| # Framebuffer Fetch (experimental) |
| |
| This extension enables support for the [`chromium_experimental_framebuffer_fetch`](../../tint/extensions/chromium_experimental_framebuffer_fetch.md) WGSL extension. |
| |
| The extension is experimental and might change for example to gain new validation rules (with extension struct) in the future. |
| |
| It is available on tiler Metal GPUs. |
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| ## Validation |
| |
| In `Device::CreateRenderPipeline` or `Device::CreateRenderPipelineAsync`: |
| - For each `@color(N) in : T` fragment in: |
| - color target N must exist |
| - color target N's format must match T in both component count and base type |
