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intel/compiler: Add support for bindless shaders

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The Intel bindless thread dispatch model is very simple.  When a compute
shader is to be used for bindless dispatch, it can request a set of
stack IDs.  These are allocated per-dual-subslice by the hardware and
recycled automatically when the stack ID is returned.  Passed to the
bindless dispatch are a global argument address, a stack ID, and an
address of the BINDLESS_SHADER_RECORD to invoke.  When the bindless
shader is dispatched, it is passed its stack ID as well as the global
and local argument pointers.  The local argument pointer is the address
of the BINDLESS_SHADER_RECORD plus some offset which is specified as
part of the BINDLESS_SHADER_RECORD.

Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7356>
This commit is contained in:
Jason Ekstrand
2020-10-21 14:46:50 -05:00
committed by Marge Bot
parent 27f44116fe
commit 7280b0911d
13 changed files with 457 additions and 18 deletions
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9
src/compiler/nir/nir_intrinsics.py
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@@ -1081,3 +1081,12 @@ store("ssbo_block_intel", [-1, 1], [WRMASK, ACCESS, ALIGN_MUL, ALIGN_OFFSET])
# src[] = { value, offset }.
store("shared_block_intel", [1], [BASE, WRMASK, ALIGN_MUL, ALIGN_OFFSET])
# Intrinsics for Intel bindless thread dispatch
system_value("btd_dss_id_intel", 1)
system_value("btd_stack_id_intel", 1)
system_value("btd_global_arg_addr_intel", 1, bit_sizes=[64])
system_value("btd_local_arg_addr_intel", 1, bit_sizes=[64])
# src[] = { global_arg_addr, btd_record }
intrinsic("btd_spawn_intel", src_comp=[1, 1])
# src[] = { }
intrinsic("btd_retire_intel")