glsl: yet another swizzled expression fix

This fixes swizzled conditional expressions such "(b ? p : q).x"

(cherry picked from master, commit 00f0b05d5f14256213f744c3b8e4ce82611e0ba1)

1 files changed, 5 insertions, 2 deletions

diff --git a/src/mesa/shader/slang/slang_emit.c b/src/mesa/shader/slang/slang_emit.c
index db78dbeef6b..80ccc79eb9b 100644
--- a/src/mesa/shader/slang/slang_emit.c
+++ b/src/mesa/shader/slang/slang_emit.c
@@ -1838,8 +1838,11 @@ emit_swizzle(slang_emit_info *emitInfo, slang_ir_node *n)
 
    inst = emit(emitInfo, n->Children[0]);
 
-   assert(n->Children[0]->Store == n->Store->Parent);
-   assert(n->Store->Parent);
+   if (!n->Store->Parent) {
+      /* this covers a case such as "(b ? p : q).x" */
+      n->Store->Parent = n->Children[0]->Store;
+      assert(n->Store->Parent);
+   }
 
    {
       const GLuint swizzle = n->Store->Swizzle;