feat(rendering): add default checkerboard texture

src/main.rs

@@ -1,12 +1,13 @@
 use bytemuck::bytes_of;
-use image::EncodableLayout;
 use std::collections::BTreeMap;
 use std::io::BufReader;
 use std::sync::Arc;
-use tobj::LoadOptions;
+use std::time::Instant;
 use tracing::info;
 use wgpu::util::DeviceExt;
-use wgpu::{Backends, BufferUsages, Device, FragmentState, IndexFormat, Instance, InstanceDescriptor, PipelineCompilationOptions};
+use wgpu::{
+    Backends, FragmentState, IndexFormat, Instance, InstanceDescriptor, PipelineCompilationOptions,
+};
 use winit::application::ApplicationHandler;
 use winit::event::{ElementState, MouseButton};
 use winit::event_loop::{ActiveEventLoop, EventLoop};
@@ -45,8 +46,9 @@ struct WgpuRenderer<'surface> {
     camera_buffer: wgpu::Buffer,
     camera_bind_group: wgpu::BindGroup,
     pumpkin: model::Model,
-
-    zenyx_logo: wgpu::BindGroup,
+    delta: f32,
+    last_frame_time: Instant,
+    default_texture: wgpu::BindGroup,
 }
 
 impl WgpuRenderer<'_> {
@@ -88,7 +90,7 @@ impl WgpuRenderer<'_> {
                     .material
                     .and_then(|i| self.pumpkin.materials.get(i))
                     .map(|m| &m.bind_group)
-                    .unwrap_or(&self.zenyx_logo);
+                    .unwrap_or(&self.default_texture);
                 rpass.set_bind_group(1, bind_group, &[]);
                 rpass.set_vertex_buffer(0, mesh.vertex_buffer.slice(..));
                 rpass.set_index_buffer(mesh.index_buffer.slice(..), IndexFormat::Uint32);
@@ -96,7 +98,11 @@ impl WgpuRenderer<'_> {
             }
         }
         self.queue.submit(Some(encoder.finish()));
-        surface_texture.present()
+        let delta_time = std::time::Instant::now() - self.last_frame_time;
+        self.delta = delta_time.as_secs_f32();
+        info!("{}", self.delta);
+        surface_texture.present();
+        self.last_frame_time = std::time::Instant::now();
     }
 }
 
@@ -134,8 +140,8 @@ struct WgpuState {
     instance: wgpu::Instance,
 }
 
-static ICON: &[u8] = include_bytes!(concat!(env!("CARGO_MANIFEST_DIR"), "/assets/Badge.png"));
-static PUMPKIN: &[u8] = include_bytes!(concat!(env!("CARGO_MANIFEST_DIR"), "/Pumpkin.obj"));
+static _ICON: &[u8] = include_bytes!(concat!(env!("CARGO_MANIFEST_DIR"), "/assets/Badge.png"));
+static _PUMPKIN: &[u8] = include_bytes!(concat!(env!("CARGO_MANIFEST_DIR"), "/Pumpkin.obj"));
 
 impl WgpuState {
     fn new() -> Self {
@@ -303,24 +309,35 @@ impl WgpuState {
             &queue,
             &texture_bind_group_layout,
         );
+        let checkerboard_img = crate::texture::create_checkerboard();
+        let checkerboard_texture =
+            texture::Texture::from_image(&device, &queue, &checkerboard_img, Some("checkerboard"))
+                .unwrap();
 
-        let zenyx_logo = texture::Texture::from_bytes(&device, &queue, ICON, "zenyx-icon").unwrap();
+        let checkerboard_sampler = device.create_sampler(&wgpu::SamplerDescriptor {
+            address_mode_u: wgpu::AddressMode::Repeat,
+            address_mode_v: wgpu::AddressMode::Repeat,
+            address_mode_w: wgpu::AddressMode::Repeat,
+            mag_filter: wgpu::FilterMode::Nearest,
+            min_filter: wgpu::FilterMode::Nearest,
+            mipmap_filter: wgpu::FilterMode::Nearest,
+            ..Default::default()
+        });
 
-        let zenyx_logo = device.create_bind_group(&wgpu::BindGroupDescriptor {
-            label: Some("zenyx-logo-diffuse"),
+        let default_texture = device.create_bind_group(&wgpu::BindGroupDescriptor {
+            label: Some("checkerboard-bind-group"),
             layout: &texture_bind_group_layout,
             entries: &[
                 wgpu::BindGroupEntry {
                     binding: 0,
-                    resource: wgpu::BindingResource::TextureView(&zenyx_logo.view),
+                    resource: wgpu::BindingResource::TextureView(&checkerboard_texture.view),
                 },
                 wgpu::BindGroupEntry {
                     binding: 1,
-                    resource: wgpu::BindingResource::Sampler(&zenyx_logo.sampler),
+                    resource: wgpu::BindingResource::Sampler(&checkerboard_sampler),
                 },
             ],
         });
-
         let (depth_texture, depth_texture_view) =
             create_depth_texture(&device, surface_config.width, surface_config.height);
         let camera = camera::Camera {
@@ -370,10 +387,11 @@ impl WgpuState {
             camera_bind_group,
             depth_texture_view,
             pumpkin,
-            zenyx_logo,
+            default_texture,
+            delta: 0f32,
+            last_frame_time: Instant::now(),
         }
     }
-
 }
 
 fn create_depth_texture(

src/texture.rs

@@ -85,3 +85,24 @@ impl Texture {
         })
     }
 }
+
+pub fn create_checkerboard() -> image::DynamicImage {
+    let size = 512;
+    let tile_size = 24;
+    let mut img = image::RgbaImage::new(size, size);
+
+    for y in 0..size {
+        for x in 0..size {
+            let tile_x = x / tile_size;
+            let tile_y = y / tile_size;
+            let color = if (tile_x + tile_y) % 2 == 0 {
+                [0, 0, 0, 255]
+            } else {
+                [255, 5, 255, 255]
+            };
+            img.put_pixel(x, y, image::Rgba(color));
+        }
+    }
+
+    image::DynamicImage::ImageRgba8(img)
+}