D3D12: Add mipmaps and smooth texture material

The smooth material is requested by antialiasing: true. This is
not the same as setting smooth: true which changes the filtering.

Mipmap support is only available for power-of-two textures for now.
Others will get scaled.

In addition, texture releases are now properly deferred and unnecessary
Wait() calls are avoided.

Change-Id: Ib9d909b1c4e2158564ab8bcfb933c088cf0da239
Reviewed-by: Andy Nichols <andy.nichols@theqtcompany.com>

1 files changed, 18 insertions, 1 deletions

diff --git a/tests/manual/nodetypes/Images.qml b/tests/manual/nodetypes/Images.qml
index 34badcdb4b..f37ed1217b 100644
--- a/tests/manual/nodetypes/Images.qml
+++ b/tests/manual/nodetypes/Images.qml
@@ -38,7 +38,7 @@
 **
 ****************************************************************************/
 
-import QtQuick 2.0
+import QtQuick 2.3
 
 Item {
     Rectangle {
@@ -50,11 +50,28 @@ Item {
     }
 
     Image {
+        id: im
         source: "qrc:/qt.png"
+        mipmap: true
+
+        // changing the mipmap property results in the creation of a brand new
+        // texture resource. enable the following to test.
+//        Timer {
+//            interval: 5000
+//            onTriggered: im.mipmap = false
+//            running: true
+//        }
 
         Image {
             anchors.centerIn: parent
             source: "qrc:/face-smile.png"
         }
     }
+
+    Image {
+        source: "qrc:/face-smile.png"
+        anchors.bottom: parent.bottom
+        anchors.right: parent.right
+        antialiasing: true
+    }
 }