--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/zamikongine/descriptor.nim	Sat Jan 14 14:08:45 2023 +0700
@@ -0,0 +1,39 @@
+import ./vulkan
+import ./vulkan_helpers
+import ./math/vector
+import ./math/matrix
+import ./buffer
+
+type
+  DescriptorType = SomeNumber|Vec|Mat
+  Descriptor*[T:DescriptorType] = object
+    value*: T
+
+proc createUniformDescriptorLayout*(device: VkDevice, shaderStage: VkShaderStageFlags, binding: uint32): VkDescriptorSetLayout =
+  var
+    layoutbinding = VkDescriptorSetLayoutBinding(
+      binding: binding,
+      descriptorType: VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
+      descriptorCount: 1,
+      stageFlags: shaderStage,
+      pImmutableSamplers: nil,
+    )
+    layoutInfo = VkDescriptorSetLayoutCreateInfo(
+      sType: VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO,
+      bindingCount: 1,
+      pBindings: addr(layoutbinding)
+    )
+  checkVkResult device.vkCreateDescriptorSetLayout(addr(layoutInfo), nil, addr(result))
+
+proc createUniformBuffers*[nBuffers: static int, T](device: VkDevice, physicalDevice: VkPhysicalDevice): array[nBuffers, Buffer] =
+  let size = sizeof(T)
+  for i in 0 ..< nBuffers:
+    var buffer = InitBuffer(
+      device,
+      physicalDevice,
+      uint64(size),
+      {UniformBuffer},
+      {VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, VK_MEMORY_PROPERTY_HOST_COHERENT_BIT},
+      persistentMapping=true,
+    )
+    result[i] = buffer