Allow VK_INSTANCE_LAYERS to order implicit layers#1755
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charles-lunarg merged 1 commit intoAug 25, 2025
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Implicit layers previously were always loaded closest to the application regardless of whether they appeared in any environment variables. This commit allows users to order implicit layers using VK_INSTANCE_LAYERS, so that if a user has put an implicit layer in that environment variable, that layer will be loaded respecting its order relative to other layers in the env-var. If VK_INSTANCE_LAYERS contains just a single implicit layer, this will cause that implicit layer to be loaded after all other implicit layers, and before any app-enabled layers. This commit also updates the documentation to reflect the un-deprecated nature of VK_INSTANCE_LAYERS as well as other fixes related to this change.
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CI Vulkan-Loader build # 3146 running. |
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CI Vulkan-Loader build # 3146 passed. |
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Going ahead with the merge as no issues were found from anyone using it. And after a review, I am content with the state of the changes. |
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Implicit layers previously were always loaded closest to the application regardless of whether they appeared in any environment variables. This commit allows users to order implicit layers using VK_INSTANCE_LAYERS, so that if a user has put an implicit layer in that environment variable, that layer will be loaded respecting its order relative to other layers in the env-var. If VK_INSTANCE_LAYERS contains just a single implicit layer, this will cause that implicit layer to be loaded after all other implicit layers, and before any app-enabled layers.
This commit also updates the documentation to reflect the un-deprecated nature of VK_INSTANCE_LAYERS as well as other fixes related to this change.