Cursor rule

1---
2description: GPU backend guidelines for skia-rs-gpu
3globs: ["crates/skia-rs-gpu/**"]
4alwaysApply: false
5---
6 
7# GPU Backend Guidelines
8 
9## Feature Flags
10 
11```toml
12[features]
13default = ["wgpu-backend"]
14vulkan = ["dep:ash"]
15opengl = ["dep:glow"]
16wgpu-backend = ["dep:wgpu"]
17```
18 
19## Backend Abstraction
20 
21```rust
22pub trait GpuBackend: Send + Sync {
23    fn create_surface(&self, info: &ImageInfo) -> Result<GpuSurface, GpuError>;
24    fn flush(&self);
25}
26```
27 
28## Supported Backends
29 
30- **wgpu**: Cross-platform WebGPU abstraction (default)
31- **Vulkan**: Low-level via `ash` crate
32- **OpenGL**: Via `glow` crate
33- **Metal**: macOS/iOS (planned)
34 
35## Resource Management
36 
37- Use GPU resource pools for frequently allocated objects
38- Implement proper cleanup in `Drop` traits
39- Handle device lost scenarios gracefully
40