vkd3d - DXIL support progress?

[Hans-Kristian Arntzen]

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> 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.

Cheers,
Hans-Kristian