[Mesa-dev] [PATCH 1/2] glsl: mark packed varyings during lower_packed_varyings

[Tapani Pälli]

This makes it easier and faster to identify a packed varying in
shader queries.

Signed-off-by: Tapani Pälli <tapani.palli at intel.com>
---
 src/glsl/ir.h                      | 5 +++++
 src/glsl/lower_packed_varyings.cpp | 2 ++
 2 files changed, 7 insertions(+)

diff --git a/src/glsl/ir.h b/src/glsl/ir.h
index 43a2bf0..d33d67e 100644
--- a/src/glsl/ir.h
+++ b/src/glsl/ir.h
@@ -791,6 +791,11 @@ public:
        */
       unsigned from_ssbo_unsized_array:1; /**< unsized array buffer variable. */
 
+      /** If set, variable is packed along with other variables in a
+       * single varying slot.
+       */
+      unsigned is_packed_varying:1;
+
       /**
        * Emit a warning if this variable is accessed.
        */
diff --git a/src/glsl/lower_packed_varyings.cpp b/src/glsl/lower_packed_varyings.cpp
index 5d66ca9..79b6d0e 100644
--- a/src/glsl/lower_packed_varyings.cpp
+++ b/src/glsl/lower_packed_varyings.cpp
@@ -278,6 +278,8 @@ lower_packed_varyings_visitor::run(struct gl_shader *shader)
       if (!shader->packed_varyings)
          shader->packed_varyings = new (shader) exec_list;
 
+      var->data.is_packed_varying = 1;
+
       shader->packed_varyings->push_tail(var->clone(shader, NULL));
 
       /* Change the old varying into an ordinary global. */
-- 
2.4.3