Write textures in separate thread; fixes perf

src/app/game.rs

@@ -1,4 +1,4 @@
-use std::{sync::Arc, time::Instant};
+use std::time::Instant;
 use wgpu::util::DeviceExt as _;
 use winit::{
     dpi::LogicalSize,
@@ -9,7 +9,7 @@ use winit::{
 
 use crate::{
     emulator::{EmulatorClient, EmulatorCommand, SimId},
-    renderer::GameRenderer,
+    graphics::TextureSink,
 };
 
 use super::{
@@ -46,15 +46,8 @@ impl GameWindow {
             .build();
         let device = &window.device;
 
-        let eyes = Arc::new(GameRenderer::create_texture(device, "eye"));
-        client.send_command(EmulatorCommand::SetRenderer(
-            sim_id,
-            GameRenderer {
-                queue: window.queue.clone(),
-                eyes: eyes.clone(),
-            },
-        ));
-        let eyes = eyes.create_view(&wgpu::TextureViewDescriptor::default());
+        let (sink, texture_view) = TextureSink::new(device, window.queue.clone());
+        client.send_command(EmulatorCommand::SetRenderer(sim_id, sink));
         let sampler = device.create_sampler(&wgpu::SamplerDescriptor::default());
         let colors = Colors {
             left: [1.0, 0.0, 0.0, 1.0],
@@ -103,7 +96,7 @@ impl GameWindow {
             entries: &[
                 wgpu::BindGroupEntry {
                     binding: 0,
-                    resource: wgpu::BindingResource::TextureView(&eyes),
+                    resource: wgpu::BindingResource::TextureView(&texture_view),
                 },
                 wgpu::BindGroupEntry {
                     binding: 1,