extensions: Remove get_properties() helper from extension wrappers (#728)

This helper function isn't consistently implemented across most
extension wrappers, and promotes bad Vulkan patterns by not making it
obvious to the caller that `get_physical_device_properties2()` can and
should be used to fill multiple properties structs at once.

Changelog.md

@@ -23,6 +23,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Removed experimental AMD extensions (#607)
 - Removed `query_count` parameter from `get_query_pool_results()` in favour of `data.len()` (#644)
 - Removed misnamed, deprecated `debug_utils_set_object_name()` and `debug_utils_set_object_tag()` entirely, use `set_debug_utils_object_name()` and `set_debug_utils_object_tag()` instead (#661)
+- Removed `get_properties` helper from extension wrappers (and `ext::PhysicalDeviceDrm`). Directly call `get_physical_device_properties2()` with a possible chain of multiple structs instead (#728)
 
 ## [0.37.2] - 2022-01-11
 

ash/src/extensions/ext/mod.rs

@@ -16,7 +16,6 @@ pub use self::image_compression_control::ImageCompressionControl;
 pub use self::image_drm_format_modifier::ImageDrmFormatModifier;
 pub use self::mesh_shader::MeshShader;
 pub use self::metal_surface::MetalSurface;
-pub use self::physical_device_drm::PhysicalDeviceDrm;
 pub use self::private_data::PrivateData;
 pub use self::sample_locations::SampleLocations;
 pub use self::tooling_info::ToolingInfo;
@@ -39,7 +38,6 @@ mod image_compression_control;
 mod image_drm_format_modifier;
 mod mesh_shader;
 mod metal_surface;
-mod physical_device_drm;
 mod private_data;
 mod sample_locations;
 mod tooling_info;

ash/src/extensions/ext/physical_device_drm.rs

@@ -1,23 +0,0 @@
-use crate::vk;
-use crate::Instance;
-use std::ffi::CStr;
-
-#[derive(Clone)]
-pub struct PhysicalDeviceDrm;
-
-impl PhysicalDeviceDrm {
-    #[inline]
-    pub unsafe fn get_properties(
-        instance: &Instance,
-        pdevice: vk::PhysicalDevice,
-    ) -> vk::PhysicalDeviceDrmPropertiesEXT {
-        let mut props_drm = vk::PhysicalDeviceDrmPropertiesEXT::default();
-        {
-            let mut props = vk::PhysicalDeviceProperties2::default().push_next(&mut props_drm);
-            instance.get_physical_device_properties2(pdevice, &mut props);
-        }
-        props_drm
-    }
-
-    pub const NAME: &'static CStr = vk::ExtPhysicalDeviceDrmFn::NAME;
-}

ash/src/extensions/khr/acceleration_structure.rs

@@ -20,19 +20,6 @@ impl AccelerationStructure {
         Self { handle, fp }
     }
 
-    #[inline]
-    pub unsafe fn get_properties(
-        instance: &Instance,
-        pdevice: vk::PhysicalDevice,
-    ) -> vk::PhysicalDeviceAccelerationStructurePropertiesKHR {
-        let mut props_rt = vk::PhysicalDeviceAccelerationStructurePropertiesKHR::default();
-        {
-            let mut props = vk::PhysicalDeviceProperties2::default().push_next(&mut props_rt);
-            instance.get_physical_device_properties2(pdevice, &mut props);
-        }
-        props_rt
-    }
-
     /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkCreateAccelerationStructureKHR.html>
     #[inline]
     pub unsafe fn create_acceleration_structure(

ash/src/extensions/khr/ray_tracing_pipeline.rs

@@ -20,19 +20,6 @@ impl RayTracingPipeline {
         Self { handle, fp }
     }
 
-    #[inline]
-    pub unsafe fn get_properties(
-        instance: &Instance,
-        pdevice: vk::PhysicalDevice,
-    ) -> vk::PhysicalDeviceRayTracingPipelinePropertiesKHR {
-        let mut props_rt = vk::PhysicalDeviceRayTracingPipelinePropertiesKHR::default();
-        {
-            let mut props = vk::PhysicalDeviceProperties2::default().push_next(&mut props_rt);
-            instance.get_physical_device_properties2(pdevice, &mut props);
-        }
-        props_rt
-    }
-
     /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkCmdTraceRaysKHR.html>
     #[inline]
     pub unsafe fn cmd_trace_rays(

ash/src/extensions/nv/ray_tracing.rs

@@ -20,19 +20,6 @@ impl RayTracing {
         Self { handle, fp }
     }
 
-    #[inline]
-    pub unsafe fn get_properties(
-        instance: &Instance,
-        pdevice: vk::PhysicalDevice,
-    ) -> vk::PhysicalDeviceRayTracingPropertiesNV {
-        let mut props_rt = vk::PhysicalDeviceRayTracingPropertiesNV::default();
-        {
-            let mut props = vk::PhysicalDeviceProperties2::default().push_next(&mut props_rt);
-            instance.get_physical_device_properties2(pdevice, &mut props);
-        }
-        props_rt
-    }
-
     /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkCreateAccelerationStructureNV.html>
     #[inline]
     pub unsafe fn create_acceleration_structure(