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nir: consider push constant loads as always dynamically uniform

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Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12444>
This commit is contained in:
Rhys Perry 2021-08-18 11:02:21 +01:00 • committed by Marge Bot
parent a3110c308f
commit 884ac52eaa
1 changed files with 7 additions and 1 deletions
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8
src/compiler/nir/nir.c
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@ -1355,12 +1355,18 @@ nir_src_is_dynamically_uniform(nir_src src)
if (src.ssa->parent_instr->type == nir_instr_type_load_const)
return true;
/* As are uniform variables */
if (src.ssa->parent_instr->type == nir_instr_type_intrinsic) {
nir_intrinsic_instr *intr = nir_instr_as_intrinsic(src.ssa->parent_instr);
/* As are uniform variables */
if (intr->intrinsic == nir_intrinsic_load_uniform &&
nir_src_is_dynamically_uniform(intr->src[0]))
return true;
/* Push constant loads always use uniform offsets. */
if (intr->intrinsic == nir_intrinsic_load_push_constant)
return true;
if (intr->intrinsic == nir_intrinsic_load_deref &&
nir_deref_mode_is(nir_src_as_deref(intr->src[0]), nir_var_mem_push_const))
return true;
}
/* Operating together dynamically uniform expressions produces a