extensions/khr: Add VK_KHR_external_memory_win32 (#579)

Changelog.md

@@ -13,6 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- Added `VK_KHR_external_memory_win32` device extension (#579)
 - Added `VK_EXT_extended_dynamic_state2` device extension (#572)
 - Added `VK_KHR_copy_commands2` device extension (#571)
 - Added `VK_EXT_private_data` device extension (#570)

ash/src/extensions/khr/external_memory_win32.rs

@@ -0,0 +1,63 @@
+use crate::prelude::*;
+use crate::vk;
+use crate::{Device, Instance};
+use std::ffi::CStr;
+use std::mem;
+use std::ptr;
+
+/// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/VK_KHR_external_memory_win32.html>
+#[derive(Clone)]
+pub struct ExternalMemoryWin32 {
+    handle: vk::Device,
+    fp: vk::KhrExternalMemoryWin32Fn,
+}
+
+impl ExternalMemoryWin32 {
+    pub fn new(instance: &Instance, device: &Device) -> Self {
+        let handle = device.handle();
+        let fp = vk::KhrExternalMemoryWin32Fn::load(|name| unsafe {
+            mem::transmute(instance.get_device_proc_addr(handle, name.as_ptr()))
+        });
+        Self { handle, fp }
+    }
+
+    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkGetMemoryWin32HandleKHR.html>
+    pub unsafe fn get_memory_win32_handle(
+        &self,
+        create_info: &vk::MemoryGetWin32HandleInfoKHR,
+    ) -> VkResult<vk::HANDLE> {
+        let mut handle = ptr::null_mut();
+        self.fp
+            .get_memory_win32_handle_khr(self.handle, create_info, &mut handle)
+            .result_with_success(handle)
+    }
+
+    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkGetMemoryWin32HandlePropertiesKHR.html>
+    pub unsafe fn get_memory_win32_handle_properties(
+        &self,
+        handle_type: vk::ExternalMemoryHandleTypeFlags,
+        handle: vk::HANDLE,
+    ) -> VkResult<vk::MemoryWin32HandlePropertiesKHR> {
+        let mut memory_win32_handle_properties = Default::default();
+        self.fp
+            .get_memory_win32_handle_properties_khr(
+                self.handle,
+                handle_type,
+                handle,
+                &mut memory_win32_handle_properties,
+            )
+            .result_with_success(memory_win32_handle_properties)
+    }
+
+    pub fn name() -> &'static CStr {
+        vk::KhrExternalMemoryWin32Fn::name()
+    }
+
+    pub fn fp(&self) -> &vk::KhrExternalMemoryWin32Fn {
+        &self.fp
+    }
+
+    pub fn device(&self) -> vk::Device {
+        self.handle
+    }
+}

ash/src/extensions/khr/mod.rs

@@ -10,6 +10,7 @@ pub use self::draw_indirect_count::DrawIndirectCount;
 pub use self::dynamic_rendering::DynamicRendering;
 pub use self::external_fence_fd::ExternalFenceFd;
 pub use self::external_memory_fd::ExternalMemoryFd;
+pub use self::external_memory_win32::ExternalMemoryWin32;
 pub use self::external_semaphore_fd::ExternalSemaphoreFd;
 pub use self::get_memory_requirements2::GetMemoryRequirements2;
 pub use self::get_physical_device_properties2::GetPhysicalDeviceProperties2;
@@ -42,6 +43,7 @@ mod draw_indirect_count;
 mod dynamic_rendering;
 mod external_fence_fd;
 mod external_memory_fd;
+mod external_memory_win32;
 mod external_semaphore_fd;
 mod get_memory_requirements2;
 mod get_physical_device_properties2;