Added Vulkan Descriptor Sets and Samplers.

gpu/vulkan/vulkan_descriptor_layout.h

+// Copyright (c) 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef GPU_VULKAN_VULKAN_DESCRIPTOR_LAYOUT_H_
+#define GPU_VULKAN_VULKAN_DESCRIPTOR_LAYOUT_H_
+
+#include <vulkan/vulkan.h>
+
+#include <memory>
+#include <vector>
+
+#include "base/macros.h"
+#include "gpu/vulkan/vulkan_export.h"
+
+namespace gpu {
+
+class VulkanDeviceQueue;
+
+class VULKAN_EXPORT VulkanDescriptorLayout {
+ public:
+  explicit VulkanDescriptorLayout(VulkanDeviceQueue* device_queue);
+  ~VulkanDescriptorLayout();
+
+  bool Initialize(const std::vector<VkDescriptorSetLayoutBinding>& layout);
+  void Destroy();
+
+  VkDescriptorSetLayout handle() const { return handle_; }
+
+ private:
+  VulkanDeviceQueue* device_queue_ = nullptr;
+  VkDescriptorSetLayout handle_ = VK_NULL_HANDLE;
+
+  DISALLOW_COPY_AND_ASSIGN(VulkanDescriptorLayout);
+};
+
+}  // namespace gpu
+
+#endif  // GPU_VULKAN_VULKAN_DESCRIPTOR_LAYOUT_H_