"flat centroid" and "flat sample" both just mean "flat", so we should ignore interpolateAtCentroid/Sample and just return the flat value.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97032 Signed-off-by: Kenneth Graunke <kenn...@whitecape.org> --- src/compiler/nir/nir_lower_io.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/src/compiler/nir/nir_lower_io.c b/src/compiler/nir/nir_lower_io.c index bf8296f..b36836f 100644 --- a/src/compiler/nir/nir_lower_io.c +++ b/src/compiler/nir/nir_lower_io.c @@ -340,6 +340,10 @@ lower_interpolate_at(nir_intrinsic_instr *intrin, struct lower_io_state *state, assert(var->data.mode == nir_var_shader_in); + /* Ignore interpolateAt() for flat variables - flat is flat. */ + if (var->data.interpolation == INTERP_MODE_FLAT) + return lower_load(intrin, state, NULL, offset); + nir_intrinsic_op bary_op; switch (intrin->intrinsic) { case nir_intrinsic_interp_var_at_centroid: -- 2.9.0 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
