[FBX] Loading embedded FBX textures the new way

[loebl]

Hello,

I noticed that the loading procedure for embedded textures from FBX changed in the last few weeks.
The old method would give a filename like "*1" which could be used to index into the embedded texture array.

Now I get the relative path to the original image file. As far as I know I would need to search the texture array and compare the paths. It gets a bit complicated as the textures store the absolute paths to the original file.

Just to be on the right track: Is it the new way, to get the tex path from the material, search the embedded textures, strip the folders/path prefixes and compare the file names to find out if the texture is embedded?

[Ceydric2002]

Hi,
I've experienced the same pb, but you can load any embedded texture using "GetEmbeddedTexture" method from the aiScene class.
So basically you get the texture name as before, you will get a complete path name, then you try to get any embedded texture with this read fileName using GetEmbeddedTexture. If it returns an aiTexture pointer, then it's an embedded texture and you can process it as you need.
Hope this helps
Cheers

[loebl]

Alright:
So where I previously wrote (example)

aiMaterial material = scene->mMaterials[index];
aiString texture_file;
material->Get(AI_MATKEY_TEXTURE(aiTextureType_DIFFUSE, 0), texture_file);
if('*' == texture_file.data[0]) {
  //embedded texture, get index from string and access scene->mTextures
} else {
  //regular file, check if it exists and read it
}

I would now write

aiMaterial material = scene->mMaterials[index];
aiString texture_file;
material->Get(AI_MATKEY_TEXTURE(aiTextureType_DIFFUSE, 0), texture_file);
if(auto texture = scene->GetEmbeddedTexture(texture_file.C_Str())) {
  //returned pointer is not null, read texture from memory
} else {
  //regular file, check if it exists and read it
}

I made a quick test and it seems to work. Personally I think that the call to GetEmbeddedTexture should accept an aiString. But I guess this can still change until the next release.

Thanks for the help!

[lucasjinreal]

@loebl Hi, can u share how to read from memory? I wrote from memory but got whole black texture.