Fix Subgroup Ops on VK 1.2 Device (gfx-rs#5624)

Author: cwfitzgerald

CHANGELOG.md

@@ -62,8 +62,6 @@ for message in compilation_info
 
 By @stefnotch in [#5410](https://github.com/gfx-rs/wgpu/pull/5410)
 
-
-
 ### New features
 
 #### General
@@ -78,6 +76,10 @@ By @stefnotch in [#5410](https://github.com/gfx-rs/wgpu/pull/5410)
 
 ### Bug Fixes
 
+#### Vulkan
+
+- Fix enablement of subgroup ops extension on Vulkan devices that don't support Vulkan 1.3. By @cwfitzgerald in [#5624](https://github.com/gfx-rs/wgpu/pull/5624).
+
 #### GLES / OpenGL
 
 -  Fix regression on OpenGL (EGL) where non-sRGB still used sRGB [#5642](https://github.com/gfx-rs/wgpu/pull/5642)

wgpu-hal/src/vulkan/adapter.rs

@@ -1443,9 +1443,6 @@ impl super::Instance {
                 }),
             image_format_list: phd_capabilities.device_api_version >= vk::API_VERSION_1_2
                 || phd_capabilities.supports_extension(khr::image_format_list::NAME),
-            subgroup_size_control: phd_features
-                .subgroup_size_control
-                .map_or(false, |ext| ext.subgroup_size_control == vk::TRUE),
         };
         let capabilities = crate::Capabilities {
             limits: phd_capabilities.to_wgpu_limits(),
@@ -1762,6 +1759,7 @@ impl super::Adapter {
             vendor_id: self.phd_capabilities.properties.vendor_id,
             timestamp_period: self.phd_capabilities.properties.limits.timestamp_period,
             private_caps: self.private_caps.clone(),
+            features,
             workarounds: self.workarounds,
             render_passes: Mutex::new(Default::default()),
             framebuffers: Mutex::new(Default::default()),

wgpu-hal/src/vulkan/device.rs

@@ -772,7 +772,7 @@ impl super::Device {
         };
 
         let mut flags = vk::PipelineShaderStageCreateFlags::empty();
-        if self.shared.private_caps.subgroup_size_control {
+        if self.shared.features.contains(wgt::Features::SUBGROUP) {
             flags |= vk::PipelineShaderStageCreateFlags::ALLOW_VARYING_SUBGROUP_SIZE
         }
 

wgpu-hal/src/vulkan/mod.rs

@@ -347,7 +347,6 @@ struct PrivateCapabilities {
     robust_image_access2: bool,
     zero_initialize_workgroup_memory: bool,
     image_format_list: bool,
-    subgroup_size_control: bool,
 }
 
 bitflags::bitflags!(
@@ -453,6 +452,7 @@ struct DeviceShared {
     timestamp_period: f32,
     private_caps: PrivateCapabilities,
     workarounds: Workarounds,
+    features: wgt::Features,
     render_passes: Mutex<rustc_hash::FxHashMap<RenderPassKey, vk::RenderPass>>,
     framebuffers: Mutex<rustc_hash::FxHashMap<FramebufferKey, vk::Framebuffer>>,
 }