World Projection Studio — Prototype Ver.

360 Panoramic · Cube World · Mini World · Fish Eye & Frog Eye. Create, explore, export, and record your worlds.

Created by @ervinf.dsg

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360 Panoramic · HDRI Environment Builder

01 · Source

Import / replace bitmap source

Open HDR / EXR file

Radiance .hdr and OpenEXR .exr are treated as editable linear-radiance sources. HDR import accepts RGBE or XYZE with modern RLE and legacy/raw scanlines. EXR import accepts OpenEXR file-format v2 single-part scanline or one-level tiled RGB/RGBA/Y files using HALF, FLOAT, or UINT channels with NONE, ZIP, ZIPS, or PIZ compression. Files created by newer OpenEXR software remain compatible when they use this standard v2 file format and supported features. Tone mapping is display-only.

Source projection: Equirectangular 360° × 180° only. A 2:1 source is recommended for full spherical coverage.

Flip imported image horizontally

Flip imported image vertically

The 360 pipeline now accepts equirectangular source mapping only. Browser-friendly preview stays lightweight while export uses the original source up to the graphics device limit.

Import an equirectangular 360° image, Radiance HDR, or OpenEXR file.

02 · Spherical Geometry

Heading / yaw0°

Pitch correction0°

Roll / horizon correction0°

The output coordinate system is always 360° × 180°. Pitch/roll corrections rotate the spherical environment; they do not use a 2D perspective warp.

03 · Seam & Poles

Periodic longitude seam correction

Seam correction width3%

Color continuity

Luminance continuity

Zenith / nadir repair35%

Pole repair suppresses non-spherical pinching/tearing near ±90° latitude while preserving the normal equirectangular stretch.

04 · HDR Radiance

Environment exposure0.0 EV

White balance temperature6500 K

White balance tint0

Highlight recovery / expansion20%

Shadow recovery10%

Estimated radiance headroom8 EV

Linear master: preview tone mapping is display-only. Radiance HDR and OpenEXR exports bypass display tone mapping. With ordinary PNG/JPG/WebP input, highlight radiance above the captured LDR range is estimated rather than physically measured.

05 · Preview & Diagnostics

Diagnostic display

Lat / lon grid

Horizon

N / E / S / W

Seam boundary

Zenith / nadir

All diagnostic elements are preview-only and are never embedded into the HDRI master.

06 · Validation & Export

Master resolution

Invalid resolution: 360 Panoramic export is limited to 2K (2048 × 1024).

Output

Radiance .hdr and OpenEXR .exr are linear HDR masters in this offline single-file build. HDR export uses standard Radiance 32-bit RGBE RLE. EXR export uses OpenEXR file-format v2, single-part uncompressed HALF RGB scanlines for maximum portability with both current and newer OpenEXR software. PNG is tone-mapped reference only.

HDRI Pipeline Status

Source interpretation and export information

Geometry: source interpretation and HDR/EXR/PNG export are equirectangular 360° × 180° only, with an exact 2:1 master map.

Radiance: bitmap RGB is linearized before processing; Radiance .hdr and OpenEXR .exr are decoded as scene-linear radiance. ACES-style tone mapping is used only for on-screen preview. HDR exports use RGBE; EXR exports use linear HALF RGB.

Lighting Test: the preview evaluates the environment on chrome and diffuse test spheres plus a neutral ground surface so directionality, reflections, color cast, and headroom can be inspected before export.

Exact 2:1 master · longitude −180° → +180° · latitude +90° → −90°

Preview 2048 × 1024

Import a source imageThe 360 Panoramic pipeline will analyze coverage and build a spherical environment-map preview.

Equirectangular · 360° × 180°

©2026 Ervin Faristiyanto. All rights reserved.

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Export Preview

Review the rendered result before generating the final file.

Rendered export preview