From 40e0b24127b3d7874356f92fa39a28c857d2ef81 Mon Sep 17 00:00:00 2001
From: "Andrew P. Lentvorski" <andrewl@thirdwayv.com>
Date: Mon, 22 May 2017 09:52:36 -0700
Subject: [PATCH] added code to get to OutOfDeviceMemory error

---
 vulkano-win/Cargo.toml |  3 +++
 vulkano-win/src/lib.rs | 28 ++++++++++++++++++++++++++++
 vulkano/build.rs       |  1 +
 3 files changed, 32 insertions(+)

diff --git a/vulkano-win/Cargo.toml b/vulkano-win/Cargo.toml
index 4f5ab5a879..338dd5d75b 100644
--- a/vulkano-win/Cargo.toml
+++ b/vulkano-win/Cargo.toml
@@ -10,3 +10,6 @@ categories = ["rendering::graphics-api"]
 [dependencies]
 vulkano = { version = "0.3.0", path = "../vulkano" }
 winit = "0.6.4"
+metal-rs = "0.3"
+cocoa = "0.8.1"
+objc = ""
\ No newline at end of file
diff --git a/vulkano-win/src/lib.rs b/vulkano-win/src/lib.rs
index 44806fb9c4..b97232ddc7 100644
--- a/vulkano-win/src/lib.rs
+++ b/vulkano-win/src/lib.rs
@@ -1,6 +1,10 @@
 extern crate vulkano;
 extern crate winit;
 
+extern crate objc;
+extern crate cocoa;
+extern crate metal_rs as metal;
+
 use std::error;
 use std::fmt;
 use std::ptr;
@@ -13,6 +17,15 @@ use vulkano::swapchain::SurfaceCreationError;
 use winit::{EventsLoop, WindowBuilder};
 use winit::CreationError as WindowCreationError;
 
+use objc::runtime::{YES};
+
+use cocoa::base::id as cocoa_id;
+use cocoa::appkit::{NSWindow, NSView};
+
+use metal::*;
+
+use std::mem;
+
 pub fn required_extensions() -> InstanceExtensions {
     let ideal = InstanceExtensions {
         khr_surface: true,
@@ -160,5 +173,20 @@ unsafe fn winit_to_surface(instance: &Arc<Instance>, win: &winit::Window)
                            -> Result<Arc<Surface>, SurfaceCreationError>
 {
     use winit::os::macos::WindowExt;
+
+    unsafe {
+        let wnd: cocoa_id = mem::transmute(win.get_nswindow());
+        
+        let layer = CAMetalLayer::new();
+
+        layer.set_edge_antialiasing_mask(0);
+        layer.set_presents_with_transaction(false);
+        layer.remove_all_animations();
+
+        let view = wnd.contentView();
+        view.setWantsLayer(YES);
+        view.setLayer(mem::transmute(layer.0));  // Bombs here with out of memory        
+    }
+    
     Surface::from_macos_moltenvk(instance, win.get_nsview() as *const ())
 }
diff --git a/vulkano/build.rs b/vulkano/build.rs
index 0e7e64a3b0..dce0a24e3c 100644
--- a/vulkano/build.rs
+++ b/vulkano/build.rs
@@ -17,5 +17,6 @@ fn main() {
         println!("cargo:rustc-link-lib=framework=MoltenVK");
         println!("cargo:rustc-link-lib=framework=QuartzCore");
         println!("cargo:rustc-link-lib=framework=Metal");
+        println!("cargo:rustc-link-lib=framework=Foundation");
     }
 }