glsl: handle varyings that are not written to but have an xfb_offset

Reviewed-by: Dave Airlie <airlied@redhat.com>
2016-03-14 10:32:17 +11:00
parent d5c09d40b9
commit c95e92b14d
2 changed files with 32 additions and 10 deletions
--- a/src/compiler/glsl/link_varyings.h
+++ b/src/compiler/glsl/link_varyings.h
@@ -108,6 +108,14 @@ public:
      return this->next_buffer_separator;
   }

+   bool is_varying_written() const
+   {
+      if (this->next_buffer_separator || this->skip_components)
+         return false;
+
+      return this->matched_candidate->toplevel_var->data.assigned;
+   }
+
   bool is_varying() const
   {
      return !this->next_buffer_separator && !this->skip_components;