Give option to chose backend renderer

[rustylabs]

And I have a very simple project:

use blue_engine::{header::{Engine, Renderer, ObjectStorage, /*ObjectSettings,*/ WindowDescriptor, PowerPreference}, Window};

fn main()
{
    println!("Hello, world!");

    let mut engine = Engine::new(); // This is where it screws up
}

As soon as I add this line let mut engine = Engine::new(); it "panics" with this error message:

Hello, world!
[2023-05-07T10:19:28Z ERROR wgpu::backend::direct] Handling wgpu errors as fatal by default
thread 'main' panicked at 'wgpu error: Validation Error

Caused by:
    In Device::create_texture
      note: label = `Default Texture`
    Downlevel flags VIEW_FORMATS are required but not supported on the device.
This is not an invalid use of WebGPU: the underlying API or device does not support enough features to be a fully compliant implementation. A subset of the features can still be used. If you are running this program on native and not in a browser and wish to work around this issue, call Adapter::downlevel_properties or Device::downlevel_properties to get a listing of the features the current platform supports.

As indicated by these folks

WebGPU added requirement for being able to specify the view format and wgpu checks against that now. Blue engine probably had an older version of wgpu before that didn't have this requirement yet.
That said, the only place where this feature isn't supported is on wgpu's GLES & WebGL backend. On linux you should always use Vulkan whenever possible.
In any case, this would be a bug with blue engine for not picking the correct backend and/or requiring this feature when they also want to suport GLES/WebGL (?, don't know blue engine at all)

Please give option to chose backend renderer for the user!

[ElhamAryanpur]

Can you try the new version? try running an example

[rustylabs]

Hey man what's the new latest version that I need to put in the cargo.toml file?

…

-------- Original Message --------

On 16 May 2023, 5:16 am, Elham Aryanpur wrote: Can you try the new version? try running an example — Reply to this email directly, [view it on GitHub](#27 (comment)), or [unsubscribe](https://github.com/notifications/unsubscribe-auth/AZDKAUAER6CCCT6IAAMQXYDXGJ6IJANCNFSM6AAAAAAXZZ622Y). You are receiving this because you authored the thread.Message ID: ***@***.***>

[ElhamAryanpur]

use the git for now, and I have also added backends option to WindowDescriptor where you can select a specific backend for our needs. Try that now

[ElhamAryanpur]

fixed