# WSG - WGPU Simple Graphics Library

## Project Type
Rust workspace (2024 edition) wrapping [wgpu](https://github.com/gfx-rs/wgpu) for simple 3D drawing operations.

## Workspace Structure
```
Cargo.toml          # workspace root — no dependencies here
lib/Cargo.toml      # wsg-lib crate: wgpu 30.0.0, winit 0.30
examples/Cargo.toml # depends on wsg-lib via path reference
lib/lib.rs          # lib entry point
lib/context.rs      # Context type (aggregates wgpu objects: Instance, Surface, Adapter, Device, Queue)
lib/renderer.rs     # renderer implementation
examples/src/main.rs # example binary
```

**Key convention**: `wsg-lib` is referenced from `examples/` via relative path (`path = "../lib"`). Do not publish this to crates.io as-is — it uses a local path dependency.

## Essential Commands
| Action | Command |
|--------|---------|
| Build everything | `cargo build --workspace` |
| Run examples | `cargo run -p examples` |
| Test | `cargo test --workspace` |
| Check | `cargo check --workspace` |
| Format | `cargo fmt --all` |

No custom scripts or linting tooling beyond standard Cargo conventions.

## Architecture Overview
The library's purpose is to abstract the five core wgpu objects into a single **Context**:

- **Instance** — GPU backend selection (Vulkan/Metal/DX12)
- **Surface** — window rendering surface (via winit)
- **Adapter** — physical/logical GPU device
- **Device** — buffer/texture/pipeline creation
- **Queue** — command submission

WGPU doesn't have a native "Context" object — this type groups them together for a simpler user API. See README.md for the French documentation of each component.

## Gotchas
- Rust 2024 edition is used. Ensure your Rust toolchain supports it (`rustup update`).
- wgpu 30.0.0 is pinned in `lib/Cargo.toml`. The comment says "check the latest version" — verify compatibility before upgrading.
- No feature flags, no dev-dependencies, no tests yet. Adding any requires updating both `Cargo.toml` files if the dependency spans crates.
- The workspace has no `[workspace.dependencies]` section. Dependencies are declared per-crate rather than centrally.