowance arrives at the start of next month.

⏳ Generation times out after 10 minutes

The backend may be under heavy load. Try again in a few minutes.
Check your network connection — the plugin polls the server every 3 seconds.

🔄 Skybox has a visible seam line

SkyboxLab's pipeline automatically applies a circular-shift seam fix with AI inpainting. If you still see a faint line:
Verify the texture's Generate Mip Maps is unchecked in the Inspector.
Ensure Wrap Mode is set to Repeat.

👁 Skybox looks low-resolution

Enable the 8K Texture toggle for 8192×4096 output.
Check the texture's Max Size in the Inspector — should be 8192.
Ensure Compression is set to None (Uncompressed).

🎬 Skybox not visible in HDRP

See the HDRP section. You need to manually assign the texture to an HDRI Sky volume override.

⚠ Compilation errors after import

Ensure all .cs files are inside the Editor/ folder.
If you see namespace errors, confirm you are on Unity 2020.3 LTS or newer.

❓ FAQ

Frequently asked questions.

Does this plugin affect my game's build size or runtime performance?

No. All plugin scripts are in an Editor/ folder and are excluded from builds automatically. The generated PNG textures and materials are included (like any other asset), but the plugin code has zero runtime footprint.

Can I use the generated skyboxes commercially?

Yes. Skyboxes generated through SkyboxLab are yours to use in any project, commercial or otherwise.

Can I use this plugin offline?

The plugin requires an internet connection to generate new skyboxes (AI runs on cloud GPUs). However, previously generated skyboxes in Assets/SkyboxLab/Generated/ are standard Unity assets and work fully offline.

How large are the generated textures?

With 8K Texture enabled (default), output is 8192×4096 pixels. File sizes are typically 2–20 MB per PNG. With 8K disabled, the output is at the model's native resolution.

Can I use one invoice on multiple machines?

Yes. Your invoice activates the asset across all your installations — there's no machine-specific binding.

Do unused generations carry over?

No. Unused generations do not accumulate. Your allowance is issued every month for as long as you own the asset.

Does the same prompt always produce the same result?

If all settings (prompt, style, steps, guidance, upscale) are identical, the server may return a cached result instantly without using one of your monthly generations. Otherwise, the AI produces a new unique image each time.

Can I use this with Addressables or Asset Bundles?

Yes. The generated PNG textures and materials are standard Unity assets. You can include them in Addressable groups or Asset Bundles like any other texture or material.

What happens if I delete a generated skybox file?

It will be removed from the gallery on the next window refresh. There is no way to recover it — you would need to generate a new one with a similar prompt.

📬 Support

Need help? We're here for you.

📧

Get in Touch

If you run into any issues, have feature requests, or need help integrating SkyboxLab into your project, don't hesitate to reach out.

✉ ragendom@gmail.com

We typically respond within 24–48 hours.

💬 Before Contacting

Check the Troubleshooting section
Check the FAQ section
Verify your invoice is correct (starts with IN)
Include your Unity version and render pipeline

📋 Helpful Info to Include

Unity version & render pipeline (BiRP/URP/HDRP)
SkyboxLab version (currently v1.0)
Console error messages (lines starting with [SkyboxLab])
Steps to reproduce the issue

⭐

Enjoying SkyboxLab? A review on the Unity Asset Store helps other developers discover the plugin and helps us keep improving it. Thank you!

SkyboxLab v1.0 · AI-Powered Skybox Generation for Unity

Support: ragendom@gmail.com