VK_EXT_attachment_feedback_loop_layout

Other Extension Metadata

Last Modified Date

2022-04-04

IP Status

No known IP claims.

Contributors

• Joshua Ashton, Valve
• Faith Ekstrand, Collabora
• Bas Nieuwenhuizen, Google
• Samuel Iglesias Gonsálvez, Igalia
• Ralph Potter, Samsung
• Jan-Harald Fredriksen, Arm
• Ricardo Garcia, Igalia

Description

This extension adds a new image layout, VK_IMAGE_LAYOUT_ATTACHMENT_FEEDBACK_LOOP_OPTIMAL_EXT, which allows applications to have an image layout in which they are able to both render to and sample/fetch from the same subresource of an image in a given render pass.

New Structures

• Extending VkPhysicalDeviceFeatures2, VkDeviceCreateInfo:
  • VkPhysicalDeviceAttachmentFeedbackLoopLayoutFeaturesEXT

New Enum Constants

• VK_EXT_ATTACHMENT_FEEDBACK_LOOP_LAYOUT_EXTENSION_NAME
• VK_EXT_ATTACHMENT_FEEDBACK_LOOP_LAYOUT_SPEC_VERSION
• Extending VkDependencyFlagBits:
  • VK_DEPENDENCY_FEEDBACK_LOOP_BIT_EXT
• Extending VkImageLayout:
  • VK_IMAGE_LAYOUT_ATTACHMENT_FEEDBACK_LOOP_OPTIMAL_EXT
• Extending VkImageUsageFlagBits:
  • VK_IMAGE_USAGE_ATTACHMENT_FEEDBACK_LOOP_BIT_EXT
• Extending VkPipelineCreateFlagBits:
  • VK_PIPELINE_CREATE_COLOR_ATTACHMENT_FEEDBACK_LOOP_BIT_EXT
  • VK_PIPELINE_CREATE_DEPTH_STENCIL_ATTACHMENT_FEEDBACK_LOOP_BIT_EXT
• Extending VkStructureType:
  • VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_ATTACHMENT_FEEDBACK_LOOP_LAYOUT_FEATURES_EXT

Version History

• Revision 2, 2022-04-04 (Joshua Ashton)
  • Renamed from VALVE to EXT.
• Revision 1, 2021-03-09 (Joshua Ashton)
  • Initial draft.