Added initial implementation of Vulkan Render Passes.

gpu/vulkan/vulkan_swap_chain.h

Index: gpu/vulkan/vulkan_swap_chain.h
diff --git a/gpu/vulkan/vulkan_swap_chain.h b/gpu/vulkan/vulkan_swap_chain.h
new file mode 100644
index 0000000000000000000000000000000000000000..1596f6744f9e92225232d8ba109bfa94187acccd
--- /dev/null
+++ b/gpu/vulkan/vulkan_swap_chain.h
@@ -0,0 +1,70 @@
+// 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_SWAP_CHAIN_H_
+#define GPU_VULKAN_VULKAN_SWAP_CHAIN_H_
+
+#include <vector>
+#include <vulkan/vulkan.h>
+
+#include "base/memory/scoped_ptr.h"
+#include "ui/gfx/swap_result.h"
+
+namespace gpu {
+
+class VulkanCommandBuffer;
+class VulkanCommandPool;
+
+class VulkanSwapChain {
+ public:
+  VulkanSwapChain();
+  ~VulkanSwapChain();
+
+  bool Initialize(VkSurfaceKHR surface,
+                  const VkSurfaceCapabilitiesKHR& surface_caps,
+                  const VkSurfaceFormatKHR& surface_format);
+  void Destroy();
+
+  gfx::SwapResult SwapBuffers();
+
+ private:
+  bool InitializeSwapChain(VkSurfaceKHR surface,
+                           const VkSurfaceCapabilitiesKHR& surface_caps,
+                           const VkSurfaceFormatKHR& surface_format);
+  void DestroySwapChain();
+
+  bool InitializeImageLayoutCommandBuffer();
+  void DestroyImageLayoutCommandBuffer();
+
+  bool InitializeSwapImages(const VkSurfaceCapabilitiesKHR& surface_caps,
+                            const VkSurfaceFormatKHR& surface_format);
+  void DestroySwapImages();
+
+  bool InitializeInitialBuffer();
+
+  VkSwapchainKHR swap_chain_ = VK_NULL_HANDLE;
+
+  scoped_ptr<VulkanCommandPool> command_pool_;
+  scoped_ptr<VulkanCommandBuffer> image_layout_command_buffer_;
+
+  struct ImageData {
+    ImageData();
+    ~ImageData();
+
+    VkImage image = VK_NULL_HANDLE;
+    VkImageView image_view = VK_NULL_HANDLE;
+    scoped_ptr<VulkanCommandBuffer> command_buffer;
+
+    VkSemaphore render_layout_semaphore = VK_NULL_HANDLE;
+    VkSemaphore render_semaphore = VK_NULL_HANDLE;
+    VkSemaphore present_layout_semaphore = VK_NULL_HANDLE;
+    VkSemaphore present_semaphore = VK_NULL_HANDLE;
+  };
+  std::vector<scoped_ptr<ImageData>> images_;
+  uint32_t current_image_ = 0;
+};
+
+}  // namespace gpu
+
+#endif  // GPU_VULKAN_VULKAN_SWAP_CHAIN_H_