lumen-engine-gpu 0.2.2

GPU rendering infrastructure for the Lumen engine.
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# lumen-engine-gpu

`lumen-engine-gpu` contains the lower-level GPU rendering infrastructure used by `lumen-engine`: renderer setup, texture and buffer resources, render/compute program descriptions, pass planning, and backend-specific interop helpers.

This crate is experimental and closely tracks the renderer internals.

## Platform Notes

Lumen's native rendering requires a GPU.

Supported native backends today are:

- Vulkan on Linux.
- Metal on macOS.

The crate uses `wgpu` as its primary GPU abstraction. Vulkan export helpers are only compiled on Linux with the `vulkan` feature. macOS dependencies enable Metal support for the platform target.

## Features

- `metal`: enables explicit Metal backend support through `wgpu`/`wgpu-hal`.
- `vulkan`: enables Vulkan backend support and Vulkan export helpers.

## Development

```bash
cargo check -p lumen-engine-gpu
cargo check -p lumen-engine-gpu --features vulkan
cargo test -p lumen-engine-gpu
```