Display image with minifb

help
1

When running the minifb examples with --example image the included images in the resources directory display perfectly. When I copy my own PNG file into that directory and attempt to display it, the result is
Screenshot_2020-02-15_21-59-44
Source image is this:
rerustedlogo
How do I troubleshoot this as I'm sure it's something to do with the nature of the PNG file I'm using.

2

Your image's color space is RGBA not RGB.
So you should change example code to use 4 chunks to decode image.
e.g:

let u32_buffer: Vec<u32> = buf
        .chunks(4) // 3 -> 4
        .map(|v| ((v[0] as u32) << 16) | ((v[1] as u32) << 8) | v[2] as u32)
        .collect();

update_with_buffer treat each pixel as 0RGB and ignores upper 8-bit.
So we can only use RGB channel.

1 Like
3

Brilliant. Thank you so much.

4

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