Use target format from render state

src/window/game_screen.rs

@@ -71,7 +71,7 @@ impl GameScreen {
                     module: &shader,
                     entry_point: Some(entry_point),
                     targets: &[Some(wgpu::ColorTargetState {
-                        format: wgpu::TextureFormat::Bgra8Unorm,
+                        format: render_state.target_format,
                         blend: Some(wgpu::BlendState::REPLACE),
                         write_mask: wgpu::ColorWrites::ALL,
                     })],