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nir: lower interp_deref_at_vertex to load_input_vertex

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This introduces a new NIR intrinsic for loading inputs at a specific
vertex index.

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
2020-01-27 11:34:00 +01:00
committed by Marge Bot
parent d29f10a7ca
commit cf6cae832c
3 changed files with 40 additions and 15 deletions
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6
src/compiler/nir/nir_divergence_analysis.c
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@@ -125,6 +125,11 @@ visit_intrinsic(bool *divergent, nir_intrinsic_instr *instr,
else
is_divergent = true;
break;
case nir_intrinsic_load_input_vertex:
is_divergent = divergent[instr->src[1].ssa->index];
assert(stage == MESA_SHADER_FRAGMENT);
is_divergent |= !(options & nir_divergence_single_prim_per_subgroup);
break;
case nir_intrinsic_load_output:
assert(stage == MESA_SHADER_TESS_CTRL || stage == MESA_SHADER_FRAGMENT);
is_divergent = divergent[instr->src[0].ssa->index];
@@ -264,6 +269,7 @@ visit_intrinsic(bool *divergent, nir_intrinsic_instr *instr,
case nir_intrinsic_load_barycentric_pixel:
case nir_intrinsic_load_barycentric_centroid:
case nir_intrinsic_load_barycentric_sample:
case nir_intrinsic_load_barycentric_model:
case nir_intrinsic_load_barycentric_at_sample:
case nir_intrinsic_load_barycentric_at_offset:
case nir_intrinsic_interp_deref_at_offset: