Added Vulkan Descriptor Sets and Samplers.

gpu/vulkan/vulkan_descriptor_set.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_SET_H_
+#define GPU_VULKAN_VULKAN_DESCRIPTOR_SET_H_
+
+#include <vulkan/vulkan.h>
+
+#include <memory>
+#include <vector>
+
+#include "base/macros.h"
+#include "gpu/vulkan/vulkan_export.h"
+
+namespace gpu {
+
+class VulkanDescriptorPool;
+class VulkanDeviceQueue;
+
+class VULKAN_EXPORT VulkanDescriptorSet {
+ public:
+  ~VulkanDescriptorSet();
+
+  bool Initialize(const std::vector<VkDescriptorSetLayoutBinding>& layout);
+  void Destroy();
+
+  void WriteToDescriptorSet(uint32_t dst_binding,
+                            uint32_t dst_array_element,
+                            uint32_t descriptor_count,
+                            VkDescriptorType descriptor_type,
+                            const VkDescriptorImageInfo* image_info,
+                            const VkDescriptorBufferInfo* buffer_info,
+                            const VkBufferView* texel_buffer_view);
+
+  void CopyFromDescriptorSet(const VulkanDescriptorSet* source_set,
+                             uint32_t src_binding,
+                             uint32_t src_array_element,
+                             uint32_t dst_binding,
+                             uint32_t dst_array_element,
+                             uint32_t descriptor_count);
+
+  VkDescriptorSet handle() const { return handle_; }
+  VkDescriptorSetLayout layout() const { return layout_; }
+
+ private:
+  friend class VulkanDescriptorPool;
+  explicit VulkanDescriptorSet(VulkanDeviceQueue* device_queue,
+                               VulkanDescriptorPool* descriptor_pool);
+
+  VulkanDeviceQueue* device_queue_ = nullptr;
+  VulkanDescriptorPool* descriptor_pool_ = nullptr;
+  VkDescriptorSet handle_ = VK_NULL_HANDLE;
+  VkDescriptorSetLayout layout_ = VK_NULL_HANDLE;
+
+  DISALLOW_COPY_AND_ASSIGN(VulkanDescriptorSet);
+};
+
+}  // namespace gpu
+
+#endif  // GPU_VULKAN_VULKAN_DESCRIPTOR_SET_H_