render: add depth buffer

src/game/assets/square.rs

@@ -17,7 +17,8 @@ use vulkano::{
         graphics::{
             GraphicsPipelineCreateInfo,
             color_blend::{ColorBlendAttachmentState, ColorBlendState},
-            input_assembly::{InputAssemblyState, PrimitiveTopology},
+            depth_stencil::{DepthState, DepthStencilState},
+            input_assembly::InputAssemblyState,
             multisample::MultisampleState,
             rasterization::RasterizationState,
             subpass::PipelineRenderingCreateInfo,
@@ -84,6 +85,7 @@ impl Square {
         device: &Arc<Device>,
         memory_allocator: &Arc<StandardMemoryAllocator>,
         swapchain_format: Format,
+        depth_format: Format,
     ) -> Result<Self, Box<dyn Error>> {
         let vertex_buffer = Buffer::from_iter(
             memory_allocator.clone(),
@@ -173,6 +175,7 @@ impl Square {
 
         let subpass = PipelineRenderingCreateInfo {
             color_attachment_formats: vec![Some(swapchain_format)],
+            depth_attachment_format: Some(depth_format),
             ..Default::default()
         };
 
@@ -190,6 +193,10 @@ impl Square {
                     subpass.color_attachment_formats.len() as u32,
                     ColorBlendAttachmentState::default(),
                 )),
+                depth_stencil_state: Some(DepthStencilState {
+                    depth: Some(DepthState::simple()),
+                    ..Default::default()
+                }),
                 dynamic_state: [DynamicState::Viewport].into_iter().collect(),
                 subpass: Some(subpass.into()),
                 ..GraphicsPipelineCreateInfo::layout(layout)