VkPhysicalDeviceFragmentDensityMapFeaturesEXT - Structure describing fragment density map features that can be supported by an implementation

Members

The members of the PhysicalDeviceFragmentDensityMapFeaturesEXT structure describe the following features:

Description

If the PhysicalDeviceFragmentDensityMapFeaturesEXT structure is included in the pNext chain of PhysicalDeviceFeatures2, it is filled with values indicating whether each feature is supported. PhysicalDeviceFragmentDensityMapFeaturesEXT can also be included in pNext chain of DeviceCreateInfo to enable the features.

Valid Usage (Implicit)

See Also

Bool32, StructureType

VkPhysicalDeviceFragmentDensityMapPropertiesEXT - Structure describing fragment density map properties that can be supported by an implementation

Members

The members of the PhysicalDeviceFragmentDensityMapPropertiesEXT structure describe the following implementation-dependent limits:

Valid Usage (Implicit)

If the PhysicalDeviceFragmentDensityMapPropertiesEXT structure is included in the pNext chain of PhysicalDeviceProperties2, it is filled with the implementation-dependent limits and properties.

See Also

Bool32, Extent2D, StructureType

VkRenderPassFragmentDensityMapCreateInfoEXT - Structure containing fragment density map attachment for render pass

Description

The fragment density map is read at an implementation-dependent time with the following constraints determined by the attachment’s image view flags:

• IMAGE_VIEW_CREATE_FRAGMENT_DENSITY_MAP_DYNAMIC_BIT_EXT specifies that the fragment density map will be read by the device during PIPELINE_STAGE_FRAGMENT_DENSITY_PROCESS_BIT_EXT
• IMAGE_VIEW_CREATE_FRAGMENT_DENSITY_MAP_DEFERRED_BIT_EXT specifies that the fragment density map will be read by the host during endCommandBuffer of the primary command buffer that the render pass is recorded into
• Otherwise the fragment density map will be read by the host during cmdBeginRenderPass

The fragment density map may additionally be read by the device during PIPELINE_STAGE_FRAGMENT_DENSITY_PROCESS_BIT_EXT for any mode.

If this structure is not present, it is as if fragmentDensityMapAttachment was given as ATTACHMENT_UNUSED.

Valid Usage

• If fragmentDensityMapAttachment is not ATTACHMENT_UNUSED, fragmentDensityMapAttachment must be less than RenderPassCreateInfo::attachmentCount

• If fragmentDensityMapAttachment is not ATTACHMENT_UNUSED, fragmentDensityMapAttachment must not be an element of SubpassDescription::pInputAttachments, SubpassDescription::pColorAttachments, SubpassDescription::pResolveAttachments, SubpassDescription::pDepthStencilAttachment, or SubpassDescription::pPreserveAttachments for any subpass
• If fragmentDensityMapAttachment is not ATTACHMENT_UNUSED, layout must be equal to IMAGE_LAYOUT_FRAGMENT_DENSITY_MAP_OPTIMAL_EXT, or IMAGE_LAYOUT_GENERAL
• If fragmentDensityMapAttachment is not ATTACHMENT_UNUSED, fragmentDensityMapAttachment must reference an attachment with a loadOp equal to ATTACHMENT_LOAD_OP_LOAD or ATTACHMENT_LOAD_OP_DONT_CARE
• If fragmentDensityMapAttachment is not ATTACHMENT_UNUSED, fragmentDensityMapAttachment must reference an attachment with a storeOp equal to ATTACHMENT_STORE_OP_DONT_CARE

Valid Usage (Implicit)

• sType must be STRUCTURE_TYPE_RENDER_PASS_FRAGMENT_DENSITY_MAP_CREATE_INFO_EXT

• fragmentDensityMapAttachment must be a valid AttachmentReference structure

See Also

AttachmentReference, StructureType