testing instancing

.vscode/tasks.json

@@ -94,7 +94,7 @@
         "env": {
           "LD_LIBRARY_PATH": "./lib64",
           "DYLD_LIBRARY_PATH": "./osx",
-          "FNA3D_FORCE_DRIVER": "Vulkan"
+          "FNA3D_FORCE_DRIVER": "OpenGL"
         },
         "cwd": "${workspaceFolder}/KavTest/bin/x64/Debug/net48"
       },

FNA

@@ -1 +1 @@
-Subproject commit 1df9f588a701eefc4b55a0869cd5871be0124307
+Subproject commit 7357a6f297fee33b7a8d5afddaca30480c591ba5

Kav

@@ -1 +1 @@
-Subproject commit 8b43e8f45ee6fa35f5c4d4924a62a3fcafe61301
+Subproject commit bb694d3dbe47dcfcee6bfe3fb315587419ba8c0f

KavTest/Components/InstancedCubeComponent.cs

@@ -0,0 +1,6 @@
+using Encompass;
+
+namespace KavTest.Components
+{
+    public struct InstancedCubeComponent : IComponent { }
+}

KavTest/Components/ModelComponent.cs

@@ -6,10 +6,12 @@ namespace KavTest.Components
     public struct ModelComponent : IComponent
     {
         public Model Model { get; }
+        public bool Instanced { get; }
 
-        public ModelComponent(Model model)
+        public ModelComponent(Model model, bool instanced)
         {
             Model = model;
+            Instanced = instanced;
         }
     }
 }

KavTest/Engines/Spawners/RustyBallSpawner.cs

@@ -19,7 +19,7 @@ namespace KavTest.Spawners
             var entity = CreateEntity();
 
             AddComponent(entity, new Transform3DComponent(message.Transform));
-            AddComponent(entity, new ModelComponent(RustyBallModel));
+            AddComponent(entity, new ModelComponent(RustyBallModel, true));
             AddComponent(entity, new AngularVelocityComponent(message.AngularVelocity));
         }
     }

KavTest/Engines/Spawners/StaticModelSpawner.cs

@@ -11,7 +11,7 @@ namespace KavTest.Spawners
             var entity = CreateEntity();
 
             AddComponent(entity, new Transform3DComponent(message.Transform));
-            AddComponent(entity, new ModelComponent(message.Model));
+            AddComponent(entity, new ModelComponent(message.Model, true));
         }
     }
 }

KavTest/InstancedModelContainer.cs

@@ -0,0 +1,9 @@
+using Kav;
+
+namespace KavTest
+{
+    public class InstancedModelContainer
+    {
+        public MeshPart CubeModel { get; set; }
+    }
+}

KavTest/KavTestGame.cs

@@ -16,6 +16,7 @@ namespace KavTest
     class KavTestGame : Game
     {
         GraphicsDeviceManager graphics;
+        InstancedModelContainer InstancedModelContainer { get; } = new InstancedModelContainer();
 
         WorldBuilder WorldBuilder { get; } = new WorldBuilder();
         World World { get; set; }
@@ -119,6 +120,10 @@ namespace KavTest
                 )
             );
 
+            InstancedModelContainer.CubeModel = cubeModel.Meshes[0].MeshParts[0];
+            InstancedModelContainer.CubeModel.Albedo = Color.Blue.ToVector3();
+            InstancedModelContainer.CubeModel.DisableAlbedoMap = true;
+
             Texture2D.TextureDataFromStreamEXT(
                 File.OpenRead("Content/Skybox/front.jpg"),
                 out var skyboxSize,
@@ -187,7 +192,7 @@ namespace KavTest
             WorldBuilder.AddEngine(new StaticModelSpawner());
             WorldBuilder.AddEngine(new DirectionalLightSpawner());
             WorldBuilder.AddEngine(new MeshSpriteSpawner());
-            WorldBuilder.AddGeneralRenderer(new SceneRenderer(GraphicsDevice), 0);
+            WorldBuilder.AddGeneralRenderer(new SceneRenderer(GraphicsDevice, InstancedModelContainer), 0);
 
             // WorldBuilder.SendMessage(new RustyBallSpawnMessage(
             //     new Transform3D(new Vector3(0, 0, 0)),
@@ -209,46 +214,51 @@ namespace KavTest
             //     rustyBallModel
             // ));
 
-            WorldBuilder.SendMessage(new StaticModelSpawnMessage(
+            // WorldBuilder.SendMessage(new StaticModelSpawnMessage(
-                new Transform3D(new Vector3(0, -3, 0), Quaternion.Identity, new Vector3(10f, 1f, 10f)),
+            //     new Transform3D(new Vector3(0, -3, 0), Quaternion.Identity, new Vector3(10f, 1f, 10f)),
-                floorModel
+            //     floorModel
-            ));
+            // ));
 
-            WorldBuilder.SendMessage(new StaticModelSpawnMessage(
+            // WorldBuilder.SendMessage(new StaticModelSpawnMessage(
-                new Transform3D(
+            //     new Transform3D(
-                    new Vector3(0, 1, 0),
+            //         new Vector3(0, 1, 0),
-                    Quaternion.CreateFromAxisAngle(
+            //         Quaternion.CreateFromAxisAngle(
-                        Vector3.Right,
+            //             Vector3.Right,
-                        -Microsoft.Xna.Framework.MathHelper.PiOver2
+            //             -Microsoft.Xna.Framework.MathHelper.PiOver2
-                    ),
+            //         ),
-                    new Vector3(1f, 1f, 1f)
+            //         new Vector3(1f, 1f, 1f)
-                ),
+            //     ),
-                redCylinderModel
+            //     redCylinderModel
-            ));
+            // ));
 
-            WorldBuilder.SendMessage(new StaticModelSpawnMessage(
+            // WorldBuilder.SendMessage(new StaticModelSpawnMessage(
-                new Transform3D(
+            //     new Transform3D(
-                    new Vector3(-3, 1, 0),
+            //         new Vector3(-3, 1, 0),
-                    Quaternion.CreateFromAxisAngle(
+            //         Quaternion.CreateFromAxisAngle(
-                        Vector3.Right,
+            //             Vector3.Right,
-                        -Microsoft.Xna.Framework.MathHelper.PiOver2
+            //             -Microsoft.Xna.Framework.MathHelper.PiOver2
-                    ),
+            //         ),
-                    new Vector3(1f, 1f, 1f)
+            //         new Vector3(1f, 1f, 1f)
-                ),
+            //     ),
-                blueTorusModel
+            //     blueTorusModel
-            ));
+            // ));
 
-            WorldBuilder.SendMessage(new StaticModelSpawnMessage(
+            for (int i = -10; i < 10; i++)
+            {
+                for (int j = -10; j < 10; j++)
+                {
+                    for (int k = -10; k < 10; k++)
+                    {
+                        var entity = WorldBuilder.CreateEntity();
+                        WorldBuilder.SetComponent(entity, new Transform3DComponent(
                             new Transform3D(
-                    new Vector3(3, 1, 0),
+                                new Vector3(i * 3, j * 3, k * 3)
-                    Quaternion.CreateFromAxisAngle(
+                            )
-                        Vector3.Right,
-                        -Microsoft.Xna.Framework.MathHelper.PiOver2
-                    ),
-                    new Vector3(1f, 1f, 1f)
-                ),
-                cubeModel
                         ));
+                        WorldBuilder.SetComponent(entity, new InstancedCubeComponent());
+                    }
+                }
+            }
 
             WorldBuilder.SendMessage(new MeshSpriteSpawnMessage(
                 new Transform3D(new Vector3(3, 0, 11), Quaternion.CreateFromAxisAngle(Vector3.Up, (float)System.Math.PI), Vector3.One),

KavTest/Renderers/SceneRenderer.cs

@@ -13,6 +13,7 @@ namespace KavTest.Renderers
     {
         private GraphicsDevice GraphicsDevice { get; }
         private SpriteBatch SpriteBatch { get; }
+        private InstancedModelContainer InstancedModelContainer { get; }
 
         private Kav.Renderer Renderer { get; }
 
@@ -26,6 +27,24 @@ namespace KavTest.Renderers
         private RenderTarget2D DeferredTarget { get; }
         private RenderTarget2D BillboardTarget { get; }
 
+        private readonly Dictionary<Kav.MeshPart, List<Matrix>> InstanceMap = new Dictionary<MeshPart, List<Matrix>>();
+
+        private IEnumerable<Matrix> CubeTransforms
+        {
+            get
+            {
+                foreach (var entity in ReadEntitiesAsEnumerable<InstancedCubeComponent>())
+                {
+                    if (HasComponent<Transform3DComponent>(entity))
+                    {
+                        var transformComponent = GetComponent<Transform3DComponent>(entity);
+
+                        yield return transformComponent.Transform.TransformMatrix;
+                    }
+                }
+            }
+        }
+
         private IEnumerable<(Kav.Model, Matrix)> ModelTransforms
         {
             get
@@ -117,9 +136,12 @@ namespace KavTest.Renderers
             }
         }
 
-        public SceneRenderer(GraphicsDevice graphicsDevice)
+        public SceneRenderer(
-        {
+            GraphicsDevice graphicsDevice,
+            InstancedModelContainer instancedModelContainer
+        ) {
             GraphicsDevice = graphicsDevice;
+            InstancedModelContainer = instancedModelContainer;
 
             var renderDimensionsX = GraphicsDevice.PresentationParameters.BackBufferWidth;
             var renderDimensionsY = GraphicsDevice.PresentationParameters.BackBufferHeight;
@@ -220,11 +242,19 @@ namespace KavTest.Renderers
 
                 GraphicsDevice.SetRenderTargets(GBuffer);
                 GraphicsDevice.Clear(ClearOptions.Target | ClearOptions.DepthBuffer, Color.Black, 1f, 0);
+                GraphicsDevice.DepthStencilState = DepthStencilState.Default;
 
-                Renderer.GBufferRender(
+                // Renderer.GBufferRender(
+                //     GBuffer,
+                //     camera,
+                //     ModelTransforms
+                // );
+
+                Renderer.InstancedGBufferRender(
                     GBuffer,
                     camera,
-                    ModelTransforms
+                    InstancedModelContainer.CubeModel,
+                    CubeTransforms
                 );
 
                 GraphicsDevice.SetRenderTarget(DeferredTarget);
@@ -299,5 +329,39 @@ namespace KavTest.Renderers
                 SpriteBatch.End();
             }
         }
+
+        private void CollectInstances()
+        {
+            foreach (var list in InstanceMap.Values)
+            {
+                list.Clear();
+            }
+
+            foreach (var modelEntity in ReadEntities<ModelComponent>())
+            {
+                if (HasComponent<Transform3DComponent>(modelEntity))
+                {
+                    var modelComponent = GetComponent<ModelComponent>(modelEntity);
+                    if (modelComponent.Instanced)
+                    {
+                        var transformComponent = GetComponent<Transform3DComponent>(modelEntity);
+
+                        foreach (var mesh in modelComponent.Model.Meshes)
+                        {
+                            foreach (var meshPart in mesh.MeshParts)
+                            {
+                                if (!InstanceMap.ContainsKey(meshPart))
+                                {
+                                    InstanceMap.Add(meshPart, new List<Matrix>());
+                                }
+                                else
+
+                                InstanceMap[meshPart].Add(transformComponent.Transform.TransformMatrix);
+                            }
+                        }
+                    }
+                }
+            }
+        }
     }
 }