From 03d6e003a4223b1e335f2c08f55a791f332d7f3c Mon Sep 17 00:00:00 2001
From: Stephen Gutekanst <stephen@hexops.com>
Date: Sun, 31 Jul 2022 10:39:08 -0700
Subject: [PATCH] gpu: make ShaderModule.getCompilationInfo friendlier

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
---
 gpu/src/shader_module.zig | 28 ++++++++++++++++++++++++++--
 1 file changed, 26 insertions(+), 2 deletions(-)

diff --git a/gpu/src/shader_module.zig b/gpu/src/shader_module.zig
index 233fd228..c943a8f7 100644
--- a/gpu/src/shader_module.zig
+++ b/gpu/src/shader_module.zig
@@ -1,5 +1,7 @@
 const ChainedStruct = @import("types.zig").ChainedStruct;
 const CompilationInfoCallback = @import("callbacks.zig").CompilationInfoCallback;
+const CompilationInfoRequestStatus = @import("types.zig").CompilationInfoRequestStatus;
+const CompilationInfo = @import("types.zig").CompilationInfo;
 const Impl = @import("interface.zig").Impl;
 
 pub const ShaderModule = opaque {
@@ -19,8 +21,30 @@ pub const ShaderModule = opaque {
         source: [*:0]const u8,
     };
 
-    pub inline fn getCompilationInfo(shader_module: *ShaderModule, callback: CompilationInfoCallback, userdata: ?*anyopaque) void {
-        Impl.shaderModuleGetCompilationInfo(shader_module, callback, userdata);
+    pub inline fn getCompilationInfo(
+        shader_module: *ShaderModule,
+        comptime Context: type,
+        comptime callback: fn (
+            status: CompilationInfoRequestStatus,
+            compilation_info: *const CompilationInfo,
+            ctx: Context,
+        ) callconv(.Inline) void,
+        context: Context,
+    ) void {
+        const Helper = struct {
+            pub fn callback(
+                status: CompilationInfoRequestStatus,
+                compilation_info: *const CompilationInfo,
+                userdata: ?*anyopaque,
+            ) callconv(.C) void {
+                callback(
+                    status,
+                    compilation_info,
+                    if (Context == void) {} orelse @ptrCast(Context, userdata),
+                );
+            }
+        };
+        Impl.shaderModuleGetCompilationInfo(shader_module, Helper.callback, if (Context == void) null orelse context);
     }
 
     pub inline fn setLabel(shader_module: *ShaderModule, label: [*:0]const u8) void {