minor cleanup (#6593)

Author: atlv24

wgpu-hal/src/dx12/adapter.rs

@@ -293,6 +293,7 @@ impl super::Adapter {
             }
         };
 
+        // these should always be available on d3d12
         let mut features = wgt::Features::empty()
             | wgt::Features::DEPTH_CLIP_CONTROL
             | wgt::Features::DEPTH32FLOAT_STENCIL8
@@ -315,7 +316,8 @@ impl super::Adapter {
             | wgt::Features::SHADER_PRIMITIVE_INDEX
             | wgt::Features::RG11B10UFLOAT_RENDERABLE
             | wgt::Features::DUAL_SOURCE_BLENDING
-            | wgt::Features::TEXTURE_FORMAT_NV12;
+            | wgt::Features::TEXTURE_FORMAT_NV12
+            | wgt::Features::FLOAT32_FILTERABLE;
 
         //TODO: in order to expose this, we need to run a compute shader
         // that extract the necessary statistics out of the D3D12 result.
@@ -403,9 +405,6 @@ impl super::Adapter {
             atomic_int64_on_typed_resource_supported,
         );
 
-        // float32-filterable should always be available on d3d12
-        features.set(wgt::Features::FLOAT32_FILTERABLE, true);
-
         // TODO: Determine if IPresentationManager is supported
         let presentation_timer = auxil::dxgi::time::PresentationTimer::new_dxgi();