nir: Remove deref chain support from opt_undef

[mesa.git] / src / compiler / nir / nir_lower_wpos_center.c

diff --git a/src/compiler/nir/nir_lower_wpos_center.c b/src/compiler/nir/nir_lower_wpos_center.c
index dca810d735e793403272a363c15200cde85d485a..26f2b5d165f68ffc1993674832768e5faa271ad8 100644 (file)
--- a/src/compiler/nir/nir_lower_wpos_center.c
+++ b/src/compiler/nir/nir_lower_wpos_center.c
@@ -81,14 +81,14 @@ lower_wpos_center_block(nir_builder *b, nir_block *block,
    nir_foreach_instr(instr, block) {
       if (instr->type == nir_instr_type_intrinsic) {
          nir_intrinsic_instr *intr = nir_instr_as_intrinsic(instr);
-         if (intr->intrinsic == nir_intrinsic_load_var) {
-            nir_deref_var *dvar = intr->variables[0];
-            nir_variable *var = dvar->var;
+         if (intr->intrinsic == nir_intrinsic_load_deref) {
+            nir_deref_instr *deref = nir_src_as_deref(intr->src[0]);
+            nir_variable *var = nir_deref_instr_get_variable(deref);
 
             if (var->data.mode == nir_var_shader_in &&
                 var->data.location == VARYING_SLOT_POS) {
                /* gl_FragCoord should not have array/struct derefs: */
-               assert(dvar->deref.child == NULL);
+               assert(deref->deref_type == nir_deref_type_var);
                update_fragcoord(b, intr, for_sample_shading);
                progress = true;
             }
@@ -107,6 +107,8 @@ nir_lower_wpos_center(nir_shader *shader, const bool for_sample_shading)
 
    assert(shader->info.stage == MESA_SHADER_FRAGMENT);
 
+   nir_assert_unlowered_derefs(shader, nir_lower_load_store_derefs);
+
    nir_foreach_function(function, shader) {
       if (function->impl) {
          nir_builder_init(&b, function->impl);