C Specification
The set of image layouts consists of:
// Provided by VK_VERSION_1_0
typedef enum VkImageLayout {
VK_IMAGE_LAYOUT_UNDEFINED = 0,
VK_IMAGE_LAYOUT_GENERAL = 1,
VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL = 2,
VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL = 3,
VK_IMAGE_LAYOUT_DEPTH_STENCIL_READ_ONLY_OPTIMAL = 4,
VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL = 5,
VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL = 6,
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL = 7,
VK_IMAGE_LAYOUT_PREINITIALIZED = 8,
// Provided by VK_VERSION_1_1
VK_IMAGE_LAYOUT_DEPTH_READ_ONLY_STENCIL_ATTACHMENT_OPTIMAL = 1000117000,
// Provided by VK_VERSION_1_1
VK_IMAGE_LAYOUT_DEPTH_ATTACHMENT_STENCIL_READ_ONLY_OPTIMAL = 1000117001,
// Provided by VK_VERSION_1_2
VK_IMAGE_LAYOUT_DEPTH_ATTACHMENT_OPTIMAL = 1000241000,
// Provided by VK_VERSION_1_2
VK_IMAGE_LAYOUT_DEPTH_READ_ONLY_OPTIMAL = 1000241001,
// Provided by VK_VERSION_1_2
VK_IMAGE_LAYOUT_STENCIL_ATTACHMENT_OPTIMAL = 1000241002,
// Provided by VK_VERSION_1_2
VK_IMAGE_LAYOUT_STENCIL_READ_ONLY_OPTIMAL = 1000241003,
// Provided by VK_KHR_swapchain
VK_IMAGE_LAYOUT_PRESENT_SRC_KHR = 1000001002,
// Provided by VK_KHR_shared_presentable_image
VK_IMAGE_LAYOUT_SHARED_PRESENT_KHR = 1000111000,
// Provided by VK_NV_shading_rate_image
VK_IMAGE_LAYOUT_SHADING_RATE_OPTIMAL_NV = 1000164003,
// Provided by VK_EXT_fragment_density_map
VK_IMAGE_LAYOUT_FRAGMENT_DENSITY_MAP_OPTIMAL_EXT = 1000218000,
// Provided by VK_KHR_maintenance2
VK_IMAGE_LAYOUT_DEPTH_READ_ONLY_STENCIL_ATTACHMENT_OPTIMAL_KHR = VK_IMAGE_LAYOUT_DEPTH_READ_ONLY_STENCIL_ATTACHMENT_OPTIMAL,
// Provided by VK_KHR_maintenance2
VK_IMAGE_LAYOUT_DEPTH_ATTACHMENT_STENCIL_READ_ONLY_OPTIMAL_KHR = VK_IMAGE_LAYOUT_DEPTH_ATTACHMENT_STENCIL_READ_ONLY_OPTIMAL,
// Provided by VK_KHR_fragment_shading_rate
VK_IMAGE_LAYOUT_FRAGMENT_SHADING_RATE_ATTACHMENT_OPTIMAL_KHR = VK_IMAGE_LAYOUT_SHADING_RATE_OPTIMAL_NV,
// Provided by VK_KHR_separate_depth_stencil_layouts
VK_IMAGE_LAYOUT_DEPTH_ATTACHMENT_OPTIMAL_KHR = VK_IMAGE_LAYOUT_DEPTH_ATTACHMENT_OPTIMAL,
// Provided by VK_KHR_separate_depth_stencil_layouts
VK_IMAGE_LAYOUT_DEPTH_READ_ONLY_OPTIMAL_KHR = VK_IMAGE_LAYOUT_DEPTH_READ_ONLY_OPTIMAL,
// Provided by VK_KHR_separate_depth_stencil_layouts
VK_IMAGE_LAYOUT_STENCIL_ATTACHMENT_OPTIMAL_KHR = VK_IMAGE_LAYOUT_STENCIL_ATTACHMENT_OPTIMAL,
// Provided by VK_KHR_separate_depth_stencil_layouts
VK_IMAGE_LAYOUT_STENCIL_READ_ONLY_OPTIMAL_KHR = VK_IMAGE_LAYOUT_STENCIL_READ_ONLY_OPTIMAL,
} VkImageLayout;
Description
The type(s) of device access supported by each layout are:
-
VK_IMAGE_LAYOUT_UNDEFINEDdoes not support device access. This layout must only be used as theinitialLayoutmember of VkImageCreateInfo orVkAttachmentDescription, or as theoldLayoutin an image transition. When transitioning out of this layout, the contents of the memory are not guaranteed to be preserved. -
VK_IMAGE_LAYOUT_PREINITIALIZEDdoes not support device access. This layout must only be used as theinitialLayoutmember of VkImageCreateInfo orVkAttachmentDescription, or as theoldLayoutin an image transition. When transitioning out of this layout, the contents of the memory are preserved. This layout is intended to be used as the initial layout for an image whose contents are written by the host, and hence the data can be written to memory immediately, without first executing a layout transition. Currently,VK_IMAGE_LAYOUT_PREINITIALIZEDis only useful with linear images because there is not a standard layout defined forVK_IMAGE_TILING_OPTIMALimages. -
VK_IMAGE_LAYOUT_GENERALsupports all types of device access. -
VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMALmust only be used as a color or resolve attachment in aVkFramebuffer. This layout is valid only for image subresources of images created with theVK_IMAGE_USAGE_COLOR_ATTACHMENT_BITusage bit enabled. -
VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMALspecifies a layout for both the depth and stencil aspects of a depth/stencil format image allowing read and write access as a depth/stencil attachment. It is equivalent toVK_IMAGE_LAYOUT_DEPTH_ATTACHMENT_OPTIMALandVK_IMAGE_LAYOUT_STENCIL_ATTACHMENT_OPTIMAL. -
VK_IMAGE_LAYOUT_DEPTH_STENCIL_READ_ONLY_OPTIMALspecifies a layout for both the depth and stencil aspects of a depth/stencil format image allowing read only access as a depth/stencil attachment or in shaders as a sampled image, combined image/sampler, or input attachment. It is equivalent toVK_IMAGE_LAYOUT_DEPTH_READ_ONLY_OPTIMALandVK_IMAGE_LAYOUT_STENCIL_READ_ONLY_OPTIMAL. -
VK_IMAGE_LAYOUT_DEPTH_READ_ONLY_STENCIL_ATTACHMENT_OPTIMALspecifies a layout for depth/stencil format images allowing read and write access to the stencil aspect as a stencil attachment, and read only access to the depth aspect as a depth attachment or in shaders as a sampled image, combined image/sampler, or input attachment. It is equivalent toVK_IMAGE_LAYOUT_DEPTH_READ_ONLY_OPTIMALandVK_IMAGE_LAYOUT_STENCIL_ATTACHMENT_OPTIMAL. -
VK_IMAGE_LAYOUT_DEPTH_ATTACHMENT_STENCIL_READ_ONLY_OPTIMALspecifies a layout for depth/stencil format images allowing read and write access to the depth aspect as a depth attachment, and read only access to the stencil aspect as a stencil attachment or in shaders as a sampled image, combined image/sampler, or input attachment. It is equivalent toVK_IMAGE_LAYOUT_DEPTH_ATTACHMENT_OPTIMALandVK_IMAGE_LAYOUT_STENCIL_READ_ONLY_OPTIMAL. -
VK_IMAGE_LAYOUT_DEPTH_ATTACHMENT_OPTIMALspecifies a layout for the depth aspect of a depth/stencil format image allowing read and write access as a depth attachment. -
VK_IMAGE_LAYOUT_DEPTH_READ_ONLY_OPTIMALspecifies a layout for the depth aspect of a depth/stencil format image allowing read-only access as a depth attachment or in shaders as a sampled image, combined image/sampler, or input attachment. -
VK_IMAGE_LAYOUT_STENCIL_ATTACHMENT_OPTIMALspecifies a layout for the stencil aspect of a depth/stencil format image allowing read and write access as a stencil attachment. -
VK_IMAGE_LAYOUT_STENCIL_READ_ONLY_OPTIMALspecifies a layout for the stencil aspect of a depth/stencil format image allowing read-only access as a stencil attachment or in shaders as a sampled image, combined image/sampler, or input attachment. -
VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMALspecifies a layout allowing read-only access in a shader as a sampled image, combined image/sampler, or input attachment. This layout is valid only for image subresources of images created with theVK_IMAGE_USAGE_SAMPLED_BITorVK_IMAGE_USAGE_INPUT_ATTACHMENT_BITusage bit enabled. -
VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMALmust only be used as a source image of a transfer command (see the definition ofVK_PIPELINE_STAGE_TRANSFER_BIT). This layout is valid only for image subresources of images created with theVK_IMAGE_USAGE_TRANSFER_SRC_BITusage bit enabled. -
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMALmust only be used as a destination image of a transfer command. This layout is valid only for image subresources of images created with theVK_IMAGE_USAGE_TRANSFER_DST_BITusage bit enabled. -
VK_IMAGE_LAYOUT_PRESENT_SRC_KHRmust only be used for presenting a presentable image for display. A swapchain’s image must be transitioned to this layout before calling vkQueuePresentKHR, and must be transitioned away from this layout after calling vkAcquireNextImageKHR. -
VK_IMAGE_LAYOUT_SHARED_PRESENT_KHRis valid only for shared presentable images, and must be used for any usage the image supports. -
VK_IMAGE_LAYOUT_FRAGMENT_SHADING_RATE_ATTACHMENT_OPTIMAL_KHRmust only be used as a fragment shading rate attachment or shading rate image. This layout is valid only for image subresources of images created with theVK_IMAGE_USAGE_FRAGMENT_SHADING_RATE_ATTACHMENT_BIT_KHRusage bit enabled. -
VK_IMAGE_LAYOUT_FRAGMENT_DENSITY_MAP_OPTIMAL_EXTmust only be used as a fragment density map attachment in aVkRenderPass. This layout is valid only for image subresources of images created with theVK_IMAGE_USAGE_FRAGMENT_DENSITY_MAP_BIT_EXTusage bit enabled.
The layout of each image subresource is not a state of the image subresource
itself, but is rather a property of how the data in memory is organized, and
thus for each mechanism of accessing an image in the API the application
must specify a parameter or structure member that indicates which image
layout the image subresource(s) are considered to be in when the image will
be accessed.
For transfer commands, this is a parameter to the command (see https://www.khronos.org/registry/vulkan/specs/1.2-extensions/html/vkspec.html#clears
and https://www.khronos.org/registry/vulkan/specs/1.2-extensions/html/vkspec.html#copies).
For use as a framebuffer attachment, this is a member in the substructures
of the VkRenderPassCreateInfo (see Render Pass).
For use in a descriptor set, this is a member in the
VkDescriptorImageInfo structure (see https://www.khronos.org/registry/vulkan/specs/1.2-extensions/html/vkspec.html#descriptorsets-updates).
See Also
VkAttachmentDescription, VkAttachmentDescription2, VkAttachmentDescriptionStencilLayout, VkAttachmentReference, VkAttachmentReference2, VkAttachmentReferenceStencilLayout, VkBlitImageInfo2KHR, VkCopyBufferToImageInfo2KHR, VkCopyImageInfo2KHR, VkCopyImageToBufferInfo2KHR, VkDescriptorImageInfo, VkImageCreateInfo, VkImageMemoryBarrier, VkResolveImageInfo2KHR, vkCmdBindShadingRateImageNV, vkCmdBlitImage, vkCmdClearColorImage, vkCmdClearDepthStencilImage, vkCmdCopyBufferToImage, vkCmdCopyImage, vkCmdCopyImageToBuffer, vkCmdResolveImage
Document Notes
For more information, see the Vulkan Specification
This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.