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nir: add nir_intrinsic_interp_deref_at_vertex

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From the SPV_AMD_shader_explicit_vertex_parameter extension:
   "Returns the value of the input <interpolant> without any
    interpolation, i.e. the raw output value of previous shader
    stage."

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3578>
This commit is contained in:
Samuel Pitoiset
2020-01-24 16:01:04 +01:00
committed by Marge Bot
parent 687f170311
commit d29f10a7ca
12 changed files with 34 additions and 13 deletions
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3
src/compiler/nir/nir_linking_helpers.c
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@@ -523,7 +523,8 @@ gather_varying_component_info(nir_shader *consumer,
if (intr->intrinsic != nir_intrinsic_load_deref &&
intr->intrinsic != nir_intrinsic_interp_deref_at_centroid &&
intr->intrinsic != nir_intrinsic_interp_deref_at_sample &&
intr->intrinsic != nir_intrinsic_interp_deref_at_offset)
intr->intrinsic != nir_intrinsic_interp_deref_at_offset &&
intr->intrinsic != nir_intrinsic_interp_deref_at_vertex)
continue;
nir_deref_instr *deref = nir_src_as_deref(intr->src[0]);