render: process GltfScenes and Node local transforms

Cargo.lock

@@ -1845,7 +1845,9 @@ dependencies = [
  "gltf",
  "image",
  "infer",
+ "instant",
  "lyra-ecs",
+ "lyra-math",
  "mime",
  "notify",
  "notify-debouncer-full",
@@ -3101,7 +3103,6 @@ dependencies = [
  "async-std",
  "fps_counter",
  "lyra-engine",
- "lyra-scripting",
  "tracing",
 ]
 

examples/testbed/Cargo.toml

@@ -6,8 +6,9 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-lyra-engine = { path = "../../", version = "0.0.1", features = ["lua_scripting"] }
+lyra-engine = { path = "../../", version = "0.0.1" }
-lyra-scripting = { path = "../../lyra-scripting", features = ["lua", "teal"] }
+#lyra-engine = { path = "../../", version = "0.0.1", features = ["lua_scripting"] }
+#lyra-scripting = { path = "../../lyra-scripting", features = ["lua", "teal"] }
 #lyra-ecs = { path = "../../lyra-ecs"}
 anyhow = "1.0.75"
 async-std = "1.12.0"

examples/testbed/assets/sponza/.gitignore

@@ -0,0 +1,2 @@
+Sponza*
+Textures

examples/testbed/assets/sponza/README.md

@@ -0,0 +1 @@
+To keep the size of this repository down, the Sponza scene is omitted from this repo. The files were downloaded from https://github.com/toji/sponza-optimized

examples/testbed/src/main.rs

@@ -1,7 +1,7 @@
 use std::ptr::NonNull;
 
-use lyra_engine::{math::{self, Vec3}, math::Transform, input::{KeyCode, ActionHandler, Action, ActionKind, LayoutId, ActionMapping, ActionSource, ActionMappingId, InputActionPlugin, MouseInput, MouseAxis, CommonActionLabel}, game::Game, render::{window::{CursorGrabMode, WindowOptions}, light::{PointLight, directional::DirectionalLight, SpotLight}}, change_tracker::Ct, ecs::{system::{Criteria, CriteriaSchedule, BatchedSystem, IntoSystem}, World, Component}, DeltaTime, scene::{ModelComponent, CameraComponent}, lua::{LuaScriptingPlugin, LuaScript}, Script, ScriptList};
+use lyra_engine::{assets::gltf::Gltf, ecs::{system::{BatchedSystem, Criteria, CriteriaSchedule, IntoSystem}, Component, World}, game::Game, input::{Action, ActionHandler, ActionKind, ActionMapping, ActionMappingId, ActionSource, InputActionPlugin, KeyCode, LayoutId, MouseAxis, MouseInput}, math::{self, Transform, Vec3}, render::light::{directional::DirectionalLight, PointLight, SpotLight}, scene::{CameraComponent, MeshComponent}, DeltaTime};
-use lyra_engine::assets::{ResourceManager, Model};
+use lyra_engine::assets::ResourceManager;
 
 mod free_fly_camera;
 use free_fly_camera::{FreeFlyCameraPlugin, FreeFlyCamera};
@@ -16,6 +16,13 @@ pub enum ActionLabel {
     LookRoll,
 }
 
+const ACTLBL_MOVE_UP_DOWN: &str = "MoveUpDown";
+const ACTLBL_MOVE_LEFT_RIGHT: &str = "MoveLeftRight";
+const ACTLBL_MOVE_FORWARD_BACKWARD: &str = "MoveForwardBackward";
+const ACTLBL_LOOK_LEFT_RIGHT: &str = "LookLeftRight";
+const ACTLBL_LOOK_UP_DOWN: &str = "LookUpDown";
+const ACTLBL_LOOK_ROLL: &str = "LookRoll";
+
 struct FixedTimestep {
     max_tps: u32,
     fixed_time: f32,
@@ -86,30 +93,45 @@ async fn main() {
         //let diffuse_texture = resman.request::<Texture>("assets/happy-tree.png").unwrap();
         //let antique_camera_model = resman.request::<Model>("assets/AntiqueCamera.glb").unwrap();
         //let cube_model = resman.request::<Model>("assets/cube-texture-bin.glb").unwrap();
-        let cube_model = resman.request::<Model>("assets/texture-sep/texture-sep.gltf").unwrap();
+        let cube_gltf = resman.request::<Gltf>("assets/texture-sep/texture-sep.gltf").unwrap();
-        let crate_model = resman.request::<Model>("assets/crate/crate.gltf").unwrap();
+        let crate_gltf = resman.request::<Gltf>("assets/crate/crate.gltf").unwrap();
-        //let sponza_model = resman.request::<Model>("assets/sponza/Sponza.gltf").unwrap();
+
+        let separate_gltf = resman.request::<Gltf>("assets/pos-testing/separate-nodes-two-cubes.glb").unwrap();
+        drop(resman);
+        
+        let cube_mesh = &cube_gltf.data_ref()
+            .unwrap().meshes[0];
+        let crate_mesh = &crate_gltf.data_ref()
+            .unwrap().meshes[0];
+
+        let separate_scene = &separate_gltf.data_ref()
+            .unwrap().scenes[0];
+
+        /* let sponza_model = resman.request::<Gltf>("assets/sponza/Sponza.gltf").unwrap();
         drop(resman);
 
-        /* world.spawn((
+        let sponza_scene = &sponza_model.data_ref()
-            ModelComponent(antique_camera_model),
+            .unwrap().scenes[0];
-            Transform::from_xyz(0.0, -5.0, -10.0),
-        )); */
 
-        /* world.spawn((
+        world.spawn((
-            ModelComponent(sponza_model),
+            sponza_scene.clone(),
             Transform::from_xyz(0.0, 0.0, 0.0),
         )); */
 
-        {
+        world.spawn((
-            let cube_tran = Transform::from_xyz(-3.5, 0.0, -8.0);
+            separate_scene.clone(),
+            Transform::from_xyz(0.0, -5.0, -10.0),
+        ));
+
+        /* {
+            let cube_tran = Transform::from_xyz(-5.9026427, -1.8953488, -10.0);
             //cube_tran.rotate_y(math::Angle::Degrees(180.0));
             world.spawn((
                 cube_tran,
-                ModelComponent(crate_model.clone()),
+                crate_mesh.clone(),
                 CubeFlag,
             ));
-        }
+        } */
 
         {
             let mut light_tran = Transform::from_xyz(1.5, 2.5, 0.0);
@@ -124,11 +146,11 @@ async fn main() {
                     specular: 1.3,
                 },
                 light_tran,
-                ModelComponent(cube_model.clone()),
+                cube_mesh.clone(),
             ));
         }
 
-        {
+        /* {
             let mut light_tran = Transform::from_xyz(-3.5, 0.2, -4.5);
             light_tran.scale = Vec3::new(0.5, 0.5, 0.5);
             world.spawn((
@@ -146,9 +168,31 @@ async fn main() {
                     specular: 1.0,
                 },
                 Transform::from(light_tran),
-                ModelComponent(cube_model.clone()),
+                cube_mesh.clone(),
             ));
         }
+
+        {
+            let mut light_tran = Transform::from_xyz(2.0, 2.5, -9.5);
+            light_tran.scale = Vec3::new(0.5, 0.5, 0.5);
+            world.spawn((
+                PointLight {
+                    color: Vec3::new(0.0, 0.0, 1.0),
+
+                    intensity: 3.3,
+
+                    constant: 1.0,
+                    linear: 0.09,
+                    quadratic: 0.032,
+                    
+                    ambient: 0.2,
+                    diffuse: 1.0,
+                    specular: 1.3,
+                },
+                Transform::from(light_tran),
+                cube_mesh.clone(),
+            ));
+        } */
         
         /* {
             let mut light_tran = Transform::from_xyz(-5.0, 2.5, -9.5);
@@ -172,28 +216,6 @@ async fn main() {
             ));
         } */
 
-        {
-            let mut light_tran = Transform::from_xyz(2.0, 2.5, -9.5);
-            light_tran.scale = Vec3::new(0.5, 0.5, 0.5);
-            world.spawn((
-                PointLight {
-                    color: Vec3::new(0.0, 0.0, 1.0),
-
-                    intensity: 3.3,
-
-                    constant: 1.0,
-                    linear: 0.09,
-                    quadratic: 0.032,
-                    
-                    ambient: 0.2,
-                    diffuse: 1.0,
-                    specular: 1.3,
-                },
-                Transform::from(light_tran),
-                ModelComponent(cube_model),
-            ));
-        }
-
         let mut camera = CameraComponent::new_3d();
         camera.transform.translation += math::Vec3::new(0.0, 0.0, 5.5);
         world.spawn(( camera, FreeFlyCamera::default() ));
@@ -211,7 +233,7 @@ async fn main() {
 
         Ok(())
     };
-    let fps_plugin = move |game: &mut Game| {
+    let _fps_plugin = move |game: &mut Game| {
         let world = game.world_mut();
         world.add_resource(fps_counter::FPSCounter::new());
     };
@@ -246,54 +268,54 @@ async fn main() {
     };
 
     let action_handler_plugin = |game: &mut Game| {
-        /* let action_handler = ActionHandler::builder()
+        let action_handler = ActionHandler::builder()
             .add_layout(LayoutId::from(0))
             
-            .add_action(CommonActionLabel::MoveForwardBackward, Action::new(ActionKind::Axis))
+            .add_action(ACTLBL_MOVE_FORWARD_BACKWARD, Action::new(ActionKind::Axis))
-            .add_action(CommonActionLabel::MoveLeftRight, Action::new(ActionKind::Axis))
+            .add_action(ACTLBL_MOVE_LEFT_RIGHT, Action::new(ActionKind::Axis))
-            .add_action(CommonActionLabel::MoveUpDown, Action::new(ActionKind::Axis))
+            .add_action(ACTLBL_MOVE_UP_DOWN, Action::new(ActionKind::Axis))
-            .add_action(CommonActionLabel::LookLeftRight, Action::new(ActionKind::Axis))
+            .add_action(ACTLBL_LOOK_LEFT_RIGHT, Action::new(ActionKind::Axis))
-            .add_action(CommonActionLabel::LookUpDown, Action::new(ActionKind::Axis))
+            .add_action(ACTLBL_LOOK_UP_DOWN, Action::new(ActionKind::Axis))
-            .add_action(CommonActionLabel::LookRoll, Action::new(ActionKind::Axis))
+            .add_action(ACTLBL_LOOK_ROLL, Action::new(ActionKind::Axis))
 
             .add_mapping(ActionMapping::builder(LayoutId::from(0), ActionMappingId::from(0))
-                .bind(CommonActionLabel::MoveForwardBackward, &[
+                .bind(ACTLBL_MOVE_FORWARD_BACKWARD, &[
                     ActionSource::Keyboard(KeyCode::W).into_binding_modifier(1.0),
                     ActionSource::Keyboard(KeyCode::S).into_binding_modifier(-1.0)
                 ])
-                .bind(CommonActionLabel::MoveLeftRight, &[
+                .bind(ACTLBL_MOVE_LEFT_RIGHT, &[
                     ActionSource::Keyboard(KeyCode::A).into_binding_modifier(-1.0),
                     ActionSource::Keyboard(KeyCode::D).into_binding_modifier(1.0)
                 ])
-                .bind(CommonActionLabel::MoveUpDown, &[
+                .bind(ACTLBL_MOVE_UP_DOWN, &[
                     ActionSource::Keyboard(KeyCode::C).into_binding_modifier(1.0),
                     ActionSource::Keyboard(KeyCode::Z).into_binding_modifier(-1.0)
                 ])
-                .bind(CommonActionLabel::LookLeftRight, &[
+                .bind(ACTLBL_LOOK_LEFT_RIGHT, &[
                     ActionSource::Mouse(MouseInput::Axis(MouseAxis::X)).into_binding(),
                     ActionSource::Keyboard(KeyCode::Left).into_binding_modifier(-1.0),
                     ActionSource::Keyboard(KeyCode::Right).into_binding_modifier(1.0),
                     //ActionSource::Gamepad(GamepadFormat::DualAxis, GamepadInput::Axis(GamepadAxis::RThumbstickX)).into_binding(),
                 ])
-                .bind(CommonActionLabel::LookUpDown, &[
+                .bind(ACTLBL_LOOK_UP_DOWN, &[
                     ActionSource::Mouse(MouseInput::Axis(MouseAxis::Y)).into_binding(),
                     ActionSource::Keyboard(KeyCode::Up).into_binding_modifier(-1.0),
                     ActionSource::Keyboard(KeyCode::Down).into_binding_modifier(1.0),
                     //ActionSource::Gamepad(GamepadFormat::DualAxis, GamepadInput::Axis(GamepadAxis::RThumbstickY)).into_binding(),
                 ])
-                .bind(CommonActionLabel::LookRoll, &[
+                .bind(ACTLBL_LOOK_ROLL, &[
                     ActionSource::Keyboard(KeyCode::E).into_binding_modifier(-1.0),
                     ActionSource::Keyboard(KeyCode::Q).into_binding_modifier(1.0),
                 ])
                 .finish()
-            );
+            ).finish();
 
         let world = game.world_mut();
-        world.add_resource(action_handler); */
+        world.add_resource(action_handler);
         game.with_plugin(InputActionPlugin);
     };
 
-    let script_test_plugin = |game: &mut Game| {
+    /* let script_test_plugin = |game: &mut Game| {
         game.with_plugin(LuaScriptingPlugin);
 
         let world = game.world_mut();
@@ -306,13 +328,13 @@ async fn main() {
         let scripts = ScriptList::new(vec![script]);
         world.spawn((scripts,));
 
-    };
+    }; */
     
     Game::initialize().await
         .with_plugin(lyra_engine::DefaultPlugins)
         .with_startup_system(setup_sys.into_system())
         .with_plugin(action_handler_plugin)
-        .with_plugin(script_test_plugin)
+        //.with_plugin(script_test_plugin)
         //.with_plugin(fps_plugin)
         .with_plugin(jiggle_plugin)
         .with_plugin(FreeFlyCameraPlugin)

lyra-game/src/render/material.rs

@@ -10,11 +10,11 @@ pub struct MaterialSpecular {
 }
 
 impl MaterialSpecular {
-    pub fn from_resource(device: &wgpu::Device, queue: &wgpu::Queue, bg_layout: Arc<wgpu::BindGroupLayout>, value: &lyra_resource::Specular) -> Self {
+    pub fn from_resource(device: &wgpu::Device, queue: &wgpu::Queue, bg_layout: Arc<wgpu::BindGroupLayout>, value: &lyra_resource::gltf::Specular) -> Self {
-        let tex = value.texture.as_ref().map(|t| t.data_ref())
+        let tex = value.texture.as_ref().and_then(|t| t.data_ref())
             .map(|i| RenderTexture::from_image(device, queue, bg_layout.clone(), &i.image, None).unwrap());
 
-        let color_tex = value.color_texture.as_ref().map(|t| t.data_ref())
+        let color_tex = value.color_texture.as_ref().and_then(|t| t.data_ref())
             .map(|i| RenderTexture::from_image(device, queue, bg_layout, &i.image, None).unwrap());
 
         Self {
@@ -38,8 +38,8 @@ pub struct Material {
 }
 
 impl Material {
-    pub fn from_resource(device: &wgpu::Device, queue: &wgpu::Queue, bg_layout: Arc<wgpu::BindGroupLayout>, value: &lyra_resource::Material) -> Self {
+    pub fn from_resource(device: &wgpu::Device, queue: &wgpu::Queue, bg_layout: Arc<wgpu::BindGroupLayout>, value: &lyra_resource::gltf::Material) -> Self {
-        let diffuse_texture = value.base_color_texture.as_ref().map(|t| t.data_ref())
+        let diffuse_texture = value.base_color_texture.as_ref().and_then(|t| t.data_ref())
             .map(|i| RenderTexture::from_image(device, queue, bg_layout.clone(), &i.image, None).unwrap());
 
         let specular = value.specular.as_ref().map(|s| MaterialSpecular::from_resource(device, queue, bg_layout.clone(), s));

lyra-game/src/render/renderer.rs

@@ -5,10 +5,13 @@ use std::borrow::Cow;
 use glam::Vec3;
 use instant::Instant;
 use itertools::izip;
-use lyra_ecs::Entity;
+use lyra_ecs::query::filter::{Has, Or};
+use lyra_ecs::{Entity, Tick};
 use lyra_ecs::query::{Entities, TickOf};
 use lyra_ecs::World;
-use tracing::{debug, warn};
+use lyra_resource::gltf::GltfScene;
+use tracing::{debug, debug_span, warn};
+use uuid::Uuid;
 use wgpu::{BindGroupLayout, Limits};
 use wgpu::util::DeviceExt;
 use winit::window::Window;
@@ -16,7 +19,7 @@ use winit::window::Window;
 use crate::math::Transform;
 use crate::render::material::MaterialUniform;
 use crate::render::render_buffer::BufferWrapperBuilder;
-use crate::scene::{ModelComponent, CameraComponent};
+use crate::scene::CameraComponent;
 
 use super::camera::{RenderCamera, CameraUniform};
 use super::desc_buf_lay::DescVertexBufferLayout;
@@ -28,7 +31,10 @@ use super::transform_buffer_storage::TransformBuffers;
 use super::vertex::Vertex;
 use super::{render_pipeline::FullRenderPipeline, render_buffer::BufferStorage, render_job::RenderJob};
 
-use lyra_resource::Mesh;
+use lyra_resource::{gltf::Mesh, ResHandle};
+
+type MeshHandle = ResHandle<Mesh>;
+type SceneHandle = ResHandle<GltfScene>;
 
 pub trait Renderer {
     fn prepare(&mut self, main_world: &mut World);
@@ -265,16 +271,19 @@ impl BasicRenderer {
         s
     }
 
-    fn update_mesh_buffers(&mut self, _entity: Entity, mesh: &Mesh) {
+    /// Checks if the mesh buffers in the GPU need to be updated.
-        if let Some(buffers) = self.mesh_buffers.get_mut(&mesh.uuid) {
+    fn check_mesh_buffers(&mut self, _entity: Entity, meshh: &ResHandle<Mesh>) {
+        let mesh_uuid = meshh.uuid();
+
+        if let (Some(mesh), Some(buffers)) = (meshh.data_ref(), self.mesh_buffers.get_mut(&mesh_uuid)) {
             // check if the buffer sizes dont match. If they dont, completely remake the buffers
             let vertices = mesh.position().unwrap();
             if buffers.buffer_vertex.count() != vertices.len() {
-                debug!("Recreating buffers for mesh {}", mesh.uuid.to_string());
+                debug!("Recreating buffers for mesh {}", mesh_uuid.to_string());
-                let (vert, idx) = self.create_vertex_index_buffers(mesh);
+                let (vert, idx) = self.create_vertex_index_buffers(&mesh);
 
                 // have to re-get buffers because of borrow checker
-                let buffers = self.mesh_buffers.get_mut(&mesh.uuid).unwrap();
+                let buffers = self.mesh_buffers.get_mut(&mesh_uuid).unwrap();
                 buffers.buffer_indices = idx;
                 buffers.buffer_vertex = vert;
 
@@ -292,8 +301,8 @@ impl BasicRenderer {
             if let Some(index_buffer) = buffers.buffer_indices.as_ref() {
                 let aligned_indices = match mesh.indices.as_ref().unwrap() {
                     // U16 indices need to be aligned to u32, for wpgu, which are 4-bytes in size.
-                    lyra_resource::MeshIndices::U16(v) => bytemuck::pod_align_to::<u16, u32>(v).1,
+                    lyra_resource::gltf::MeshIndices::U16(v) => bytemuck::pod_align_to::<u16, u32>(v).1,
-                    lyra_resource::MeshIndices::U32(v) => bytemuck::pod_align_to::<u32, u32>(v).1,
+                    lyra_resource::gltf::MeshIndices::U32(v) => bytemuck::pod_align_to::<u32, u32>(v).1,
                 };
                 
                 let index_buffer = index_buffer.1.buffer();
@@ -327,8 +336,8 @@ impl BasicRenderer {
         let indices = match mesh.indices.as_ref() {
             Some(indices) => {
                 let (idx_type, len, contents) = match indices {
-                    lyra_resource::MeshIndices::U16(v) => (wgpu::IndexFormat::Uint16, v.len(), bytemuck::cast_slice(v)),
+                    lyra_resource::gltf::MeshIndices::U16(v) => (wgpu::IndexFormat::Uint16, v.len(), bytemuck::cast_slice(v)),
-                    lyra_resource::MeshIndices::U32(v) => (wgpu::IndexFormat::Uint32, v.len(), bytemuck::cast_slice(v)),
+                    lyra_resource::gltf::MeshIndices::U32(v) => (wgpu::IndexFormat::Uint32, v.len(), bytemuck::cast_slice(v)),
                 };
 
                 let index_buffer = self.device.create_buffer_init(
@@ -354,7 +363,11 @@ impl BasicRenderer {
     fn create_mesh_buffers(&mut self, mesh: &Mesh) -> MeshBufferStorage {
         let (vertex_buffer, buffer_indices) = self.create_vertex_index_buffers(mesh);
 
-        let material = Material::from_resource(&self.device, &self.queue, self.bgl_texture.clone(), &mesh.material());
+        let material = mesh.material.as_ref()
+            .expect("Material resource not loaded yet")
+            .data_ref()
+            .unwrap();
+        let material = Material::from_resource(&self.device, &self.queue, self.bgl_texture.clone(), &material);
         let uni = MaterialUniform::from(&material);
         self.queue.write_buffer(&self.material_buffer.inner_buf, 0, bytemuck::bytes_of(&uni));
         debug!("Wrote material to buffer");
@@ -367,7 +380,7 @@ impl BasicRenderer {
     }
 
     /// Processes the mesh for the renderer, storing and creating buffers as needed. Returns true if a new mesh was processed.
-    fn process_mesh(&mut self, entity: Entity, transform: Transform, mesh: &Mesh) -> bool {
+    fn process_mesh(&mut self, entity: Entity, transform: Transform, mesh: &Mesh, mesh_uuid: Uuid) -> bool {
         if self.transform_buffers.should_expand() {
             self.transform_buffers.expand_buffers(&self.device);
         }
@@ -376,15 +389,48 @@ impl BasicRenderer {
             entity, || ( transform.calculate_mat4(), glam::Mat3::from_quat(transform.rotation) ));
 
         #[allow(clippy::map_entry)]
-        if !self.mesh_buffers.contains_key(&mesh.uuid) {
+        if !self.mesh_buffers.contains_key(&mesh_uuid) {
             // create the mesh's buffers
             let buffers = self.create_mesh_buffers(mesh);
-            self.mesh_buffers.insert(mesh.uuid, buffers);
+            self.mesh_buffers.insert(mesh_uuid, buffers);
-            self.entity_meshes.insert(entity, mesh.uuid);
+            self.entity_meshes.insert(entity, mesh_uuid);
 
             true
         } else { false }
     }
+
+    fn interpolate_transforms(&mut self, now: Instant, last_epoch: Tick, entity: Entity, transform: &Transform, transform_epoch: Tick) -> Transform {
+        let cached = match self.entity_last_transforms.get_mut(&entity) {
+            Some(last) if transform_epoch == last_epoch => {
+                last.from_transform = last.to_transform;
+                last.to_transform = *transform;
+                last.last_updated_at = Some(last.cached_at);
+                last.cached_at = now;
+
+                last.clone()
+            },
+            Some(last) => last.clone(),
+            None => {
+                let cached = CachedTransform {
+                    last_updated_at: None,
+                    cached_at: now,
+                    from_transform: *transform,
+                    to_transform: *transform,
+                };
+                self.entity_last_transforms.insert(entity, cached.clone());
+                cached
+            }
+        };
+        
+        let fixed_time = match cached.last_updated_at {
+            Some(last_updated_at) => cached.cached_at - last_updated_at,
+            None => now - cached.cached_at
+        }.as_secs_f32();
+        let accumulator = (now - cached.cached_at).as_secs_f32();
+        let alpha = accumulator / fixed_time;
+
+        cached.from_transform.lerp(cached.to_transform, alpha)
+    }
 }
 
 impl Renderer for BasicRenderer {
@@ -395,57 +441,71 @@ impl Renderer for BasicRenderer {
         
         let now_inst = Instant::now();
         
-        for (entity, model, model_epoch, transform, transform_epoch) in main_world.view_iter::<(Entities, &ModelComponent, TickOf<ModelComponent>, &Transform, TickOf<Transform>)>() {
+        let view = main_world.filtered_view_iter::<(Entities, &Transform, TickOf<Transform>), Or<Has<MeshHandle>, Has<SceneHandle>>>();
+        for (entity, transform, transform_epoch) in view {
             alive_entities.insert(entity);
 
-            let cached = match self.entity_last_transforms.get_mut(&entity) {
+            let mesh_view = main_world.view_one::<(&MeshHandle, TickOf<MeshHandle>)>(entity);
-                Some(last) if transform_epoch == last_epoch => {
+            if let Some((mesh_han, mesh_epoch)) = mesh_view.get() {
-                    last.from_transform = last.to_transform;
+                let interop_pos = self.interpolate_transforms(now_inst, last_epoch, entity, &transform, transform_epoch);
-                    last.to_transform = *transform;
-                    last.last_updated_at = Some(last.cached_at);
-                    last.cached_at = now_inst;
 
-                    last.clone()
+                if let Some(mesh) = mesh_han.data_ref() {
-                },
+                    // if process mesh did not just create a new mesh, and the epoch
-                Some(last) => last.clone(),
+                    // shows that the scene has changed, verify that the mesh buffers
-                None => {
+                    // dont need to be resent to the gpu.
-                    let cached = CachedTransform {
+                    if !self.process_mesh(entity, interop_pos, &*mesh, mesh_han.uuid())
-                        last_updated_at: None,
+                            && mesh_epoch == last_epoch {
-                        cached_at: now_inst,
+                        self.check_mesh_buffers(entity, &mesh_han);
-                        from_transform: *transform,
+                    }
-                        to_transform: *transform,
+                    
-                    };
+                    let material = mesh.material.as_ref().unwrap()
-                    self.entity_last_transforms.insert(entity, cached.clone());
+                        .data_ref().unwrap();
-                    cached
+                    let shader = material.shader_uuid.unwrap_or(0);
+                    let job = RenderJob::new(entity, shader, mesh_han.uuid(), interop_pos);
+                    self.render_jobs.push_back(job);
                 }
-            };
+            }
-            //debug!("Transform: {:?}, comp: {:?}", cached.to_transform.translation, transform.transform.translation);
-            
-            let fixed_time = match cached.last_updated_at {
-                Some(last_updated_at) => cached.cached_at - last_updated_at,
-                None => now_inst - cached.cached_at
-            }.as_secs_f32();
-            let accumulator = (now_inst - cached.cached_at).as_secs_f32();
-            let alpha = accumulator / fixed_time;
 
-            let transform_val = cached.from_transform.lerp(cached.to_transform, alpha);
+            let scene_view = main_world.view_one::<(&SceneHandle, TickOf<SceneHandle>)>(entity);
+            if let Some((scene_han, scene_epoch)) = scene_view.get() {
+                // TODO: Rendering scenes
 
-            let model = model.data_ref();
+                let scene_scope = debug_span!("scene", uuid = scene_han.uuid().to_string());
-            for mesh in model.meshes.iter() {
+                let _enter = scene_scope.enter();
-                if !self.process_mesh(entity, transform_val, mesh) && model_epoch == last_epoch {
+
-                    self.update_mesh_buffers(entity, mesh);
+                if let Some(scene) = scene_han.data_ref() {
+                    let interop_pos = self.interpolate_transforms(now_inst, last_epoch, entity, &transform, transform_epoch);
+                    let meshes = scene.collect_world_meshes();
+
+                    for (mesh_han, mesh_pos) in meshes.into_iter() {
+                        if let Some(mesh) = mesh_han.data_ref() {
+                            let mesh_interp = interop_pos + mesh_pos;
+
+                            let mesh_scope = debug_span!("mesh", uuid = mesh_han.uuid().to_string());
+                            let _enter = mesh_scope.enter();
+
+                            debug!("mesh at {:?}", mesh_interp.translation);
+
+                            // if process mesh did not just create a new mesh, and the epoch
+                            // shows that the scene has changed, verify that the mesh buffers
+                            // dont need to be resent to the gpu.
+                            if !self.process_mesh(entity, mesh_interp, &*mesh, mesh_han.uuid())
+                                    && scene_epoch == last_epoch {
+                                self.check_mesh_buffers(entity, &mesh_han);
+                                debug!("updating mesh buffers");
+                            }
+                            
+                            let material = mesh.material.as_ref().unwrap()
+                                .data_ref().unwrap();
+                            let shader = material.shader_uuid.unwrap_or(0);
+                            let job = RenderJob::new(entity, shader, mesh_han.uuid(), interop_pos);
+                            self.render_jobs.push_back(job);
+                        }
+                    }
                 }
-                
-                let shader = mesh.material().shader_uuid.unwrap_or(0);
-                let job = RenderJob::new(entity, shader, mesh.uuid, transform_val);
-                self.render_jobs.push_back(job);
             }
         }
 
-        /* for (entity, mesh, mesh_epoch, transform) in main_world.query::<(Entities, &MeshComponent, EpochOf<MeshComponent>, &TransformComponent)>().iter() {
-            debug!("TODO: Process MeshComponents"); // TODO: Process MeshComponents
-        } */
-
         // collect dead entities
         self.transform_buffers.tick();
         

lyra-game/src/render/texture.rs

@@ -5,25 +5,6 @@ use lyra_resource::{ResHandle, Texture};
 
 use super::render_buffer::BindGroupPair;
 
-/* #[derive(Clone)]
-pub struct Texture {
-    texture_id: u32,
-    pub img: image::DynamicImage,
-}
-
-impl Texture {
-    pub fn from_bytes(bytes: &[u8]) -> anyhow::Result<Self> {
-        let img = image::load_from_memory(bytes)?;
-
-        Ok(Self {
-            texture_id: 0,
-            img,
-        })
-    }
-} */
-
-
-
 #[allow(dead_code)]
 pub struct RenderTexture {
     pub inner_texture: wgpu::Texture,
@@ -153,8 +134,12 @@ impl RenderTexture {
         })
     }
 
-    pub fn update_texture(&mut self, _device: &wgpu::Device, queue: &wgpu::Queue, texture: &Arc<ResHandle<Texture>>) {
+    /// Updates the texture on the gpu with the provided texture.
-        let texture = &texture.data_ref().image;
+    /// 
+    /// # Panics
+    /// Panics if `texture` is not loaded
+    pub fn update_texture(&mut self, _device: &wgpu::Device, queue: &wgpu::Queue, texture: &ResHandle<Texture>) {
+        let texture = &texture.data_ref().unwrap().image;
         let rgba = texture.to_rgba8();
         let dimensions = texture.dimensions();
         let size = wgpu::Extent3d {

lyra-game/src/scene/mesh.rs

@@ -1,15 +1,37 @@
 use lyra_ecs::Component;
-use lyra_resource::Mesh;
+use lyra_reflect::Reflect;
+use lyra_resource::{gltf::Mesh, ResHandle};
 
-#[derive(Clone, Component)]
+#[derive(Clone, Component, Reflect)]
 pub struct MeshComponent {
-    pub mesh: Mesh,
+    #[reflect(skip)]
+    pub mesh: ResHandle<Mesh>,
+}
+
+impl From<ResHandle<Mesh>> for MeshComponent {
+    fn from(value: ResHandle<Mesh>) -> Self {
+        Self {
+            mesh: value
+        }
+    }
+}
+
+impl std::ops::Deref for MeshComponent {
+    type Target = ResHandle<Mesh>;
+
+    fn deref(&self) -> &Self::Target {
+        &self.mesh
+    }
+}
+
+impl std::ops::DerefMut for MeshComponent {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.mesh
+    }
 }
 
 impl MeshComponent {
-    pub fn new(mesh: Mesh) -> Self {
+    pub fn new(mesh: ResHandle<Mesh>) -> Self {
-        Self {
+        Self::from(mesh)
-            mesh,
-        }
     }
 }

lyra-game/src/scene/mod.rs

@@ -1,9 +1,6 @@
 pub mod mesh;
 pub use mesh::*;
 
-pub mod model;
-pub use model::*;
-
 pub mod camera;
 pub use camera::*;
 

lyra-game/src/scene/model.rs

@@ -1,41 +0,0 @@
-use lyra_ecs::Component;
-use lyra_reflect::Reflect;
-use lyra_resource::ResHandle;
-
-use crate::assets::Model;
-
-#[derive(Clone, Component, Reflect)]
-pub struct ModelComponent(#[reflect(skip)] pub ResHandle<Model>);
-
-impl From<ResHandle<Model>> for ModelComponent {
-    fn from(value: ResHandle<Model>) -> Self {
-        ModelComponent(value)
-    }
-}
-
-/* impl From<ResHandle<Model> for ModelComponent {
-
-} */
-
-impl std::ops::Deref for ModelComponent {
-    type Target = ResHandle<Model>;
-
-    fn deref(&self) -> &Self::Target {
-        &self.0
-    }
-}
-
-impl std::ops::DerefMut for ModelComponent {
-    fn deref_mut(&mut self) -> &mut Self::Target {
-        &mut self.0
-    }
-}
-
-/* impl ModelComponent {
-    pub fn new(model, material: Material) -> Self {
-        Self {
-            mesh,
-            material
-        }
-    }
-} */