tree 22c833205f564016e5b75c762ab868e52ca9feec
parent 6217716e8f6091f7bbacbb9fa2f52997d3ac5d03
author Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl> 1462193752 +0200
committer Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl> 1464293224 +0200

radeonsi: Use buffer loads and stores for passing data from TCS to TES.

We always try to use 4-component loads, as LLVM does not combine loads
and they bypass the L1 cache.

We can't use a similar strategy for stores and this is especially
notable with the tess factors, as they are often set with separate
MOV's per component in the TGSI.

We keep storing to LDS and the LDS space, so we can load the outputs
later, either due to the shader, of for wrting the tess factors.

Signed-off-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>