Culling, rendering improvements and optimizations, block removing test.

Blocks.cs

@@ -2,8 +2,11 @@
 {
     public enum Blocks : byte
     {
-        Air = 0,
-        Stone = 1,
+        Air,
+        Stone,
+        Dirt,
+        OakPlanks,
+        Grass
     }
 
     public enum Orientation : uint
@@ -16,8 +19,58 @@
         South = 5, // - Z
     }
 
-    public enum Texture : uint
+    public class BlockDefinition
     {
-        Stone = 1
+        public Blocks BlockType;
+        public Textures[] FaceTextures;
+
+        public BlockDefinition(Blocks type, Textures singleTexture)
+        {
+            BlockType = type;
+            FaceTextures = new Voxel.Textures[6];
+            for (int i = 0; i < 6; i++) FaceTextures[i] = singleTexture;
+        }
+
+        public BlockDefinition(
+            Blocks type,
+            Textures west,
+            Textures east,
+            Textures top,
+            Textures bottom,
+            Textures north,
+            Textures south
+        )
+        {
+            BlockType = type;
+            FaceTextures = new Textures[]
+            {
+                west, east, top, bottom, north, south
+            };
+        }
+    }
+
+    public static class BlockDefinitions
+    {
+        public static readonly Dictionary<Blocks, BlockDefinition> Blocks;
+
+        static BlockDefinitions()
+        {
+            Blocks = new Dictionary<Blocks, BlockDefinition>
+            {
+                { Voxel.Blocks.Stone, new BlockDefinition(Voxel.Blocks.Stone, Voxel.Textures.Stone) },
+                { Voxel.Blocks.Dirt, new BlockDefinition(Voxel.Blocks.Dirt, Voxel.Textures.Dirt) },
+                { Voxel.Blocks.OakPlanks, new BlockDefinition(Voxel.Blocks.OakPlanks, Voxel.Textures.OakPlanks) },
+
+                { Voxel.Blocks.Grass, new BlockDefinition(
+                    Voxel.Blocks.Grass,
+                    Voxel.Textures.GrassSide,  // West
+                    Voxel.Textures.GrassSide,  // East
+                    Voxel.Textures.GrassTop,   // Top
+                    Voxel.Textures.Dirt,       // Bottom
+                    Voxel.Textures.GrassSide,  // North
+                    Voxel.Textures.GrassSide   // South
+                )},
+            };
+        }
     }
 }