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创建depth/stencil attachment

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苏��明才
苏明才
Vulkan驱动填坑狮

创建过程​

  1. 创建一个depth/stencil image
  2. 查找image memory requirements
  3. 分配、绑定image memory
  4. 设置image layout
  5. 创建depth/stencil imageview

示例代码​

VkFormat image_format = VK_FORMAT_D16_UNORM;  //支持depth\stencil的format
VkImageCreateInfo image_info = {};
VkFormatProperties props;
vkGetPhysicalDeviceFormatProperties(physical_device, image_format, &props);
if (props.linearTilingFeatures & VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT) {
	image_info.tiling = VK_IMAGE_TILING_LINEAR;
} else if (props.optimalTilingFeatures & VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT) {
	image_info.tiling = VK_IMAGE_TILING_OPTIMAL;
}
 
image_info.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
image_info.pNext = NULL;
image_info.imageType = VK_IMAGE_TYPE_2D;
image_info.format = image_format;
image_info.extent.width = 64;
image_info.extent.height = 64;
image_info.extent.depth = 1;
image_info.mipLevels = 1;
image_info.arrayLayers = 1;
image_info.samples = VK_SAMPLE_COUNT_1_BIT;
image_info.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
image_info.usage = VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT;
image_info.queueFamilyIndexCount = 0;
image_info.pQueueFamilyIndices = NULL;
image_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
image_info.flags = 0;
 
VkImage image;
vkCreateImage(device, &image_info, NULL, &image);
 
VkMemoryRequirements mem_reqs;
vkGetImageMemoryRequirements(device, image, &mem_reqs);
 
VkMemoryAllocateInfo mem_alloc = {};
mem_alloc.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
mem_alloc.pNext = NULL;
mem_alloc.memoryTypeIndex = 0;
mem_alloc.allocationSize = mem_reqs.size;
VkDeviceMemory mem;
vkAllocateMemory(device, &mem_alloc, NULL, &mem);
 
vkBindImageMemory(device, image, mem, 0)
 
VkImageView view;
VkImageViewCreateInfo view_info = {};
view_info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
view_info.pNext = NULL;
view_info.image = image;
view_info.format = image_format;
view_info.components.r = VK_COMPONENT_SWIZZLE_R;
view_info.components.g = VK_COMPONENT_SWIZZLE_G;
view_info.components.b = VK_COMPONENT_SWIZZLE_B;
view_info.components.a = VK_COMPONENT_SWIZZLE_A;
view_info.subresourceRange.aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT;  //或者是VK_IMAGE_ASPECT_STENCIL_BIT
view_info.subresourceRange.baseMipLevel = 0;
view_info.subresourceRange.levelCount = 1;
view_info.subresourceRange.baseArrayLayer = 0;
view_info.subresourceRange.layerCount = 1;
view_info.viewType = VK_IMAGE_VIEW_TYPE_2D;
view_info.flags = 0;
 
vkCreateImageView(device, &view_info, NULL, &view);