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intel/brw: Skip per-primitive inputs when computing flat input mask

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The per-primitive have their own separate section in the FS thread
payload, and are not considered when setting the mask in
3STATE_SBE's ConstantInterpolationEnable.

This is also consistent with what is done for brw_interp_reg().

Fixes
- dEQP-VK.mesh_shader.ext.misc.clip_geom_provoking_last
- dEQP-VK.mesh_shader.ext.misc.clip_geom_and_task_shader_provoking_last

Backport-to: 24.2
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/11844
Reviewed-by: Ivan Briano <ivan.briano@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31417>
This commit is contained in:
Caio Oliveira 2024-09-26 18:59:31 -07:00 • committed by Marge Bot
parent cc66268817
commit 93c3780bc1
1 changed files with 3 additions and 1 deletions
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4
src/intel/compiler/brw_compile_fs.cpp
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@ -1014,6 +1014,8 @@ brw_compute_flat_inputs(struct brw_wm_prog_data *prog_data,
{
prog_data->flat_inputs = 0;
const unsigned per_vertex_start = prog_data->num_per_primitive_inputs;
nir_foreach_shader_in_variable(var, shader) {
/* flat shading */
if (var->data.interpolation != INTERP_MODE_FLAT)
@ -1024,7 +1026,7 @@ brw_compute_flat_inputs(struct brw_wm_prog_data *prog_data,
unsigned slots = glsl_count_attribute_slots(var->type, false);
for (unsigned s = 0; s < slots; s++) {
int input_index = prog_data->urb_setup[var->data.location + s];
int input_index = prog_data->urb_setup[var->data.location + s] - per_vertex_start;
if (input_index >= 0)
prog_data->flat_inputs |= 1 << input_index;