solved Environment Map Generator HDR inside *.babylon

[Hersir]

Hi, I used EnvironmentMapGenerator to generate hdr texture.

I tried to use it from code it works great but I would like to add it inside babylon file.

{
   customType: "BABYLON.HDRCubeTexture",
   name: "some.babylon.hdr",
   size: 256
}

If I add size I get error Bad HDR Format but without size option I get byte length of Int32Array should be a multiple of 4. (standard hdr works great).

[Nesh108]

@Hersir, I don't have the chance to test it out, try this and report back, as it seems to work for other people:

{

      "reflectionTexture":
      {
        "customType": "BABYLON.HDRCubeTexture",
        "name":"some.babylon.hdr",
        "level":1,
        "hasAlpha":0,
        "coordinatesMode":3,
        "size":512,
        "uOffset":0,
        "vOffset":0,
        "uScale":1,
        "vScale":1,
        "uAng":0,
        "vAng":0,
        "wAng":0,
        "wrapU":true,
        "wrapV":true,
        "coordinatesIndex":0
      }

}

 

[Hersir]

No this doesn't help. Will check code on babylonjs to see where could be difference between adding HDR in code and from babylon file. Also weird that hdr that is not altered by EnvironmentMapGenerator is working properlly

[Nesh108]

Was gonna do that but github was down. Let's see!

[Nesh108]

@Hersir, here is the line (https://github.com/BabylonJS/Babylon.js/blob/master/src/Tools/HDR/babylon.hdr.ts#L87)

 var line = this.readStringLine(uint8array, 0);
            if (line[0] != '#' || line[1] != '?') {
                throw "Bad HDR Format.";
            }

First character should be "#" or the second one "?". Could you upload the HDR file you are trying to use? I think the problem is there and not on babylon side.

[Hersir]

@Nesh108 I found it . If hdr is enhanced by EnvironmentMapGenerator , isBABYLONPreprocessed is needed;

Working version: 

{
   customType: "BABYLON.HDRCubeTexture",
   name: "some.babylon.hdr",
   isBABYLONPreprocessed: true,
   hasAlpha: 0,
   level: 1,
   coordinatesMode: 3
}