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nir: Clean up divergence analysis for TES patch input loads.

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Just make the code a little bit easier to follow.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27680>
This commit is contained in:
Timur Kristóf
2024-02-08 11:32:55 +01:00
committed by Marge Bot
parent 870a2e4197
commit cc1501628f
1 changed files with 9 additions and 10 deletions
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19
src/compiler/nir/nir_divergence_analysis.c
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@@ -252,18 +252,17 @@ visit_intrinsic(nir_shader *shader, nir_intrinsic_instr *instr,
case nir_intrinsic_load_input:
is_divergent = instr->src[0].ssa->divergent;
/* Patch input loads are uniform between vertices of the same
* primitive.
*/
if (vertex_divergence && stage == MESA_SHADER_TESS_EVAL)
break;
if (stage == MESA_SHADER_FRAGMENT)
if (stage == MESA_SHADER_FRAGMENT) {
is_divergent |= !(options & nir_divergence_single_prim_per_subgroup);
else if (stage == MESA_SHADER_TESS_EVAL)
is_divergent |= !(options & nir_divergence_single_patch_per_tes_subgroup);
else
} else if (stage == MESA_SHADER_TESS_EVAL) {
/* Patch input loads are uniform between vertices of the same primitive. */
if (vertex_divergence)
is_divergent = false;
else
is_divergent |= !(options & nir_divergence_single_patch_per_tes_subgroup);
} else {
is_divergent = true;
}
break;
case nir_intrinsic_load_per_vertex_input:
is_divergent = instr->src[0].ssa->divergent ||