googlesamples/android-vulkan-tutorials

VkQueueFamilyProperties not queried before VkCreateDevice

qining opened this issue · 3 comments

qining commented

Not a big issue, but different platform may have different queue families and the QueueFamily[0] may not support graphics rendering.

ggfan commented

yeah, that is good point. The spec at the beginning though said that all queues and devices must have the same functionality for Android ( for desktop, it could vary ). Yeah, in WSI:
"29.4.1. Android Platform
On Android, all physical devices and queue families must be capable of presentation with any
native window. As a result there is no Android-specific query for these capabilities."

qining commented

Right, so the surface support is not a problem anymore, but strictly speaking we still need to check the VK_QUEUE_GRAPHICS_BIT before we draw anything by the queue. Anyway, not a big deal though.

ggfan commented

thanks, will look at it together with other 2 issues you reported.