Added initial implementation of Vulkan Render Passes.

gpu/vulkan/vulkan_implementation.cc

 // 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.
 
 #include "gpu/vulkan/vulkan_implementation.h"
 
 #include <string>
 #include <vector>
 #include <vulkan/vulkan.h>
 
 #include "base/macros.h"
+#include "gpu/vulkan/vulkan_command_pool.h"
 
 #if defined(VK_USE_PLATFORM_XLIB_KHR)
 #include "ui/gfx/x/x11_types.h"
 #endif  // defined(VK_USE_PLATFORM_XLIB_KHR)
 
 namespace gpu {
 
 struct VulkanInstance {
-  VulkanInstance() : valid(false) {}
+  VulkanInstance() {}
 
   void Initialize() {
     valid = InitializeVulkanInstance() && InitializeVulkanDevice();
   }
 
   bool InitializeVulkanInstance() {
     VkResult status = VK_SUCCESS;
 
     VkApplicationInfo app_info = {};
     app_info.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO;
@@ skipping 27 matching lines @@
 
     uint32_t device_count = 0;
     status = vkEnumeratePhysicalDevices(vk_instance, &device_count, nullptr);
     if (VK_SUCCESS != status || device_count == 0)
       return false;
 
     std::vector<VkPhysicalDevice> devices(device_count);
     status =
         vkEnumeratePhysicalDevices(vk_instance, &device_count, devices.data());
     if (VK_SUCCESS != status) {
-      LOG(ERROR) << "vkEnumeratePhysicalDevices() failed: " << status;
+      DLOG(ERROR) << "vkEnumeratePhysicalDevices() failed: " << status;
       return false;
     }
 
 // TODO(dyen): Enable this once vkGetPhysicalDeviceXlibPresentationSupportKHR()
 // is properly supported in the driver.
 #if 0 && defined(VK_USE_PLATFORM_XLIB_KHR)
     Display* xdisplay = gfx::GetXDisplay();
     VisualID visual_id =
         XVisualIDFromVisual(DefaultVisual(xdisplay, DefaultScreen(xdisplay)));
 #endif  // defined(VK_USE_PLATFORM_XLIB_KHR)
@@ skipping 31 matching lines @@
         if (-1 != queue_index) {
           device_index = static_cast<int>(i);
           break;
         }
       }
     }
 
     if (queue_index == -1)
       return false;
 
+    vk_physical_device = devices[device_index];
+    vk_queue_index = queue_index;
+
     float queue_priority = 0.0f;
     VkDeviceQueueCreateInfo queue_create_info = {};
     queue_create_info.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
     queue_create_info.queueFamilyIndex = queue_index;
     queue_create_info.queueCount = 1;
     queue_create_info.pQueuePriorities = &queue_priority;
 
     const char* device_extensions[] = {VK_KHR_SWAPCHAIN_EXTENSION_NAME};
 
     VkDeviceCreateInfo device_create_info = {};
     device_create_info.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
     device_create_info.queueCreateInfoCount = 1;
     device_create_info.pQueueCreateInfos = &queue_create_info;
     device_create_info.enabledExtensionCount = arraysize(device_extensions);
     device_create_info.ppEnabledExtensionNames = device_extensions;
 
-    status = vkCreateDevice(devices[device_index], &device_create_info, nullptr,
+    status = vkCreateDevice(vk_physical_device, &device_create_info, nullptr,
                             &vk_device);
     if (VK_SUCCESS != status)
       return false;
 
     vkGetDeviceQueue(vk_device, queue_index, 0, &vk_queue);
 
     return true;
   }
 
-  bool valid;
+  bool valid = false;
   VkInstance vk_instance;
+  VkPhysicalDevice vk_physical_device;
   VkDevice vk_device;
   VkQueue vk_queue;
+  uint32_t vk_queue_index = 0;
 };
 
 static VulkanInstance* vulkan_instance = nullptr;
 
 bool InitializeVulkan() {
   DCHECK(!vulkan_instance);
   vulkan_instance = new VulkanInstance;
   vulkan_instance->Initialize();
   return vulkan_instance->valid;
 }
 
 VkInstance GetVulkanInstance() {
   DCHECK(vulkan_instance);
   DCHECK(vulkan_instance->valid);
   return vulkan_instance->vk_instance;
 }
 
+VkPhysicalDevice GetVulkanPhysicalDevice() {
+  DCHECK(vulkan_instance);
+  DCHECK(vulkan_instance->valid);
+  return vulkan_instance->vk_physical_device;
+}
+
 VkDevice GetVulkanDevice() {
   DCHECK(vulkan_instance);
   DCHECK(vulkan_instance->valid);
   return vulkan_instance->vk_device;
 }
 
 VkQueue GetVulkanQueue() {
   DCHECK(vulkan_instance);
   DCHECK(vulkan_instance->valid);
   return vulkan_instance->vk_queue;
 }
 
+scoped_ptr<VulkanCommandPool> CreateCommandPool() {
+  DCHECK(vulkan_instance);
+  DCHECK(vulkan_instance->valid);
+
+  scoped_ptr<VulkanCommandPool> command_pool(new VulkanCommandPool(
+      vulkan_instance->vk_device, vulkan_instance->vk_queue_index));
+  if (!command_pool->Initialize())
+    return nullptr;
+
+  return command_pool;
+}
+
 }  // namespace gpu