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intel/nir: use a single intel intrinsic to deal with ray traversal

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In the future we'll want to reuse this intrinsic to deal with ray
queries. Ray queries will use a different global pointer and
programmatically change the control/level arguments of the trace send
instruction.

v2: Comment on barrier after sync trace instruction (Caio)
    Generalize lsc helper (Caio)

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13719>
This commit is contained in:
Lionel Landwerlin
2021-06-14 17:30:31 +03:00
committed by Marge Bot
parent 39f6cd5d79
commit bb40e999d1
7 changed files with 121 additions and 44 deletions
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12
src/intel/compiler/brw_nir_rt.c
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@@ -294,7 +294,11 @@ lower_ray_walk_intrinsics(nir_shader *shader,
* optimization passes.
*/
nir_push_if(&b, nir_imm_true(&b));
nir_trace_ray_continue_intel(&b);
nir_trace_ray_intel(&b,
nir_load_btd_global_arg_addr_intel(&b),
nir_imm_int(&b, BRW_RT_BVH_LEVEL_OBJECT),
nir_imm_int(&b, GEN_RT_TRACE_RAY_CONTINUE),
.synchronous = false);
nir_jump(&b, nir_jump_halt);
nir_pop_if(&b, NULL);
progress = true;
@@ -313,7 +317,11 @@ lower_ray_walk_intrinsics(nir_shader *shader,
}
nir_push_else(&b, NULL);
{
nir_trace_ray_commit_intel(&b);
nir_trace_ray_intel(&b,
nir_load_btd_global_arg_addr_intel(&b),
nir_imm_int(&b, BRW_RT_BVH_LEVEL_OBJECT),
nir_imm_int(&b, GEN_RT_TRACE_RAY_COMMIT),
.synchronous = false);
nir_jump(&b, nir_jump_halt);
}
nir_pop_if(&b, NULL);