From 27d34bcb2b07a33605cd514df896aab38fa2e9cc Mon Sep 17 00:00:00 2001
From: Dzmitry Malyshau <kvark@fastmail.com>
Date: Mon, 6 May 2024 22:50:10 -0700
Subject: [PATCH] metal: return AlphaMode::Ignored when not transparent

---
 Cargo.toml                          | 2 +-
 blade-graphics/src/metal/surface.rs | 8 +++++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index 63c09066..6d2c6c80 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,7 +16,7 @@ bitflags = "2"
 bytemuck = { version = "1", features = ["derive"] }
 choir = "0.7"
 egui = "0.26"
-glam = { version = "0.25", features = ["mint"] }
+glam = { version = "0.27", features = ["mint"] }
 gltf = { version = "1.1", default-features = false }
 log = "0.4"
 mint = "0.5"
diff --git a/blade-graphics/src/metal/surface.rs b/blade-graphics/src/metal/surface.rs
index 34583c7a..79e30102 100644
--- a/blade-graphics/src/metal/surface.rs
+++ b/blade-graphics/src/metal/surface.rs
@@ -97,7 +97,13 @@ impl super::Surface {
 
         crate::SurfaceInfo {
             format,
-            alpha: crate::AlphaMode::PostMultiplied,
+            alpha: if config.transparent {
+                crate::AlphaMode::PostMultiplied
+            } else {
+                //Warning: it's not really ignored! Instead, it's assumed to be 1:
+                // https://developer.apple.com/documentation/quartzcore/calayer/1410763-isopaque
+                crate::AlphaMode::Ignored
+            },
         }
     }
 }