SteamVR: VK_EXT_acquire_xlib_display vkGetRandROutputDisplayEXT causes invalid VkDisplayKHR error

[danginsburg]

In SteamVR for direct mode we use VK_EXT_acquire_xlib_display. We get the following validation errors from object_tracker regarding VkDisplayKHR acquired from vkGetRandROutputDisplayEXT:

[ VUID-vkGetDisplayModePropertiesKHR-display-parameter ] Object: 0x157c570 (Type = 29) | Invalid DisplayKHR Object 0x157c570. The spec valid usage text states 'display must be a valid VkDisplayKHR handle' (https://www.khronos.org/registry/vulkan/specs/1.0-extensions/html/vkspec.html#VUID-vkGetDisplayModePropertiesKHR-display-parameter)

[ VUID-vkAcquireXlibDisplayEXT-display-parameter ] Object: 0x26d8570 (Type = 29) | Invalid DisplayKHR Object 0x26d8570. The spec valid usage text states 'display must be a valid VkDisplayKHR handle' (https://www.khronos.org/registry/vulkan/specs/1.0-extensions/html/vkspec.html#VUID-vkAcquireXlibDisplayEXT-display-parameter)" char*

[ VUID-vkRegisterDisplayEventEXT-display-parameter ] Object: 0x1766580 (Type = 29) | Invalid DisplayKHR Object 0x1766580. The spec valid usage text states 'display must be a valid VkDisplayKHR handle' (https://www.khronos.org/registry/vulkan/specs/1.0-extensions/html/vkspec.html#VUID-vkRegisterDisplayEventEXT-display-parameter)

The problem is that the codegen in object_tracker.cpp does not do CreateObject on the kVulkanObjectTypeDisplayKHR in vkGetRandROutputDisplayEXT so object_tracker is unaware of it. I tried modifying object_tracker_generator.py to consider it to have iscreate = True, but the problem is the generated code expect a pAllocator and there isn't one for this function. I figured I'd better pass it off to someone more familiar with the code.

[danginsburg]

Confirmed fixed, closing.

[danginsburg]

Sorry, wrong issue, reopening.