[Mesa-dev] Remaining work for the i965 on disk shader cache

[Timothy Arceri]

Hi guys,

I've rebased and updated the i965 cache on master which now contains 
most of the GLSL IR cache pieces. There are 4 extra GLSL IR patches 
required by i965 as it needs to fallback to compiling GLSL IR if there 
is a cache miss at draw time (radeonsi will always have tgsi so doesn't 
require this extra step).

There are two more pieces required to hook up and enabled the cache 
(which will still be disabled by default).

1. Call disk_cache_create(); in the patch "i965: make use of on disk 
shader cache" when brw_context is created. We need to pass the unique 
mesa id and the gpu gen to it as strings, as far as I can tell there is 
currently nothing we can reuse to create the gpu id string.

2. Add cache support for the compute stage, see "i965: add shader cache 
support for geometry shaders" as an example of how to do this.

The latest patches are in the shader-cache41 branch of 
https://github.com/tarceri/Mesa.git

So if anyone wants to pick this up, go for it :)

I was originally planning on finishing this up myself but I've got a lot 
of spinning up on radeonsi and llvm to do so I thought I'd pass it off 
to someone who will give it their full attention.

Thanks,
Tim