From 6d18e0bd3819e991fad01df66316a803bbc16dee Mon Sep 17 00:00:00 2001
From: Erik <erik.nihlen@gmail.com>
Date: Fri, 10 Apr 2026 16:39:40 +0200
Subject: [PATCH] =?UTF-8?q?feat(app):=20Silk.NET=20window=20smoke=20?=
 =?UTF-8?q?=E2=80=94=20clear=20to=20navy?=
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Minimal Silk.NET window wiring: 1280x720, OpenGL 4.3 core profile,
VSync, dark navy clear color, Escape to close. No rendering beyond
the clear call — terrain and shader land in Tasks 8 and 9.

Manual smoke: process starts, stays alive past GL context creation,
produces no stderr, no uncaught exceptions. Actual visual check
will happen end-to-end after Task 10.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---
 src/AcDream.App/Program.cs              |  6 ++-
 src/AcDream.App/Rendering/GameWindow.cs | 62 +++++++++++++++++++++++++
 2 files changed, 66 insertions(+), 2 deletions(-)
 create mode 100644 src/AcDream.App/Rendering/GameWindow.cs

diff --git a/src/AcDream.App/Program.cs b/src/AcDream.App/Program.cs
index f7c3234..dae3ff3 100644
--- a/src/AcDream.App/Program.cs
+++ b/src/AcDream.App/Program.cs
@@ -1,3 +1,5 @@
-// src/AcDream.App/Program.cs
-Console.WriteLine("acdream app — phase 1 skeleton");
+using AcDream.App.Rendering;
+
+var window = new GameWindow();
+window.Run();
 return 0;
diff --git a/src/AcDream.App/Rendering/GameWindow.cs b/src/AcDream.App/Rendering/GameWindow.cs
new file mode 100644
index 0000000..9a52fb5
--- /dev/null
+++ b/src/AcDream.App/Rendering/GameWindow.cs
@@ -0,0 +1,62 @@
+using Silk.NET.Input;
+using Silk.NET.Maths;
+using Silk.NET.OpenGL;
+using Silk.NET.Windowing;
+
+namespace AcDream.App.Rendering;
+
+public sealed class GameWindow : IDisposable
+{
+    private IWindow? _window;
+    private GL? _gl;
+    private IInputContext? _input;
+
+    public void Run()
+    {
+        var options = WindowOptions.Default with
+        {
+            Size = new Vector2D<int>(1280, 720),
+            Title = "acdream — phase 1",
+            API = new GraphicsAPI(
+                ContextAPI.OpenGL,
+                ContextProfile.Core,
+                ContextFlags.ForwardCompatible,
+                new APIVersion(4, 3)),
+            VSync = true,
+        };
+
+        _window = Window.Create(options);
+        _window.Load += OnLoad;
+        _window.Render += OnRender;
+        _window.Closing += OnClosing;
+
+        _window.Run();
+    }
+
+    private void OnLoad()
+    {
+        _gl = GL.GetApi(_window!);
+        _input = _window!.CreateInput();
+        foreach (var kb in _input.Keyboards)
+            kb.KeyDown += (_, key, _) =>
+            {
+                if (key == Key.Escape)
+                    _window!.Close();
+            };
+
+        _gl.ClearColor(0.05f, 0.10f, 0.18f, 1.0f);
+    }
+
+    private void OnRender(double deltaSeconds)
+    {
+        _gl!.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
+    }
+
+    private void OnClosing()
+    {
+        _input?.Dispose();
+        _gl?.Dispose();
+    }
+
+    public void Dispose() => _window?.Dispose();
+}