From 0228b50dba28b0281a1419988adf26b0beaebb0d Mon Sep 17 00:00:00 2001
From: Stephen Gutekanst <stephen@hexops.com>
Date: Sun, 31 Jul 2022 13:45:40 -0700
Subject: [PATCH] gpu: make Device.setDeviceLostCallback friendlier

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
---
 gpu/src/device.zig | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/gpu/src/device.zig b/gpu/src/device.zig
index 1565e646..69dfa388 100644
--- a/gpu/src/device.zig
+++ b/gpu/src/device.zig
@@ -222,10 +222,16 @@ pub const Device = opaque {
     // TODO: presumably callback should be nullable for unsetting
     pub inline fn setDeviceLostCallback(
         device: *Device,
-        callback: Device.LostCallback,
-        userdata: ?*anyopaque,
+        comptime Context: type,
+        comptime callback: fn (reason: LostReason, message: [*:0]const u8, ctx: Context) callconv(.Inline) void,
+        context: Context,
     ) void {
-        Impl.deviceSetDeviceLostCallback(device, callback, userdata);
+        const Helper = struct {
+            pub fn callback(reason: LostReason, message: [*:0]const u8, userdata: ?*anyopaque) callconv(.C) void {
+                callback(reason, message, if (Context == void) {} else @ptrCast(Context, userdata));
+            }
+        };
+        Impl.deviceSetDeviceLostCallback(device, Helper.callback, if (Context == void) null else context);
     }
 
     pub inline fn setLabel(device: *Device, label: [*:0]const u8) void {