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zink: handle struct derefs in ntv

Browse source 
Erik Faye-Lund <erik.faye-lund@collabora.com>

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8142>
This commit is contained in:
Mike Blumenkrantz 2020-07-23 07:47:14 -04:00 • committed by Marge Bot
parent d4748913fc
commit 02fd562e65
1 changed files with 26 additions and 0 deletions
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26
src/gallium/drivers/zink/nir_to_spirv/nir_to_spirv.c
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@ -2177,6 +2177,28 @@ emit_deref_array(struct ntv_context *ctx, nir_deref_instr *deref)
store_dest(ctx, &deref->dest, result, nir_type_uint);
}
static void
emit_deref_struct(struct ntv_context *ctx, nir_deref_instr *deref)
{
assert(deref->deref_type == nir_deref_type_struct);
nir_variable *var = nir_deref_instr_get_variable(deref);
SpvStorageClass storage_class = get_storage_class(var);
SpvId index = emit_uint_const(ctx, 32, deref->strct.index);
SpvId ptr_type = spirv_builder_type_pointer(&ctx->builder,
storage_class,
get_glsl_type(ctx, deref->type));
SpvId result = spirv_builder_emit_access_chain(&ctx->builder,
ptr_type,
get_src(ctx, &deref->parent),
&index, 1);
/* uint is a bit of a lie here, it's really just an opaque type */
store_dest(ctx, &deref->dest, result, nir_type_uint);
}
static void
emit_deref(struct ntv_context *ctx, nir_deref_instr *deref)
{
@ -2189,6 +2211,10 @@ emit_deref(struct ntv_context *ctx, nir_deref_instr *deref)
emit_deref_array(ctx, deref);
break;
case nir_deref_type_struct:
emit_deref_struct(ctx, deref);
break;
default:
unreachable("unexpected deref_type");
}