From 0993d57f8e026efd1aad3fb46682dd338ec5649c Mon Sep 17 00:00:00 2001
From: hodasemi <superschneider@t-online.de>
Date: Wed, 22 Feb 2023 09:35:42 +0100
Subject: [PATCH] Make api version optional

---
 vulkan-rs/src/instance.rs | 4 ++--
 vulkan-sys/src/lib.rs     | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/vulkan-rs/src/instance.rs b/vulkan-rs/src/instance.rs
index aeeaa35..188cb38 100644
--- a/vulkan-rs/src/instance.rs
+++ b/vulkan-rs/src/instance.rs
@@ -120,7 +120,7 @@ impl Instance {
         instance: VkInstance,
         proc_addr: PFN_vkGetInstanceProcAddr,
         extensions: &[VkString],
-        api_version: u32,
+        api_version: Option<u32>,
     ) -> Result<Arc<Instance>> {
         log("Instance::preinitialized: start");
 
@@ -168,7 +168,7 @@ impl Instance {
 
             debug_report: None,
 
-            api_version,
+            api_version: api_version.unwrap_or(VK_MAKE_VERSION(1, 0, 0)),
         });
 
         Ok(instance)
diff --git a/vulkan-sys/src/lib.rs b/vulkan-sys/src/lib.rs
index f9369f4..8ef4519 100644
--- a/vulkan-sys/src/lib.rs
+++ b/vulkan-sys/src/lib.rs
@@ -12,11 +12,11 @@ pub mod types;
 
 pub mod functions;
 
-pub fn VK_MAKE_VERSION(major: u32, minor: u32, patch: u32) -> u32 {
+pub const fn VK_MAKE_VERSION(major: u32, minor: u32, patch: u32) -> u32 {
     (major as u32) << 22 | (minor as u32) << 12 | (patch as u32)
 }
 
-pub fn VK_GET_VERSION(version: u32) -> (u32, u32, u32) {
+pub const fn VK_GET_VERSION(version: u32) -> (u32, u32, u32) {
     let major = version >> 22;
     let minor = (version >> 12) & 0x03FF;
     let patch = version & 0x00CF;