[Libre-soc-bugs] [Bug 251] Initial 3D MESA non-accelerated software-only driver is needed

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=251

--- Comment #13 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to Jacob Lifshay from comment #9)

> They don't explicitly say so, but it becomes apparent from looking around
> some: it doesn't support OpKill which is only used in fragment shaders
> (required for Vulkan), it also doesn't support any of the glsl standard
> library (only the OpenCL standard library), which is required for Vulkan.
> 
> https://www.khronos.org/registry/spir-v/specs/unified1/GLSL.std.450.html

i was also kinda expecting to use NIR, on the assumption that it would
be less work, given that (i think?) now 3 MESA drivers use it.

however to be honest it really doesn't matter: if for example it's easier
to add OpKill (and other ops) to llvm-spirv, that's great.

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