src/lib/vulkan/tests/test_compact_image.cc - fuchsia - Git at Google

 // Copyright 2020 The Fuchsia 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 <gtest/gtest.h>
 #include <vulkan/vulkan.h>

 static const char* kLayerName = "VK_LAYER_FUCHSIA_compact_image";

 // Note: the loader returns results based on the layer's manifest file, not the
 // implementation of the vkEnumerateInstanceExtensionProperties and
 // vkEnumerateDeviceExtensionProperties apis inside the layer.

 static const std::vector<const char*> kLayers = {kLayerName};

 static const std::vector<const char*> kExpectedDeviceExtensions = {
     VK_FUCHSIA_COMPACT_IMAGE_EXTENSION_NAME};

 TEST(CompactImage, LayerApiVersion) {
   uint32_t prop_count = 0;
   EXPECT_EQ(VK_SUCCESS, vkEnumerateInstanceLayerProperties(&prop_count, nullptr));
   EXPECT_GE(prop_count, kLayers.size());

   std::vector<VkLayerProperties> props(prop_count);
   EXPECT_EQ(VK_SUCCESS, vkEnumerateInstanceLayerProperties(&prop_count, props.data()));
   bool layer_found = false;
   const uint32_t kExpectedVersion = VK_MAKE_VERSION(1, 1, VK_HEADER_VERSION);
   for (uint32_t i = 0; i < prop_count; i++) {
     if (strcmp(props[i].layerName, kLayerName) == 0) {
       EXPECT_GE(kExpectedVersion, props[i].specVersion);
       layer_found = true;
       break;
     }
   }
   EXPECT_TRUE(layer_found);
 }

 TEST(CompactImage, DeviceExtensions) {
   VkInstanceCreateInfo instance_info = {
       .sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO,
       .pNext = nullptr,
       .pApplicationInfo = nullptr,
       .enabledLayerCount = static_cast<uint32_t>(kLayers.size()),
       .ppEnabledLayerNames = kLayers.data(),
       .enabledExtensionCount = 0,
       .ppEnabledExtensionNames = nullptr,
   };
   VkInstance instance;

   ASSERT_EQ(VK_SUCCESS, vkCreateInstance(&instance_info, nullptr, &instance));

   uint32_t gpu_count;
   ASSERT_EQ(VK_SUCCESS, vkEnumeratePhysicalDevices(instance, &gpu_count, nullptr));
   EXPECT_GE(gpu_count, 1u);

   std::vector<VkPhysicalDevice> physical_devices(gpu_count);
   ASSERT_EQ(VK_SUCCESS, vkEnumeratePhysicalDevices(instance, &gpu_count, physical_devices.data()));

   uint32_t prop_count;
   EXPECT_EQ(VK_SUCCESS, vkEnumerateDeviceExtensionProperties(physical_devices[0], kLayerName,
                                                              &prop_count, nullptr));
   EXPECT_EQ(prop_count, kExpectedDeviceExtensions.size());

   std::vector<VkExtensionProperties> props(prop_count);
   EXPECT_EQ(VK_SUCCESS, vkEnumerateDeviceExtensionProperties(physical_devices[0], kLayerName,
                                                              &prop_count, props.data()));
   for (uint32_t i = 0; i < prop_count; i++) {
     EXPECT_STREQ(kExpectedDeviceExtensions[i], props[i].extensionName);
   }

   float queue_priorities[1] = {0.0};
   VkDeviceQueueCreateInfo queue_create_info = {
       .sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO,
       .pNext = nullptr,
       .flags = 0,
       .queueFamilyIndex = 0,
       .queueCount = 1,
       .pQueuePriorities = queue_priorities,
   };
   VkDeviceCreateInfo device_create_info = {
       .sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO,
       .pNext = nullptr,
       .queueCreateInfoCount = 1,
       .pQueueCreateInfos = &queue_create_info,
       .enabledLayerCount = 0,
       .ppEnabledLayerNames = nullptr,
       .enabledExtensionCount = static_cast<uint32_t>(kExpectedDeviceExtensions.size()),
       .ppEnabledExtensionNames = kExpectedDeviceExtensions.data(),
       .pEnabledFeatures = nullptr,
   };
   VkDevice device;
   EXPECT_EQ(VK_SUCCESS, vkCreateDevice(physical_devices[0], &device_create_info, nullptr, &device));
 }

 TEST(CompactImage, TrimCompactImageDeviceMemoryFUCHSIA) {
   VkInstanceCreateInfo instance_info = {
       .sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO,
       .pNext = nullptr,
       .pApplicationInfo = nullptr,
       .enabledLayerCount = static_cast<uint32_t>(kLayers.size()),
       .ppEnabledLayerNames = kLayers.data(),
       .enabledExtensionCount = 0,
       .ppEnabledExtensionNames = nullptr,
   };
   VkInstance instance;

   ASSERT_EQ(VK_SUCCESS, vkCreateInstance(&instance_info, nullptr, &instance));

   uint32_t gpu_count;
   ASSERT_EQ(VK_SUCCESS, vkEnumeratePhysicalDevices(instance, &gpu_count, nullptr));
   EXPECT_GE(gpu_count, 1u);

   std::vector<VkPhysicalDevice> physical_devices(gpu_count);
   ASSERT_EQ(VK_SUCCESS, vkEnumeratePhysicalDevices(instance, &gpu_count, physical_devices.data()));

   VkImageFormatProperties image_format_properties;
   VkResult result = vkGetPhysicalDeviceImageFormatProperties(
       physical_devices[0], VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_TYPE_2D, VK_IMAGE_TILING_OPTIMAL,
       VK_IMAGE_USAGE_TRANSFER_SRC_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT,
       VK_IMAGE_CREATE_COMPACT_BIT_FUCHSIA, &image_format_properties);
   // End test if compact images are not supported by physical device.
   if (result == VK_ERROR_FORMAT_NOT_SUPPORTED) {
     return;
   }

   float queue_priorities[1] = {0.0};
   uint32_t queue_family_index = 0;
   VkDeviceQueueCreateInfo queue_create_info = {
       .sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO,
       .pNext = nullptr,
       .flags = 0,
       .queueFamilyIndex = queue_family_index,
       .queueCount = 1,
       .pQueuePriorities = queue_priorities,
   };
   VkDeviceCreateInfo device_create_info = {
       .sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO,
       .pNext = nullptr,
       .queueCreateInfoCount = 1,
       .pQueueCreateInfos = &queue_create_info,
       .enabledLayerCount = 0,
       .ppEnabledLayerNames = nullptr,
       .enabledExtensionCount = static_cast<uint32_t>(kExpectedDeviceExtensions.size()),
       .ppEnabledExtensionNames = kExpectedDeviceExtensions.data(),
       .pEnabledFeatures = nullptr,
   };
   VkDevice device;
   EXPECT_EQ(VK_SUCCESS, vkCreateDevice(physical_devices[0], &device_create_info, nullptr, &device));

   PFN_vkTrimCompactImageDeviceMemoryFUCHSIA f_vkTrimCompactImageDeviceMemoryFUCHSIA =
       reinterpret_cast<PFN_vkTrimCompactImageDeviceMemoryFUCHSIA>(
           vkGetDeviceProcAddr(device, "vkTrimCompactImageDeviceMemoryFUCHSIA"));
   EXPECT_TRUE(f_vkTrimCompactImageDeviceMemoryFUCHSIA);

   uint32_t width = 600;
   uint32_t height = 1024;
   VkImageCreateInfo image_create_info = {
       .sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO,
       .pNext = nullptr,
       .flags = VK_IMAGE_CREATE_COMPACT_BIT_FUCHSIA,
       .imageType = VK_IMAGE_TYPE_2D,
       .format = VK_FORMAT_R8G8B8A8_UNORM,
       .extent = VkExtent3D{width, height, 1},
       .mipLevels = 1,
       .arrayLayers = 1,
       .samples = VK_SAMPLE_COUNT_1_BIT,
       .tiling = VK_IMAGE_TILING_OPTIMAL,
       .usage = VK_IMAGE_USAGE_TRANSFER_SRC_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT,
       .sharingMode = VK_SHARING_MODE_EXCLUSIVE,
       .initialLayout = VK_IMAGE_LAYOUT_UNDEFINED,
   };
   VkImage image;
   EXPECT_EQ(VK_SUCCESS, vkCreateImage(device, &image_create_info, nullptr, &image));

   VkImageMemoryRequirementsInfo2 memory_requirements_info = {
       .sType = VK_STRUCTURE_TYPE_BUFFER_MEMORY_REQUIREMENTS_INFO_2,
       .image = image,
   };
   VkMemoryDedicatedRequirements memory_dedicated_requirements = {
       .sType = VK_STRUCTURE_TYPE_MEMORY_DEDICATED_REQUIREMENTS,
       .pNext = nullptr,
   };
   VkMemoryRequirements2 memory_requirements = {
       .sType = VK_STRUCTURE_TYPE_MEMORY_REQUIREMENTS_2,
       .pNext = &memory_dedicated_requirements,
   };
   vkGetImageMemoryRequirements2(device, &memory_requirements_info, &memory_requirements);
   EXPECT_TRUE(memory_dedicated_requirements.prefersDedicatedAllocation);

   VkPhysicalDeviceMemoryProperties memory_properties;
   vkGetPhysicalDeviceMemoryProperties(physical_devices[0], &memory_properties);

   uint32_t image_memory_type_index = VK_MAX_MEMORY_TYPES;
   for (uint32_t i = 0; i < memory_properties.memoryTypeCount; i++) {
     if (memory_requirements.memoryRequirements.memoryTypeBits & (1 << i)) {
       image_memory_type_index = i;
       break;
     }
   }
   EXPECT_TRUE(image_memory_type_index != VK_MAX_MEMORY_TYPES);

   VkMemoryDedicatedAllocateInfo image_memory_dedicated_allocate_info = {
       .sType = VK_STRUCTURE_TYPE_MEMORY_DEDICATED_ALLOCATE_INFO,
       .pNext = nullptr,
       .image = image,
       .buffer = VK_NULL_HANDLE,
   };
   VkMemoryAllocateInfo image_memory_allocate_info = {
       .sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,
       .pNext = &image_memory_dedicated_allocate_info,
       .allocationSize = memory_requirements.memoryRequirements.size,
       .memoryTypeIndex = image_memory_type_index,
   };

   VkDeviceMemory image_memory;
   EXPECT_EQ(VK_SUCCESS, vkAllocateMemory(device, &image_memory_allocate_info, 0, &image_memory));
   EXPECT_EQ(VK_SUCCESS, vkBindImageMemory(device, image, image_memory, 0));

   // Buffer is used for both image upload and results.
   uint32_t buffer_size = width * height * 4;
   VkBufferCreateInfo buffer_create_info = {
       .sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO,
       .pNext = nullptr,
       .flags = 0,
       .size = buffer_size,
       .usage = VK_BUFFER_USAGE_TRANSFER_DST_BIT,
       .sharingMode = VK_SHARING_MODE_EXCLUSIVE,
       .queueFamilyIndexCount = 0,
       .pQueueFamilyIndices = nullptr,
   };

   VkBuffer buffer;
   EXPECT_EQ(VK_SUCCESS, vkCreateBuffer(device, &buffer_create_info, 0, &buffer));

   uint32_t buffer_memory_type_index = VK_MAX_MEMORY_TYPES;
   for (uint32_t i = 0; i < memory_properties.memoryTypeCount; i++) {
     VkMemoryPropertyFlags required_properties =
         VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT;
     if (required_properties & memory_properties.memoryTypes[i].propertyFlags) {
       buffer_memory_type_index = i;
       break;
     }
   }
   EXPECT_TRUE(buffer_memory_type_index != VK_MAX_MEMORY_TYPES);

   VkMemoryAllocateInfo buffer_memory_allocate_info = {
       .sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,
       .pNext = nullptr,
       .allocationSize = buffer_size,
       .memoryTypeIndex = buffer_memory_type_index,
   };

   VkDeviceMemory buffer_memory;
   EXPECT_EQ(VK_SUCCESS, vkAllocateMemory(device, &buffer_memory_allocate_info, 0, &buffer_memory));
   EXPECT_EQ(VK_SUCCESS, vkBindBufferMemory(device, buffer, buffer_memory, 0));

   void* pData = nullptr;
   EXPECT_EQ(VK_SUCCESS, vkMapMemory(device, buffer_memory, 0, buffer_size, 0, &pData));

   VkCommandPoolCreateInfo command_pool_create_info = {
       .sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO,
       .pNext = nullptr,
       .flags = 0,
       .queueFamilyIndex = queue_family_index,
   };

   VkCommandPool command_pool;
   EXPECT_EQ(VK_SUCCESS, vkCreateCommandPool(device, &command_pool_create_info, 0, &command_pool));

   VkCommandBufferAllocateInfo command_buffer_allocate_info = {
       .sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO,
       .pNext = nullptr,
       .commandPool = command_pool,
       .level = VK_COMMAND_BUFFER_LEVEL_PRIMARY,
       .commandBufferCount = 1,
   };

   VkCommandBuffer command_buffer;
   EXPECT_EQ(VK_SUCCESS,
             vkAllocateCommandBuffers(device, &command_buffer_allocate_info, &command_buffer));

   VkCommandBufferBeginInfo command_buffer_begin_info = {
       .sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO,
       .pNext = nullptr,
       .flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT,
       .pInheritanceInfo = nullptr,
   };
   EXPECT_EQ(VK_SUCCESS, vkBeginCommandBuffer(command_buffer, &command_buffer_begin_info));

   VkImageSubresourceRange subresource_range = {
       .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
       .baseMipLevel = 0,
       .levelCount = 1,
       .baseArrayLayer = 0,
       .layerCount = 1,
   };
   VkImageMemoryBarrier undefined_transfer_dst_image_memory_barrier = {
       .sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,
       .pNext = nullptr,
       .srcAccessMask = 0,
       .dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT,
       .oldLayout = VK_IMAGE_LAYOUT_UNDEFINED,
       .newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
       .image = image,
       .subresourceRange = subresource_range,
   };
   vkCmdPipelineBarrier(command_buffer, VK_PIPELINE_STAGE_TRANSFER_BIT,
                        VK_PIPELINE_STAGE_TRANSFER_BIT, VK_DEPENDENCY_BY_REGION_BIT, 0, nullptr, 0,
                        nullptr, 1, &undefined_transfer_dst_image_memory_barrier);

   // Linear gradient.
   for (uint32_t y = 0; y < height; ++y) {
     for (uint32_t x = 0; x < width; ++x) {
       reinterpret_cast<uint32_t*>(pData)[y * width + x] = 0xff0000ff | (x << 8);
     }
   }

   VkImageSubresourceLayers subresource_layers = {
       .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
       .mipLevel = 0,
       .baseArrayLayer = 0,
       .layerCount = 1,
   };
   VkBufferImageCopy region = {
       .bufferOffset = 0,
       .bufferRowLength = width,
       .bufferImageHeight = height,
       .imageSubresource = subresource_layers,
       .imageOffset = VkOffset3D{0, 0, 0},
       .imageExtent = VkExtent3D{width, height, 1},
   };
   vkCmdCopyBufferToImage(command_buffer, buffer, image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1,
                          &region);

   VkImageMemoryBarrier transfer_dst_transfer_src_image_memory_barrier = {
       .sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,
       .pNext = nullptr,
       .srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT,
       .dstAccessMask = VK_ACCESS_TRANSFER_READ_BIT,
       .oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
       .newLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL,
       .image = image,
       .subresourceRange = subresource_range,
   };
   vkCmdPipelineBarrier(command_buffer, VK_PIPELINE_STAGE_TRANSFER_BIT,
                        VK_PIPELINE_STAGE_TRANSFER_BIT, VK_DEPENDENCY_BY_REGION_BIT, 0, nullptr, 0,
                        nullptr, 1, &transfer_dst_transfer_src_image_memory_barrier);

   EXPECT_EQ(VK_SUCCESS, vkEndCommandBuffer(command_buffer));

   VkQueue queue;
   vkGetDeviceQueue(device, queue_family_index, 0, &queue);

   VkSubmitInfo submit_info = {
       .sType = VK_STRUCTURE_TYPE_SUBMIT_INFO,
       .pNext = nullptr,
       .waitSemaphoreCount = 0,
       .pWaitSemaphores = nullptr,
       .pWaitDstStageMask = nullptr,
       .commandBufferCount = 1,
       .pCommandBuffers = &command_buffer,
       .signalSemaphoreCount = 0,
       .pSignalSemaphores = nullptr,
   };
   EXPECT_EQ(VK_SUCCESS, vkQueueSubmit(queue, 1, &submit_info, 0));
   EXPECT_EQ(VK_SUCCESS, vkQueueWaitIdle(queue));

   // Trim device memory to compact size. This will reduce the memory
   // committment to what is required for the current image layout.
   f_vkTrimCompactImageDeviceMemoryFUCHSIA(device, image, image_memory, 0);
   // TODO(reveman): Querying commitment for memory when
   // VK_MEMORY_PROPERTY_LAZILY_ALLOCATED_BIT is supported.
 }
	// Copyright 2020 The Fuchsia 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 <gtest/gtest.h>
	#include <vulkan/vulkan.h>

	static const char* kLayerName = "VK_LAYER_FUCHSIA_compact_image";

	// Note: the loader returns results based on the layer's manifest file, not the
	// implementation of the vkEnumerateInstanceExtensionProperties and
	// vkEnumerateDeviceExtensionProperties apis inside the layer.

	static const std::vector<const char*> kLayers = {kLayerName};

	static const std::vector<const char*> kExpectedDeviceExtensions = {
	VK_FUCHSIA_COMPACT_IMAGE_EXTENSION_NAME};

	TEST(CompactImage, LayerApiVersion) {
	uint32_t prop_count = 0;
	EXPECT_EQ(VK_SUCCESS, vkEnumerateInstanceLayerProperties(&prop_count, nullptr));
	EXPECT_GE(prop_count, kLayers.size());

	std::vector<VkLayerProperties> props(prop_count);
	EXPECT_EQ(VK_SUCCESS, vkEnumerateInstanceLayerProperties(&prop_count, props.data()));
	bool layer_found = false;
	const uint32_t kExpectedVersion = VK_MAKE_VERSION(1, 1, VK_HEADER_VERSION);
	for (uint32_t i = 0; i < prop_count; i++) {
	if (strcmp(props[i].layerName, kLayerName) == 0) {
	EXPECT_GE(kExpectedVersion, props[i].specVersion);
	layer_found = true;
	break;
	}
	}
	EXPECT_TRUE(layer_found);
	}

	TEST(CompactImage, DeviceExtensions) {
	VkInstanceCreateInfo instance_info = {
	.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO,
	.pNext = nullptr,
	.pApplicationInfo = nullptr,
	.enabledLayerCount = static_cast<uint32_t>(kLayers.size()),
	.ppEnabledLayerNames = kLayers.data(),
	.enabledExtensionCount = 0,
	.ppEnabledExtensionNames = nullptr,
	};
	VkInstance instance;

	ASSERT_EQ(VK_SUCCESS, vkCreateInstance(&instance_info, nullptr, &instance));

	uint32_t gpu_count;
	ASSERT_EQ(VK_SUCCESS, vkEnumeratePhysicalDevices(instance, &gpu_count, nullptr));
	EXPECT_GE(gpu_count, 1u);

	std::vector<VkPhysicalDevice> physical_devices(gpu_count);
	ASSERT_EQ(VK_SUCCESS, vkEnumeratePhysicalDevices(instance, &gpu_count, physical_devices.data()));

	uint32_t prop_count;
	EXPECT_EQ(VK_SUCCESS, vkEnumerateDeviceExtensionProperties(physical_devices[0], kLayerName,
	&prop_count, nullptr));
	EXPECT_EQ(prop_count, kExpectedDeviceExtensions.size());

	std::vector<VkExtensionProperties> props(prop_count);
	EXPECT_EQ(VK_SUCCESS, vkEnumerateDeviceExtensionProperties(physical_devices[0], kLayerName,
	&prop_count, props.data()));
	for (uint32_t i = 0; i < prop_count; i++) {
	EXPECT_STREQ(kExpectedDeviceExtensions[i], props[i].extensionName);
	}

	float queue_priorities[1] = {0.0};
	VkDeviceQueueCreateInfo queue_create_info = {
	.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO,
	.pNext = nullptr,
	.flags = 0,
	.queueFamilyIndex = 0,
	.queueCount = 1,
	.pQueuePriorities = queue_priorities,
	};
	VkDeviceCreateInfo device_create_info = {
	.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO,
	.pNext = nullptr,
	.queueCreateInfoCount = 1,
	.pQueueCreateInfos = &queue_create_info,
	.enabledLayerCount = 0,
	.ppEnabledLayerNames = nullptr,
	.enabledExtensionCount = static_cast<uint32_t>(kExpectedDeviceExtensions.size()),
	.ppEnabledExtensionNames = kExpectedDeviceExtensions.data(),
	.pEnabledFeatures = nullptr,
	};
	VkDevice device;
	EXPECT_EQ(VK_SUCCESS, vkCreateDevice(physical_devices[0], &device_create_info, nullptr, &device));
	}

	TEST(CompactImage, TrimCompactImageDeviceMemoryFUCHSIA) {
	VkInstanceCreateInfo instance_info = {
	.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO,
	.pNext = nullptr,
	.pApplicationInfo = nullptr,
	.enabledLayerCount = static_cast<uint32_t>(kLayers.size()),
	.ppEnabledLayerNames = kLayers.data(),
	.enabledExtensionCount = 0,
	.ppEnabledExtensionNames = nullptr,
	};
	VkInstance instance;

	ASSERT_EQ(VK_SUCCESS, vkCreateInstance(&instance_info, nullptr, &instance));

	uint32_t gpu_count;
	ASSERT_EQ(VK_SUCCESS, vkEnumeratePhysicalDevices(instance, &gpu_count, nullptr));
	EXPECT_GE(gpu_count, 1u);

	std::vector<VkPhysicalDevice> physical_devices(gpu_count);
	ASSERT_EQ(VK_SUCCESS, vkEnumeratePhysicalDevices(instance, &gpu_count, physical_devices.data()));

	VkImageFormatProperties image_format_properties;
	VkResult result = vkGetPhysicalDeviceImageFormatProperties(
	physical_devices[0], VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_TYPE_2D, VK_IMAGE_TILING_OPTIMAL,
	VK_IMAGE_USAGE_TRANSFER_SRC_BIT \| VK_IMAGE_USAGE_TRANSFER_DST_BIT,
	VK_IMAGE_CREATE_COMPACT_BIT_FUCHSIA, &image_format_properties);
	// End test if compact images are not supported by physical device.
	if (result == VK_ERROR_FORMAT_NOT_SUPPORTED) {
	return;
	}

	float queue_priorities[1] = {0.0};
	uint32_t queue_family_index = 0;
	VkDeviceQueueCreateInfo queue_create_info = {
	.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO,
	.pNext = nullptr,
	.flags = 0,
	.queueFamilyIndex = queue_family_index,
	.queueCount = 1,
	.pQueuePriorities = queue_priorities,
	};
	VkDeviceCreateInfo device_create_info = {
	.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO,
	.pNext = nullptr,
	.queueCreateInfoCount = 1,
	.pQueueCreateInfos = &queue_create_info,
	.enabledLayerCount = 0,
	.ppEnabledLayerNames = nullptr,
	.enabledExtensionCount = static_cast<uint32_t>(kExpectedDeviceExtensions.size()),
	.ppEnabledExtensionNames = kExpectedDeviceExtensions.data(),
	.pEnabledFeatures = nullptr,
	};
	VkDevice device;
	EXPECT_EQ(VK_SUCCESS, vkCreateDevice(physical_devices[0], &device_create_info, nullptr, &device));

	PFN_vkTrimCompactImageDeviceMemoryFUCHSIA f_vkTrimCompactImageDeviceMemoryFUCHSIA =
	reinterpret_cast<PFN_vkTrimCompactImageDeviceMemoryFUCHSIA>(
	vkGetDeviceProcAddr(device, "vkTrimCompactImageDeviceMemoryFUCHSIA"));
	EXPECT_TRUE(f_vkTrimCompactImageDeviceMemoryFUCHSIA);

	uint32_t width = 600;
	uint32_t height = 1024;
	VkImageCreateInfo image_create_info = {
	.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO,
	.pNext = nullptr,
	.flags = VK_IMAGE_CREATE_COMPACT_BIT_FUCHSIA,
	.imageType = VK_IMAGE_TYPE_2D,
	.format = VK_FORMAT_R8G8B8A8_UNORM,
	.extent = VkExtent3D{width, height, 1},
	.mipLevels = 1,
	.arrayLayers = 1,
	.samples = VK_SAMPLE_COUNT_1_BIT,
	.tiling = VK_IMAGE_TILING_OPTIMAL,
	.usage = VK_IMAGE_USAGE_TRANSFER_SRC_BIT \| VK_IMAGE_USAGE_TRANSFER_DST_BIT,
	.sharingMode = VK_SHARING_MODE_EXCLUSIVE,
	.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED,
	};
	VkImage image;
	EXPECT_EQ(VK_SUCCESS, vkCreateImage(device, &image_create_info, nullptr, &image));

	VkImageMemoryRequirementsInfo2 memory_requirements_info = {
	.sType = VK_STRUCTURE_TYPE_BUFFER_MEMORY_REQUIREMENTS_INFO_2,
	.image = image,
	};
	VkMemoryDedicatedRequirements memory_dedicated_requirements = {
	.sType = VK_STRUCTURE_TYPE_MEMORY_DEDICATED_REQUIREMENTS,
	.pNext = nullptr,
	};
	VkMemoryRequirements2 memory_requirements = {
	.sType = VK_STRUCTURE_TYPE_MEMORY_REQUIREMENTS_2,
	.pNext = &memory_dedicated_requirements,
	};
	vkGetImageMemoryRequirements2(device, &memory_requirements_info, &memory_requirements);
	EXPECT_TRUE(memory_dedicated_requirements.prefersDedicatedAllocation);

	VkPhysicalDeviceMemoryProperties memory_properties;
	vkGetPhysicalDeviceMemoryProperties(physical_devices[0], &memory_properties);

	uint32_t image_memory_type_index = VK_MAX_MEMORY_TYPES;
	for (uint32_t i = 0; i < memory_properties.memoryTypeCount; i++) {
	if (memory_requirements.memoryRequirements.memoryTypeBits & (1 << i)) {
	image_memory_type_index = i;
	break;
	}
	}
	EXPECT_TRUE(image_memory_type_index != VK_MAX_MEMORY_TYPES);

	VkMemoryDedicatedAllocateInfo image_memory_dedicated_allocate_info = {
	.sType = VK_STRUCTURE_TYPE_MEMORY_DEDICATED_ALLOCATE_INFO,
	.pNext = nullptr,
	.image = image,
	.buffer = VK_NULL_HANDLE,
	};
	VkMemoryAllocateInfo image_memory_allocate_info = {
	.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,
	.pNext = &image_memory_dedicated_allocate_info,
	.allocationSize = memory_requirements.memoryRequirements.size,
	.memoryTypeIndex = image_memory_type_index,
	};

	VkDeviceMemory image_memory;
	EXPECT_EQ(VK_SUCCESS, vkAllocateMemory(device, &image_memory_allocate_info, 0, &image_memory));
	EXPECT_EQ(VK_SUCCESS, vkBindImageMemory(device, image, image_memory, 0));

	// Buffer is used for both image upload and results.
	uint32_t buffer_size = width * height * 4;
	VkBufferCreateInfo buffer_create_info = {
	.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO,
	.pNext = nullptr,
	.flags = 0,
	.size = buffer_size,
	.usage = VK_BUFFER_USAGE_TRANSFER_DST_BIT,
	.sharingMode = VK_SHARING_MODE_EXCLUSIVE,
	.queueFamilyIndexCount = 0,
	.pQueueFamilyIndices = nullptr,
	};

	VkBuffer buffer;
	EXPECT_EQ(VK_SUCCESS, vkCreateBuffer(device, &buffer_create_info, 0, &buffer));

	uint32_t buffer_memory_type_index = VK_MAX_MEMORY_TYPES;
	for (uint32_t i = 0; i < memory_properties.memoryTypeCount; i++) {
	VkMemoryPropertyFlags required_properties =
	VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT \| VK_MEMORY_PROPERTY_HOST_COHERENT_BIT;
	if (required_properties & memory_properties.memoryTypes[i].propertyFlags) {
	buffer_memory_type_index = i;
	break;
	}
	}
	EXPECT_TRUE(buffer_memory_type_index != VK_MAX_MEMORY_TYPES);

	VkMemoryAllocateInfo buffer_memory_allocate_info = {
	.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,
	.pNext = nullptr,
	.allocationSize = buffer_size,
	.memoryTypeIndex = buffer_memory_type_index,
	};

	VkDeviceMemory buffer_memory;
	EXPECT_EQ(VK_SUCCESS, vkAllocateMemory(device, &buffer_memory_allocate_info, 0, &buffer_memory));
	EXPECT_EQ(VK_SUCCESS, vkBindBufferMemory(device, buffer, buffer_memory, 0));

	void* pData = nullptr;
	EXPECT_EQ(VK_SUCCESS, vkMapMemory(device, buffer_memory, 0, buffer_size, 0, &pData));

	VkCommandPoolCreateInfo command_pool_create_info = {
	.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO,
	.pNext = nullptr,
	.flags = 0,
	.queueFamilyIndex = queue_family_index,
	};

	VkCommandPool command_pool;
	EXPECT_EQ(VK_SUCCESS, vkCreateCommandPool(device, &command_pool_create_info, 0, &command_pool));

	VkCommandBufferAllocateInfo command_buffer_allocate_info = {
	.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO,
	.pNext = nullptr,
	.commandPool = command_pool,
	.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY,
	.commandBufferCount = 1,
	};

	VkCommandBuffer command_buffer;
	EXPECT_EQ(VK_SUCCESS,
	vkAllocateCommandBuffers(device, &command_buffer_allocate_info, &command_buffer));

	VkCommandBufferBeginInfo command_buffer_begin_info = {
	.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO,
	.pNext = nullptr,
	.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT,
	.pInheritanceInfo = nullptr,
	};
	EXPECT_EQ(VK_SUCCESS, vkBeginCommandBuffer(command_buffer, &command_buffer_begin_info));

	VkImageSubresourceRange subresource_range = {
	.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
	.baseMipLevel = 0,
	.levelCount = 1,
	.baseArrayLayer = 0,
	.layerCount = 1,
	};
	VkImageMemoryBarrier undefined_transfer_dst_image_memory_barrier = {
	.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,
	.pNext = nullptr,
	.srcAccessMask = 0,
	.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT,
	.oldLayout = VK_IMAGE_LAYOUT_UNDEFINED,
	.newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
	.image = image,
	.subresourceRange = subresource_range,
	};
	vkCmdPipelineBarrier(command_buffer, VK_PIPELINE_STAGE_TRANSFER_BIT,
	VK_PIPELINE_STAGE_TRANSFER_BIT, VK_DEPENDENCY_BY_REGION_BIT, 0, nullptr, 0,
	nullptr, 1, &undefined_transfer_dst_image_memory_barrier);

	// Linear gradient.
	for (uint32_t y = 0; y < height; ++y) {
	for (uint32_t x = 0; x < width; ++x) {
	reinterpret_cast<uint32_t>(pData)[y width + x] = 0xff0000ff \| (x << 8);
	}
	}

	VkImageSubresourceLayers subresource_layers = {
	.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
	.mipLevel = 0,
	.baseArrayLayer = 0,
	.layerCount = 1,
	};
	VkBufferImageCopy region = {
	.bufferOffset = 0,
	.bufferRowLength = width,
	.bufferImageHeight = height,
	.imageSubresource = subresource_layers,
	.imageOffset = VkOffset3D{0, 0, 0},
	.imageExtent = VkExtent3D{width, height, 1},
	};
	vkCmdCopyBufferToImage(command_buffer, buffer, image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1,
	&region);

	VkImageMemoryBarrier transfer_dst_transfer_src_image_memory_barrier = {
	.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,
	.pNext = nullptr,
	.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT,
	.dstAccessMask = VK_ACCESS_TRANSFER_READ_BIT,
	.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
	.newLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL,
	.image = image,
	.subresourceRange = subresource_range,
	};
	vkCmdPipelineBarrier(command_buffer, VK_PIPELINE_STAGE_TRANSFER_BIT,
	VK_PIPELINE_STAGE_TRANSFER_BIT, VK_DEPENDENCY_BY_REGION_BIT, 0, nullptr, 0,
	nullptr, 1, &transfer_dst_transfer_src_image_memory_barrier);

	EXPECT_EQ(VK_SUCCESS, vkEndCommandBuffer(command_buffer));

	VkQueue queue;
	vkGetDeviceQueue(device, queue_family_index, 0, &queue);

	VkSubmitInfo submit_info = {
	.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO,
	.pNext = nullptr,
	.waitSemaphoreCount = 0,
	.pWaitSemaphores = nullptr,
	.pWaitDstStageMask = nullptr,
	.commandBufferCount = 1,
	.pCommandBuffers = &command_buffer,
	.signalSemaphoreCount = 0,
	.pSignalSemaphores = nullptr,
	};
	EXPECT_EQ(VK_SUCCESS, vkQueueSubmit(queue, 1, &submit_info, 0));
	EXPECT_EQ(VK_SUCCESS, vkQueueWaitIdle(queue));

	// Trim device memory to compact size. This will reduce the memory
	// committment to what is required for the current image layout.
	f_vkTrimCompactImageDeviceMemoryFUCHSIA(device, image, image_memory, 0);
	// TODO(reveman): Querying commitment for memory when
	// VK_MEMORY_PROPERTY_LAZILY_ALLOCATED_BIT is supported.
	}