vkCmdSetAttachmentFeedbackLoopEnableEXT(3)

C Specification

To dynamically set whether a pipeline can access a resource as a non-attachment while it is also used as an attachment that is written to, call:

// Provided by VK_EXT_attachment_feedback_loop_dynamic_state
void vkCmdSetAttachmentFeedbackLoopEnableEXT(
    VkCommandBuffer                             commandBuffer,
    VkImageAspectFlags                          aspectMask);

Parameters

commandBuffer is the command buffer into which the command will be recorded.
aspectMask specifies the types of attachments for which feedback loops will be enabled. Attachment types whose aspects are not included in aspectMask will have feedback loops disabled.

Description

For attachments that are written to in a render pass, only attachments with the aspects specified in aspectMask can be accessed as non-attachments by subsequent drawing commands.

Valid Usage

VUID-vkCmdSetAttachmentFeedbackLoopEnableEXT-attachmentFeedbackLoopDynamicState-08862
The attachmentFeedbackLoopDynamicState feature must be enabled
VUID-vkCmdSetAttachmentFeedbackLoopEnableEXT-aspectMask-08863
aspectMask must only include VK_IMAGE_ASPECT_NONE, VK_IMAGE_ASPECT_COLOR_BIT, VK_IMAGE_ASPECT_DEPTH_BIT, and VK_IMAGE_ASPECT_STENCIL_BIT
VUID-vkCmdSetAttachmentFeedbackLoopEnableEXT-attachmentFeedbackLoopLayout-08864
If the attachmentFeedbackLoopLayout feature is not enabled, aspectMask must be VK_IMAGE_ASPECT_NONE

Valid Usage (Implicit)

VUID-vkCmdSetAttachmentFeedbackLoopEnableEXT-commandBuffer-parameter
commandBuffer must be a valid VkCommandBuffer handle
VUID-vkCmdSetAttachmentFeedbackLoopEnableEXT-aspectMask-parameter
aspectMask must be a valid combination of VkImageAspectFlagBits values
VUID-vkCmdSetAttachmentFeedbackLoopEnableEXT-commandBuffer-recording
commandBuffer must be in the recording state
VUID-vkCmdSetAttachmentFeedbackLoopEnableEXT-commandBuffer-cmdpool
The VkCommandPool that commandBuffer was allocated from must support graphics operations
VUID-vkCmdSetAttachmentFeedbackLoopEnableEXT-videocoding
This command must only be called outside of a video coding scope

Host Synchronization

Host access to commandBuffer must be externally synchronized
Host access to the VkCommandPool that commandBuffer was allocated from must be externally synchronized