minor changes

kubi/shaders/world.wgsl

@@ -0,0 +1,42 @@
+// struct Uniforms {
+//   transform: mat4x4<f32>;
+// };
+
+// @group(1) @binding(0)
+// var<uniform> uniforms: Uniforms;
+
+struct VertexInput {
+  @location(0) position: vec3<f32>,
+  @location(1) normal: vec3<f32>,
+  @location(2) uv: vec2<f32>,
+  @location(3) @interpolate(flat) tex_index: u32,
+}
+
+struct VertexOutput {
+  @builtin(position) clip_position: vec4<f32>,
+  @location(0) uv: vec2<f32>,
+  @location(1) normal: vec3<f32>,
+  @location(2) color: vec4<f32>,
+  @location(3) @interpolate(flat) tex_index: u32,
+};
+
+@vertex
+fn vs_main(
+  in: VertexInput,
+) -> VertexOutput {
+  var out: VertexOutput;
+  out.uv = in.uv;
+  out.clip_position = vec4<f32>(in.position, 1.0);
+  return out;
+}
+
+@group(0) @binding(0)
+var t_diffuse: texture_2d_array<f32>;
+
+@group(0) @binding(1)
+var s_diffuse: sampler;
+
+@fragment
+fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
+  return textureSample(t_diffuse, s_diffuse, in.uv, in.tex_index);
+}

kubi/src/prefabs.rs

@@ -5,9 +5,7 @@ use kubi_shared::block::BlockTexture;
 use crate::{filesystem::AssetManager, hui_integration::UiState, rendering::Renderer};
 
 mod texture;
-mod shaders;
-
-//use texture::load_texture2darray_prefab;
+use texture::load_texture2darray_prefab;
 
 pub trait AssetPaths {
   fn file_name(self) -> &'static str;
@@ -39,19 +37,7 @@ impl AssetPaths for BlockTexture {
 
 #[derive(Unique)]
 #[repr(transparent)]
-pub struct BlockTexturesPrefab(pub wgpu::Texture);
-
-// #[derive(Unique)]
-// #[repr(transparent)]
-// pub struct ChunkShaderPrefab(pub Program);
-
-// #[derive(Unique)]
-// #[repr(transparent)]
-// pub struct ColoredShaderPrefab(pub Program);
-
-// #[derive(Unique)]
-// #[repr(transparent)]
-// pub struct Colored2ShaderPrefab(pub Program);
+pub struct BlockDiffuseTexture(pub wgpu::Texture);
 
 #[derive(Unique)]
 #[repr(transparent)]
@@ -63,15 +49,14 @@ pub fn load_prefabs(
   mut ui: NonSendSync<UniqueViewMut<UiState>>,
   assman: UniqueView<AssetManager>
 ) {
-  // log::info!("Loading textures...");
-  // storages.add_unique_non_send_sync(BlockTexturesPrefab(
-  //   load_texture2darray_prefab::<BlockTexture, _>(
-  //     &assman,
-  //     "blocks".into(),
-  //     &renderer.display,
-  //     MipmapsOption::AutoGeneratedMipmaps
-  //   )
-  // ));
+  log::info!("Loading textures...");
+  storages.add_unique_non_send_sync(BlockDiffuseTexture(
+    load_texture2darray_prefab::<BlockTexture>(
+      &renderer,
+      &assman,
+      "blocks".into(),
+    )
+  ));
 
   log::info!("Loading the UI stuff...");
   {

kubi/src/prefabs/shaders.rs

@@ -1,19 +0,0 @@
-macro_rules! include_shader_prefab {
-  ($name: literal, $vert: literal, $frag: literal, $facade: expr) => {
-    {
-      use ::glium::{Program, program::ProgramCreationInput};
-      log::info!("compiling shader {}", $name);
-      Program::new(&*$facade, ProgramCreationInput::SourceCode {
-        vertex_shader: include_str!($vert),
-        fragment_shader: include_str!($frag),
-        geometry_shader: None,
-        tessellation_control_shader: None,
-        tessellation_evaluation_shader: None,
-        transform_feedback_varyings: None,
-        outputs_srgb: false,
-        uses_point_size: false,
-      }).expect("Failed to compile gpu program")
-    }
-  };
-}
-pub(crate) use include_shader_prefab;

kubi/src/prefabs/texture.rs

@@ -1,45 +1,75 @@
-// use strum::IntoEnumIterator;
-// use rayon::prelude::*;
-// use std::{path::PathBuf, io::BufReader};
-// use crate::filesystem::AssetManager;
-// use super::AssetPaths;
+use glam::UVec2;
+use strum::IntoEnumIterator;
+use rayon::prelude::*;
+use wgpu::util::{DeviceExt, TextureDataOrder};
+use std::{io::BufReader, path::PathBuf};
+use crate::{filesystem::AssetManager, rendering::Renderer};
+use super::AssetPaths;
 
-// pub fn load_texture2darray_prefab<
-//   T: AssetPaths + IntoEnumIterator,
-//   E: Facade
-// >(
-//   assman: &AssetManager,
-//   directory: PathBuf,
-//   facade: &E,
-//   mipmaps: MipmapsOption,
-// ) -> SrgbTexture2dArray {
-//   log::info!("started loading {}", directory.as_os_str().to_str().unwrap());
-//   //Load raw images
-//   let tex_files: Vec<&'static str> = T::iter().map(|x| x.file_name()).collect();
-//   let raw_images: Vec<RawImage2d<u8>> = tex_files.par_iter().map(|&file_name| {
-//     log::info!("loading texture {}", file_name);
-//     //Get path to the image and open the file
-//     let reader = {
-//       let path = directory.join(file_name);
-//       BufReader::new(assman.open_asset(&path).expect("Failed to open texture file"))
-//     };
-//     //Parse image data
-//     let (image_data, dimensions) = {
-//       let image = image::load(
-//         reader,
-//         image::ImageFormat::Png
-//       ).unwrap().to_rgba8();
-//       let dimensions = image.dimensions();
-//       (image.into_raw(), dimensions)
-//     };
-//     //Create a glium RawImage
-//     RawImage2d::from_raw_rgba_reversed(
-//       &image_data,
-//       dimensions
-//     )
-//   }).collect();
-//   log::info!("done loading texture files, uploading to the gpu");
-//   //Upload images to the GPU
-//   SrgbTexture2dArray::with_mipmaps(facade, raw_images, mipmaps)
-//     .expect("Failed to upload texture array to GPU")
-// }
+pub fn load_texture2darray_prefab<T: AssetPaths + IntoEnumIterator>(
+  renderer: &Renderer,
+  assman: &AssetManager,
+  directory: PathBuf,
+) -> wgpu::Texture {
+  log::info!("started loading {}", directory.as_os_str().to_str().unwrap());
+
+  //Load raw images
+  let tex_files: Vec<&'static str> = T::iter().map(|x| x.file_name()).collect();
+  let raw_images: Vec<(Vec<u8>, UVec2)> = tex_files.par_iter().map(|&file_name| {
+    log::info!("loading texture {}", file_name);
+
+    //Get path to the image and open the file
+    let reader = {
+      let path = directory.join(file_name);
+      BufReader::new(assman.open_asset(&path).expect("Failed to open texture file"))
+    };
+
+    //Parse image data
+    let (image_data, dimensions) = {
+      let image = image::load(
+        reader,
+        image::ImageFormat::Png
+      ).unwrap().to_rgba8();
+      let dimensions = image.dimensions();
+      (image.into_raw(), dimensions)
+    };
+    (image_data, UVec2::from(dimensions))
+  }).collect();
+
+  assert!(!raw_images.is_empty(), "no images loaded");
+  //TODO: check same size
+
+  log::info!("done loading texture files, uploading to the gpu");
+
+  let size = raw_images[0].1;
+  let layers = raw_images.len() as u32;
+
+  //Concat data into a single vec
+  let mut data = Vec::with_capacity((size.x * size.y * layers * 4) as usize);
+  for (layer_data, _) in raw_images {
+    data.extend_from_slice(&layer_data);
+  }
+
+  //Upload images to the GPU
+  let desc = &wgpu::TextureDescriptor {
+    label: Some("block_diffuse_texture"),
+    size: wgpu::Extent3d {
+      width: size.x,
+      height: size.y,
+      depth_or_array_layers: layers,
+    },
+    dimension: wgpu::TextureDimension::D2,
+    format: wgpu::TextureFormat::Rgba8UnormSrgb,
+    usage: wgpu::TextureUsages::TEXTURE_BINDING | wgpu::TextureUsages::COPY_DST,
+    mip_level_count: 1,
+    sample_count: 1,
+    view_formats: &[],
+  };
+
+  renderer.device().create_texture_with_data(
+    renderer.queue(),
+    desc,
+    TextureDataOrder::MipMajor,
+    &data
+  )
+}

kubi/src/rendering.rs

@@ -1,14 +1,10 @@
-use pollster::FutureExt;
-use raw_window_handle::HasRawWindowHandle;
-use shipyard::{AllStoragesView, AllStoragesViewMut, IntoIter, NonSendSync, Unique, UniqueView, UniqueViewMut, View};
-use wgpu::SurfaceTargetUnsafe;
-use winit::{
-  event_loop::ActiveEventLoop,
-  window::{WindowAttributes, Fullscreen, Window},
-  dpi::PhysicalSize
-};
+use shipyard::{AllStoragesView, AllStoragesViewMut, IntoIter, Unique, UniqueView, UniqueViewMut, View};
+use winit::dpi::PhysicalSize;
 use glam::{Vec3, UVec2};
-use crate::{events::WindowResizedEvent, settings::{FullscreenMode, GameSettings}, state::is_ingame};
+use crate::{events::WindowResizedEvent, state::is_ingame};
+
+mod renderer;
+pub use renderer::Renderer;
 
 pub mod primitives;
 pub mod world;
@@ -22,174 +18,20 @@ pub struct BufferPair {
 }
 
 #[derive(Unique)]
-#[repr(transparent)]
 pub struct BackgroundColor(pub Vec3);
 
-#[derive(Unique, Clone, Copy)]
-#[repr(transparent)]
-#[deprecated = "use Renderer.size instead"]
-#[allow(deprecated)]
-pub struct WindowSize(pub UVec2);
-
-#[derive(Unique)]
-pub struct Renderer {
-  instance: wgpu::Instance,
-  surface: wgpu::Surface<'static>,
-  device: wgpu::Device,
-  queue: wgpu::Queue,
-  surface_config: wgpu::SurfaceConfiguration,
-  size: PhysicalSize<u32>,
-  // pub depth_texture: wgpu::Texture,
-
-  //must be last due to drop order
-  window: Window,
-}
-
-impl Renderer {
-  pub fn init(event_loop: &ActiveEventLoop, settings: &GameSettings) -> Self {
-    log::info!("initializing display");
-
-    let window_attributes = Window::default_attributes()
-      .with_title("kubi")
-      .with_maximized(true)
-      .with_min_inner_size(PhysicalSize::new(640, 480))
-      .with_fullscreen({
-        //this has no effect on android, so skip this pointless stuff
-        #[cfg(target_os = "android")] {
-          None
-        }
-        #[cfg(not(target_os = "android"))]
-        if let Some(fs_settings) = &settings.fullscreen {
-          let monitor = event_loop.primary_monitor().or_else(|| {
-            event_loop.available_monitors().next()
-          });
-
-          if let Some(monitor) = monitor {
-            log::info!("monitor: {}", monitor.name().unwrap_or_else(|| "generic".into()));
-            match fs_settings.mode {
-              FullscreenMode::Borderless => {
-                log::info!("starting in borderless fullscreen mode");
-                Some(Fullscreen::Borderless(Some(monitor)))
-              },
-              FullscreenMode::Exclusive => {
-                log::warn!("exclusive fullscreen mode is experimental");
-                log::info!("starting in exclusive fullscreen mode");
-                //TODO: grabbing the first video mode is probably not the best idea...
-                monitor.video_modes().next()
-                  .map(|vmode| {
-                    log::info!("video mode: {}", vmode.to_string());
-                    Some(Fullscreen::Exclusive(vmode))
-                  })
-                  .unwrap_or_else(|| {
-                    log::warn!("no valid video modes found, falling back to windowed mode instead");
-                    None
-                  })
-              }
-            }
-          } else {
-            log::warn!("no monitors found, falling back to windowed mode");
-            None
-          }
-        } else {
-          log::info!("starting in windowed mode");
-          None
-        }
-      });
-    let window = event_loop.create_window(window_attributes).unwrap();
-
-    let size = window.inner_size();
-
-    let instance = wgpu::Instance::new(wgpu::InstanceDescriptor {
-      backends: wgpu::Backends::BROWSER_WEBGPU | wgpu::Backends::VULKAN | wgpu::Backends::GL,
-      ..Default::default()
-    });
-
-    // Create a surface with `create_surface_unsafe` to get a surface with 'static lifetime
-    // It should never outlive the window it's created from
-    let surface = unsafe {
-      instance.create_surface_unsafe(SurfaceTargetUnsafe::from_window(&window).unwrap()).unwrap()
-    };
-
-    let adapter = instance.request_adapter(
-      &wgpu::RequestAdapterOptions {
-        power_preference: wgpu::PowerPreference::HighPerformance,
-        compatible_surface: Some(&surface),
-        force_fallback_adapter: false,
-      },
-    ).block_on().unwrap();
-
-    let (device, queue) = adapter.request_device(
-      &wgpu::DeviceDescriptor {
-        label: None,
-        required_features: wgpu::Features::empty(),
-        required_limits: wgpu::Limits::downlevel_defaults(),
-      },
-      None,
-    ).block_on().unwrap();
-
-    let surface_config = surface.get_default_config(&adapter, size.width, size.height).unwrap();
-    surface.configure(&device, &surface_config);
-
-    Self { window, instance, surface, device, queue, surface_config, size }
-  }
-
-  pub fn resize(&mut self, size: PhysicalSize<u32>) {
-    if size.width == 0 || size.height == 0 {
-      log::warn!("Ignoring resize event with zero width or height");
-      return
-    }
-    if self.size == size {
-      log::warn!("Ignoring resize event with same size");
-      return
-    }
-    log::debug!("resizing surface to {:?}", size);
-    self.size = size;
-    self.surface_config.width = size.width;
-    self.surface_config.height = size.height;
-    self.surface.configure(&self.device, &self.surface_config);
-  }
-
-  pub fn reconfigure(&self) {
-    self.surface.configure(&self.device, &self.surface_config);
-  }
-
-  //getters:
-  pub fn size(&self) -> PhysicalSize<u32> {
-    self.size
-  }
-
-  pub fn window(&self) -> &Window {
-    &self.window
-  }
-
-  pub fn surface(&self) -> &wgpu::Surface<'static> {
-    &self.surface
-  }
-
-  pub fn device(&self) -> &wgpu::Device {
-    &self.device
-  }
-
-  pub fn queue(&self) -> &wgpu::Queue {
-    &self.queue
-  }
-
-  pub fn surface_config(&self) -> &wgpu::SurfaceConfiguration {
-    &self.surface_config
-  }
-}
-
 pub fn render_master(storages: AllStoragesViewMut) {
   let renderer = storages.borrow::<UniqueView<Renderer>>().unwrap();
 
-  let mut encoder = renderer.device.create_command_encoder(&wgpu::CommandEncoderDescriptor {
+  let mut encoder = renderer.device().create_command_encoder(&wgpu::CommandEncoderDescriptor {
     label: Some("main_encoder"),
   });
   let surface_texture = renderer.surface().get_current_texture().unwrap();
   let surface_view = surface_texture.texture.create_view(&wgpu::TextureViewDescriptor::default());
 
+  //Main in-game render pass
   if storages.run(is_ingame) {
-    let bg_color = storages.borrow::<UniqueView<BackgroundColor>>().unwrap();
+    let bg = storages.borrow::<UniqueView<BackgroundColor>>().unwrap().0;
     let mut render_pass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
       label: Some("main0_pass"),
       color_attachments: &[Some(wgpu::RenderPassColorAttachment {
@@ -197,9 +39,9 @@ pub fn render_master(storages: AllStoragesViewMut) {
         resolve_target: None,
         ops: wgpu::Operations {
           load: wgpu::LoadOp::Clear(wgpu::Color {
-            r: bg_color.0.x as f64,
-            g: bg_color.0.y as f64,
-            b: bg_color.0.z as f64,
+            r: bg.x as f64,
+            g: bg.y as f64,
+            b: bg.z as f64,
             a: 1.0,
           }),
           store: wgpu::StoreOp::Store,
@@ -212,27 +54,13 @@ pub fn render_master(storages: AllStoragesViewMut) {
     let data = (&mut render_pass, &*renderer);
 
     storages.run_with_data(world::draw_world, data);
-
-    // render_pass.set_pipeline(&renderer.pipeline);
-    // render_pass.set_bind_group(0, &renderer.bind_group, &[]);
-    // render_pass.set_vertex_buffer(0, renderer.vertex_buffer.slice(..));
-    // render_pass.set_index_buffer(renderer.index_buffer.slice(..));
-    // render_pass.draw_indexed(0..renderer.num_indices, 0, 0..1);
   }
 
   renderer.queue().submit(std::iter::once(encoder.finish()));
   surface_texture.present();
 }
 
-// pub fn clear_background(
-//   mut target: NonSendSync<UniqueViewMut<RenderTarget>>,
-//   color: UniqueView<BackgroundColor>,
-// ) {
-//   target.0.clear_color_srgb_and_depth((color.0.x, color.0.y, color.0.z, 1.), 1.);
-// }
-
-//Resize the renderer
-
+/// Resize the renderer when the window is resized
 pub fn resize_renderer(
   mut renderer: UniqueViewMut<Renderer>,
   resize: View<WindowResizedEvent>,
@@ -242,11 +70,15 @@ pub fn resize_renderer(
   }
 }
 
-//not sure if this belongs here
+//Deprecated WindowSize thingy
 
-pub fn init_window_size(
-  storages: AllStoragesView,
-) {
+#[derive(Unique, Clone, Copy)]
+#[repr(transparent)]
+#[deprecated = "use Renderer.size instead"]
+#[allow(deprecated)]
+pub struct WindowSize(pub UVec2);
+
+pub fn init_window_size(storages: AllStoragesView) {
   let size = storages.borrow::<View<WindowResizedEvent>>().unwrap().iter().next().unwrap().0;
   storages.add_unique(WindowSize(size))
 }
@@ -260,8 +92,8 @@ pub fn update_window_size(
   }
 }
 
-pub fn if_resized (
-  resize: View<WindowResizedEvent>,
-) -> bool {
-  resize.len() > 0
-}
+// pub fn if_resized (
+//   resize: View<WindowResizedEvent>,
+// ) -> bool {
+//   resize.len() > 0
+// }

kubi/src/rendering/renderer.rs

@@ -0,0 +1,157 @@
+use pollster::FutureExt;
+use shipyard::Unique;
+use winit::{
+  event_loop::ActiveEventLoop,
+  window::{Fullscreen, Window},
+  dpi::PhysicalSize
+};
+use crate::settings::{GameSettings, FullscreenMode};
+
+#[derive(Unique)]
+pub struct Renderer {
+  instance: wgpu::Instance,
+  surface: wgpu::Surface<'static>,
+  device: wgpu::Device,
+  queue: wgpu::Queue,
+  surface_config: wgpu::SurfaceConfiguration,
+  size: PhysicalSize<u32>,
+  // pub depth_texture: wgpu::Texture,
+
+  //must be last due to drop order
+  window: Window,
+}
+
+impl Renderer {
+  pub fn init(event_loop: &ActiveEventLoop, settings: &GameSettings) -> Self {
+    log::info!("initializing display");
+
+    let window_attributes = Window::default_attributes()
+      .with_title("kubi")
+      .with_maximized(true)
+      .with_min_inner_size(PhysicalSize::new(640, 480))
+      .with_fullscreen({
+        //this has no effect on android, so skip this pointless stuff
+        #[cfg(target_os = "android")] {
+          None
+        }
+        #[cfg(not(target_os = "android"))]
+        if let Some(fs_settings) = &settings.fullscreen {
+          let monitor = event_loop.primary_monitor().or_else(|| {
+            event_loop.available_monitors().next()
+          });
+
+          if let Some(monitor) = monitor {
+            log::info!("monitor: {}", monitor.name().unwrap_or_else(|| "generic".into()));
+            match fs_settings.mode {
+              FullscreenMode::Borderless => {
+                log::info!("starting in borderless fullscreen mode");
+                Some(Fullscreen::Borderless(Some(monitor)))
+              },
+              FullscreenMode::Exclusive => {
+                log::warn!("exclusive fullscreen mode is experimental");
+                log::info!("starting in exclusive fullscreen mode");
+                //TODO: grabbing the first video mode is probably not the best idea...
+                monitor.video_modes().next()
+                  .map(|vmode| {
+                    log::info!("video mode: {}", vmode.to_string());
+                    Some(Fullscreen::Exclusive(vmode))
+                  })
+                  .unwrap_or_else(|| {
+                    log::warn!("no valid video modes found, falling back to windowed mode instead");
+                    None
+                  })
+              }
+            }
+          } else {
+            log::warn!("no monitors found, falling back to windowed mode");
+            None
+          }
+        } else {
+          log::info!("starting in windowed mode");
+          None
+        }
+      });
+    let window = event_loop.create_window(window_attributes).unwrap();
+
+    let size = window.inner_size();
+
+    let instance = wgpu::Instance::new(wgpu::InstanceDescriptor {
+      backends: wgpu::Backends::BROWSER_WEBGPU | wgpu::Backends::VULKAN | wgpu::Backends::GL,
+      ..Default::default()
+    });
+
+    // Create a surface with `create_surface_unsafe` to get a surface with 'static lifetime
+    // It should never outlive the window it's created from
+    let surface = unsafe {
+      let target = wgpu::SurfaceTargetUnsafe::from_window(&window).unwrap();
+      instance.create_surface_unsafe(target).unwrap()
+    };
+
+    let adapter = instance.request_adapter(
+      &wgpu::RequestAdapterOptions {
+        power_preference: wgpu::PowerPreference::HighPerformance,
+        compatible_surface: Some(&surface),
+        force_fallback_adapter: false,
+      },
+    ).block_on().unwrap();
+
+    let (device, queue) = adapter.request_device(
+      &wgpu::DeviceDescriptor {
+        label: None,
+        required_features: wgpu::Features::empty(),
+        required_limits: wgpu::Limits::downlevel_defaults(),
+      },
+      None,
+    ).block_on().unwrap();
+
+    let surface_config = surface.get_default_config(&adapter, size.width, size.height).unwrap();
+    surface.configure(&device, &surface_config);
+
+    Self { window, instance, surface, device, queue, surface_config, size }
+  }
+
+  pub fn resize(&mut self, size: PhysicalSize<u32>) {
+    if size.width == 0 || size.height == 0 {
+      log::warn!("Ignoring resize event with zero width or height");
+      return
+    }
+    if self.size == size {
+      log::warn!("Ignoring resize event with same size");
+      return
+    }
+    log::debug!("resizing surface to {:?}", size);
+    self.size = size;
+    self.surface_config.width = size.width;
+    self.surface_config.height = size.height;
+    self.surface.configure(&self.device, &self.surface_config);
+  }
+
+  pub fn reconfigure(&self) {
+    self.surface.configure(&self.device, &self.surface_config);
+  }
+
+  //getters:
+  pub fn size(&self) -> PhysicalSize<u32> {
+    self.size
+  }
+
+  pub fn window(&self) -> &Window {
+    &self.window
+  }
+
+  pub fn surface(&self) -> &wgpu::Surface<'static> {
+    &self.surface
+  }
+
+  pub fn device(&self) -> &wgpu::Device {
+    &self.device
+  }
+
+  pub fn queue(&self) -> &wgpu::Queue {
+    &self.queue
+  }
+
+  pub fn surface_config(&self) -> &wgpu::SurfaceConfiguration {
+    &self.surface_config
+  }
+}

kubi/src/rendering/world.rs

@@ -1,7 +1,7 @@
 use bytemuck::{Pod, Zeroable};
-use glam::IVec3;
-use shipyard::{AllStoragesView, NonSendSync, Unique, UniqueView, UniqueViewMut, View};
-use kubi_shared::transform::Transform;
+use glam::{IVec3, Vec3};
+use shipyard::{AllStoragesView, IntoIter, NonSendSync, Unique, UniqueView, UniqueViewMut, View};
+use kubi_shared::{chunk::CHUNK_SIZE, transform::Transform};
 use crate::{camera::Camera, settings::GameSettings, world::{ChunkMeshStorage, ChunkStorage}};
 use super::Renderer;
 
@@ -43,7 +43,37 @@ pub fn draw_world(
   settings: UniqueView<GameSettings>,
   mut trans_queue: UniqueViewMut<TransChunkQueue>,
 ) {
+  let camera = camera.iter().next().expect("No cameras in the scene");
+  let camera_matrix = camera.view_matrix * camera.perspective_matrix;
+
+  for (&position, chunk) in &chunks.chunks {
+    if let Some(key) = chunk.mesh_index {
+      let mesh = meshes.get(key).expect("Mesh index pointing to nothing");
+      let world_position = position.as_vec3() * CHUNK_SIZE as f32;
+
+      //Skip if mesh is empty
+      if mesh.main.index.size() == 0 && mesh.trans.index.size() == 0 {
+        continue
+      }
+
+      //Frustum culling
+      let minp = world_position;
+      let maxp = world_position + Vec3::splat(CHUNK_SIZE as f32);
+      if !camera.frustum.is_box_visible(minp, maxp) {
+        continue
+      }
+
+      //Draw chunk mesh
+      if mesh.main.index.size() > 0 {
         //TODO
+      }
+
+      //TODO trans chunks
+      // if mesh.trans_index_buffer.len() > 0 {
+      //   trans_queue.0.push(position);
+      // }
+    }
+  }
 }