Vulkan descriptor binding

Question

In my vulkan application i used to draw meshes like this when all the meshes used the same texture

Updatedescriptorsets(texture)

Command buffer record
{
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Answer 1

If you update a descriptor set then all command buffers that this descriptor set is bound to will become invalid. Invalid command buffers cannot be submitted or be executed by the GPU.

What you basically need to do is to update descriptor sets before you bind them.

This odd behavior is there because in vkCmdBindDescriptorSets some implementations take the vulkan descriptor set, translate it to native descriptor tables and then store it in the command buffer. So if you update the descriptor set after vkCmdBindDescriptorSets the command buffer will be seeing stale data. VK_EXT_descriptor_indexing extension relaxed this behavior under some circumstances.