vkGetImageDrmFormatModifierPropertiesEXT - Returns an image’s DRM format modifier

Return Codes

Success

• SUCCESS

Failure

• ERROR_OUT_OF_HOST_MEMORY

See Also

Device, Image, ImageDrmFormatModifierPropertiesEXT

VkDrmFormatModifierPropertiesListEXT - Structure specifying the list of DRM format modifiers supported for a format

Description

If pDrmFormatModifierProperties is NULL, then the function returns in drmFormatModifierCount the number of modifiers compatible with the queried format. Otherwise, the application must set drmFormatModifierCount to the length of the array pDrmFormatModifierProperties; the function will write at most drmFormatModifierCount elements to the array, and will return in drmFormatModifierCount the number of elements written.

Among the elements in array pDrmFormatModifierProperties, each returned drmFormatModifier must be unique.

Valid Usage (Implicit)

See Also

DrmFormatModifierPropertiesEXT, StructureType

VkDrmFormatModifierPropertiesEXT - Structure specifying properties of a format when combined with a DRM format modifier

Description

The returned drmFormatModifierTilingFeatures must contain at least one bit.

The implementation must not return DRM_FORMAT_MOD_INVALID in drmFormatModifier.

An image’s memory planecount (as returned by drmFormatModifierPlaneCount) is distinct from its format planecount (in the sense of multi-planar Y′CBCR formats). In ImageAspectFlags, each VK_IMAGE_ASPECT_MEMORY_PLANE/i_BIT_EXT represents a _memory plane/ and each VK_IMAGE_ASPECT_PLANE/i_BIT a _format plane/.

An image’s set of format planes is an ordered partition of the image’s content into separable groups of format channels. The ordered partition is encoded in the name of each Format. For example, FORMAT_G8_B8R8_2PLANE_420_UNORM contains two format planes; the first plane contains the green channel and the second plane contains the blue channel and red channel. If the format name does not contain PLANE, then the format contains a single plane; for example, FORMAT_R8G8B8A8_UNORM. Some commands, such as cmdCopyBufferToImage, do not operate on all format channels in the image, but instead operate only on the format planes explicitly chosen by the application and operate on each format plane independently.

An image’s set of memory planes is an ordered partition of the image’s memory rather than the image’s content. Each memory plane is a contiguous range of memory. The union of an image’s memory planes is not necessarily contiguous.

If an image is linear, then the partition is the same for memory planes and for /format planes/. Therefore, if the returned drmFormatModifier is DRM_FORMAT_MOD_LINEAR, then drmFormatModifierPlaneCount must equal the format planecount, and drmFormatModifierTilingFeatures must be identical to the FormatProperties2::linearTilingFeatures returned in the same pNext chain.

If an image is non-linear, then the partition of the image’s memory into memory planes is implementation-specific and may be unrelated to the partition of the image’s content into format planes. For example, consider an image whose format is FORMAT_G8_B8_R8_3PLANE_420_UNORM, tiling is IMAGE_TILING_DRM_FORMAT_MODIFIER_EXT, whose drmFormatModifier is not DRM_FORMAT_MOD_LINEAR, and flags lacks IMAGE_CREATE_DISJOINT_BIT. The image has 3 format planes, and commands such cmdCopyBufferToImage act on each format plane independently as if the data of each format plane were separable from the data of the other planes. In a straightforward implementation, the implementation may store the image’s content in 3 adjacent memory planes where each memory plane corresponds exactly to a format plane. However, the implementation may also store the image’s content in a single memory plane where all format channels are combined using an implementation-private block-compressed format; or the implementation may store the image’s content in a collection of 7 adjacent memory planes using an implementation-private sharding technique. Because the image is non-linear and non-disjoint, the implementation has much freedom when choosing the image’s placement in memory.

The memory planecount applies to function parameters and structures only when the API specifies an explicit requirement on drmFormatModifierPlaneCount. In all other cases, the /memory planecount/ is ignored.

See Also

DrmFormatModifierPropertiesListEXT, FormatFeatureFlags

VkPhysicalDeviceImageDrmFormatModifierInfoEXT - Structure specifying a DRM format modifier as image creation parameter

Description

If the drmFormatModifier is incompatible with the parameters specified in PhysicalDeviceImageFormatInfo2 and its pNext chain, then getPhysicalDeviceImageFormatProperties2 returns ERROR_FORMAT_NOT_SUPPORTED. The implementation must support the query of any drmFormatModifier, including unknown and invalid modifier values.

Valid Usage

• If sharingMode is SHARING_MODE_CONCURRENT, then pQueueFamilyIndices must be a valid pointer to an array of queueFamilyIndexCount uint32_t values

• If sharingMode is SHARING_MODE_CONCURRENT, then queueFamilyIndexCount must be greater than 1
• If sharingMode is SHARING_MODE_CONCURRENT, each element of pQueueFamilyIndices must be unique and must be less than the pQueueFamilyPropertyCount returned by getPhysicalDeviceQueueFamilyProperties2 for the physicalDevice that was used to create device

Valid Usage (Implicit)

• sType must be STRUCTURE_TYPE_PHYSICAL_DEVICE_IMAGE_DRM_FORMAT_MODIFIER_INFO_EXT

• sharingMode must be a valid SharingMode value

See Also

SharingMode, StructureType

VkImageDrmFormatModifierListCreateInfoEXT - Specify that an image must be created with a DRM format modifier from the provided list

Valid Usage

• Each modifier in pDrmFormatModifiers must be compatible with the parameters in ImageCreateInfo and its pNext chain, as determined by querying PhysicalDeviceImageFormatInfo2 extended with PhysicalDeviceImageDrmFormatModifierInfoEXT

Valid Usage (Implicit)

• sType must be STRUCTURE_TYPE_IMAGE_DRM_FORMAT_MODIFIER_LIST_CREATE_INFO_EXT

• pDrmFormatModifiers must be a valid pointer to an array of drmFormatModifierCount uint64_t values
• drmFormatModifierCount must be greater than 0

See Also

StructureType

VkImageDrmFormatModifierExplicitCreateInfoEXT - Specify that an image be created with the provided DRM format modifier and explicit memory layout

Description

The ith member of pPlaneLayouts describes the layout of the image’s ith memory plane (that is, VK_IMAGE_ASPECT_MEMORY_PLANE_i_BIT_EXT). In each element of pPlaneLayouts, the implementation must ignore size. The implementation calculates the size of each plane, which the application can query with getImageSubresourceLayout.

When creating an image with ImageDrmFormatModifierExplicitCreateInfoEXT, it is the application’s responsibility to satisfy all valid usage requirements. However, the implementation must validate that the provided pPlaneLayouts, when combined with the provided drmFormatModifier and other creation parameters in ImageCreateInfo and its pNext chain, produce a valid image. (This validation is necessarily implementation-dependent and outside the scope of Vulkan, and therefore not described by valid usage requirements). If this validation fails, then createImage returns ERROR_INVALID_DRM_FORMAT_MODIFIER_PLANE_LAYOUT_EXT.

Valid Usage

• drmFormatModifier must be compatible with the parameters in ImageCreateInfo and its pNext chain, as determined by querying PhysicalDeviceImageFormatInfo2 extended with PhysicalDeviceImageDrmFormatModifierInfoEXT

• drmFormatModifierPlaneCount must be equal to the DrmFormatModifierPropertiesEXT::drmFormatModifierPlaneCount associated with ImageCreateInfo::format and drmFormatModifier, as found by querying DrmFormatModifierPropertiesListEXT
• For each element of pPlaneLayouts, size must be 0
• For each element of pPlaneLayouts, arrayPitch must be 0 if ImageCreateInfo::arrayLayers is 1
• For each element of pPlaneLayouts, depthPitch must be 0 if ImageCreateInfo::extent.depth is 1

Valid Usage (Implicit)

• sType must be STRUCTURE_TYPE_IMAGE_DRM_FORMAT_MODIFIER_EXPLICIT_CREATE_INFO_EXT

• If drmFormatModifierPlaneCount is not 0, pPlaneLayouts must be a valid pointer to an array of drmFormatModifierPlaneCount SubresourceLayout structures

See Also

StructureType, SubresourceLayout

VkImageDrmFormatModifierPropertiesEXT - Properties of an image’s Linux DRM format modifier

Description

If the image was created with ImageDrmFormatModifierListCreateInfoEXT, then the returned drmFormatModifier must belong to the list of modifiers provided at time of image creation in ImageDrmFormatModifierListCreateInfoEXT::pDrmFormatModifiers. If the image was created with ImageDrmFormatModifierExplicitCreateInfoEXT, then the returned drmFormatModifier must be the modifier provided at time of image creation in ImageDrmFormatModifierExplicitCreateInfoEXT::drmFormatModifier.

Valid Usage (Implicit)

See Also

StructureType, getImageDrmFormatModifierPropertiesEXT