Improved PostProcessing System

SMCode/SM2D/Light/LightPostEffect.cs

@@ -0,0 +1,20 @@
+using System.Reflection;
+using SM.Base.PostProcess;
+using SM.Base.Scene;
+using SM.OGL.Framebuffer;
+using SM.Utility;
+
+namespace SM2D.Light
+{
+    public class LightPostEffect : PostProcessEffect
+    {
+        PostProcessShader _shader = new PostProcessShader(AssemblyUtility.ReadAssemblyFile("SM2D.Light.light.frag"));
+
+        public override void Draw(Framebuffer main)
+        {
+            base.Draw(main);
+
+            _shader.Draw(main.ColorAttachments["color"]);
+        }
+    }
+}

SMCode/SM2D/Light/LightSceneExtension.cs

@@ -0,0 +1,9 @@
+using OpenTK.Graphics;
+
+namespace SM2D.Light
+{
+    public class LightSceneExtension
+    {
+        public Color4 Ambient;
+    }
+}

SMCode/SM2D/Light/light.frag

@@ -0,0 +1,13 @@
+#version 330
+
+in vec2 vTexture;
+
+vec4 GetRenderColor();
+
+uniform vec4 Ambient = vec4(1);
+
+layout(location = 0) out vec4 color;
+
+void main() {
+	color = GetRenderColor() * Ambient;
+}

SMCode/SM2D/Pipelines/Basic2DPipeline.cs

@@ -5,6 +5,7 @@ using SM.Base;
 using SM.Base.Contexts;
 using SM.Base.Scene;
 using SM.OGL.Framebuffer;
+using SM2D.Light;
 using SM2D.Shader;
 
 #endregion
@@ -13,14 +14,32 @@ namespace SM2D.Pipelines
 {
     public class Basic2DPipeline : RenderPipeline<Scene.Scene>
     {
+        private Framebuffer _tempWindow;
+        private Light.LightPostEffect _lightEffect;
+
+        protected override void Initialization(GenericWindow window)
+        {
+            _tempWindow = CreateWindowFramebuffer();
+            _lightEffect = new LightPostEffect();
+        }
 
         protected override void Render(ref DrawContext context, Scene.Scene scene)
         {
             base.Render(ref context, scene);
 
-            Framebuffer.Screen.Activate(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
+            _tempWindow.Activate(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
 
-            scene?.Draw(context);
+            if (scene != null)
+            {
+                scene.DrawBackground(context);
+
+                scene.DrawMainObjects(context);
+                
+                Framebuffer.Screen.Activate(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
+                _lightEffect.Draw(_tempWindow);
+
+                scene.DrawHUD(context);
+            }
         }
     }
 }

SMCode/SM2D/SM2D.csproj

@@ -45,6 +45,8 @@
     <Compile Include="Drawing\DrawParticles.cs" />
     <Compile Include="Drawing\DrawText.cs" />
     <Compile Include="GLWindow2D.cs" />
+    <Compile Include="Light\LightPostEffect.cs" />
+    <Compile Include="Light\LightSceneExtension.cs" />
     <Compile Include="Object\Polygon.cs" />
     <Compile Include="Object\PolygonVertex.cs" />
     <Compile Include="Pipelines\Adv2DPipeline.cs" />
@@ -75,5 +77,8 @@
       <Version>3.2.1</Version>
     </PackageReference>
   </ItemGroup>
+  <ItemGroup>
+    <EmbeddedResource Include="Light\light.frag" />
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
 </Project>