From edfd3b9f8fc9a380e8cc73350f558997ba32738d Mon Sep 17 00:00:00 2001
From: Marijn Suijten <marijn@traverseresearch.nl>
Date: Mon, 13 Mar 2023 21:43:07 +0100
Subject: [PATCH] generator: Keep deprecated `MIRROR_CLAMP_TO_EDGE_KHR` alias

Somehow this stuck along when we removed all the other deprecated
aliases, because the comment annotation didn't match up with what was
normally used (but we did write a special `#[deprecated = ..]`
annotation based on `"Alias"`).  Now that this all has been normalized
in `vk.xml` behind a standardized `deprecated="reason"` attribute we
have to go out of our way to keep this constant alias alive.
---
 ash/src/vk/extensions.rs |  2 ++
 generator/src/lib.rs     | 18 +++++++++++++++---
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/ash/src/vk/extensions.rs b/ash/src/vk/extensions.rs
index bee1c89..2b130f1 100644
--- a/ash/src/vk/extensions.rs
+++ b/ash/src/vk/extensions.rs
@@ -1538,6 +1538,8 @@ impl KhrSamplerMirrorClampToEdgeFn {
 impl SamplerAddressMode {
     #[doc = "Note that this defines what was previously a core enum, and so uses the 'value' attribute rather than 'offset', and does not have a suffix. This is a special case, and should not be repeated"]
     pub const MIRROR_CLAMP_TO_EDGE: Self = Self(4);
+    #[deprecated = "Introduced for consistency with extension suffixing rules"]
+    pub const MIRROR_CLAMP_TO_EDGE_KHR: Self = Self::MIRROR_CLAMP_TO_EDGE;
 }
 impl ImgFilterCubicFn {
     #[inline]
diff --git a/generator/src/lib.rs b/generator/src/lib.rs
index b1b8ca0..ab9788e 100644
--- a/generator/src/lib.rs
+++ b/generator/src/lib.rs
@@ -1112,7 +1112,10 @@ pub fn generate_extension_constants<'a>(
                 continue;
             }
 
-            if enum_.deprecated.is_some() {
+            if enum_.deprecated.is_some()
+                // TODO: Remove deprecated alias on next breaking release
+                && enum_.name != "VK_SAMPLER_ADDRESS_MODE_MIRROR_CLAMP_TO_EDGE_KHR"
+            {
                 continue;
             }
 
@@ -1460,10 +1463,19 @@ pub fn bitflags_impl_block(
 ) -> TokenStream {
     let variants = constants
         .iter()
-        .filter(|constant| !constant.is_deprecated())
+        .filter(|constant| {
+            !constant.is_deprecated()
+                // TODO: Remove deprecated alias on next breaking release
+                || constant.variant_ident(enum_name) == "MIRROR_CLAMP_TO_EDGE_KHR"
+        })
         .map(|constant| {
             let variant_ident = constant.variant_ident(enum_name);
-            let notation = constant.doc_attribute();
+            let notation = if variant_ident == "MIRROR_CLAMP_TO_EDGE_KHR" {
+                let comment = constant.formatted_notation();
+                Some(quote!(#[deprecated = #comment]))
+            } else {
+                constant.doc_attribute()
+            };
             let constant = constant.constant(enum_name);
             let value = if let Constant::Alias(_) = &constant {
                 quote!(#constant)