Windows OS - Issue with scaling factor

[Nazariglez]

From Olaroll on discord:

So in windows 10, if my scaling is set to 125%, I get an ugly jagged line like in the screenshots I posted. (other scaling factors probably have the issue as well)
Now it seems likely you wouldn't be able to just magically fix this, cause you can't just create detail in the image out of thin air.
I was hoping that the WindowConfig high_dpi option would help with this case, but it seems to do nothing.
Essentially I'd just like to have a window with a resolution that is unaffected by the system's high-dpi scaling, so that my image pixels nicely align with the screen pixels.

Test case: https://gist.github.com/Olaroll/89052bb9b8820cd3225f8a1f4cf611e6

[Olaroll]

Oh, right. Forgot to make an issue for it 😅

[Nazariglez]

use notan::app::Color;
use notan::AppState;
use notan::draw::{CreateDraw, DrawConfig, DrawImages};
use notan::prelude::{Graphics, Texture, WindowConfig};

const WIDTH: i32 = 200;
const HEIGHT: i32 = 200;
const SLOPE: f32 = 0.83; // Try adjusting this for different aliasing patterns

#[derive(AppState)]
struct Program {
    texture: Texture,
}

fn main() -> Result<(), String> {
    let win = WindowConfig::new()
        .vsync(true)
        .high_dpi(false) // Doesn't make a difference?
        .resizable(false)
        .size(WIDTH, HEIGHT);

    notan::init_with(|gfx: &mut Graphics| {
        Program { texture: make_texture(gfx) }
    })
        .add_config(win)
        .add_config(DrawConfig)
        .draw(|gfx: &mut Graphics, this: &mut Program| {
            let mut draw = gfx.create_draw();
            draw.image(&this.texture);
            gfx.render(&draw);
        })
        .build()
}

fn make_texture(gfx: &mut Graphics) -> Texture {
    let mut data = vec![0; (WIDTH * HEIGHT * 4) as usize];
    let color = Color::WHITE.rgba_u8();

    let mut x_max = 0.0;
    for y in 0..HEIGHT {
        for x in 0..(x_max as i32).min(WIDTH) {
            let i = (y * WIDTH + x) as usize * 4;
            data[i..i+4].copy_from_slice(&color);
        }
        x_max += SLOPE;
    }

    gfx.create_texture()
        .from_bytes(&data, WIDTH, HEIGHT)
        .build()
        .unwrap()
}

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This issue is stale because it has been open for 1 year with no activity.

[github-actions[bot]]

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