Depth buffer

Source/Main.rs

@@ -99,6 +99,7 @@ struct State {
     camera_controller: CameraController,
     instances: Vec<Instance>,
     instance_buffer: wgpu::Buffer,
+    depth_texture: Texture,
 }
 
 impl State {
@@ -290,6 +291,8 @@ impl State {
             label: Some("camera_bind_group"),
         });
 
+        let depth_texture = Texture::create_depth_texture(&device, &config, "depth_texture");
+
         // Shader
 
         let shader = device.create_shader_module(&wgpu::ShaderModuleDescriptor {
@@ -337,11 +340,17 @@ impl State {
                 // Requires Features::CONSERVATIVE_RASTERIZATION
                 conservative: false,
             },
-            depth_stencil: None, // 1.
+            depth_stencil: Some(wgpu::DepthStencilState {
+                format: Texture::DEPTH_FORMAT,
+                depth_write_enabled: true,
+                depth_compare: wgpu::CompareFunction::Less,
+                stencil: wgpu::StencilState::default(),
+                bias: wgpu::DepthBiasState::default(),
+            }),
             multisample: wgpu::MultisampleState {
-                count: 1,                         // 2.
-                mask: !0,                         // 3.
-                alpha_to_coverage_enabled: false, // 4.
+                count: 1,
+                mask: !0,
+                alpha_to_coverage_enabled: false,
             },
         });
 
@@ -415,6 +424,7 @@ impl State {
             camera_controller,
             instances,
             instance_buffer,
+            depth_texture,
         }
     }
 
@@ -425,6 +435,8 @@ impl State {
             self.config.height = new_size.height;
             self.surface.configure(&self.device, &self.config);
         }
+        self.depth_texture =
+            Texture::create_depth_texture(&self.device, &self.config, "depth_texture");
     }
 
     fn input(&mut self, event: &WindowEvent) -> bool {
@@ -472,7 +484,14 @@ impl State {
                         },
                     },
                 ],
-                depth_stencil_attachment: None,
+                depth_stencil_attachment: Some(wgpu::RenderPassDepthStencilAttachment {
+                    view: &self.depth_texture.view,
+                    depth_ops: Some(wgpu::Operations {
+                        load: wgpu::LoadOp::Clear(1.0),
+                        store: true,
+                    }),
+                    stencil_ops: None,
+                }),
             });
 
             render_pass.set_pipeline(&self.render_pipeline);