From: Jason Ekstrand <jason.ekstrand@intel.com>
Date: Wed, 23 Dec 2015 19:10:13 +0000 (-0800)
Subject: nir/spirv: Do boolean fixup on block loads
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=3ab1b7afa8fd59ada577573954830a409a667bc4;p=mesa.git

nir/spirv: Do boolean fixup on block loads

We used to do it for variable loads on things of type "uniform" but that
never got ported to block loads.
---

diff --git a/src/glsl/nir/spirv_to_nir.c b/src/glsl/nir/spirv_to_nir.c
index 23c2c481153..1afa7eba5a9 100644
--- a/src/glsl/nir/spirv_to_nir.c
+++ b/src/glsl/nir/spirv_to_nir.c
@@ -1168,7 +1168,16 @@ _vtn_block_load(struct vtn_builder *b, nir_intrinsic_op op,
 
       nir_ssa_dest_init(&load->instr, &load->dest, load->num_components, NULL);
       nir_builder_instr_insert(&b->nb, &load->instr);
-      val->def = &load->dest.ssa;
+
+      if (glsl_get_base_type(type->type) == GLSL_TYPE_BOOL) {
+         /* Loads of booleans from externally visible memory need to be
+          * fixed up since they're defined to be zero/nonzero rather than
+          * NIR_FALSE/NIR_TRUE.
+          */
+         val->def = nir_ine(&b->nb, &load->dest.ssa, nir_imm_int(&b->nb, 0));
+      } else {
+         val->def = &load->dest.ssa;
+      }
    } else {
       unsigned elems = glsl_get_length(type->type);
       val->elems = ralloc_array(b, struct vtn_ssa_value *, elems);