Quakespasm Skybox Creator

Input

No file

Drop a true 360° panorama JPG, PNG, WebP, AVIF, or Radiance HDR

Input requirements Use a true 360° equirectangular panorama with a 2:1 aspect ratio, seamless left/right edges, and correctly formed zenith and nadir poles. A standard flat 2:1 image will not convert correctly. For 1024×1024 faces, use a 4096×2048 source (recommended), 8192×4096 for higher quality, or 2048×1024 as the practical minimum.

Sky name Face size Format Sampling

Yaw

Pitch

Roll

Exposure

JPEG quality

HDR curve

HDR white

Outputgfx/env/customskyrt.png

Yaw0 deg

Pitch0 deg

Roll0 deg

Exposure0.0 stops

Quality92

Load a panorama to begin.

Quakespasm setup

Put the exported files in your gamedir under gfx/env/.
Use the name without the face suffix or extension, for example sky sample_sky.
Maps can also set worldspawn sky, skyname, or qlsky.
Use the console command sky sample_sky to test or override the current skybox.
PNG, JPEG, and TGA exports use the same rt bk lf ft up dn suffixes.

In-Game Preview

drag to look

Panorama

horizon + bright point

Faces

seams unchecked

Load a panorama or sample sky to render the cube faces.