From: Jason Ekstrand <jason.ekstrand@intel.com>
Date: Wed, 23 Aug 2017 02:58:59 +0000 (-0700)
Subject: nir: Make ballot intrinsics variable-size
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=3ee91ee6ac739f7ad4d5d4b066073efbeb511b41;p=mesa.git

nir: Make ballot intrinsics variable-size

This way they can return either a uvec4 or a uint64_t.  At the moment,
this is a no-op since we still always return a uint64_t.

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
---

diff --git a/src/compiler/glsl/glsl_to_nir.cpp b/src/compiler/glsl/glsl_to_nir.cpp
index a7dfe57636d..caea2ea3b2b 100644
--- a/src/compiler/glsl/glsl_to_nir.cpp
+++ b/src/compiler/glsl/glsl_to_nir.cpp
@@ -1165,6 +1165,7 @@ nir_visitor::visit(ir_call *ir)
       case nir_intrinsic_ballot: {
          nir_ssa_dest_init(&instr->instr, &instr->dest,
                            ir->return_deref->type->vector_elements, 64, NULL);
+         instr->num_components = ir->return_deref->type->vector_elements;
 
          ir_rvalue *value = (ir_rvalue *) ir->actual_parameters.get_head();
          instr->src[0] = nir_src_for_ssa(evaluate_rvalue(value));
diff --git a/src/compiler/nir/nir_intrinsics.h b/src/compiler/nir/nir_intrinsics.h
index bb8cfac6620..20bef339ac4 100644
--- a/src/compiler/nir/nir_intrinsics.h
+++ b/src/compiler/nir/nir_intrinsics.h
@@ -102,7 +102,7 @@ INTRINSIC(shader_clock, 0, ARR(0), true, 2, 0, 0, xx, xx, xx, NIR_INTRINSIC_CAN_
  *
  * GLSL functions from ARB_shader_ballot.
  */
-INTRINSIC(ballot, 1, ARR(1), true, 1, 0, 0, xx, xx, xx, NIR_INTRINSIC_CAN_ELIMINATE)
+INTRINSIC(ballot, 1, ARR(1), true, 0, 0, 0, xx, xx, xx, NIR_INTRINSIC_CAN_ELIMINATE)
 INTRINSIC(read_invocation, 2, ARR(0, 1), true, 0, 0, 0, xx, xx, xx, NIR_INTRINSIC_CAN_ELIMINATE)
 INTRINSIC(read_first_invocation, 1, ARR(0), true, 0, 0, 0, xx, xx, xx, NIR_INTRINSIC_CAN_ELIMINATE)
 
@@ -350,11 +350,11 @@ SYSTEM_VALUE(layer_id, 1, 0, xx, xx, xx)
 SYSTEM_VALUE(view_index, 1, 0, xx, xx, xx)
 SYSTEM_VALUE(subgroup_size, 1, 0, xx, xx, xx)
 SYSTEM_VALUE(subgroup_invocation, 1, 0, xx, xx, xx)
-SYSTEM_VALUE(subgroup_eq_mask, 1, 0, xx, xx, xx)
-SYSTEM_VALUE(subgroup_ge_mask, 1, 0, xx, xx, xx)
-SYSTEM_VALUE(subgroup_gt_mask, 1, 0, xx, xx, xx)
-SYSTEM_VALUE(subgroup_le_mask, 1, 0, xx, xx, xx)
-SYSTEM_VALUE(subgroup_lt_mask, 1, 0, xx, xx, xx)
+SYSTEM_VALUE(subgroup_eq_mask, 0, 0, xx, xx, xx)
+SYSTEM_VALUE(subgroup_ge_mask, 0, 0, xx, xx, xx)
+SYSTEM_VALUE(subgroup_gt_mask, 0, 0, xx, xx, xx)
+SYSTEM_VALUE(subgroup_le_mask, 0, 0, xx, xx, xx)
+SYSTEM_VALUE(subgroup_lt_mask, 0, 0, xx, xx, xx)
 SYSTEM_VALUE(subgroup_id, 1, 0, xx, xx, xx)
 
 /* Blend constant color values.  Float values are clamped. */
diff --git a/src/compiler/nir/nir_lower_system_values.c b/src/compiler/nir/nir_lower_system_values.c
index 39b1a260bd0..48c497ef411 100644
--- a/src/compiler/nir/nir_lower_system_values.c
+++ b/src/compiler/nir/nir_lower_system_values.c
@@ -126,6 +126,7 @@ convert_block(nir_block *block, nir_builder *b)
             nir_intrinsic_from_system_value(var->data.location);
          nir_intrinsic_instr *load = nir_intrinsic_instr_create(b->shader, op);
          nir_ssa_dest_init(&load->instr, &load->dest, 1, 64, NULL);
+         load->num_components = 1;
          nir_builder_instr_insert(b, &load->instr);
          sysval = &load->dest.ssa;
          break;