[gtk+/wip/otte/shader: 109/150] gskslvariable: Add load()/store() functions

[Benjamin Otte <otte src gnome org>]

commit 92b7a84285df6ecde36a3b9a732d7f2ddadb1fef
Author: Benjamin Otte <otte redhat com>
Date:   Tue Oct 10 01:18:44 2017 +0200

    gskslvariable: Add load()/store() functions
    
    This allows transitioning variables to different types. Which in the end
    makes it possible to write different load/store code for parameters,
    global variables or potentially GL builtins.

 gsk/gskslexpression.c      |    5 +----
 gsk/gskslstatement.c       |    7 +++----
 gsk/gskslvariable.c        |   23 +++++++++++++++++++++++
 gsk/gskslvariableprivate.h |    5 +++++
 4 files changed, 32 insertions(+), 8 deletions(-)
---
diff --git a/gsk/gskslexpression.c b/gsk/gskslexpression.c
index edd0f13..e8abf0a 100644
--- a/gsk/gskslexpression.c
+++ b/gsk/gskslexpression.c
@@ -363,10 +363,7 @@ gsk_sl_expression_reference_write_spv (const GskSlExpression *expression,
 {
   GskSlExpressionReference *reference = (GskSlExpressionReference *) expression;
 
-  return gsk_spv_writer_load (writer,
-                              gsk_sl_variable_get_type (reference->variable),
-                              gsk_spv_writer_get_id_for_variable (writer, reference->variable),
-                              0);
+  return gsk_sl_variable_load_spv (reference->variable, writer);
 }
 
 static GskSpvAccessChain *
diff --git a/gsk/gskslstatement.c b/gsk/gskslstatement.c
index 9119592..b9d5814 100644
--- a/gsk/gskslstatement.c
+++ b/gsk/gskslstatement.c
@@ -239,10 +239,9 @@ gsk_sl_statement_declaration_write_spv (const GskSlStatement *statement,
 
   if (declaration->initial && ! gsk_sl_variable_get_initial_value (declaration->variable))
     {
-      gsk_spv_writer_store (writer,
-                            gsk_spv_writer_get_id_for_variable (writer, declaration->variable),
-                            gsk_sl_expression_write_spv (declaration->initial, writer),
-                            0);
+      gsk_sl_variable_store_spv (declaration->variable,
+                                 writer,
+                                 gsk_sl_expression_write_spv (declaration->initial, writer));
     }
 }
 
diff --git a/gsk/gskslvariable.c b/gsk/gskslvariable.c
index ee81141..f053a3e 100644
--- a/gsk/gskslvariable.c
+++ b/gsk/gskslvariable.c
@@ -182,3 +182,26 @@ gsk_sl_variable_write_spv (const GskSlVariable *variable,
 
   return result_id;
 }
+
+guint32
+gsk_sl_variable_load_spv (GskSlVariable *variable,
+                          GskSpvWriter  *writer)
+{
+  return gsk_spv_writer_load (writer,
+                              gsk_sl_variable_get_type (variable),
+                              gsk_spv_writer_get_id_for_variable (writer, variable),
+                              0);
+}
+
+void
+gsk_sl_variable_store_spv (GskSlVariable *variable,
+                           GskSpvWriter  *writer,
+                           guint32        value)
+{
+  gsk_spv_writer_store (writer,
+                        gsk_spv_writer_get_id_for_variable (writer, variable),
+                        value,
+                        0);
+
+}
+
diff --git a/gsk/gskslvariableprivate.h b/gsk/gskslvariableprivate.h
index f60b3c5..d414ad6 100644
--- a/gsk/gskslvariableprivate.h
+++ b/gsk/gskslvariableprivate.h
@@ -44,6 +44,11 @@ gboolean                gsk_sl_variable_is_constant             (const GskSlVari
 
 guint32                 gsk_sl_variable_write_spv               (const GskSlVariable    *variable,
                                                                  GskSpvWriter           *writer);
+guint32                 gsk_sl_variable_load_spv                (GskSlVariable          *variable,
+                                                                 GskSpvWriter           *writer);
+void                    gsk_sl_variable_store_spv               (GskSlVariable          *variable,
+                                                                 GskSpvWriter           *writer,
+                                                                 guint32                 value);
 
 G_END_DECLS