AMD on DX12 Renders Nothing on msaa-line Example

[cwfitzgerald]

It literally renders a transparent image.

[Elabajaba]

It renders properly on my system (AMD + DX12).

[cwfitzgerald]

I should have clarified, this is in the test, does cargo nextext run with dx12 report an unexpected success?

[Elabajaba]

It does.

fun

edit: Are the comparisons screenshot.png (the base), screenshot-dx12-actual.png (what the test renders?) screenshot-dx12-difference.png (the difference between base and test render?) in wgpu\examples\msaa-line? (or I guess now examples\msaa-line\) Because on my system the dx12 screenshot just looks more anti-aliased.

screenshot-dx12-actual:

[teoxoy]

Has this been fixed by newer drivers?

[cwfitzgerald]

It only reproduced on one GPU that I no longer have access too, and didn't reproduce for others, and only affected tests, so I just closed it

[teoxoy]

I see, will mark it as a driver bug then. Do you remember what model it was?

Also, should we remove the expected fail in the test then?

wgpu/examples/msaa-line/src/main.rs

Line 333 in fd53ea9

// AMD seems to render nothing on DX12 https://github.com/gfx-rs/wgpu/issues/3838

[cwfitzgerald]

Yeah we should.

RX 580

[Friz64]

I have access to a RX 580 and can confirm it is fixed.