1 files changed, 81 insertions, 0 deletions
diff --git a/third_party/rust/ash/src/lib.rs b/third_party/rust/ash/src/lib.rs
new file mode 100644
index 0000000000..11374f5dfe
--- /dev/null
+++ b/third_party/rust/ash/src/lib.rs
@@ -0,0 +1,81 @@
+#![allow(clippy::too_many_arguments, clippy::missing_safety_doc)]
+//! # Vulkan API
+//!
+//! <https://www.khronos.org/registry/vulkan/specs/1.2-extensions/html/index.html>
+//!
+//! ## Examples
+//!
+//! ```rust,no_run
+//! use ash::{vk, Entry, version::EntryV1_0};
+//! # fn main() -> Result<(), Box<dyn std::error::Error>> {
+//! let entry = Entry::new()?;
+//! let app_info = vk::ApplicationInfo {
+//!     api_version: vk::make_version(1, 0, 0),
+//!     ..Default::default()
+//! };
+//! let create_info = vk::InstanceCreateInfo {
+//!     p_application_info: &app_info,
+//!     ..Default::default()
+//! };
+//! let instance = unsafe { entry.create_instance(&create_info, None)? };
+//! # Ok(()) }
+//! ```
+//!
+
+pub use crate::device::Device;
+pub use crate::entry::{EntryCustom, InstanceError};
+#[cfg(feature = "libloading")]
+pub use crate::entry_libloading::{Entry, LoadingError};
+pub use crate::instance::Instance;
+
+mod device;
+mod entry;
+#[cfg(feature = "libloading")]
+mod entry_libloading;
+mod instance;
+pub mod prelude;
+pub mod util;
+pub mod version;
+#[macro_use]
+pub mod vk;
+
+// macros of vk need to be defined beforehand
+pub mod extensions;
+
+pub trait RawPtr<T> {
+    fn as_raw_ptr(&self) -> *const T;
+}
+
+impl<'r, T> RawPtr<T> for Option<&'r T> {
+    fn as_raw_ptr(&self) -> *const T {
+        match *self {
+            Some(inner) => inner as *const T,
+
+            _ => ::std::ptr::null(),
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::vk;
+    #[test]
+    fn test_ptr_chains() {
+        let mut variable_pointers = vk::PhysicalDeviceVariablePointerFeatures::builder();
+        let mut corner = vk::PhysicalDeviceCornerSampledImageFeaturesNV::builder();
+        let chain = vec![
+            &variable_pointers as *const _ as usize,
+            &corner as *const _ as usize,
+        ];
+        let mut device_create_info = vk::DeviceCreateInfo::builder()
+            .push_next(&mut corner)
+            .push_next(&mut variable_pointers);
+        let chain2: Vec<usize> = unsafe {
+            vk::ptr_chain_iter(&mut device_create_info)
+                .skip(1)
+                .map(|ptr| ptr as usize)
+                .collect()
+        };
+        assert_eq!(chain, chain2);
+    }
+}