Some PNG files display red areas in part of the image

[64kramsystem]

If I open some images, either via Fyrox (in a game) or in Fyroxed, red areas are displayed as part of the image. Such corruption only displays in Fyrox; other programs/libraries (Eye of MATE, GIMP, Github web interface, the PyGame library) don't have this problem.

This is an example:

This is how the image looks when opened on Gimp:

This is a link to the image file.

[mrDIMAS]

That's a bug in image compression, you can disable it using

 engine
            .resource_manager
            .state()
            .containers_mut()
            .textures
            .set_default_import_options(
                TextureImportOptions::default().with_compression(CompressionOptions::NoCompression),
            );

Add these lines right after you obtained a ref to engine (if you're using Framework, then in the beginning of on_init)

[64kramsystem]

Hello!

I still experience the issue. I've put the command at the very top of GameState#init:

impl GameState for GameGlobal {
    fn init(engine: &mut Engine) -> Self {
        // As of Fyrox v0.26, there's a bug in the images compression.
        // See https://github.com/FyroxEngine/Fyrox/issues/320.
        //
        engine
            .resource_manager
            .state()
            .containers_mut()
            .textures
            .set_default_import_options(
                TextureImportOptions::default().with_compression(CompressionOptions::NoCompression),
            );

this runs before any texture is loaded.

I also notice that those images flicker, I don't know if it's related.

[64kramsystem]

If I convert the image(s) to GIF, I don't experience the problem (even without workaround).

[mrDIMAS]

Ok, maybe I shouldn't check bugs like this early in the morning 😄 . It could be relate to image loader, it is based on image crate. I'll check it.

[64kramsystem]

I'm also having other problems (possibly related) with transparency. This is a sample of how a PNG with multiple levels of transparency renders:

What is black should be transparent, and what is green inside the square, should be much darker.

PNG here:

[mrDIMAS]

Some of your images are in LuminanceAlpha8 format which is interpreted by the engine as RedGreen8 which results in R, G, R, G color when fetching the texture.

[64kramsystem]

Some of your images are in LuminanceAlpha8 format which is interpreted by the engine as RedGreen8 which results in R, G, R, G color when fetching the texture.

Is this considered an issue with the engine (I don't have the technical knowledge)? With all the tools i've tried (Firefox, GNOME default image viewer, GIMP, Feh), the example above displays the transparency correctly.

[64kramsystem]

Oh wow. Thanks! 🙏