GpuFuture::then_signal_fence and flush does not commute

[yshui]

Template

• Version of vulkano: 0.33.0
• OS: Linux
• GPU (the selected PhysicalDevice): AMD
• GPU Driver: RADV
• Upload of a reasonably minimal complete main.rs file that demonstrates the issue: TODO

Issue

.then_signal_fence_and_flush() fails with:

ResourceAccessError { error: UnexpectedImageLayout { allowed: Undefined, requested: ColorAttachmentOptimal }, use_ref: Some(ResourceUseRef { command_index: 4, command_name: "draw", resource_in_command: DescriptorSet { set: 0, binding: 0, index: 0 }, secondary_use_ref: None }) }

whereas .flush(); .then_signal_fence() works fine.

[yshui]

I figured out what's different in this two cases.

future.flush() calls submit_with_future(.., future: future.previous, ..), but future.then_signal_fence().flush() would call submit_with_future(.., future: future, ..).

And submit_with_future uses the future argument for image access checking.