vkd3d - DXIL support progress?

[Hans-Kristian Arntzen]

On 10/18/19 5:02 PM, Greg Roth wrote:
> Just to be clear, the control flow structuring problem is something I 
> have addressed, so work on an algorithm that would solve this problem 
> would not be duplicated effort.

I assume a typo here, there's a contradiction.

Cheers,
Hans-Kristian

>
> Greg
>
>
>
> On Fri, Oct 18, 2019 at 8:46 AM Henri Verbeet <hverbeet at gmail.com 
> <mailto:hverbeet at gmail.com>> wrote:
>
>     On Fri, 18 Oct 2019 at 18:08, Hans-Kristian Arntzen
>     <post at arntzen-software.no <mailto:post at arntzen-software.no>> wrote:
>     > On 10/18/19 4:32 PM, Henri Verbeet wrote:
>     > > On Fri, 18 Oct 2019 at 17:51, Hans-Kristian Arntzen
>     > > <post at arntzen-software.no <mailto:post at arntzen-software.no>>
>     wrote:
>     > >> Most of the (little) time I've spent so far as been coming up
>     with an algorithm to convert DXIL's unstructured control flow to
>     something which conforms to SPIR-V's structured model.
>     > >>
>     > > I may be missing something, but the existing vkd3d-shader code
>     already
>     > > needs to take care of that
>     > > (vkd3d_dxbc_compiler_emit_control_flow_instruction() in
>     particular),
>     > > since both TPF and the (very thin) vkd3d-shader IR are
>     unstructured as
>     > > well.
>     >
>     >  From what I can tell, the DXBC is structured already, and
>     if/endif and
>     > friends are already emitted directly, so there isn't any complex
>     > analysis required to convert it to SPIR-V. DXIL is unstructured,
>     i.e.,
>     > it's a goto soup, but it has to be a reducible CFG at least. I
>     didn't
>     > see any implementation for that.
>     >
>     Right, I wouldn't exactly call TPF structured, but it's not quite
>     unstructured either, and doesn't have goto/jump. I wasn't aware that
>     DXIL did.
>
>     Henri
>
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