From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 21:33:14 +0200
Subject: Adding upstream version 115.7.0esr.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 third_party/rust/ash/src/vk/prelude.rs | 61 ++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 third_party/rust/ash/src/vk/prelude.rs

(limited to 'third_party/rust/ash/src/vk/prelude.rs')

diff --git a/third_party/rust/ash/src/vk/prelude.rs b/third_party/rust/ash/src/vk/prelude.rs
new file mode 100644
index 0000000000..cb2f17718c
--- /dev/null
+++ b/third_party/rust/ash/src/vk/prelude.rs
@@ -0,0 +1,61 @@
+use crate::vk;
+
+/// Holds 24 bits in the least significant bits of memory,
+/// and 8 bytes in the most significant bits of that memory,
+/// occupying a single [`u32`] in total. This is commonly used in
+/// [acceleration structure instances] such as
+/// [`vk::AccelerationStructureInstanceKHR`],
+/// [`vk::AccelerationStructureSRTMotionInstanceNV`] and
+/// [`vk::AccelerationStructureMatrixMotionInstanceNV`].
+///
+/// [acceleration structure instances]: https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/VkAccelerationStructureInstanceKHR.html#_description
+#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Debug)]
+#[repr(transparent)]
+pub struct Packed24_8(u32);
+
+impl Packed24_8 {
+    pub fn new(low_24: u32, high_8: u8) -> Self {
+        Self((low_24 & 0x00ff_ffff) | (u32::from(high_8) << 24))
+    }
+
+    /// Extracts the least-significant 24 bits (3 bytes) of this integer
+    pub fn low_24(&self) -> u32 {
+        self.0 & 0xffffff
+    }
+
+    /// Extracts the most significant 8 bits (single byte) of this integer
+    pub fn high_8(&self) -> u8 {
+        (self.0 >> 24) as u8
+    }
+}
+
+impl vk::ColorComponentFlags {
+    /// Contraction of [`R`][Self::R] | [`G`][Self::G] | [`B`][Self::B] | [`A`][Self::A]
+    pub const RGBA: Self = Self(Self::R.0 | Self::G.0 | Self::B.0 | Self::A.0);
+}
+
+impl From<vk::Extent2D> for vk::Extent3D {
+    fn from(value: vk::Extent2D) -> Self {
+        Self {
+            width: value.width,
+            height: value.height,
+            depth: 1,
+        }
+    }
+}
+
+impl From<vk::Extent2D> for vk::Rect2D {
+    fn from(extent: vk::Extent2D) -> Self {
+        Self {
+            offset: Default::default(),
+            extent,
+        }
+    }
+}
+
+/// Structures implementing this trait are layout-compatible with [`vk::BaseInStructure`] and
+/// [`vk::BaseOutStructure`]. Such structures have an `s_type` field indicating its type, which
+/// must always match the value of [`TaggedStructure::STRUCTURE_TYPE`].
+pub unsafe trait TaggedStructure {
+    const STRUCTURE_TYPE: vk::StructureType;
+}
-- 
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