ValidationLayers.md

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Hash : 63d9675f
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Date : 2023-01-25T18:07:54

Add documentation for enabling Metal validation layers.

Bug: angleproject:7952
Change-Id: I05b03d8db2b97b23616a7e41860e063eb992dc48
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4195840
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Auto-Submit: Kenneth Russell <kbr@chromium.org>

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Enabling Metal validation layers

To enable Metal’s validation layers in both ANGLE’s standalone test suites as well as in Chromium’s GPU process, per this CL, set the following environment variables:

MTL_DEBUG_LAYER=1
MTL_DEBUG_LAYER_VALIDATE_LOAD_ACTIONS=1
MTL_DEBUG_LAYER_VALIDATE_STORE_ACTIONS=1
MTL_DEBUG_LAYER_VALIDATE_UNRETAINED_RESOURCES=4

Source

src/libANGLE/renderer/metal/doc/ValidationLayers.md

# Enabling Metal validation layers

To enable Metal's validation layers in both ANGLE's standalone test
suites as well as in Chromium's GPU process, per [this
CL](https://chromium-review.googlesource.com/c/chromium/src/+/3584863),
set the following environment variables:

```
MTL_DEBUG_LAYER=1
MTL_DEBUG_LAYER_VALIDATE_LOAD_ACTIONS=1
MTL_DEBUG_LAYER_VALIDATE_STORE_ACTIONS=1
MTL_DEBUG_LAYER_VALIDATE_UNRETAINED_RESOURCES=4
```

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