VK_EXT_subpass_merge_feedback

Other Extension Metadata

Last Modified Date

2022-05-24

IP Status

No known IP claims.

Contributors

• Jan-Harald Fredriksen, Arm
• Jorg Wagner, Arm
• Ting Wei, Arm

Description

This extension adds a mechanism to provide feedback to an application about whether the subpasses specified on render pass creation are merged by the implementation. Additionally, it provides a control to enable or disable subpass merging in the render pass.

New Structures

• VkRenderPassCreationFeedbackInfoEXT
• VkRenderPassSubpassFeedbackInfoEXT
• Extending VkPhysicalDeviceFeatures2, VkDeviceCreateInfo:
  • VkPhysicalDeviceSubpassMergeFeedbackFeaturesEXT
• Extending VkRenderPassCreateInfo2:
  • VkRenderPassCreationFeedbackCreateInfoEXT
• Extending VkRenderPassCreateInfo2, VkSubpassDescription2:
  • VkRenderPassCreationControlEXT
• Extending VkSubpassDescription2:
  • VkRenderPassSubpassFeedbackCreateInfoEXT

New Enums

• VkSubpassMergeStatusEXT

New Enum Constants

• VK_EXT_SUBPASS_MERGE_FEEDBACK_EXTENSION_NAME
• VK_EXT_SUBPASS_MERGE_FEEDBACK_SPEC_VERSION
• Extending VkStructureType:
  • VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SUBPASS_MERGE_FEEDBACK_FEATURES_EXT
  • VK_STRUCTURE_TYPE_RENDER_PASS_CREATION_CONTROL_EXT
  • VK_STRUCTURE_TYPE_RENDER_PASS_CREATION_FEEDBACK_CREATE_INFO_EXT
  • VK_STRUCTURE_TYPE_RENDER_PASS_SUBPASS_FEEDBACK_CREATE_INFO_EXT

Version History

• Revision 1, 2022-03-10
  • Initial draft.
• Revision 2, 2022-05-24
  • Fix structextends and constness issues.