render: move most of the mesh processing to a MeshPrepare node

Moving that out of the MeshesPass makes the rendering meshes accessible to other passes/nodes. The shadow pass will need access to them which is why this was done now

Cargo.lock

@@ -3075,6 +3075,16 @@ dependencies = [
  "digest",
 ]
 
+[[package]]
+name = "shadows"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "async-std",
+ "lyra-engine",
+ "tracing",
+]
+
 [[package]]
 name = "sharded-slab"
 version = "0.1.7"

Cargo.toml

@@ -5,7 +5,6 @@ edition = "2021"
 
 [workspace]
 members = [
-    "examples/testbed",
     "lyra-resource",
     "lyra-ecs",
     "lyra-reflect",
@@ -14,10 +13,12 @@ members = [
     "lyra-math",
     "lyra-scene",
 
+    "examples/testbed",
     "examples/many-lights",
     "examples/fixed-timestep-rotating-model",
     "examples/lua-scripting",
-    "examples/simple_scene"
+    "examples/simple_scene",
+    "examples/shadows",
 ]
 
 [features]

examples/shadows/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "shadows"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+lyra-engine = { path = "../../", features = ["tracy"] }
+anyhow = "1.0.75"
+async-std = "1.12.0"
+tracing = "0.1.37"

examples/shadows/scripts/test.lua

@@ -0,0 +1,59 @@
+---Return the userdata's name from its metatable
+---@param val userdata
+---@return string
+function udname(val)
+    return getmetatable(val).__name
+end
+
+function on_init()
+    local cube = world:request_res("../assets/cube-texture-embedded.gltf")
+    print("Loaded textured cube (" .. udname(cube) .. ")")
+
+    cube:wait_until_loaded()
+    local scenes = cube:scenes()
+    local cube_scene = scenes[1]
+
+    local pos = Transform.from_translation(Vec3.new(0, 0, -8.0))
+
+    local e = world:spawn(pos, cube_scene)
+    print("spawned entity " .. tostring(e))
+end
+
+--[[ function on_first()
+    print("Lua's first function was called")
+end
+
+function on_pre_update()
+    print("Lua's pre-update function was called")
+end ]]
+
+function on_update()
+    --[[ ---@type number
+    local dt = world:resource(DeltaTime)
+    local act = world:resource(ActionHandler)
+    ---@type number
+    local move_objs = act:get_axis("ObjectsMoveUpDown")
+
+    world:view(function (t)
+        if move_objs ~= nil then
+            t:translate(0, move_objs * 0.35 * dt, 0)
+            return t
+        end
+    end, Transform) ]]
+
+    ---@type number
+    local dt = world:resource(DeltaTime)
+
+    world:view(function (t)
+        t:translate(0, 0.15 * dt, 0)
+        return t
+    end, Transform)
+end
+
+--[[ function on_post_update()
+    print("Lua's post-update function was called")
+end
+
+function on_last()
+    print("Lua's last function was called")
+end ]]

examples/shadows/src/main.rs

@@ -0,0 +1,165 @@
+use lyra_engine::{
+    assets::{gltf::Gltf, ResourceManager},
+    game::Game,
+    input::{
+        Action, ActionHandler, ActionKind, ActionMapping, ActionMappingId, ActionSource,
+        InputActionPlugin, KeyCode, LayoutId, MouseAxis, MouseInput,
+    },
+    math::{self, Transform, Vec3},
+    render::light::directional::DirectionalLight,
+    scene::{
+        CameraComponent, FreeFlyCamera, FreeFlyCameraPlugin, WorldTransform,
+        ACTLBL_LOOK_LEFT_RIGHT, ACTLBL_LOOK_ROLL, ACTLBL_LOOK_UP_DOWN,
+        ACTLBL_MOVE_FORWARD_BACKWARD, ACTLBL_MOVE_LEFT_RIGHT, ACTLBL_MOVE_UP_DOWN,
+    },
+};
+
+#[async_std::main]
+async fn main() {
+    let action_handler_plugin = |game: &mut Game| {
+        let action_handler = ActionHandler::builder()
+            .add_layout(LayoutId::from(0))
+            .add_action(ACTLBL_MOVE_FORWARD_BACKWARD, Action::new(ActionKind::Axis))
+            .add_action(ACTLBL_MOVE_LEFT_RIGHT, Action::new(ActionKind::Axis))
+            .add_action(ACTLBL_MOVE_UP_DOWN, Action::new(ActionKind::Axis))
+            .add_action(ACTLBL_LOOK_LEFT_RIGHT, Action::new(ActionKind::Axis))
+            .add_action(ACTLBL_LOOK_UP_DOWN, Action::new(ActionKind::Axis))
+            .add_action(ACTLBL_LOOK_ROLL, Action::new(ActionKind::Axis))
+            .add_action("Debug", Action::new(ActionKind::Button))
+            .add_mapping(
+                ActionMapping::builder(LayoutId::from(0), ActionMappingId::from(0))
+                    .bind(
+                        ACTLBL_MOVE_FORWARD_BACKWARD,
+                        &[
+                            ActionSource::Keyboard(KeyCode::W).into_binding_modifier(1.0),
+                            ActionSource::Keyboard(KeyCode::S).into_binding_modifier(-1.0),
+                        ],
+                    )
+                    .bind(
+                        ACTLBL_MOVE_LEFT_RIGHT,
+                        &[
+                            ActionSource::Keyboard(KeyCode::A).into_binding_modifier(-1.0),
+                            ActionSource::Keyboard(KeyCode::D).into_binding_modifier(1.0),
+                        ],
+                    )
+                    .bind(
+                        ACTLBL_MOVE_UP_DOWN,
+                        &[
+                            ActionSource::Keyboard(KeyCode::C).into_binding_modifier(1.0),
+                            ActionSource::Keyboard(KeyCode::Z).into_binding_modifier(-1.0),
+                        ],
+                    )
+                    .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),
+                        ],
+                    )
+                    .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),
+                        ],
+                    )
+                    .bind(
+                        ACTLBL_LOOK_ROLL,
+                        &[
+                            ActionSource::Keyboard(KeyCode::E).into_binding_modifier(-1.0),
+                            ActionSource::Keyboard(KeyCode::Q).into_binding_modifier(1.0),
+                        ],
+                    )
+                    .bind(
+                        "Debug",
+                        &[ActionSource::Keyboard(KeyCode::B).into_binding()],
+                    )
+                    .finish(),
+            )
+            .finish();
+
+        let world = game.world_mut();
+        world.add_resource(action_handler);
+        game.with_plugin(InputActionPlugin);
+    };
+
+    Game::initialize()
+        .await
+        .with_plugin(lyra_engine::DefaultPlugins)
+        .with_plugin(setup_scene_plugin)
+        .with_plugin(action_handler_plugin)
+        //.with_plugin(camera_debug_plugin)
+        .with_plugin(FreeFlyCameraPlugin)
+        .run()
+        .await;
+}
+
+fn setup_scene_plugin(game: &mut Game) {
+    let world = game.world_mut();
+    let resman = world.get_resource_mut::<ResourceManager>();
+    
+    /* let camera_gltf = resman
+        .request::<Gltf>("../assets/AntiqueCamera.glb")
+        .unwrap();
+
+    camera_gltf.wait_recurse_dependencies_load();
+    let camera_mesh = &camera_gltf.data_ref().unwrap().scenes[0];
+    drop(resman);
+
+    world.spawn((
+        camera_mesh.clone(),
+        WorldTransform::default(),
+        Transform::from_xyz(0.0, -5.0, -2.0),
+    )); */
+
+    let cube_gltf = resman
+        .request::<Gltf>("../assets/cube-texture-embedded.gltf")
+        .unwrap();
+
+    cube_gltf.wait_recurse_dependencies_load();
+    let cube_mesh = &cube_gltf.data_ref().unwrap().scenes[0];
+
+    let platform_gltf = resman
+        .request::<Gltf>("../assets/wood-platform.glb")
+        .unwrap();
+
+    platform_gltf.wait_recurse_dependencies_load();
+    let platform_mesh = &platform_gltf.data_ref().unwrap().scenes[0];
+
+    drop(resman);
+
+    world.spawn((
+        cube_mesh.clone(),
+        WorldTransform::default(),
+        Transform::from_xyz(0.0, -2.0, -5.0),
+    ));
+
+    world.spawn((
+        platform_mesh.clone(),
+        WorldTransform::default(),
+        Transform::from_xyz(0.0, -5.0, -5.0),
+    ));
+
+    {
+        let mut light_tran = Transform::from_xyz(-5.5, 2.5, -3.0);
+        light_tran.scale = Vec3::new(0.5, 0.5, 0.5);
+        light_tran.rotate_x(math::Angle::Degrees(-45.0));
+        light_tran.rotate_y(math::Angle::Degrees(-35.0));
+        world.spawn((
+            cube_mesh.clone(),
+            DirectionalLight {
+                enabled: true,
+                color: Vec3::new(1.0, 0.95, 0.9),
+                intensity: 1.0,
+            },
+            light_tran,
+        ));
+    }
+
+    let mut camera = CameraComponent::new_3d();
+    camera.transform.translation += math::Vec3::new(0.0, 2.0, 10.5);
+    camera.transform.rotate_x(math::Angle::Degrees(-17.0));
+    world.spawn((camera, FreeFlyCamera::default()));
+}

lyra-ecs/src/world.rs

@@ -444,6 +444,11 @@ impl World {
             .and_then(|r| r.try_get_mut())
     }
 
+    pub fn try_get_resource_data<T: ResourceObject>(&self) -> Option<ResourceData> {
+        self.resources.get(&TypeId::of::<T>())
+            .map(|r| r.clone())
+    }
+
     /// Increments the TickTracker which is used for tracking changes to components.
     /// 
     /// Most users wont need to call this manually, its done for you through queries and views.

lyra-game/src/render/graph/mod.rs

@@ -95,9 +95,9 @@ struct NodeEntry {
 struct BindGroupEntry {
     label: RenderGraphLabelValue,
     /// BindGroup
-    bg: Rc<wgpu::BindGroup>,
+    bg: Arc<wgpu::BindGroup>,
     /// BindGroupLayout
-    layout: Option<Rc<wgpu::BindGroupLayout>>,
+    layout: Option<Arc<wgpu::BindGroupLayout>>,
 }
 
 #[allow(dead_code)]
@@ -368,22 +368,23 @@ impl RenderGraph {
     }
 
     #[inline(always)]
-    pub fn try_bind_group<L: Into<RenderGraphLabelValue>>(&self, label: L) -> Option<&Rc<wgpu::BindGroup>> {
+    pub fn try_bind_group<L: Into<RenderGraphLabelValue>>(&self, label: L) -> Option<&Arc<wgpu::BindGroup>> {
         self.bind_groups.get(&label.into()).map(|e| &e.bg)
     }
 
     #[inline(always)]
-    pub fn bind_group<L: Into<RenderGraphLabelValue>>(&self, label: L) -> &Rc<wgpu::BindGroup> {
+    pub fn bind_group<L: Into<RenderGraphLabelValue>>(&self, label: L) -> &Arc<wgpu::BindGroup> {
-        self.try_bind_group(label).expect("Unknown id for bind group")
+        let l = label.into();
+        self.try_bind_group(l.clone()).unwrap_or_else(|| panic!("Unknown label '{:?}' for bind group layout", l.clone()))
     }
 
     #[inline(always)]
-    pub fn try_bind_group_layout<L: Into<RenderGraphLabelValue>>(&self, label: L) -> Option<&Rc<wgpu::BindGroupLayout>> {
+    pub fn try_bind_group_layout<L: Into<RenderGraphLabelValue>>(&self, label: L) -> Option<&Arc<wgpu::BindGroupLayout>> {
         self.bind_groups.get(&label.into()).and_then(|e| e.layout.as_ref())
     }
 
     #[inline(always)]
-    pub fn bind_group_layout<L: Into<RenderGraphLabelValue>>(&self, label: L) -> &Rc<wgpu::BindGroupLayout> {
+    pub fn bind_group_layout<L: Into<RenderGraphLabelValue>>(&self, label: L) -> &Arc<wgpu::BindGroupLayout> {
         let l = label.into();
         self.try_bind_group_layout(l.clone())
             .unwrap_or_else(|| panic!("Unknown label '{:?}' for bind group layout", l.clone()))

lyra-game/src/render/graph/node.rs

@@ -1,4 +1,4 @@
-use std::{cell::{Ref, RefCell, RefMut}, num::NonZeroU32, rc::Rc};
+use std::{cell::{Ref, RefCell, RefMut}, num::NonZeroU32, rc::Rc, sync::Arc};
 
 use bind_match::bind_match;
 use lyra_ecs::World;
@@ -54,16 +54,16 @@ pub enum SlotValue {
     /// The value will be set during a later phase of the render graph. To see the type of value
     /// this will be set to, see the slots type.
     Lazy,
-    TextureView(Rc<wgpu::TextureView>),
+    TextureView(Arc<wgpu::TextureView>),
     Sampler(Rc<wgpu::Sampler>),
     Texture(Rc<wgpu::Texture>),
-    Buffer(Rc<wgpu::Buffer>),
+    Buffer(Arc<wgpu::Buffer>),
     RenderTarget(Rc<RefCell<RenderTarget>>),
     Frame(Rc<RefCell<Option<Frame>>>),
 }
 
 impl SlotValue {
-    pub fn as_texture_view(&self) -> Option<&Rc<wgpu::TextureView>> {
+    pub fn as_texture_view(&self) -> Option<&Arc<wgpu::TextureView>> {
         bind_match!(self, Self::TextureView(v) => v)
     }
 
@@ -75,7 +75,7 @@ impl SlotValue {
         bind_match!(self, Self::Texture(v) => v)
     }
 
-    pub fn as_buffer(&self) -> Option<&Rc<wgpu::Buffer>> {
+    pub fn as_buffer(&self) -> Option<&Arc<wgpu::Buffer>> {
         bind_match!(self, Self::Buffer(v) => v)
     }
 
@@ -189,8 +189,8 @@ pub struct NodeDesc {
     /// This makes the bind groups accessible to other Nodes.
     pub bind_groups: Vec<(
         RenderGraphLabelValue,
-        Rc<wgpu::BindGroup>,
+        Arc<wgpu::BindGroup>,
-        Option<Rc<wgpu::BindGroupLayout>>,
+        Option<Arc<wgpu::BindGroupLayout>>,
     )>,
 }
 
@@ -199,7 +199,7 @@ impl NodeDesc {
     pub fn new(
         pass_type: NodeType,
         pipeline_desc: Option<PipelineDescriptor>,
-        bind_groups: Vec<(&dyn RenderGraphLabel, Rc<wgpu::BindGroup>, Option<Rc<wgpu::BindGroupLayout>>)>,
+        bind_groups: Vec<(&dyn RenderGraphLabel, Arc<wgpu::BindGroup>, Option<Arc<wgpu::BindGroupLayout>>)>,
     ) -> Self {
         Self {
             ty: pass_type,

lyra-game/src/render/graph/passes/base.rs

@@ -1,4 +1,4 @@
-use std::rc::Rc;
+use std::sync::Arc;
 
 use glam::UVec2;
 use lyra_game_derive::RenderGraphLabel;
@@ -56,8 +56,8 @@ impl Node for BasePass {
             .buffer_dynamic_offset(false)
             .contents(&[self.screen_size])
             .finish_parts(graph.device());
-        let screen_size_bgl = Rc::new(screen_size_bgl);
+        let screen_size_bgl = Arc::new(screen_size_bgl);
-        let screen_size_bg = Rc::new(screen_size_bg);
+        let screen_size_bg = Arc::new(screen_size_bg);
 
         let (camera_bgl, camera_bg, camera_buf, _) = BufferWrapper::builder()
             .buffer_usage(wgpu::BufferUsages::UNIFORM | wgpu::BufferUsages::COPY_DST)
@@ -66,17 +66,17 @@ impl Node for BasePass {
             .buffer_dynamic_offset(false)
             .contents(&[CameraUniform::default()])
             .finish_parts(graph.device());
-        let camera_bgl = Rc::new(camera_bgl);
+        let camera_bgl = Arc::new(camera_bgl);
-        let camera_bg = Rc::new(camera_bg);
+        let camera_bg = Arc::new(camera_bg);
 
         // create the depth texture using the utility struct, then take all the required fields
         let mut depth_texture = RenderTexture::create_depth_texture(graph.device(), self.screen_size, "depth_texture");
         depth_texture.create_bind_group(&graph.device);
 
         let dt_bg_pair = depth_texture.bindgroup_pair.unwrap();
-        let depth_texture_bg = Rc::new(dt_bg_pair.bindgroup);
+        let depth_texture_bg = Arc::new(dt_bg_pair.bindgroup);
         let depth_texture_bgl = dt_bg_pair.layout;
-        let depth_texture_view = Rc::new(depth_texture.view);
+        let depth_texture_view = Arc::new(depth_texture.view);
 
         let mut desc = NodeDesc::new(
             NodeType::Node,
@@ -102,12 +102,12 @@ impl Node for BasePass {
         desc.add_buffer_slot(
             BasePassSlots::ScreenSize,
             SlotAttribute::Output,
-            Some(SlotValue::Buffer(Rc::new(screen_size_buf))),
+            Some(SlotValue::Buffer(Arc::new(screen_size_buf))),
         );
         desc.add_buffer_slot(
             BasePassSlots::Camera,
             SlotAttribute::Output,
-            Some(SlotValue::Buffer(Rc::new(camera_buf))),
+            Some(SlotValue::Buffer(Arc::new(camera_buf))),
         );
 
         desc

lyra-game/src/render/graph/passes/fxaa.rs

@@ -1,4 +1,4 @@
-use std::{collections::HashMap, rc::Rc};
+use std::{collections::HashMap, rc::Rc, sync::Arc};
 
 use lyra_game_derive::RenderGraphLabel;
 
@@ -13,7 +13,7 @@ pub struct FxaaPassLabel;
 #[derive(Debug, Default)]
 pub struct FxaaPass {
     target_sampler: Option<wgpu::Sampler>,
-    bgl: Option<Rc<wgpu::BindGroupLayout>>,
+    bgl: Option<Arc<wgpu::BindGroupLayout>>,
     /// Store bind groups for the input textures.
     /// The texture may change due to resizes, or changes to the view target chain
     /// from other nodes.
@@ -54,7 +54,7 @@ impl Node for FxaaPass {
                 },
             ],
         });
-        let bgl = Rc::new(bgl);
+        let bgl = Arc::new(bgl);
         self.bgl = Some(bgl.clone());
         self.target_sampler = Some(device.create_sampler(&wgpu::SamplerDescriptor {
             label: Some("fxaa sampler"),

lyra-game/src/render/graph/passes/light_cull_compute.rs

@@ -1,4 +1,4 @@
-use std::{mem, rc::Rc};
+use std::{mem, rc::Rc, sync::Arc};
 
 use glam::Vec2Swizzles;
 use lyra_ecs::World;
@@ -63,7 +63,7 @@ impl Node for LightCullComputePass {
                 usage: wgpu::BufferUsages::STORAGE | wgpu::BufferUsages::COPY_DST,
             });
 
-        let light_indices_bg_layout = Rc::new(device.create_bind_group_layout(
+        let light_indices_bg_layout = Arc::new(device.create_bind_group_layout(
             &wgpu::BindGroupLayoutDescriptor {
                 entries: &[
                     wgpu::BindGroupLayoutEntry {
@@ -128,7 +128,7 @@ impl Node for LightCullComputePass {
             array_layer_count: None,
         });
 
-        let light_indices_bg = Rc::new(device.create_bind_group(&wgpu::BindGroupDescriptor {
+        let light_indices_bg = Arc::new(device.create_bind_group(&wgpu::BindGroupDescriptor {
             layout: &light_indices_bg_layout,
             entries: &[
                 wgpu::BindGroupEntry {
@@ -194,7 +194,7 @@ impl Node for LightCullComputePass {
         desc.add_buffer_slot(
             LightCullComputePassSlots::IndexCounterBuffer,
             SlotAttribute::Output,
-            Some(SlotValue::Buffer(Rc::new(light_index_counter_buffer))),
+            Some(SlotValue::Buffer(Arc::new(light_index_counter_buffer))),
         );
 
         desc

lyra-game/src/render/graph/passes/mesh_prepare.rs

@@ -0,0 +1,767 @@
+use std::{
+    collections::{HashSet, VecDeque},
+    ops::{Deref, DerefMut},
+    sync::Arc,
+};
+
+use glam::{UVec2, Vec3};
+use image::GenericImageView;
+use itertools::izip;
+use lyra_ecs::{
+    query::{
+        filter::{Has, Not, Or},
+        Entities, Res, ResMut, TickOf,
+    },
+    relation::{ChildOf, RelationOriginComponent},
+    Component, Entity, ResourceObject, World,
+};
+use lyra_game_derive::RenderGraphLabel;
+use lyra_math::Transform;
+use lyra_resource::{gltf::Mesh, ResHandle};
+use lyra_scene::{SceneGraph, WorldTransform};
+use rustc_hash::FxHashMap;
+use tracing::{debug, instrument};
+use uuid::Uuid;
+use wgpu::util::DeviceExt;
+
+use crate::{
+    render::{
+        graph::{Node, NodeDesc, NodeType},
+        render_buffer::BufferStorage,
+        render_job::RenderJob,
+        texture::{res_filter_to_wgpu, res_wrap_to_wgpu},
+        transform_buffer_storage::{TransformBuffers, TransformGroup},
+        vertex::Vertex,
+    },
+    DeltaTime,
+};
+
+type MeshHandle = ResHandle<Mesh>;
+type SceneHandle = ResHandle<SceneGraph>;
+
+pub struct MeshBufferStorage {
+    pub buffer_vertex: BufferStorage,
+    pub buffer_indices: Option<(wgpu::IndexFormat, BufferStorage)>,
+
+    // maybe this should just be a Uuid and the material can be retrieved though
+    // MeshPass's `material_buffers` field?
+    pub material: Option<Arc<GpuMaterial>>,
+}
+
+#[derive(Clone, Debug, Component)]
+struct InterpTransform {
+    last_transform: Transform,
+    alpha: f32,
+}
+
+#[derive(Default, Debug, Clone, Copy, Hash, RenderGraphLabel)]
+pub struct MeshPrepNodeLabel;
+
+#[derive(Debug)]
+pub struct MeshPrepNode {
+    pub material_bgl: Arc<wgpu::BindGroupLayout>,
+}
+
+impl MeshPrepNode {
+    pub fn new(device: &wgpu::Device) -> Self {
+        let bgl = GpuMaterial::create_bind_group_layout(device);
+
+        Self { material_bgl: bgl }
+    }
+
+    /// Checks if the mesh buffers in the GPU need to be updated.
+    #[instrument(skip(self, device, mesh_buffers, queue, mesh_han))]
+    fn check_mesh_buffers(
+        &mut self,
+        device: &wgpu::Device,
+        queue: &wgpu::Queue,
+        mesh_buffers: &mut FxHashMap<uuid::Uuid, MeshBufferStorage>,
+        mesh_han: &ResHandle<Mesh>,
+    ) {
+        let mesh_uuid = mesh_han.uuid();
+
+        if let (Some(mesh), Some(buffers)) = (mesh_han.data_ref(), 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());
+                let (vert, idx) = self.create_vertex_index_buffers(device, &mesh);
+
+                // have to re-get buffers because of borrow checker
+                let buffers = mesh_buffers.get_mut(&mesh_uuid).unwrap();
+                buffers.buffer_indices = idx;
+                buffers.buffer_vertex = vert;
+
+                return;
+            }
+
+            // update vertices
+            let vertex_buffer = buffers.buffer_vertex.buffer();
+            let vertices = vertices.as_slice();
+            // align the vertices to 4 bytes (u32 is 4 bytes, which is wgpu::COPY_BUFFER_ALIGNMENT)
+            let (_, vertices, _) = bytemuck::pod_align_to::<Vec3, u32>(vertices);
+            queue.write_buffer(vertex_buffer, 0, bytemuck::cast_slice(vertices));
+
+            // update the indices if they're given
+            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::gltf::MeshIndices::U16(v) => {
+                        bytemuck::pod_align_to::<u16, u32>(v).1
+                    }
+                    lyra_resource::gltf::MeshIndices::U32(v) => {
+                        bytemuck::pod_align_to::<u32, u32>(v).1
+                    }
+                };
+
+                let index_buffer = index_buffer.1.buffer();
+                queue.write_buffer(index_buffer, 0, bytemuck::cast_slice(aligned_indices));
+            }
+        }
+    }
+
+    #[instrument(skip(self, device, mesh))]
+    fn create_vertex_index_buffers(
+        &mut self,
+        device: &wgpu::Device,
+        mesh: &Mesh,
+    ) -> (BufferStorage, Option<(wgpu::IndexFormat, BufferStorage)>) {
+        let positions = mesh.position().unwrap();
+        let tex_coords: Vec<glam::Vec2> = mesh
+            .tex_coords()
+            .cloned()
+            .unwrap_or_else(|| vec![glam::Vec2::new(0.0, 0.0); positions.len()]);
+        let normals = mesh.normals().unwrap();
+
+        assert!(positions.len() == tex_coords.len() && positions.len() == normals.len());
+
+        let mut vertex_inputs = vec![];
+        for (v, t, n) in izip!(positions.iter(), tex_coords.iter(), normals.iter()) {
+            vertex_inputs.push(Vertex::new(*v, *t, *n));
+        }
+
+        let vertex_buffer = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
+            label: Some("Vertex Buffer"),
+            contents: bytemuck::cast_slice(vertex_inputs.as_slice()), //vertex_combined.as_slice(),
+            usage: wgpu::BufferUsages::VERTEX | wgpu::BufferUsages::COPY_DST,
+        });
+        let vertex_buffer = BufferStorage::new(vertex_buffer, 0, vertex_inputs.len());
+
+        let indices = match mesh.indices.as_ref() {
+            Some(indices) => {
+                let (idx_type, len, contents) = match indices {
+                    lyra_resource::gltf::MeshIndices::U16(v) => {
+                        (wgpu::IndexFormat::Uint16, v.len(), bytemuck::cast_slice(v))
+                    }
+                    lyra_resource::gltf::MeshIndices::U32(v) => {
+                        (wgpu::IndexFormat::Uint32, v.len(), bytemuck::cast_slice(v))
+                    }
+                };
+
+                let index_buffer = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
+                    label: Some("Index Buffer"),
+                    contents,
+                    usage: wgpu::BufferUsages::INDEX | wgpu::BufferUsages::COPY_DST,
+                });
+
+                let buffer_indices = BufferStorage::new(index_buffer, 0, len);
+
+                Some((idx_type, buffer_indices))
+            }
+            None => None,
+        };
+
+        (vertex_buffer, indices)
+    }
+
+    #[instrument(skip(self, device, queue, material_buffers, mesh))]
+    fn create_mesh_buffers(
+        &mut self,
+        device: &wgpu::Device,
+        queue: &wgpu::Queue,
+        material_buffers: &mut RenderAssets<Arc<GpuMaterial>>,
+        mesh: &Mesh,
+    ) -> MeshBufferStorage {
+        let (vertex_buffer, buffer_indices) = self.create_vertex_index_buffers(device, mesh);
+
+        let material = mesh
+            .material
+            .as_ref()
+            .expect("Material resource not loaded yet");
+        let material_ref = material.data_ref().unwrap();
+
+        let material = material_buffers.entry(material.uuid()).or_insert_with(|| {
+            debug!(
+                uuid = material.uuid().to_string(),
+                "Sending material to gpu"
+            );
+            Arc::new(GpuMaterial::from_resource(
+                device,
+                queue,
+                &self.material_bgl,
+                &material_ref,
+            ))
+        });
+
+        MeshBufferStorage {
+            buffer_vertex: vertex_buffer,
+            buffer_indices,
+            material: Some(material.clone()),
+        }
+    }
+
+    /// Processes the mesh for the renderer, storing and creating buffers as needed. Returns true if a new mesh was processed.
+    #[instrument(skip(
+        self,
+        device,
+        queue,
+        mesh_buffers,
+        material_buffers,
+        entity_meshes,
+        mesh,
+        entity
+    ))]
+    fn process_mesh(
+        &mut self,
+        device: &wgpu::Device,
+        queue: &wgpu::Queue,
+        mesh_buffers: &mut RenderAssets<MeshBufferStorage>,
+        material_buffers: &mut RenderAssets<Arc<GpuMaterial>>,
+        entity_meshes: &mut FxHashMap<Entity, uuid::Uuid>,
+        entity: Entity,
+        mesh: &Mesh,
+        mesh_uuid: Uuid,
+    ) -> bool {
+        #[allow(clippy::map_entry)]
+        if !mesh_buffers.contains_key(&mesh_uuid) {
+            // create the mesh's buffers
+            let buffers = self.create_mesh_buffers(device, queue, material_buffers, mesh);
+            mesh_buffers.insert(mesh_uuid, buffers);
+            entity_meshes.insert(entity, mesh_uuid);
+
+            true
+        } else {
+            false
+        }
+    }
+
+    /// If the resource does not exist in the world, add the default
+    fn try_init_resource<T: ResourceObject + Default>(world: &mut World) {
+        if !world.has_resource::<T>() {
+            world.add_resource_default::<T>();
+        }
+    }
+}
+
+impl Node for MeshPrepNode {
+    fn desc(
+        &mut self,
+        _: &mut crate::render::graph::RenderGraph,
+    ) -> crate::render::graph::NodeDesc {
+        NodeDesc::new(NodeType::Node, None, vec![])
+    }
+
+    fn prepare(
+        &mut self,
+        _: &mut crate::render::graph::RenderGraph,
+        world: &mut lyra_ecs::World,
+        context: &mut crate::render::graph::RenderGraphContext,
+    ) {
+        let device = &context.device;
+        let queue = &context.queue;
+        let render_limits = device.limits();
+
+        let last_epoch = world.current_tick();
+        let mut alive_entities = HashSet::new();
+
+        {
+            // prepare the world with resources
+            if !world.has_resource::<TransformBuffers>() {
+                let buffers = TransformBuffers::new(device);
+                world.add_resource(buffers);
+            }
+            Self::try_init_resource::<RenderMeshes>(world);
+            Self::try_init_resource::<RenderAssets<MeshBufferStorage>>(world);
+            Self::try_init_resource::<RenderAssets<Arc<GpuMaterial>>>(world);
+            Self::try_init_resource::<FxHashMap<Entity, uuid::Uuid>>(world);
+
+            let mut render_meshes = world.get_resource_mut::<RenderMeshes>();
+            render_meshes.clear();
+        }
+
+        let view = world.view_iter::<(
+            Entities,
+            &Transform,
+            TickOf<Transform>,
+            Or<(&MeshHandle, TickOf<MeshHandle>), (&SceneHandle, TickOf<SceneHandle>)>,
+            Option<&mut InterpTransform>,
+            Res<DeltaTime>,
+            ResMut<TransformBuffers>,
+            ResMut<RenderMeshes>,
+            ResMut<RenderAssets<MeshBufferStorage>>,
+            ResMut<RenderAssets<Arc<GpuMaterial>>>,
+            ResMut<FxHashMap<Entity, uuid::Uuid>>,
+        )>();
+
+        // used to store InterpTransform components to add to entities later
+        let mut component_queue: Vec<(Entity, InterpTransform)> = vec![];
+
+        for (
+            entity,
+            transform,
+            _transform_epoch,
+            (mesh_pair, scene_pair),
+            interp_tran,
+            delta_time,
+            mut transforms,
+            mut render_meshes,
+            mut mesh_buffers,
+            mut material_buffers,
+            mut entity_meshes,
+        ) in view
+        {
+            alive_entities.insert(entity);
+
+            // Interpolate the transform for this entity using a component.
+            // If the entity does not have the component then it will be queued to be added
+            // to it after all the entities are prepared for rendering.
+            let interp_transform = match interp_tran {
+                Some(mut interp_transform) => {
+                    // found in https://youtu.be/YJB1QnEmlTs?t=472
+                    interp_transform.alpha = 1.0 - interp_transform.alpha.powf(**delta_time);
+
+                    interp_transform.last_transform = interp_transform
+                        .last_transform
+                        .lerp(*transform, interp_transform.alpha);
+                    interp_transform.last_transform
+                }
+                None => {
+                    let interp = InterpTransform {
+                        last_transform: *transform,
+                        alpha: 0.5,
+                    };
+                    component_queue.push((entity, interp));
+
+                    *transform
+                }
+            };
+
+            {
+                // expand the transform buffers if they need to be.
+                // this is done in its own scope to avoid multiple mutable references to self at
+                // once; aka, make the borrow checker happy
+                if transforms.needs_expand() {
+                    debug!("Expanding transform buffers");
+                    transforms.expand_buffers(device);
+                }
+            }
+
+            if let Some((mesh_han, mesh_epoch)) = mesh_pair {
+                if let Some(mesh) = mesh_han.data_ref() {
+                    // 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(
+                        device,
+                        queue,
+                        &mut mesh_buffers,
+                        &mut material_buffers,
+                        &mut entity_meshes,
+                        entity,
+                        &mesh,
+                        mesh_han.uuid(),
+                    ) && mesh_epoch == last_epoch
+                    {
+                        self.check_mesh_buffers(device, queue, &mut mesh_buffers, &mesh_han);
+                    }
+
+                    let group = TransformGroup::EntityRes(entity, mesh_han.uuid());
+                    let transform_id = transforms.update_or_push(
+                        device,
+                        queue,
+                        &render_limits,
+                        group,
+                        interp_transform.calculate_mat4(),
+                        glam::Mat3::from_quat(interp_transform.rotation),
+                    );
+
+                    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(), transform_id);
+                    render_meshes.push_back(job);
+                }
+            }
+
+            if let Some((scene_han, scene_epoch)) = scene_pair {
+                if let Some(scene) = scene_han.data_ref() {
+                    if scene_epoch == last_epoch {
+                        let view = scene.world().view::<(
+                            Entities,
+                            &mut WorldTransform,
+                            &Transform,
+                            Not<Has<RelationOriginComponent<ChildOf>>>,
+                        )>();
+                        lyra_scene::system_update_world_transforms(scene.world(), view).unwrap();
+                    }
+
+                    for (mesh_han, pos) in
+                        scene.world().view_iter::<(&MeshHandle, &WorldTransform)>()
+                    {
+                        if let Some(mesh) = mesh_han.data_ref() {
+                            let mesh_interpo = interp_transform + **pos;
+
+                            // 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(
+                                device,
+                                queue,
+                                &mut mesh_buffers,
+                                &mut material_buffers,
+                                &mut entity_meshes,
+                                entity,
+                                &mesh,
+                                mesh_han.uuid(),
+                            ) && scene_epoch == last_epoch
+                            {
+                                self.check_mesh_buffers(
+                                    device,
+                                    queue,
+                                    &mut mesh_buffers,
+                                    &mesh_han,
+                                );
+                            }
+
+                            let scene_mesh_group =
+                                TransformGroup::Res(scene_han.uuid(), mesh_han.uuid());
+                            let group = TransformGroup::OwnedGroup(entity, scene_mesh_group.into());
+                            let transform_id = transforms.update_or_push(
+                                device,
+                                queue,
+                                &render_limits,
+                                group,
+                                mesh_interpo.calculate_mat4(),
+                                glam::Mat3::from_quat(mesh_interpo.rotation),
+                            );
+
+                            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(), transform_id);
+                            render_meshes.push_back(job);
+                        }
+                    }
+                }
+            }
+        }
+
+        for (en, interp) in component_queue {
+            world.insert(en, interp);
+        }
+
+        let mut transforms = world.get_resource_mut::<TransformBuffers>();
+        transforms.send_to_gpu(queue);
+    }
+
+    fn execute(
+        &mut self,
+        _: &mut crate::render::graph::RenderGraph,
+        _: &crate::render::graph::NodeDesc,
+        _: &mut crate::render::graph::RenderGraphContext,
+    ) {
+    }
+}
+
+#[repr(transparent)]
+pub struct RenderAssets<T>(FxHashMap<Uuid, T>);
+
+impl<T> Deref for RenderAssets<T> {
+    type Target = FxHashMap<Uuid, T>;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl<T> DerefMut for RenderAssets<T> {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.0
+    }
+}
+
+impl<T> Default for RenderAssets<T> {
+    fn default() -> Self {
+        Self(Default::default())
+    }
+}
+
+impl<T> RenderAssets<T> {
+    pub fn new() -> Self {
+        Self::default()
+    }
+}
+
+#[allow(dead_code)]
+pub struct GpuMaterial {
+    pub bind_group: Arc<wgpu::BindGroup>,
+    bind_group_layout: Arc<wgpu::BindGroupLayout>,
+    material_properties_buffer: wgpu::Buffer,
+    diffuse_texture: wgpu::Texture,
+    diffuse_texture_sampler: wgpu::Sampler,
+    /* specular_texture: wgpu::Texture,
+    specular_texture_sampler: wgpu::Sampler, */
+}
+
+impl GpuMaterial {
+    fn create_bind_group_layout(device: &wgpu::Device) -> Arc<wgpu::BindGroupLayout> {
+        Arc::new(
+            device.create_bind_group_layout(&wgpu::BindGroupLayoutDescriptor {
+                label: Some("bgl_material"),
+                entries: &[
+                    // material properties
+                    wgpu::BindGroupLayoutEntry {
+                        binding: 0,
+                        visibility: wgpu::ShaderStages::FRAGMENT,
+                        ty: wgpu::BindingType::Buffer {
+                            ty: wgpu::BufferBindingType::Uniform,
+                            has_dynamic_offset: false,
+                            min_binding_size: None, /* Some(
+                                                        NonZeroU64::new(mem::size_of::<MaterialPropertiesUniform>() as _)
+                                                            .unwrap(),
+                                                    ) */
+                        },
+                        count: None,
+                    },
+                    // diffuse texture
+                    wgpu::BindGroupLayoutEntry {
+                        binding: 1,
+                        visibility: wgpu::ShaderStages::FRAGMENT,
+                        ty: wgpu::BindingType::Texture {
+                            sample_type: wgpu::TextureSampleType::Float { filterable: true },
+                            view_dimension: wgpu::TextureViewDimension::D2,
+                            multisampled: false,
+                        },
+                        count: None,
+                    },
+                    // diffuse texture sampler
+                    wgpu::BindGroupLayoutEntry {
+                        binding: 2,
+                        visibility: wgpu::ShaderStages::FRAGMENT,
+                        ty: wgpu::BindingType::Sampler(wgpu::SamplerBindingType::Filtering),
+                        count: None,
+                    },
+                    // specular texture
+                    /* wgpu::BindGroupLayoutEntry {
+                        binding: 3,
+                        visibility: wgpu::ShaderStages::FRAGMENT,
+                        ty: wgpu::BindingType::Texture {
+                            sample_type: wgpu::TextureSampleType::Float { filterable: false },
+                            view_dimension: wgpu::TextureViewDimension::D2,
+                            multisampled: false,
+                        },
+                        count: None,
+                    },
+                    // specular texture sampler
+                    wgpu::BindGroupLayoutEntry {
+                        binding: 4,
+                        visibility: wgpu::ShaderStages::FRAGMENT,
+                        ty: wgpu::BindingType::Sampler(wgpu::SamplerBindingType::NonFiltering),
+                        count: None,
+                    }, */
+                ],
+            }),
+        )
+    }
+
+    fn texture_desc(label: &str, size: UVec2) -> wgpu::TextureDescriptor {
+        //debug!("Texture desc size: {:?}", size);
+        wgpu::TextureDescriptor {
+            label: Some(label),
+            size: wgpu::Extent3d {
+                width: size.x,
+                height: size.y,
+                depth_or_array_layers: 1,
+            },
+            mip_level_count: 1, // TODO
+            sample_count: 1,
+            dimension: wgpu::TextureDimension::D2,
+            format: wgpu::TextureFormat::Rgba8UnormSrgb,
+            usage: wgpu::TextureUsages::TEXTURE_BINDING | wgpu::TextureUsages::COPY_DST,
+            view_formats: &[],
+        }
+    }
+
+    fn write_texture(queue: &wgpu::Queue, texture: &wgpu::Texture, img: &lyra_resource::Image) {
+        let dim = img.dimensions();
+        //debug!("Write texture size: {:?}", dim);
+        queue.write_texture(
+            wgpu::ImageCopyTexture {
+                aspect: wgpu::TextureAspect::All,
+                texture: &texture,
+                mip_level: 0,
+                origin: wgpu::Origin3d::ZERO,
+            },
+            &img.to_rgba8(),
+            wgpu::ImageDataLayout {
+                offset: 0,
+                bytes_per_row: std::num::NonZeroU32::new(4 * dim.0),
+                rows_per_image: std::num::NonZeroU32::new(dim.1),
+            },
+            wgpu::Extent3d {
+                width: dim.0,
+                height: dim.1,
+                depth_or_array_layers: 1,
+            },
+        );
+    }
+
+    fn from_resource(
+        device: &wgpu::Device,
+        queue: &wgpu::Queue,
+        layout: &Arc<wgpu::BindGroupLayout>,
+        mat: &lyra_resource::gltf::Material,
+    ) -> Self {
+        //let specular = mat.specular.as_ref().unwrap_or_default();
+        //let specular_
+
+        let prop = MaterialPropertiesUniform {
+            ambient: Vec3::ONE,
+            _padding1: 0,
+            diffuse: Vec3::ONE,
+            shininess: 32.0,
+            specular_factor: 0.0,
+            _padding2: [0; 3],
+            specular_color_factor: Vec3::ZERO,
+            _padding3: 0,
+        };
+
+        let properties_buffer = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
+            label: Some("buffer_material"),
+            usage: wgpu::BufferUsages::UNIFORM | wgpu::BufferUsages::COPY_DST,
+            contents: bytemuck::bytes_of(&prop),
+        });
+
+        let diffuse_tex = mat.base_color_texture.as_ref().unwrap();
+        let diffuse_tex = diffuse_tex.data_ref().unwrap();
+        let diffuse_tex_img = diffuse_tex.image.data_ref().unwrap();
+        let diffuse_tex_dim = diffuse_tex_img.dimensions();
+        let diffuse_texture = device.create_texture(&Self::texture_desc(
+            "material_diffuse_texture",
+            UVec2::new(diffuse_tex_dim.0, diffuse_tex_dim.1),
+        ));
+        let diffuse_tex_view = diffuse_texture.create_view(&wgpu::TextureViewDescriptor::default());
+
+        let sampler_desc = match &diffuse_tex.sampler {
+            Some(sampler) => {
+                let magf = res_filter_to_wgpu(
+                    sampler
+                        .mag_filter
+                        .unwrap_or(lyra_resource::FilterMode::Linear),
+                );
+                let minf = res_filter_to_wgpu(
+                    sampler
+                        .min_filter
+                        .unwrap_or(lyra_resource::FilterMode::Nearest),
+                );
+                let mipf = res_filter_to_wgpu(
+                    sampler
+                        .mipmap_filter
+                        .unwrap_or(lyra_resource::FilterMode::Nearest),
+                );
+
+                let wrap_u = res_wrap_to_wgpu(sampler.wrap_u);
+                let wrap_v = res_wrap_to_wgpu(sampler.wrap_v);
+                let wrap_w = res_wrap_to_wgpu(sampler.wrap_w);
+
+                wgpu::SamplerDescriptor {
+                    address_mode_u: wrap_u,
+                    address_mode_v: wrap_v,
+                    address_mode_w: wrap_w,
+                    mag_filter: magf,
+                    min_filter: minf,
+                    mipmap_filter: mipf,
+                    ..Default::default()
+                }
+            }
+            None => wgpu::SamplerDescriptor {
+                address_mode_u: wgpu::AddressMode::ClampToEdge,
+                address_mode_v: wgpu::AddressMode::ClampToEdge,
+                address_mode_w: wgpu::AddressMode::ClampToEdge,
+                mag_filter: wgpu::FilterMode::Linear,
+                min_filter: wgpu::FilterMode::Nearest,
+                mipmap_filter: wgpu::FilterMode::Nearest,
+                ..Default::default()
+            },
+        };
+        let diffuse_sampler = device.create_sampler(&sampler_desc);
+
+        Self::write_texture(queue, &diffuse_texture, &diffuse_tex_img);
+
+        debug!("TODO: specular texture");
+
+        let bg = device.create_bind_group(&wgpu::BindGroupDescriptor {
+            label: Some("bg_material"),
+            layout: &layout,
+            entries: &[
+                // material properties
+                wgpu::BindGroupEntry {
+                    binding: 0,
+                    resource: wgpu::BindingResource::Buffer(wgpu::BufferBinding {
+                        buffer: &properties_buffer,
+                        offset: 0,
+                        size: None,
+                    }),
+                },
+                // diffuse texture
+                wgpu::BindGroupEntry {
+                    binding: 1,
+                    resource: wgpu::BindingResource::TextureView(&diffuse_tex_view),
+                },
+                wgpu::BindGroupEntry {
+                    binding: 2,
+                    resource: wgpu::BindingResource::Sampler(&diffuse_sampler),
+                },
+                // TODO: specular textures
+            ],
+        });
+
+        Self {
+            bind_group: Arc::new(bg),
+            bind_group_layout: layout.clone(),
+            material_properties_buffer: properties_buffer,
+            diffuse_texture,
+            diffuse_texture_sampler: diffuse_sampler,
+        }
+    }
+}
+
+/// Uniform for MaterialProperties in a shader
+#[repr(C)]
+#[derive(Copy, Clone, bytemuck::Pod, bytemuck::Zeroable)]
+pub struct MaterialPropertiesUniform {
+    ambient: glam::Vec3,
+    _padding1: u32,
+    diffuse: glam::Vec3,
+    shininess: f32,
+    specular_factor: f32,
+    _padding2: [u32; 3],
+    specular_color_factor: glam::Vec3,
+    _padding3: u32,
+}
+
+#[derive(Default)]
+pub struct RenderMeshes(VecDeque<RenderJob>);
+
+impl Deref for RenderMeshes {
+    type Target = VecDeque<RenderJob>;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl DerefMut for RenderMeshes {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.0
+    }
+}

lyra-game/src/render/graph/passes/meshes.rs

@@ -1,476 +1,153 @@
-use std::{collections::{HashSet, VecDeque}, rc::Rc};
+use std::{rc::Rc, sync::Arc};
 
-use glam::Vec3;
+use lyra_ecs::{AtomicRef, ResourceData};
-use itertools::izip;
-use lyra_ecs::{query::{filter::{Has, Not, Or}, Entities, Res, TickOf}, relation::{ChildOf, RelationOriginComponent}, Component, Entity};
 use lyra_game_derive::RenderGraphLabel;
-use lyra_math::Transform;
+use tracing::{instrument, warn};
-use lyra_resource::{gltf::Mesh, ResHandle};
-use lyra_scene::{SceneGraph, WorldTransform};
-use rustc_hash::FxHashMap;
-use tracing::{debug, instrument, warn};
-use uuid::Uuid;
-use wgpu::util::DeviceExt;
 
-use crate::{
+use crate::render::{
-    render::{
+    desc_buf_lay::DescVertexBufferLayout,
-        desc_buf_lay::DescVertexBufferLayout, graph::{
+    graph::{Node, NodeDesc, NodeType, RenderGraph, RenderGraphContext},
-            Node, NodeDesc, NodeType, RenderGraph, RenderGraphContext
+    resource::{FragmentState, RenderPipeline, RenderPipelineDescriptor, Shader, VertexState},
-        }, material::{Material, MaterialUniform}, render_buffer::{BufferStorage, BufferWrapper}, render_job::RenderJob, resource::{FragmentState, RenderPipeline, RenderPipelineDescriptor, Shader, VertexState}, texture::RenderTexture, transform_buffer_storage::{TransformBuffers, TransformGroup}, vertex::Vertex
+    texture::RenderTexture,
-    },
+    transform_buffer_storage::TransformBuffers,
-    DeltaTime,
+    vertex::Vertex,
 };
 
-use super::{BasePassSlots, LightBasePassSlots, LightCullComputePassSlots};
+use super::{
-
+    BasePassSlots, LightBasePassSlots, LightCullComputePassSlots, MeshBufferStorage, RenderAssets,
-type MeshHandle = ResHandle<Mesh>;
+    RenderMeshes,
-type SceneHandle = ResHandle<SceneGraph>;
+};
 
 #[derive(Debug, Hash, Clone, Default, PartialEq, RenderGraphLabel)]
 pub struct MeshesPassLabel;
 
 #[derive(Debug, Hash, Clone, PartialEq, RenderGraphLabel)]
 pub enum MeshesPassSlots {
-    Material
+    Material,
 }
 
-struct MeshBufferStorage {
+//#[derive(Default)]
-    buffer_vertex: BufferStorage,
+#[allow(dead_code)]
-    buffer_indices: Option<(wgpu::IndexFormat, BufferStorage)>,
-
-    // maybe this should just be a Uuid and the material can be retrieved though
-    // MeshPass's `material_buffers` field?
-    material: Option<Rc<Material>>,
-}
-
-#[derive(Clone, Debug, Component)]
-struct InterpTransform {
-    last_transform: Transform,
-    alpha: f32,
-}
-
-#[derive(Default)]
 pub struct MeshPass {
-    transforms: Option<TransformBuffers>,
-    mesh_buffers: FxHashMap<uuid::Uuid, MeshBufferStorage>,
-    render_jobs: VecDeque<RenderJob>,
-
-    texture_bind_group_layout: Option<Rc<wgpu::BindGroupLayout>>,
-    material_buffer: Option<wgpu::Buffer>,
-    material_buffers: FxHashMap<uuid::Uuid, Rc<Material>>,
-    entity_meshes: FxHashMap<Entity, uuid::Uuid>,
-
     default_texture: Option<RenderTexture>,
 
     pipeline: Option<RenderPipeline>,
-    material_bgl: Option<Rc<wgpu::BindGroupLayout>>,
+    material_bgl: Arc<wgpu::BindGroupLayout>,
+    transform_buffers: Option<ResourceData>,
+    // TODO: find a better way to extract these resources from the main world to be used in the
+    // render stage.
+    render_meshes: Option<ResourceData>,
+    mesh_buffers: Option<ResourceData>,
 }
 
 impl MeshPass {
-    pub fn new() -> Self {
+    pub fn new(material_bgl: Arc<wgpu::BindGroupLayout>) -> Self {
-        Self::default()
+        Self {
-    }
+            default_texture: None,
-
+            pipeline: None,
-    /// Checks if the mesh buffers in the GPU need to be updated.
+            material_bgl,
-    #[instrument(skip(self, device, queue, mesh_han))]
+            transform_buffers: None,
-    fn check_mesh_buffers(&mut self, device: &wgpu::Device, queue: &wgpu::Queue, mesh_han: &ResHandle<Mesh>) {
+            render_meshes: None,
-        let mesh_uuid = mesh_han.uuid();
+            mesh_buffers: None,
-
-        if let (Some(mesh), Some(buffers)) = (mesh_han.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());
-                let (vert, idx) = self.create_vertex_index_buffers(device, &mesh);
-
-                // have to re-get buffers because of borrow checker
-                let buffers = self.mesh_buffers.get_mut(&mesh_uuid).unwrap();
-                buffers.buffer_indices = idx;
-                buffers.buffer_vertex = vert;
-
-                return;
-            }
-
-            // update vertices
-            let vertex_buffer = buffers.buffer_vertex.buffer();
-            let vertices = vertices.as_slice();
-            // align the vertices to 4 bytes (u32 is 4 bytes, which is wgpu::COPY_BUFFER_ALIGNMENT)
-            let (_, vertices, _) = bytemuck::pod_align_to::<Vec3, u32>(vertices);
-            queue.write_buffer(vertex_buffer, 0, bytemuck::cast_slice(vertices));
-
-            // update the indices if they're given
-            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::gltf::MeshIndices::U16(v) => bytemuck::pod_align_to::<u16, u32>(v).1,
-                    lyra_resource::gltf::MeshIndices::U32(v) => bytemuck::pod_align_to::<u32, u32>(v).1,
-                };
-                
-                let index_buffer = index_buffer.1.buffer();
-                queue.write_buffer(index_buffer, 0, bytemuck::cast_slice(aligned_indices));
-            }
-        }
-    }
-
-    #[instrument(skip(self, device, mesh))]
-    fn create_vertex_index_buffers(&mut self, device: &wgpu::Device, mesh: &Mesh) -> (BufferStorage, Option<(wgpu::IndexFormat, BufferStorage)>) {
-        let positions = mesh.position().unwrap();
-        let tex_coords: Vec<glam::Vec2> = mesh.tex_coords().cloned()
-            .unwrap_or_else(|| vec![glam::Vec2::new(0.0, 0.0); positions.len()]);
-        let normals = mesh.normals().unwrap();
-
-        assert!(positions.len() == tex_coords.len() && positions.len() == normals.len());
-
-        let mut vertex_inputs = vec![];
-        for (v, t, n) in izip!(positions.iter(), tex_coords.iter(), normals.iter()) {
-            vertex_inputs.push(Vertex::new(*v, *t, *n));
-        }
-
-        let vertex_buffer = device.create_buffer_init(
-            &wgpu::util::BufferInitDescriptor {
-                label: Some("Vertex Buffer"),
-                contents: bytemuck::cast_slice(vertex_inputs.as_slice()),//vertex_combined.as_slice(),
-                usage: wgpu::BufferUsages::VERTEX | wgpu::BufferUsages:: COPY_DST, 
-            }
-        );
-        let vertex_buffer = BufferStorage::new(vertex_buffer, 0, vertex_inputs.len());
-
-        let indices = match mesh.indices.as_ref() {
-            Some(indices) => {
-                let (idx_type, len, contents) = match indices {
-                    lyra_resource::gltf::MeshIndices::U16(v) => (wgpu::IndexFormat::Uint16, v.len(), bytemuck::cast_slice(v)),
-                    lyra_resource::gltf::MeshIndices::U32(v) => (wgpu::IndexFormat::Uint32, v.len(), bytemuck::cast_slice(v)),
-                };
-
-                let index_buffer = device.create_buffer_init(
-                    &wgpu::util::BufferInitDescriptor {
-                        label: Some("Index Buffer"),
-                        contents,
-                        usage: wgpu::BufferUsages::INDEX | wgpu::BufferUsages:: COPY_DST,
-                    }
-                );
-
-                let buffer_indices = BufferStorage::new(index_buffer, 0, len);
-
-                Some((idx_type, buffer_indices))
-            },
-            None => {
-                None
-            }
-        };
-
-        ( vertex_buffer, indices )
-    }
-
-    #[instrument(skip(self, device, queue, mesh))]
-    fn create_mesh_buffers(&mut self, device: &wgpu::Device, queue: &wgpu::Queue, mesh: &Mesh) -> MeshBufferStorage {
-        let (vertex_buffer, buffer_indices) = self.create_vertex_index_buffers(device, mesh);
-
-        let material = mesh.material.as_ref()
-            .expect("Material resource not loaded yet");
-        let material_ref = material.data_ref()
-            .unwrap();
-        
-        let material = self.material_buffers.entry(material.uuid())
-            .or_insert_with(|| {
-                debug!(uuid=material.uuid().to_string(), "Sending material to gpu");
-                Rc::new(Material::from_resource(device, queue, self.texture_bind_group_layout.clone().unwrap(), &material_ref))
-            });
-
-        // TODO: support material uniforms from multiple uniforms
-        let uni = MaterialUniform::from(&**material);
-        queue.write_buffer(self.material_buffer.as_ref().unwrap(), 0, bytemuck::bytes_of(&uni));
-
-        MeshBufferStorage {
-            buffer_vertex: vertex_buffer,
-            buffer_indices,
-            material: Some(material.clone()),
         }
     }
 
-    /// Processes the mesh for the renderer, storing and creating buffers as needed. Returns true if a new mesh was processed.
+    fn transform_buffers(&self) -> AtomicRef<TransformBuffers> {
-    #[instrument(skip(self, device, queue, mesh, entity))]
+        self.transform_buffers
-    fn process_mesh(&mut self, device: &wgpu::Device, queue: &wgpu::Queue, entity: Entity, mesh: &Mesh, mesh_uuid: Uuid) -> bool {
+            .as_ref()
-        #[allow(clippy::map_entry)]
+            .unwrap()
-        if !self.mesh_buffers.contains_key(&mesh_uuid) {
+            .get()
-            // create the mesh's buffers
+    }
-            let buffers = self.create_mesh_buffers(device, queue, mesh);
-            self.mesh_buffers.insert(mesh_uuid, buffers);
-            self.entity_meshes.insert(entity, mesh_uuid);
 
-            true
+    fn render_meshes(&self) -> AtomicRef<RenderMeshes> {
-        } else { false }
+        self.render_meshes
+            .as_ref()
+            .unwrap()
+            .get()
+    }
+
+    fn mesh_buffers(&self) -> AtomicRef<RenderAssets<MeshBufferStorage>> {
+        self.mesh_buffers
+            .as_ref()
+            .unwrap()
+            .get()
     }
 }
 
 impl Node for MeshPass {
     fn desc(
         &mut self,
-        graph: &mut crate::render::graph::RenderGraph,
+        _: &mut crate::render::graph::RenderGraph,
     ) -> crate::render::graph::NodeDesc {
-        
-        let device = graph.device();
-        
-        let transforms = TransformBuffers::new(device);
-        //let transform_bgl = transforms.bindgroup_layout.clone();
-        self.transforms = Some(transforms);
-
-        let texture_bind_group_layout = Rc::new(RenderTexture::create_layout(device));
-        self.texture_bind_group_layout = Some(texture_bind_group_layout.clone());
-
-        let (material_bgl, material_bg, material_buf, _) = BufferWrapper::builder()
-            .label_prefix("material")
-            .visibility(wgpu::ShaderStages::FRAGMENT)
-            .buffer_usage(wgpu::BufferUsages::UNIFORM | wgpu::BufferUsages::COPY_DST)
-            .contents(&[MaterialUniform::default()])
-            .finish_parts(device);
-        let material_bgl = Rc::new(material_bgl);
-        self.material_bgl = Some(material_bgl.clone());
-        let material_bg = Rc::new(material_bg);
-
-        self.material_buffer = Some(material_buf);
-
         // load the default texture
-        let bytes = include_bytes!("../../default_texture.png");
+        //let bytes = include_bytes!("../../default_texture.png");
-        self.default_texture = Some(RenderTexture::from_bytes(device, &graph.queue, texture_bind_group_layout.clone(), bytes, "default_texture").unwrap());
+        //self.default_texture = Some(RenderTexture::from_bytes(device, &graph.queue, texture_bind_group_layout.clone(), bytes, "default_texture").unwrap());
-
-        // get surface config format
-        /* let main_rt = graph.slot_value(BasePassSlots::MainRenderTarget)
-            .and_then(|s| s.as_render_target())
-            .expect("missing main render target");
-        let surface_config_format = main_rt.format();
-        drop(main_rt); */
-
-        /* let camera_bgl = graph.bind_group_layout(BasePassSlots::Camera);
-        let lights_bgl = graph.bind_group_layout(LightBasePassSlots::Lights);
-        let light_grid_bgl = graph
-            .bind_group_layout(LightCullComputePassSlots::LightIndicesGridGroup);
-
-        let shader = Rc::new(Shader {
-            label: Some("base_shader".into()),
-            source: include_str!("../../shaders/base.wgsl").to_string(),
-        }); */
-
-        
 
         NodeDesc::new(
             NodeType::Render,
             None,
-            /* Some(PipelineDescriptor::Render(RenderPipelineDescriptor {
-                label: Some("meshes".into()),
-                layouts: vec![
-                    texture_bind_group_layout.clone(),
-                    transform_bgl,
-                    camera_bgl.clone(),
-                    lights_bgl.clone(),
-                    material_bgl.clone(),
-                    texture_bind_group_layout,
-                    light_grid_bgl.clone(),
-                ],
-                push_constant_ranges: vec![],
-                vertex: VertexState {
-                    module: shader.clone(),
-                    entry_point: "vs_main".into(),
-                    buffers: vec![
-                        Vertex::desc().into(),
-                    ],
-                },
-                fragment: Some(FragmentState {
-                    module: shader,
-                    entry_point: "fs_main".into(),
-                    targets: vec![Some(wgpu::ColorTargetState {
-                        format: surface_config_format,
-                        blend: Some(wgpu::BlendState::REPLACE),
-                        write_mask: wgpu::ColorWrites::ALL,
-                    })],
-                }),
-                depth_stencil: Some(wgpu::DepthStencilState {
-                    format: RenderTexture::DEPTH_FORMAT,
-                    depth_write_enabled: true,
-                    depth_compare: wgpu::CompareFunction::Less,
-                    stencil: wgpu::StencilState::default(), // TODO: stencil buffer
-                    bias: wgpu::DepthBiasState::default(),
-                }),
-                primitive: wgpu::PrimitiveState::default(),
-                multisample: wgpu::MultisampleState::default(),
-                multiview: None,
-            })), */
             vec![
-                (&MeshesPassSlots::Material, material_bg, Some(material_bgl)),
+                //(&MeshesPassSlots::Material, material_bg, Some(material_bgl)),
             ],
         )
     }
 
-    #[instrument(skip(self, graph, world, context))]
+    #[instrument(skip(self, graph, world))]
-    fn prepare(&mut self, graph: &mut RenderGraph, world: &mut lyra_ecs::World, context: &mut RenderGraphContext) {
+    fn prepare(
-        let device = &context.device;
+        &mut self,
-        let queue = &context.queue;
+        graph: &mut RenderGraph,
-        let render_limits = device.limits();
+        world: &mut lyra_ecs::World,
-
+        _: &mut RenderGraphContext,
-        let last_epoch = world.current_tick();
+    ) {
-        let mut alive_entities = HashSet::new();
-        
-        let view = world.view_iter::<(
-            Entities,
-            &Transform,
-            TickOf<Transform>,
-            Or<
-                (&MeshHandle, TickOf<MeshHandle>),
-                (&SceneHandle, TickOf<SceneHandle>)
-            >,
-            Option<&mut InterpTransform>,
-            Res<DeltaTime>,
-        )>();
-
-        // used to store InterpTransform components to add to entities later
-        let mut component_queue: Vec<(Entity, InterpTransform)> = vec![];
-
-        for (
-                entity,
-                transform,
-                _transform_epoch,
-                (
-                    mesh_pair,
-                    scene_pair
-                ),
-                interp_tran,
-                delta_time,
-            ) in view
-        {
-            alive_entities.insert(entity);
-
-            // Interpolate the transform for this entity using a component.
-            // If the entity does not have the component then it will be queued to be added
-            // to it after all the entities are prepared for rendering.
-            let interp_transform = match interp_tran {
-                Some(mut interp_transform) => {
-                    // found in https://youtu.be/YJB1QnEmlTs?t=472
-                    interp_transform.alpha = 1.0 - interp_transform.alpha.powf(**delta_time);
-    
-                    interp_transform.last_transform = interp_transform.last_transform.lerp(*transform, interp_transform.alpha);
-                    interp_transform.last_transform
-                },
-                None => {
-                    let interp = InterpTransform {
-                        last_transform: *transform,
-                        alpha: 0.5,
-                    };
-                    component_queue.push((entity, interp));
-
-                    *transform
-                }
-            };
-
-            {
-                // expand the transform buffers if they need to be.
-                // this is done in its own scope to avoid multiple mutable references to self at
-                // once; aka, make the borrow checker happy
-                let transforms = self.transforms.as_mut().unwrap();
-                if transforms.needs_expand() {
-                    debug!("Expanding transform buffers");
-                    transforms.expand_buffers(device);
-                }
-            }
-
-            if let Some((mesh_han, mesh_epoch)) = mesh_pair {
-                if let Some(mesh) = mesh_han.data_ref() {
-                    // 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(device, queue, entity, &mesh, mesh_han.uuid())
-                            && mesh_epoch == last_epoch {
-                        self.check_mesh_buffers(device, queue, &mesh_han);
-                    }
-                    
-                    let transforms = self.transforms.as_mut().unwrap();
-                    let group = TransformGroup::EntityRes(entity, mesh_han.uuid());
-                    let transform_id = transforms.update_or_push(device, queue, &render_limits,
-                        group, interp_transform.calculate_mat4(), glam::Mat3::from_quat(interp_transform.rotation));
-
-                    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(), transform_id);
-                    self.render_jobs.push_back(job);
-                }
-            }
-
-            if let Some((scene_han, scene_epoch)) = scene_pair {
-                if let Some(scene) = scene_han.data_ref() {
-                    if scene_epoch == last_epoch {
-                        let view = scene.world().view::<(Entities, &mut WorldTransform, &Transform, Not<Has<RelationOriginComponent<ChildOf>>>)>();
-                        lyra_scene::system_update_world_transforms(scene.world(), view).unwrap();
-                    }
-
-                    for (mesh_han, pos) in scene.world().view_iter::<(&MeshHandle, &WorldTransform)>() {
-                        if let Some(mesh) = mesh_han.data_ref() {
-                            let mesh_interpo = interp_transform + **pos;
-
-                            // 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(device, queue, entity, &mesh, mesh_han.uuid())
-                                    && scene_epoch == last_epoch {
-                                self.check_mesh_buffers(device, queue, &mesh_han);
-                            }
-
-                            let transforms = self.transforms.as_mut().unwrap();
-                            let scene_mesh_group = TransformGroup::Res(scene_han.uuid(), mesh_han.uuid());
-                            let group = TransformGroup::OwnedGroup(entity, scene_mesh_group.into());
-                            let transform_id = transforms.update_or_push(device, queue, &render_limits,
-                                group, mesh_interpo.calculate_mat4(), glam::Mat3::from_quat(mesh_interpo.rotation) );
-                            
-                            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(), transform_id);
-                            self.render_jobs.push_back(job);
-                        }
-                    }
-                }
-            }
-        }
-
-        for (en, interp) in component_queue {
-            world.insert(en, interp);
-        }
-
-        let transforms = self.transforms.as_mut().unwrap();
-        transforms.send_to_gpu(queue);
-
         if self.pipeline.is_none() {
             let device = graph.device();
             let surface_config_format = graph.view_target().format();
 
             let camera_bgl = graph.bind_group_layout(BasePassSlots::Camera);
             let lights_bgl = graph.bind_group_layout(LightBasePassSlots::Lights);
-            let light_grid_bgl = graph
+            let light_grid_bgl =
-                .bind_group_layout(LightCullComputePassSlots::LightIndicesGridGroup);
+                graph.bind_group_layout(LightCullComputePassSlots::LightIndicesGridGroup);
 
             let shader = Rc::new(Shader {
                 label: Some("base_shader".into()),
                 source: include_str!("../../shaders/base.wgsl").to_string(),
             });
 
-            self.pipeline = Some(RenderPipeline::create(device, &RenderPipelineDescriptor {
+            
+            let transforms = world
+                .try_get_resource_data::<TransformBuffers>()
+                .expect("Missing transform buffers");
+            self.transform_buffers = Some(transforms.clone());
+            
+            let render_meshes = world
+                .try_get_resource_data::<RenderMeshes>()
+                .expect("Missing transform buffers");
+            self.render_meshes = Some(render_meshes.clone());
+
+            let mesh_buffers = world
+                .try_get_resource_data::<RenderAssets<MeshBufferStorage>>()
+                .expect("Missing render meshes");
+            self.mesh_buffers = Some(mesh_buffers.clone());
+            
+
+            let transforms = transforms.get::<TransformBuffers>();
+
+            self.pipeline = Some(RenderPipeline::create(
+                device,
+                &RenderPipelineDescriptor {
                     label: Some("meshes".into()),
                     layouts: vec![
-                    self.texture_bind_group_layout.as_ref().unwrap().clone(),
+                        self.material_bgl.clone(),
-                    //transform_bgl
+                        transforms.bindgroup_layout.clone(),
-                    self.transforms.as_ref().unwrap().bindgroup_layout.clone(),
                         camera_bgl.clone(),
                         lights_bgl.clone(),
-                    self.material_bgl.as_ref().unwrap().clone(),
-                    self.texture_bind_group_layout.as_ref().unwrap().clone(),
                         light_grid_bgl.clone(),
                     ],
                     push_constant_ranges: vec![],
                     vertex: VertexState {
                         module: shader.clone(),
                         entry_point: "vs_main".into(),
-                    buffers: vec![
+                        buffers: vec![Vertex::desc().into()],
-                        Vertex::desc().into(),
-                    ],
                     },
                     fragment: Some(FragmentState {
                         module: shader,
@@ -491,7 +168,8 @@ impl Node for MeshPass {
                     primitive: wgpu::PrimitiveState::default(),
                     multisample: wgpu::MultisampleState::default(),
                     multiview: None,
-            }));
+                },
+            ));
         }
     }
 
@@ -518,22 +196,23 @@ impl Node for MeshPass {
             .as_texture_view()
             .expect("BasePassSlots::DepthTextureView was not a TextureView slot");
 
-        let camera_bg = graph
+        let camera_bg = graph.bind_group(BasePassSlots::Camera);
-            .bind_group(BasePassSlots::Camera);
 
-        let lights_bg = graph
+        let lights_bg = graph.bind_group(LightBasePassSlots::Lights);
-            .bind_group(LightBasePassSlots::Lights);
 
-        let light_grid_bg = graph
+        let light_grid_bg = graph.bind_group(LightCullComputePassSlots::LightIndicesGridGroup);
-            .bind_group(LightCullComputePassSlots::LightIndicesGridGroup);
 
-        let material_bg = graph
+        //let material_bg = graph.bind_group(MeshesPassSlots::Material);
-            .bind_group(MeshesPassSlots::Material);
 
         /* let pipeline = graph.pipeline(context.label.clone())
         .expect("Failed to find pipeline for MeshPass"); */
         let pipeline = self.pipeline.as_ref().unwrap();
 
+        let transforms = self.transform_buffers();
+        let render_meshes = self.render_meshes();
+        let mesh_buffers = self.mesh_buffers();
+
+        {
             let mut pass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
                 label: Some("Render Pass"),
                 color_attachments: &[Some(wgpu::RenderPassColorAttachment {
@@ -562,13 +241,11 @@ impl Node for MeshPass {
 
             pass.set_pipeline(pipeline);
 
-        //let material_buffer_bg = self.material_buffer.as_ref().unwrap().bindgroup();
+            //let default_texture = self.default_texture.as_ref().unwrap();
-        let default_texture = self.default_texture.as_ref().unwrap();
-        let transforms = self.transforms.as_mut().unwrap();
 
-        while let Some(job) = self.render_jobs.pop_front() {
+            for job in render_meshes.iter() {
                 // get the mesh (containing vertices) and the buffers from storage
-            let buffers = self.mesh_buffers.get(&job.mesh_uuid);
+                let buffers = mesh_buffers.get(&job.mesh_uuid);
                 if buffers.is_none() {
                     warn!("Skipping job since its mesh is missing {:?}", job.mesh_uuid);
                     continue;
@@ -576,7 +253,7 @@ impl Node for MeshPass {
                 let buffers = buffers.unwrap();
 
                 // Bind the optional texture
-            if let Some(tex) = buffers.material.as_ref()
+                /* if let Some(tex) = buffers.material.as_ref()
                         .and_then(|m| m.diffuse_texture.as_ref()) {
                     pass.set_bind_group(0, tex.bind_group(), &[]);
                 } else {
@@ -589,32 +266,44 @@ impl Node for MeshPass {
                     pass.set_bind_group(5, tex.bind_group(), &[]);
                 } else {
                     pass.set_bind_group(5, default_texture.bind_group(), &[]);
+                } */
+                if let Some(mat) = buffers.material.as_ref() {
+                    pass.set_bind_group(0, &mat.bind_group, &[]);
+                } else {
+                    todo!("cannot render mesh without material");
                 }
 
                 // Get the bindgroup for job's transform and bind to it using an offset.
                 let bindgroup = transforms.bind_group(job.transform_id);
                 let offset = transforms.buffer_offset(job.transform_id);
-            pass.set_bind_group(1, bindgroup, &[ offset, ]);
+                pass.set_bind_group(1, bindgroup, &[offset]);
 
                 pass.set_bind_group(2, camera_bg, &[]);
                 pass.set_bind_group(3, lights_bg, &[]);
-            pass.set_bind_group(4, material_bg, &[]);
+                //pass.set_bind_group(4, material_bg, &[]);
 
-            pass.set_bind_group(6, light_grid_bg, &[]);
+                pass.set_bind_group(4, light_grid_bg, &[]);
 
                 // if this mesh uses indices, use them to draw the mesh
                 if let Some((idx_type, indices)) = buffers.buffer_indices.as_ref() {
                     let indices_len = indices.count() as u32;
 
-                pass.set_vertex_buffer(buffers.buffer_vertex.slot(), buffers.buffer_vertex.buffer().slice(..));
+                    pass.set_vertex_buffer(
+                        buffers.buffer_vertex.slot(),
+                        buffers.buffer_vertex.buffer().slice(..),
+                    );
                     pass.set_index_buffer(indices.buffer().slice(..), *idx_type);
                     pass.draw_indexed(0..indices_len, 0, 0..1);
                 } else {
                     let vertex_count = buffers.buffer_vertex.count();
 
-                pass.set_vertex_buffer(buffers.buffer_vertex.slot(), buffers.buffer_vertex.buffer().slice(..));
+                    pass.set_vertex_buffer(
+                        buffers.buffer_vertex.slot(),
+                        buffers.buffer_vertex.buffer().slice(..),
+                    );
                     pass.draw(0..vertex_count as u32, 0..1);
                 }
             }
         }
     }
+}

lyra-game/src/render/graph/passes/mod.rs

@@ -21,3 +21,9 @@ pub use tint::*;
 
 mod fxaa;
 pub use fxaa::*;
+
+/* mod shadow_maps;
+pub use shadow_maps::*; */
+
+mod mesh_prepare;
+pub use mesh_prepare::*;

lyra-game/src/render/graph/passes/tint.rs

@@ -1,4 +1,4 @@
-use std::{collections::HashMap, rc::Rc};
+use std::{collections::HashMap, rc::Rc, sync::Arc};
 
 use lyra_game_derive::RenderGraphLabel;
 
@@ -13,7 +13,7 @@ pub struct TintPassLabel;
 #[derive(Debug, Default)]
 pub struct TintPass {
     target_sampler: Option<wgpu::Sampler>,
-    bgl: Option<Rc<wgpu::BindGroupLayout>>,
+    bgl: Option<Arc<wgpu::BindGroupLayout>>,
     /// Store bind groups for the input textures.
     /// The texture may change due to resizes, or changes to the view target chain
     /// from other nodes.
@@ -54,7 +54,7 @@ impl Node for TintPass {
                 },
             ],
         });
-        let bgl = Rc::new(bgl);
+        let bgl = Arc::new(bgl);
         self.bgl = Some(bgl.clone());
         self.target_sampler = Some(device.create_sampler(&wgpu::SamplerDescriptor::default()));
 

lyra-game/src/render/light/mod.rs

@@ -6,7 +6,7 @@ use lyra_ecs::{Entity, Tick, World};
 pub use point::*;
 pub use spotlight::*;
 
-use std::{collections::{HashMap, VecDeque}, marker::PhantomData, mem, rc::Rc};
+use std::{collections::{HashMap, VecDeque}, marker::PhantomData, mem, sync::Arc};
 
 use crate::math::Transform;
 
@@ -98,9 +98,9 @@ impl<U: Default + bytemuck::Pod + bytemuck::Zeroable> LightBuffer<U> {
 }
 
 pub(crate) struct LightUniformBuffers {
-    pub buffer: Rc<wgpu::Buffer>,
+    pub buffer: Arc<wgpu::Buffer>,
-    pub bind_group: Rc<wgpu::BindGroup>,
+    pub bind_group: Arc<wgpu::BindGroup>,
-    pub bind_group_layout: Rc<wgpu::BindGroupLayout>,
+    pub bind_group_layout: Arc<wgpu::BindGroupLayout>,
     max_light_count: u64,
 }
 
@@ -155,9 +155,9 @@ impl LightUniformBuffers {
         });
 
         Self {
-            buffer: Rc::new(buffer),
+            buffer: Arc::new(buffer),
-            bind_group: Rc::new(bindgroup),
+            bind_group: Arc::new(bindgroup),
-            bind_group_layout: Rc::new(bindgroup_layout),
+            bind_group_layout: Arc::new(bindgroup_layout),
             max_light_count: max_buffer_sizes / mem::size_of::<LightUniform>() as u64,
         }
     }

lyra-game/src/render/material.rs

@@ -1,9 +1,10 @@
-use std::rc::Rc;
+use std::sync::Arc;
 
 use lyra_resource::{ResHandle, Texture};
 
 use super::texture::RenderTexture;
 
+#[derive(Default)]
 pub struct MaterialSpecular {
     pub factor: f32,
     pub color_factor: glam::Vec3,
@@ -11,7 +12,7 @@ pub struct MaterialSpecular {
     pub color_texture: Option<RenderTexture>,
 }
 
-fn texture_to_render(device: &wgpu::Device, queue: &wgpu::Queue, bg_layout: &Rc<wgpu::BindGroupLayout>, i: &Option<ResHandle<Texture>>) -> Option<RenderTexture> {
+fn texture_to_render(device: &wgpu::Device, queue: &wgpu::Queue, bg_layout: &Arc<wgpu::BindGroupLayout>, i: &Option<ResHandle<Texture>>) -> Option<RenderTexture> {
     if let Some(tex) = i {
         RenderTexture::from_resource(device, queue, bg_layout.clone(), tex, None).ok()
     } else {
@@ -20,7 +21,7 @@ fn texture_to_render(device: &wgpu::Device, queue: &wgpu::Queue, bg_layout: &Rc<
 }
 
 impl MaterialSpecular {
-    pub fn from_resource(device: &wgpu::Device, queue: &wgpu::Queue, bg_layout: Rc<wgpu::BindGroupLayout>, value: &lyra_resource::gltf::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  = texture_to_render(device, queue, &bg_layout, &value.texture);
         let color_tex  = texture_to_render(device, queue, &bg_layout, &value.color_texture);
 
@@ -45,7 +46,7 @@ pub struct Material {
 }
 
 impl Material {
-    pub fn from_resource(device: &wgpu::Device, queue: &wgpu::Queue, bg_layout: Rc<wgpu::BindGroupLayout>, value: &lyra_resource::gltf::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  = texture_to_render(device, queue, &bg_layout, &value.base_color_texture);
 
         let specular = value.specular.as_ref().map(|s| MaterialSpecular::from_resource(device, queue, bg_layout.clone(), s));

lyra-game/src/render/render_buffer.rs

@@ -1,4 +1,4 @@
-use std::{num::NonZeroU32, rc::Rc};
+use std::{num::NonZeroU32, sync::Arc};
 
 use wgpu::util::DeviceExt;
 
@@ -23,11 +23,11 @@ impl RenderBuffer {
 
 pub struct BindGroupPair {
     pub bindgroup: wgpu::BindGroup,
-    pub layout: Rc<wgpu::BindGroupLayout>,
+    pub layout: Arc<wgpu::BindGroupLayout>,
 }
 
 impl BindGroupPair {
-    pub fn create_bind_group(device: &wgpu::Device, layout: Rc<wgpu::BindGroupLayout>, entries: &[wgpu::BindGroupEntry<'_>]) -> Self {
+    pub fn create_bind_group(device: &wgpu::Device, layout: Arc<wgpu::BindGroupLayout>, entries: &[wgpu::BindGroupEntry<'_>]) -> Self {
         let bindgroup = device.create_bind_group(&wgpu::BindGroupDescriptor {
             layout: &layout,
             entries,
@@ -43,7 +43,7 @@ impl BindGroupPair {
     pub fn new(bindgroup: wgpu::BindGroup, layout: wgpu::BindGroupLayout) -> Self {
         Self {
             bindgroup,
-            layout: Rc::new(layout),
+            layout: Arc::new(layout),
         }
     }
 }
@@ -136,7 +136,7 @@ impl BufferWrapper {
     }
 
     /// Take the bind group layout, the bind group, and the buffer out of the wrapper.
-    pub fn parts(self) -> (Option<Rc<wgpu::BindGroupLayout>>, Option<wgpu::BindGroup>, wgpu::Buffer) {
+    pub fn parts(self) -> (Option<Arc<wgpu::BindGroupLayout>>, Option<wgpu::BindGroup>, wgpu::Buffer) {
         if let Some(pair) = self.bindgroup_pair {
             (Some(pair.layout), Some(pair.bindgroup), self.inner_buf)
         } else {
@@ -297,7 +297,7 @@ impl BufferWrapperBuilder {
 
                 BindGroupPair {
                     bindgroup: bg,
-                    layout: Rc::new(bg_layout),
+                    layout: Arc::new(bg_layout),
                 }
             }
         };
@@ -308,7 +308,7 @@ impl BufferWrapperBuilder {
             len: Some(self.count.unwrap_or_default() as usize),
         } */
 
-        (Rc::try_unwrap(bg_pair.layout).unwrap(), bg_pair.bindgroup, buffer, self.count.unwrap_or_default() as usize)
+        (Arc::try_unwrap(bg_pair.layout).unwrap(), bg_pair.bindgroup, buffer, self.count.unwrap_or_default() as usize)
     }
 
     pub fn finish(self, device: &wgpu::Device) -> BufferWrapper {
@@ -316,7 +316,7 @@ impl BufferWrapperBuilder {
 
         BufferWrapper {
             bindgroup_pair: Some(BindGroupPair {
-                layout: Rc::new(bgl),
+                layout: Arc::new(bgl),
                 bindgroup: bg
             }),
             inner_buf: buff,

lyra-game/src/render/renderer.rs

@@ -9,7 +9,7 @@ use lyra_game_derive::RenderGraphLabel;
 use tracing::{debug, instrument, warn};
 use winit::window::Window;
 
-use crate::render::graph::{BasePass, BasePassLabel, BasePassSlots, FxaaPass, FxaaPassLabel, LightBasePass, LightBasePassLabel, LightCullComputePass, LightCullComputePassLabel, MeshPass, MeshesPassLabel, PresentPass, PresentPassLabel, RenderGraphLabelValue, RenderTarget, SubGraphNode, ViewTarget};
+use crate::render::graph::{BasePass, BasePassLabel, BasePassSlots, FxaaPass, FxaaPassLabel, LightBasePass, LightBasePassLabel, LightCullComputePass, LightCullComputePassLabel, MeshPass, MeshPrepNode, MeshPrepNodeLabel, MeshesPassLabel, PresentPass, PresentPassLabel, RenderGraphLabelValue, RenderTarget, SubGraphNode, ViewTarget};
 
 use super::graph::RenderGraph;
 use super::{resource::RenderPipeline, render_job::RenderJob};
@@ -147,9 +147,13 @@ impl BasicRenderer {
             forward_plus_graph.add_node(LightCullComputePassLabel, LightCullComputePass::new(size));
             
             debug!("Adding mesh pass");
-            forward_plus_graph.add_node(MeshesPassLabel, MeshPass::new());
+            let mesh_prep = MeshPrepNode::new(&device);
+            let material_bgl = mesh_prep.material_bgl.clone();
+            forward_plus_graph.add_node(MeshPrepNodeLabel, mesh_prep);
+            forward_plus_graph.add_node(MeshesPassLabel, MeshPass::new(material_bgl));
 
             forward_plus_graph.add_edge(LightBasePassLabel, LightCullComputePassLabel);
+            forward_plus_graph.add_edge(MeshPrepNodeLabel, MeshesPassLabel);
             
             main_graph.add_sub_graph(TestSubGraphLabel, forward_plus_graph);
             main_graph.add_node(TestSubGraphLabel, SubGraphNode::new(TestSubGraphLabel, 

lyra-game/src/render/resource/compute_pipeline.rs

@@ -1,4 +1,4 @@
-use std::{ops::Deref, rc::Rc};
+use std::{ops::Deref, rc::Rc, sync::Arc};
 
 use wgpu::PipelineLayout;
 
@@ -7,7 +7,7 @@ use super::Shader;
 //#[derive(Debug, Clone)]
 pub struct ComputePipelineDescriptor {
     pub label: Option<String>,
-    pub layouts: Vec<Rc<wgpu::BindGroupLayout>>,
+    pub layouts: Vec<Arc<wgpu::BindGroupLayout>>,
     pub push_constant_ranges: Vec<wgpu::PushConstantRange>,
     // TODO: make this a ResHandle<Shader>
     /// The compiled shader module for the stage.

lyra-game/src/render/resource/render_pipeline.rs

@@ -1,4 +1,4 @@
-use std::{num::NonZeroU32, ops::Deref, rc::Rc};
+use std::{num::NonZeroU32, ops::Deref, sync::Arc};
 
 use wgpu::PipelineLayout;
 
@@ -7,7 +7,7 @@ use super::{FragmentState, VertexState};
 //#[derive(Debug, Clone)]
 pub struct RenderPipelineDescriptor {
     pub label: Option<String>,
-    pub layouts: Vec<Rc<wgpu::BindGroupLayout>>,
+    pub layouts: Vec<Arc<wgpu::BindGroupLayout>>,
     pub push_constant_ranges: Vec<wgpu::PushConstantRange>,
     pub vertex: VertexState,
     pub fragment: Option<FragmentState>,
@@ -87,7 +87,7 @@ impl RenderPipeline {
         // an Rc was used here so that this shader could be reused by the fragment stage if
         // they share the same shader. I tried to do it without an Rc but couldn't get past
         // the borrow checker
-        let vrtx_shad = Rc::new(device.create_shader_module(wgpu::ShaderModuleDescriptor {
+        let vrtx_shad = Arc::new(device.create_shader_module(wgpu::ShaderModuleDescriptor {
             label: desc.vertex.module.label.as_deref(),
             source: wgpu::ShaderSource::Wgsl(std::borrow::Cow::Borrowed(
                 &desc.vertex.module.source,
@@ -103,7 +103,7 @@ impl RenderPipeline {
             if f.module == desc.vertex.module {
                 vrtx_shad.clone()
             } else {
-                Rc::new(device.create_shader_module(wgpu::ShaderModuleDescriptor {
+                Arc::new(device.create_shader_module(wgpu::ShaderModuleDescriptor {
                     label: f.module.label.as_deref(),
                     source: wgpu::ShaderSource::Wgsl(std::borrow::Cow::Borrowed(&f.module.source)),
                 }))

lyra-game/src/render/shaders/base.wgsl

@@ -87,28 +87,31 @@ fn vs_main(
 // Fragment shader
 
 struct Material {
-    ambient: vec4<f32>,
+    ambient: vec3<f32>,
-    diffuse: vec4<f32>,
+    diffuse: vec3<f32>,
-    specular: vec4<f32>,
     shininess: f32,
+    specular_factor: f32,
+    specular_color: vec3<f32>,
 }
 
 @group(0) @binding(0)
-var t_diffuse: texture_2d<f32>;
+var<uniform> u_material: Material;
 @group(0) @binding(1)
+var t_diffuse: texture_2d<f32>;
+@group(0) @binding(2)
 var s_diffuse: sampler;
 
-@group(4) @binding(0)
+/*@group(4) @binding(0)
 var<uniform> u_material: Material;
 
 @group(5) @binding(0)
 var t_specular: texture_2d<f32>;
 @group(5) @binding(1)
-var s_specular: sampler;
+var s_specular: sampler;*/
 
-@group(6) @binding(0)
+@group(4) @binding(0)
 var<storage, read_write> u_light_indices: array<u32>;
-@group(6) @binding(1)
+@group(4) @binding(1)
 var t_light_grid: texture_storage_2d<rg32uint, read_write>; // vec2<u32>
 
 @fragment
@@ -118,7 +121,7 @@ fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
     }
 
     let object_color: vec4<f32> = textureSample(t_diffuse, s_diffuse, in.tex_coords);
-    let specular_color: vec3<f32> = textureSample(t_specular, s_specular, in.tex_coords).xyz;
+    let specular_color: vec3<f32> = vec3<f32>(0.0); //textureSample(t_specular, s_specular, in.tex_coords).xyz;
     var light_res = vec3<f32>(0.0);
 
     if (object_color.a < ALPHA_CUTOFF) {

lyra-game/src/render/texture.rs

@@ -1,4 +1,4 @@
-use std::rc::Rc;
+use std::sync::Arc;
 
 use image::GenericImageView;
 use lyra_resource::{FilterMode, ResHandle, Texture, WrappingMode};
@@ -44,7 +44,7 @@ impl RenderTexture {
         })
     }
 
-    fn create_bind_group_pair(device: &wgpu::Device, layout: Rc<wgpu::BindGroupLayout>, view: &wgpu::TextureView, sampler: &wgpu::Sampler) -> BindGroupPair {
+    fn create_bind_group_pair(device: &wgpu::Device, layout: Arc<wgpu::BindGroupLayout>, view: &wgpu::TextureView, sampler: &wgpu::Sampler) -> BindGroupPair {
         let bg = device.create_bind_group(
             &wgpu::BindGroupDescriptor {
                 layout: &layout,
@@ -68,12 +68,12 @@ impl RenderTexture {
         }
     }
 
-    pub fn from_bytes(device: &wgpu::Device, queue: &wgpu::Queue, bg_layout: Rc<wgpu::BindGroupLayout>, bytes: &[u8], label: &str) -> anyhow::Result<Self> {
+    pub fn from_bytes(device: &wgpu::Device, queue: &wgpu::Queue, bg_layout: Arc<wgpu::BindGroupLayout>, bytes: &[u8], label: &str) -> anyhow::Result<Self> {
         let img = image::load_from_memory(bytes)?;
         Self::from_image(device, queue, bg_layout, &img, Some(label))
     }
 
-    pub fn from_image(device: &wgpu::Device, queue: &wgpu::Queue, bg_layout: Rc<wgpu::BindGroupLayout>, img: &image::DynamicImage, label: Option<&str>) -> anyhow::Result<Self> {
+    pub fn from_image(device: &wgpu::Device, queue: &wgpu::Queue, bg_layout: Arc<wgpu::BindGroupLayout>, img: &image::DynamicImage, label: Option<&str>) -> anyhow::Result<Self> {
         let rgba = img.to_rgba8();
         let dimensions = img.dimensions();
 
@@ -134,7 +134,7 @@ impl RenderTexture {
         })
     }
 
-    pub fn from_resource(device: &wgpu::Device, queue: &wgpu::Queue, bg_layout: Rc<wgpu::BindGroupLayout>, texture_res: &ResHandle<Texture>, label: Option<&str>) -> anyhow::Result<Self> {
+    pub fn from_resource(device: &wgpu::Device, queue: &wgpu::Queue, bg_layout: Arc<wgpu::BindGroupLayout>, texture_res: &ResHandle<Texture>, label: Option<&str>) -> anyhow::Result<Self> {
         let texture_ref = texture_res.data_ref().unwrap();
         let img = texture_ref.image.data_ref().unwrap();
 
@@ -371,7 +371,7 @@ impl RenderTexture {
 
 /// Convert [`lyra_resource::WrappingMode`] to [`wgpu::AddressMode`]
 #[inline(always)]
-fn res_wrap_to_wgpu(wmode: WrappingMode) -> wgpu::AddressMode {
+pub(crate) fn res_wrap_to_wgpu(wmode: WrappingMode) -> wgpu::AddressMode {
     match wmode {
         WrappingMode::ClampToEdge => wgpu::AddressMode::ClampToEdge,
         WrappingMode::MirroredRepeat => wgpu::AddressMode::MirrorRepeat,
@@ -381,7 +381,7 @@ fn res_wrap_to_wgpu(wmode: WrappingMode) -> wgpu::AddressMode {
 
 /// Convert [`lyra_resource::FilterMode`] to [`wgpu::FilterMode`]
 #[inline(always)]
-fn res_filter_to_wgpu(fmode: FilterMode) -> wgpu::FilterMode {
+pub(crate) fn res_filter_to_wgpu(fmode: FilterMode) -> wgpu::FilterMode {
     match fmode {
         FilterMode::Nearest => wgpu::FilterMode::Nearest,
         FilterMode::Linear => wgpu::FilterMode::Linear,

lyra-game/src/render/transform_buffer_storage.rs

@@ -1,4 +1,4 @@
-use std::{collections::{HashMap, VecDeque}, hash::{BuildHasher, DefaultHasher, Hash, Hasher, RandomState}, num::NonZeroU64, rc::Rc};
+use std::{collections::{HashMap, VecDeque}, hash::{BuildHasher, DefaultHasher, Hash, Hasher, RandomState}, num::NonZeroU64, sync::Arc};
 
 use lyra_ecs::Entity;
 use tracing::instrument;
@@ -165,7 +165,7 @@ impl<K: Hash + Eq + PartialEq + Clone, V: Clone, S: BuildHasher> CachedValMap<K,
 /// [`TransformGroup`]s are used to represent entries in the buffer. They are used to insert,
 /// update, and retrieve the transforms.
 pub struct TransformBuffers {
-    pub bindgroup_layout: Rc<wgpu::BindGroupLayout>,
+    pub bindgroup_layout: Arc<wgpu::BindGroupLayout>,
     //groups: CachedValMap<TransformGroupId, TransformIndex>,
     //groups: SlotMap<TransformGroupId, TransformIndex>,
     entries: Vec<BufferEntry>,
@@ -195,7 +195,7 @@ impl TransformBuffers {
         });
 
         let mut s = Self {
-            bindgroup_layout: Rc::new(bindgroup_layout),
+            bindgroup_layout: Arc::new(bindgroup_layout),
             entries: Default::default(),
             max_transform_count: (limits.max_uniform_buffer_binding_size) as usize / (limits.min_uniform_buffer_offset_alignment as usize), //(mem::size_of::<glam::Mat4>()),
             limits,
@@ -345,9 +345,6 @@ impl TransformBuffers {
     /// Returns a boolean indicating if the buffers need to be expanded
     pub fn needs_expand(&self) -> bool {
         false
-        /* self.entries.last()
-            .map(|entry| entry.len >= self.max_transform_count)
-            .unwrap_or(false) */
     }
 }
 

lyra-resource/src/gltf/material.rs

@@ -95,7 +95,7 @@ impl From<gltf::material::AlphaMode> for AlphaMode {
     }
 }
 
-#[derive(Clone, Reflect)]
+#[derive(Clone, Reflect, Default)]
 pub struct Specular {
     /// The strength of the specular reflection, default of 1.0
     pub factor: f32,