Add labels to GPU objects

src/renderer.zig

@@ -37,12 +37,16 @@ primitive_data: []PrimitiveData,
 object_data: []ObjectData,
 
 pub fn init(app: *App) !*Renderer {
+    // A string buffer used to format objects' labels.
+    var label_buffer: [256]u8 = undefined;
+
     const shader_module = core.device.createShaderModuleWGSL("shader.wgsl", @embedFile("shader.wgsl"));
     defer shader_module.release();
 
     // Define layouts for our bind groups and pipeline.
     // This helps find errors with missing or mismatching shader properties.
     var camera_bind_group_layout = core.device.createBindGroupLayout(&gpu.BindGroupLayout.Descriptor.init(.{
+        .label = "Camera Bind Group Layout",
         .entries = &.{
             gpu.BindGroupLayout.Entry.buffer(0, .{ .vertex = true }, .uniform, false, 0),
         },
@@ -50,6 +54,7 @@ pub fn init(app: *App) !*Renderer {
     defer camera_bind_group_layout.release();
 
     var model_bind_group_layout = core.device.createBindGroupLayout(&gpu.BindGroupLayout.Descriptor.init(.{
+        .label = "Model Bind Group Layout",
         .entries = &.{
             gpu.BindGroupLayout.Entry.buffer(0, .{ .vertex = true }, .uniform, false, 0),
             gpu.BindGroupLayout.Entry.buffer(1, .{ .vertex = true }, .uniform, false, 0),
@@ -104,6 +109,7 @@ pub fn init(app: *App) !*Renderer {
     // "Bind groups" are used to associate data from buffers with shader parameters.
     // So for example the `camera_bind_group` is accessible via `@group(0)` in our shader.
     const camera_bind_group = core.device.createBindGroup(&gpu.BindGroup.Descriptor.init(.{
+        .label = "Camera Bind Group",
         .layout = camera_bind_group_layout,
         .entries = &.{
             gpu.BindGroup.Entry.buffer(0, view_proj_buffer, 0, @sizeOf(zm.Mat)),
@@ -160,7 +166,9 @@ pub fn init(app: *App) !*Renderer {
         const model_color_buffer = createAndWriteBuffer([3]f32, &.{model_color}, .{ .copy_dst = true, .uniform = true });
         defer model_color_buffer.release();
 
+        const model_bind_group_label = try std.fmt.bufPrintZ(&label_buffer, "Model Bind Group {d}", .{i});
         const model_bind_group = core.device.createBindGroup(&gpu.BindGroup.Descriptor.init(.{
+            .label = model_bind_group_label,
             .layout = model_bind_group_layout,
             .entries = &.{
                 gpu.BindGroup.Entry.buffer(0, model_matrix_buffer, 0, @sizeOf(zm.Mat)),
@@ -319,6 +327,7 @@ pub fn recreateDepthTexture(self: *Renderer) void {
     if (self.depth_texture_view) |v| v.release();
 
     self.depth_texture = core.device.createTexture(&.{
+        .label = "Depth Texture",
         .usage = .{ .render_attachment = true },
         .size = .{ .width = core.descriptor.width, .height = core.descriptor.height },
         .format = .depth24_plus,