How do I either compress existing .env into low res or restore an hdr from it?

vlayd16 · December 25, 2024, 9:16am

Hi Team,

I hope you’re doing well. Unfortunately, I’ve lost access to the original .hdr file for my .env environment. Since then, the introduction of WebP environments and low-resolution options from Babylon IBL has caught my attention.

Currently, the size of my .env file is quite large, and I’m exploring ways to compress it into a low-resolution version or, ideally, convert it to WebP. Alternatively, if there’s a way to restore the .hdr file, I’d love to know so I can export these versions directly from the sandbox.

Looking forward to your guidance.

Thank you!

Evgeni_Popov · December 26, 2024, 12:05pm

As far as I know, it’s not possible to recover the original data from an .env file, because the data in an .env file has been pre-filtered and it’s not possible to “de-filter” it.

What you can do is load your existing .env file, then save a new one with new parameters. Here’s how the inspector does it:

github.com

BabylonJS/Babylon.js/blob/master/packages/dev/inspector/src/components/actionTabs/tabs/toolsTabComponent.tsx#L308-L322


      
          createEnvTexture() {

              const scene = this.props.scene;

              EnvironmentTextureTools.CreateEnvTextureAsync(scene.environmentTexture as CubeTexture, {

                  imageType: envExportImageTypes[this._envOptions.imageTypeIndex].imageType,

                  imageQuality: this._envOptions.imageQuality,

              })

                  .then((buffer: ArrayBuffer) => {

                      const blob = new Blob([buffer], { type: "octet/stream" });

                      Tools.Download(blob, "environment.env");

                  })

                  .catch((error: any) => {

                      Logger.Error(error);

                      alert(error);

                  });

          }

vlayd16 · December 28, 2024, 8:19am

Thank you @Evgeni_Popov worked great.
Have a happy holidays!

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How do I either compress existing .env into low res or restore an hdr from it?

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