Investigating test_vulkan issues

[MariaChizhova]

While investigating the test_vulkan buffer_single_queue on a recent Android version two problems surfaced:

1. The usage of Core API functionality not available on the API version the instance is created with.

• This can be fixed by either increasing the API version (to VK_API_VERSION_1_1), or by enabling and using the KHR extension function entrypoint (in our case it was vkGetBufferMemoryRequirements2KHR).

2. Assumptions on supported handle types for VulkanBuffer.

• Makes assumptions about VULKAN_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_FD being supported unconditionally.
• Misses coverage for VK_EXTERNAL_MEMORY_HANDLE_TYPE_DMA_BUF_BIT_EXT, VK_EXTERNAL_MEMORY_HANDLE_TYPE_ANDROID_HARDWARE_BUFFER_BIT_ANDROID, and others depending on availability on a platform.

As the test is not finalized I hope this can be addressed.

[bashbaug]

Hello!

We recently merged #2076, which should solve part (1).

Solving part (2) requires more significant work, and may be moved to a separate issue.