1use anyhow::Context as _;
 2use blade_graphics as gpu;
 3use std::sync::Arc;
 4use util::ResultExt;
 5
 6#[cfg_attr(target_os = "macos", derive(Clone))]
 7pub struct BladeContext {
 8    pub(super) gpu: Arc<gpu::Context>,
 9}
10
11impl BladeContext {
12    pub fn new() -> anyhow::Result<Self> {
13        let device_id_forced = match std::env::var("ZED_DEVICE_ID") {
14            Ok(val) => val
15                .parse()
16                .context("Failed to parse device ID from `ZED_DEVICE_ID` environment variable")
17                .log_err(),
18            Err(std::env::VarError::NotPresent) => None,
19            err => {
20                err.context("Failed to read value of `ZED_DEVICE_ID` environment variable")
21                    .log_err();
22                None
23            }
24        };
25        let gpu = Arc::new(
26            unsafe {
27                gpu::Context::init(gpu::ContextDesc {
28                    presentation: true,
29                    validation: false,
30                    device_id: device_id_forced.unwrap_or(0),
31                    ..Default::default()
32                })
33            }
34            .map_err(|e| anyhow::anyhow!("{:?}", e))?,
35        );
36        Ok(Self { gpu })
37    }
38}