Fix grayscale painting regression in 64-bit raster engine

A new define for better vectorized compositioning had a mistake that
caused some sources to be converted to grayscale when composited.

Added two 10 bit per channel formats to the lancelot test to catch
regressions in the future.

Change-Id: I1c468e6b93d68185e517fc0d44c6c927f9f7135f
Reviewed-by: Erik Verbruggen <erik.verbruggen@qt.io>

1 files changed, 28 insertions, 0 deletions

diff --git a/tests/auto/other/lancelot/tst_lancelot.cpp b/tests/auto/other/lancelot/tst_lancelot.cpp
index 3f35712489..eb575a88ea 100644
--- a/tests/auto/other/lancelot/tst_lancelot.cpp
+++ b/tests/auto/other/lancelot/tst_lancelot.cpp
@@ -71,6 +71,10 @@ private slots:
     void testRasterRGB32();
     void testRasterRGB16_data();
     void testRasterRGB16();
+    void testRasterA2RGB30PM_data();
+    void testRasterA2RGB30PM();
+    void testRasterBGR30_data();
+    void testRasterBGR30();
 
 #ifndef QT_NO_OPENGL
     void testOpenGL_data();
@@ -150,6 +154,30 @@ void tst_Lancelot::testRasterRGB16()
 }
 
 
+void tst_Lancelot::testRasterA2RGB30PM_data()
+{
+    setupTestSuite();
+}
+
+
+void tst_Lancelot::testRasterA2RGB30PM()
+{
+    runTestSuite(Raster, QImage::Format_A2RGB30_Premultiplied);
+}
+
+
+void tst_Lancelot::testRasterBGR30_data()
+{
+    setupTestSuite();
+}
+
+
+void tst_Lancelot::testRasterBGR30()
+{
+    runTestSuite(Raster, QImage::Format_BGR30);
+}
+
+
 #ifndef QT_NO_OPENGL
 bool tst_Lancelot::checkSystemGLSupport()
 {