From a1bc1523408a305b14a8c297ea93a28bb12cee5d Mon Sep 17 00:00:00 2001
From: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Date: Fri, 5 Oct 2018 14:39:01 +0200
Subject: [PATCH] spirv: mark variables decorated with XfbBuffer as always
 active

Otherwise, they are removed during NIR linking or in some
lowering passes.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
---
 src/compiler/spirv/vtn_variables.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/compiler/spirv/vtn_variables.c b/src/compiler/spirv/vtn_variables.c
index 358ff4bef7a..636fdb8689a 100644
--- a/src/compiler/spirv/vtn_variables.c
+++ b/src/compiler/spirv/vtn_variables.c
@@ -1326,6 +1326,7 @@ apply_var_decoration(struct vtn_builder *b,
    case SpvDecorationXfbBuffer:
       var_data->explicit_xfb_buffer = true;
       var_data->xfb_buffer = dec->literals[0];
+      var_data->always_active_io = true;
       break;
    case SpvDecorationXfbStride:
       var_data->explicit_xfb_stride = true;
-- 
2.30.2