Holidays 12.10. -> 25.10.2020

~ Moved code around in files.

SM.Base:
+ PostProcessing-system
+ OnInitialization() for Scenes.
+ Shader-Extensions
+ Added option to not react while unfocused to the window.
+ Added Screenshots to the window.
+ Connected the log system to the SM.OGL-action system.

~ Replaced IShader with abstract MaterialShader.
~ When a log compression folder doesn't exist, it will create one.

SM.OGL:
+ Added support for UniformArrays
+ Added ShaderPreProcessing
+ Added Shader Extensions.
+ Added Debug actions.
+ SM.OGL settings

~ Framebuffer Size is automaticly changed, when the window and scale is set.

SM2D:
+ Added easy shader drawing.

SMCode/SM.OGL/Shaders/ShaderFile.cs

@@ -1,30 +1,37 @@
-using System;
+#region usings
+
+using System;
 using System.Collections.Generic;
 using OpenTK.Graphics.OpenGL4;
 
+#endregion
+
 namespace SM.OGL.Shaders
 {
     /// <summary>
-    /// Contains/Represents a file used in shaders.
+    ///     Contains/Represents a file used in shaders.
     /// </summary>
     public class ShaderFile : GLObject
     {
         private string _data;
 
-        /// <inheritdoc />
-        public override ObjectLabelIdentifier TypeIdentifier { get; } = ObjectLabelIdentifier.Shader;
-
         /// <summary>
-        /// Contains overrides, that can be used to import values from the CPU to the shader before it is been send to the GPU.
-        /// </summary>
-        public Dictionary<string, string> StringOverrides = new Dictionary<string, string>();
-        /// <summary>
-        /// Contains other shader files to allow access to their functions.
+        ///     Contains other shader files to allow access to their functions.
         /// </summary>
         public List<ShaderFile> GLSLExtensions = new List<ShaderFile>();
 
         /// <summary>
-        /// Creates a file.
+        ///     Gets/Sets the name for this shader file.
+        /// </summary>
+        public new string Name;
+
+        /// <summary>
+        ///     Contains overrides, that can be used to import values from the CPU to the shader before it is been send to the GPU.
+        /// </summary>
+        public Dictionary<string, string> StringOverrides = new Dictionary<string, string>();
+
+        /// <summary>
+        ///     Creates a file.
         /// </summary>
         /// <param name="data">The source file.</param>
         public ShaderFile(string data)
@@ -32,11 +39,28 @@ namespace SM.OGL.Shaders
             _data = data;
         }
 
+        /// <inheritdoc />
+        public override ObjectLabelIdentifier TypeIdentifier { get; } = ObjectLabelIdentifier.Shader;
+
 
         private void GenerateSource()
         {
-            foreach (KeyValuePair<string, string> kvp in StringOverrides)
-                _data = _data.Replace("//! " + kvp.Key, kvp.Value);
+            if (!GLSettings.ShaderPreProcessing) return;
+
+            if (_data.Contains("//#"))
+            {
+                var commandSplits = _data.Split(new[] {"//#"}, StringSplitOptions.RemoveEmptyEntries);
+                for (var i = 1; i < commandSplits.Length; i++)
+                {
+                    var split = commandSplits[i].Split('\r', '\n')[0].Trim();
+                    var cmdArgs = split.Split(new[] {' '}, 2);
+
+                    ShaderPreProcess.Actions[cmdArgs[0]]?.Invoke(this, cmdArgs[1]);
+                }
+            }
+
+            foreach (var kvp in StringOverrides)
+                _data = _data.Replace("//!" + kvp.Key, kvp.Value);
         }
 
         internal void Compile(GenericShader shader, ShaderType type)
@@ -49,7 +73,11 @@ namespace SM.OGL.Shaders
                 GL.ShaderSource(_id, _data);
                 GL.CompileShader(_id);
             }
+
             GL.AttachShader(shader, _id);
+            GLDebugging.CheckGLErrors($"Error at loading shader file: '{shader.GetType()}', '{type}', %code%");
+
+            for (var i = 0; i < GLSLExtensions.Count; i++) GLSLExtensions[i].Compile(shader, type);
         }
     }
 }