[Interest] [qt3d] Loading textures from a custom file format

[Xavier Bigand]

I finally make it works, but I am not sure to do everything correctly.

Firslty I change the way to attach the Texture to the QDiffuseMapMaterial :

QDiffuseMapMaterial*    material = new QDiffuseMapMaterial();
Texture*                diffuseTexture = new Texture();
          // Instancing our custom Texture class to be able to load our
file format instead of retrieving the QAbstractTexture of material

diffuseTexture->setSource(texturePath);
         // Calling our custom file loader

material->setDiffuse(diffuseTexture);



The setSource method load and fill a Qt3DRender::QTextureImageDataPtr that
is directly given at the added TextureImage.

I don't know if it's the right thing to do everything in my implementation
of QAbstractTexture.


I am also curious on how set the anisotropy level.




2016-06-17 16:21 GMT+02:00 Xavier Bigand <flamaros.xavier at gmail.com>:

> I am trying to understand how I have to use QAbstractTexture and
> QAbstractTextureImage to load textures from our custom format.
>
> Our format is pretty simple and consist in a compressed file that contains
> an header with all necessary informations :
>  - texture size
>  - precise texture format (PVRTCI_4bpp_RGBA, ETC1,...)
>  - number of mipmaps
>
> And it's naturally followed by the pixels buffer.
>
> If I understand correctly how it works the best way to manage it is to
> create a Texture class that will load the file and instantiate TextureImage
> corresponding to the number of mipmaps level I have.
>
> Am I right?
>
> --
> Xavier
>



-- 
Xavier
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