You can use HDRCubeTexture to load an HDR file and pre-filter it, then use EnvironmentTextureTools.CreateEnvTextureAsync to convert to a .env file.
See this thread and PG.
You can use HDRCubeTexture to load an HDR file and pre-filter it, then use EnvironmentTextureTools.CreateEnvTextureAsync to convert to a .env file.
See this thread and PG.