[cogl] progend-glsl: dirty prog for vertex state changes

[Robert Bragg <rbragg src gnome org>]

commit 957e3d050624c224f1b46c20674df4922ffdadee
Author: Robert Bragg <robert linux intel com>
Date:   Sat Jan 19 15:36:25 2013 +0000

    progend-glsl: dirty prog for vertex state changes
    
    _cogl_pipeline_progend_glsl_pre_change_notify and
    _cogl_pipeline_progend_glsl_layer_pre_change_notify were only dirtying
    the current program state for changes related to fragment processing.
    
    This make both functions also check for changes that affect vertex
    shader codegen.
    
    This also fixes a mistake where
    _cogl_pipeline_progend_glsl_layer_pre_change_notify was checking for
    non-layer related changes which would never be seen, and instead it
    should be checking for layer based changes only.
    
    (cherry picked from commit efc48edb6fc59b12c252856c7263e562f4eb1777)

 cogl/driver/gl/cogl-pipeline-progend-glsl.c |   14 ++++++++------
 1 files changed, 8 insertions(+), 6 deletions(-)
---
diff --git a/cogl/driver/gl/cogl-pipeline-progend-glsl.c b/cogl/driver/gl/cogl-pipeline-progend-glsl.c
index fd3c4d6..c4e4bc2 100644
--- a/cogl/driver/gl/cogl-pipeline-progend-glsl.c
+++ b/cogl/driver/gl/cogl-pipeline-progend-glsl.c
@@ -756,8 +756,11 @@ _cogl_pipeline_progend_glsl_pre_change_notify (CoglPipeline *pipeline,
 {
   _COGL_GET_CONTEXT (ctx, NO_RETVAL);
 
-  if ((change & _cogl_pipeline_get_state_for_fragment_codegen (ctx)))
-    dirty_program_state (pipeline);
+  if ((change & (_cogl_pipeline_get_state_for_fragment_codegen (ctx) |
+                 COGL_PIPELINE_STATE_AFFECTS_VERTEX_CODEGEN)))
+    {
+      dirty_program_state (pipeline);
+    }
   else
     {
       int i;
@@ -792,13 +795,12 @@ _cogl_pipeline_progend_glsl_layer_pre_change_notify (
 {
   _COGL_GET_CONTEXT (ctx, NO_RETVAL);
 
-  if ((change & _cogl_pipeline_get_state_for_fragment_codegen (ctx)))
+  if ((change & (_cogl_pipeline_get_layer_state_for_fragment_codegen (ctx) |
+                 COGL_PIPELINE_LAYER_STATE_AFFECTS_VERTEX_CODEGEN)))
     {
       dirty_program_state (owner);
-      return;
     }
-
-  if (change & COGL_PIPELINE_LAYER_STATE_COMBINE_CONSTANT)
+  else if (change & COGL_PIPELINE_LAYER_STATE_COMBINE_CONSTANT)
     {
       CoglPipelineProgramState *program_state = get_program_state (owner);
       if (program_state)