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spirv,nir: Add support for ray-tracing built-ins

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Missing in this commit are NIR intrinsics for the ObjectToWorld and
WorldToObject built-ins.  Those are matrices and so they take a bit more
work and justify a separate commit.  For now, we add the enums and leave
the SYSTEM_VALUE <-> nir_intrinsic conversion commented out.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6479>
This commit is contained in:
Jason Ekstrand
2020-05-13 13:56:03 -05:00
committed by Marge Bot
parent ed907e5d84
commit 46cd91bb45
5 changed files with 152 additions and 0 deletions
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14
src/compiler/nir/nir_intrinsics.py
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@@ -658,6 +658,20 @@ system_value("scratch_base_ptr", 0, bit_sizes=[32,64], indices=[BASE])
system_value("constant_base_ptr", 0, bit_sizes=[32,64])
system_value("shared_base_ptr", 0, bit_sizes=[32,64])
# System values for ray tracing.
system_value("ray_launch_id", 3)
system_value("ray_launch_size", 3)
system_value("ray_world_origin", 3)
system_value("ray_world_direction", 3)
system_value("ray_object_origin", 3)
system_value("ray_object_direction", 3)
system_value("ray_t_min", 1)
system_value("ray_t_max", 1)
system_value("ray_hit_kind", 1)
system_value("ray_flags", 1)
system_value("ray_geometry_index", 1)
system_value("ray_instance_custom_index", 1)
# Driver-specific viewport scale/offset parameters.
#
# VC4 and V3D need to emit a scaled version of the position in the vertex