QSortPolicy: add Uniform sorting mode

We used to perform uniform minization between adjacent render commands all the time.
Since this can yield to a higher CPU usages (but more efficient rendering submission),
we now make this step optional.

[ChangeLog] QSortPolicy add Uniform mode (to control whether uniform minization
should be performed)

Change-Id: I5c0e0dba22400a9884ee1d75426fd76b073fdcb5
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/src/render/framegraph/qsortpolicy.cpp b/src/render/framegraph/qsortpolicy.cpp
index a24dd5eae..5c04025b0 100644
--- a/src/render/framegraph/qsortpolicy.cpp
+++ b/src/render/framegraph/qsortpolicy.cpp
@@ -98,12 +98,14 @@ QSortPolicyPrivate::QSortPolicyPrivate()
     projection of the camera-to-object-center vector onto the camera's view
     vector.
 
-    \value Material sort the objects based on their material value
+    \value Material sort the objects based on their material (shader) value.
 
     \value FrontToBack sort the objects from front to back. The opposite of
     BackToFront.
 
     \value [since 5.14] Texture sort the objects to minimize texture changes.
+
+    \value [since 5.15] Uniform sort the objects to minimize uniform changes.
 */
 
 /*!
@@ -123,10 +125,11 @@ QSortPolicyPrivate::QSortPolicyPrivate()
         order. More accurately, the sorting key is the z component of the
         projection of the camera-to-object-center vector onto the camera's view
         vector.
-    \li Material - sort the objects based on their material value
+    \li Material - sort the objects based on their material (shader) value.
     \li FrontToBack - sort the objects from front to back. The opposite of
         BackToFront.
     \li [since 5.14] Texture - sort the objects to minimize texture changes.
+    \li [since 5.15] Uniform - sort the objects to minimize uniform changes.
     \endlist
 */