adding base descriptors

src/vulkan/DescriptorSetLayout.zig

@@ -0,0 +1,28 @@
+const std = @import("std");
+const vk = @import("vulkan");
+
+const VkError = @import("error_set.zig").VkError;
+const Device = @import("Device.zig");
+
+const Self = @This();
+pub const ObjectType: vk.ObjectType = .descriptor_set_layout;
+
+owner: *Device,
+bindings: []const vk.DescriptorSetLayoutBinding,
+
+vtable: *const VTable,
+
+pub const VTable = struct {
+    destroy: *const fn (*Self, std.mem.Allocator) void,
+};
+
+pub fn init(device: *Device, allocator: std.mem.Allocator, info: *const vk.DescriptorSetLayoutCreateInfo) VkError!Self {
+    return .{
+        .owner = device,
+        .bindings = allocator.dupe(info.bindings[0..info.binding_count]) catch return VkError.OutOfHostMemory,
+    };
+}
+
+pub inline fn destroy(self: *Self, allocator: std.mem.Allocator) void {
+    self.vtable.destroy(self, allocator);
+}