DX12 set Features::VERTEX_WRITABLE_STORAGE based on the right FL (#4033)

CHANGELOG.md

@@ -96,6 +96,7 @@ By @Valaphee in [#3402](https://github.com/gfx-rs/wgpu/pull/3402)
 #### DX12
 
 - DX12 doesn't support `Features::POLYGON_MODE_POINT``. By @teoxoy in [#4032](https://github.com/gfx-rs/wgpu/pull/4032).
+- Set `Features::VERTEX_WRITABLE_STORAGE` based on the right feature level. By @teoxoy in [#4033](https://github.com/gfx-rs/wgpu/pull/4033).
 
 ### Documentation
 

wgpu-hal/src/dx12/adapter.rs

@@ -242,7 +242,6 @@ impl super::Adapter {
             | wgt::Features::ADDRESS_MODE_CLAMP_TO_BORDER
             | wgt::Features::ADDRESS_MODE_CLAMP_TO_ZERO
             | wgt::Features::POLYGON_MODE_LINE
-            | wgt::Features::VERTEX_WRITABLE_STORAGE
             | wgt::Features::TEXTURE_ADAPTER_SPECIFIC_FORMAT_FEATURES
             | wgt::Features::TIMESTAMP_QUERY
             | wgt::Features::TIMESTAMP_QUERY_INSIDE_PASSES
@@ -258,6 +257,10 @@ impl super::Adapter {
         // write the results there, and issue a bunch of copy commands.
         //| wgt::Features::PIPELINE_STATISTICS_QUERY
 
+        if max_feature_level as u32 >= d3d12::FeatureLevel::L11_1 as u32 {
+            features |= wgt::Features::VERTEX_WRITABLE_STORAGE;
+        }
+
         features.set(
             wgt::Features::CONSERVATIVE_RASTERIZATION,
             options.ConservativeRasterizationTier