[vulkan] allocate descriptors for acceleration structures (#6861)

Author: Vecvec

CHANGELOG.md

@@ -202,6 +202,10 @@ By @ErichDonGubler in [#6456](https://github.com/gfx-rs/wgpu/pull/6456), [#6148]
 - Fix crash when a texture argument is missing. By @aedm in [#6486](https://github.com/gfx-rs/wgpu/pull/6486)
 - Emit an error in constant evaluation, rather than crash, in certain cases where `vecN` constructors have less than N arguments. By @ErichDonGubler in [#6508](https://github.com/gfx-rs/wgpu/pull/6508).
 
+#### Vulkan
+
+- Allocate descriptors for acceleration structures. By @Vecvec in [#6861](https://github.com/gfx-rs/wgpu/pull/6861).
+
 #### D3D12
 
 - Fix no longer showing software rasterizer adapters. By @wumpf in [#6843](https://github.com/gfx-rs/wgpu/pull/6843).

wgpu-hal/src/vulkan/device.rs

@@ -417,6 +417,10 @@ impl
                 vk::DescriptorType::STORAGE_BUFFER_DYNAMIC,
                 descriptor_count.storage_buffer_dynamic,
             ),
+            (
+                vk::DescriptorType::ACCELERATION_STRUCTURE_KHR,
+                descriptor_count.acceleration_structure,
+            ),
         ];
 
         let filtered_counts = unfiltered_counts