vkd3d: Thoughts on how to include shaders in the project?

[Philip Rebohle]

Am 04.11.19 um 17:23 schrieb Hans-Kristian Arntzen:
> 
> On 11/4/19 4:46 PM, Philip Rebohle wrote:
>> Hello,
>>
>> I'm currently looking into getting Deus Ex: Mankind Divided to run on 
>> vkd3d. Among other issues, it uses ClearUnorderedAccessView for typed 
>> buffer views, which is currently not supported and will require the use
>> of a compute shader.
>>
>> There are also a few other areas where shader-based implementations 
>> might become necessary in the future, e.g. for copies between depth 
>> and color images, ResolveSubresource with typeless images, etc.
>>
>> What would be the preferred way to integrate shaders for this purpose 
>> in vkd3d?
>>
>> One option would be to compile GLSL shaders at build-time to a C 
>> header containing the SPIR-V code, which could then be included in the 
>> vkd3d source files directly.
>>
>> This would introduce glslangValidator as a new build-time dependency, 
>> is that acceptable? Also, how would this be implemented in the build 
>> system? I don't have much experience with autoconf, so some help in 
>> that regard would be highly appreciated.
> 
> I can suggest using shaderc, as glslc has a built-in option to emit a C 
> array, using -mfmt=c, which can be #included into a C file. Doing the 
> same in glslangValidator might be more work overall.

glslangValidator also provides --variable-name to generate a C array, 
which I'm using in DXVK without too much of a hassle. Does shaderc do 
anything differently?

- Philip

> Cheers,
> Hans-Kristian
> 
>>
>> I'd like to avoid including pre-compiled SPIR-V binaries in the source 
>> tree directly or installing them as separate files if possible, since 
>> doing so would complicate the workflow significantly.
>>
>> Regards,
>>
>> - Philip
>>
>