.

Engine/src/Engine.cs

@@ -117,7 +117,7 @@ public sealed class Engine
 
       Renderer.EndFrame();
 
-      Presenter!.Present(Renderer.TextureInternal);
+      Presenter!.Present(Renderer.RenderTexture);
       Presenter!.Render();
     }
   }

Engine/src/Graphics/Renderer.cs

@@ -7,7 +7,8 @@ namespace Engine.Graphics;
 
 public class Renderer
 {
-  internal Texture.Texture TextureInternal => _framebuffer.TextureInternal!;
+  internal Framebuffer.Framebuffer RenderFramebuffer => _framebuffer;
+  internal Texture.Texture RenderTexture => _framebuffer.TextureInternal!;
 
   public QuadRenderer QuadRenderer { get; }
   public GlobalMeshRenderer GlobalMeshRenderer { get; }
@@ -55,12 +56,10 @@ public class Renderer
   public void EnsureRenderThread()
   {
 #if DEBUG
-    if (Thread.CurrentThread == _renderThread)
+    if (Thread.CurrentThread != _renderThread)
     {
-      return;
+      throw new InvalidOperationException("Not on render thread");
     }
-
-    throw new InvalidOperationException("Not on render thread");
 #endif
   }
 

Engine/src/Scene/Hierarchy.cs

@@ -58,21 +58,21 @@ public class Hierarchy<T>
     });
   }
 
-  public void AddChild(T parEnt, T parChild)
+  public void AddChild(T parParent, T parChild)
   {
-    SetParent(parChild, parEnt);
+    SetParent(parChild, parParent);
   }
 
-  private void SetParent(T parChild, T? parEnt)
+  private void SetParent(T parChild, T? parParent)
   {
-    if (parChild.Equals(parEnt))
+    if (parChild.Equals(parParent))
     {
       throw new InvalidOperationException("Child cannot be parent");
     }
 
     _hierarchyActions.Enqueue(() =>
     {
-      if (IsInHierarchy(parChild, parEnt))
+      if (IsInHierarchy(parChild, parParent))
       {
         throw new InvalidOperationException("Parent is a child of child");
       }
@@ -80,8 +80,8 @@ public class Hierarchy<T>
       var oldParent = GetParent(parChild);
       _childrenLookup[oldParent].Remove(parChild);
 
-      _childrenLookup[parEnt].Add(parChild);
-      _parentLookup[parChild] = parEnt;
+      _childrenLookup[parParent].Add(parChild);
+      _parentLookup[parChild] = parParent;
     });
   }
 

Engine/src/Scene/Scene.cs

@@ -87,6 +87,12 @@ public class Scene : IUpdate, IRender
     });
   }
 
+  public void AddChild(GameObject parParent, GameObject parGameObject)
+  {
+    Add(parGameObject);
+    Hierarchy.AddChild(parParent, parGameObject);
+  }
+
   public void Remove(GameObject parGameObject)
   {
     Hierarchy.Remove(parGameObject);

Engine/src/Window.cs

@@ -63,13 +63,12 @@ public class Window : IPresenter
       return;
     }
 
-    GL.ClearColor(0.0f, 0.0f, 0.0f, 1.0f);
-    GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
-
-    var texture = (Texture)parTexture;
-    _engine.Renderer.QuadRenderer.Commit(Matrix4.CreateScale(2f), Vector4.One, texture);
-    _engine.Renderer.QuadRenderer.Render(Matrix4.Identity, Matrix4.Identity);
-    _engine.Renderer.QuadRenderer.Reset();
+    GL.BlitNamedFramebuffer(_engine.Renderer.RenderFramebuffer.Handle, 0,
+      0, parTexture.Height, parTexture.Width, 0,
+      0, 0, Width, Height,
+      ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit,
+      BlitFramebufferFilter.Nearest
+    );
   }
 }
 

PresenterConsole/assets/shader/ascii.shader

@@ -37,34 +37,50 @@ const vec3 ConsoleColorVec3[16] = vec3[](
     vec3(1.0, 1.0, 1.0)  // White
 );
 
-// RGB to LAB conversion (simplified approximation)
-vec3 rgb2lab(vec3 x) {
-    const float epsilon = 0.008856;
-    const float k = 903.3;
-    vec3 fx;
-    fx.x = x.x > epsilon ? pow(x.x, 1.0 / 3.0) : (k * x.x + 16.0) / 116.0;
-    fx.y = x.y > epsilon ? pow(x.y, 1.0 / 3.0) : (k * x.y + 16.0) / 116.0;
-    fx.z = x.z > epsilon ? pow(x.z, 1.0 / 3.0) : (k * x.z + 16.0) / 116.0;
-    return fx;
+vec3 srgbToLinear(vec3 color) {
+    return mix(color / 12.92, pow((color + 0.055) / 1.055, vec3(2.4)), step(0.04045, color));
+}
+
+vec3 rgbToXyz(vec3 color) {
+    const mat3 rgbToXyzMatrix = mat3(
+        0.4124564, 0.3575761, 0.1804375,
+        0.2126729, 0.7151522, 0.0721750,
+        0.0193339, 0.1191920, 0.9503041
+    );
+    return rgbToXyzMatrix * color;
+}
+
+vec3 xyzToLab(vec3 xyz) {
+    const vec3 whitePoint = vec3(0.95047, 1.0, 1.08883); // D65 white point
+    xyz = xyz / whitePoint;
+
+    vec3 f = mix(pow(xyz, vec3(1.0 / 3.0)), 7.787 * xyz + 16.0 / 116.0, step(0.008856, xyz));
+    return vec3(
+        (116.0 * f.y) - 16.0,
+        500.0 * (f.x - f.y),
+        200.0 * (f.y - f.z)
+    );
+}
+
+vec3 rgb2hsv(vec3 c)
+{
+    vec4 K = vec4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
+    vec4 p = mix(vec4(c.bg, K.wz), vec4(c.gb, K.xy), step(c.b, c.g));
+    vec4 q = mix(vec4(p.xyw, c.r), vec4(c.r, p.yzx), step(p.x, c.r));
+
+    float d = q.x - min(q.w, q.y);
+    float e = 1.0e-10;
+    return vec3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);
 }
 
-// Perceptually weighted color difference (CIEDE2000-inspired)
 float perceptualColorDistance(vec3 color1, vec3 color2) {
-    vec3 lab1 = rgb2lab(color1);
-    vec3 lab2 = rgb2lab(color2);
+    vec3 lab1 = xyzToLab(rgbToXyz(srgbToLinear(color1)));
+    vec3 lab2 = xyzToLab(rgbToXyz(srgbToLinear(color2)));
+    vec3 delta = lab1 - lab2;
 
-    // Compute LAB-like color difference with perceptual weighting
-    float deltaL = lab1.x - lab2.x;
-    float deltaA = lab1.y - lab2.y;
-    float deltaB = lab1.z - lab2.z;
-
-    // Perceptual weighting
-    return deltaL * deltaL * 1.0 + // Lightness difference
-        deltaA * deltaA * 1.5 +    // Green-Red difference
-        deltaB * deltaB * 1.5;     // Blue-Yellow difference
+    return dot(delta, delta);
 }
 
-// Advanced color matching considering multiple color attributes
 int findMostPerceptuallyAccurateColor(vec3 color) {
     int bestMatchIndex = 0;
     float minDistance = perceptualColorDistance(color, ConsoleColorVec3[0]);