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nir: Add new launch_mesh_workgroups intrinsic.

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The new intrinsic launches mesh shader workgroups
from a task shader, with explicit task_payload.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Marcin Ślusarz <marcin.slusarz@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16720>
This commit is contained in:
Timur Kristóf 2022-05-26 13:24:58 +02:00 • committed by Marge Bot
parent c9f0a511e0
commit 9eaf918ed2
1 changed files with 13 additions and 0 deletions
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13
src/compiler/nir/nir_intrinsics.py
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@ -487,6 +487,19 @@ intrinsic("end_primitive_with_counter", src_comp=[1, 1], indices=[STREAM_ID])
# Contains the final total vertex and primitive counts in the current GS thread.
intrinsic("set_vertex_and_primitive_count", src_comp=[1, 1], indices=[STREAM_ID])
# Launches mesh shader workgroups from a task shader, with explicit task_payload.
# Rules:
# - This is a terminating instruction.
# - May only occur in workgroup-uniform control flow.
# - Dispatch sizes may be divergent (in which case the values
# from the first invocation are used).
# Meaning of indices:
# - BASE: address of the task_payload variable used.
# - RANGE: size of the task_payload variable used.
#
# src[] = {vec(x, y, z)}
intrinsic("launch_mesh_workgroups", src_comp=[3], indices=[BASE, RANGE])
# Trace a ray through an acceleration structure
#
# This instruction has a lot of parameters: