update version for new release

This avoids a feature summary in the middle of the cmake configuration
when this module is used as a git submodule.

GIT_SILENT

CMakeLists.txt

@@ -3,7 +3,7 @@ cmake_minimum_required(VERSION 3.16)
 project(KImageFormats)
 
 include(FeatureSummary)
-find_package(ECM 5.248.0  NO_MODULE)
+find_package(ECM 6.0.0  NO_MODULE)
 set_package_properties(ECM PROPERTIES TYPE REQUIRED DESCRIPTION "Extra CMake Modules." URL "https://commits.kde.org/extra-cmake-modules")
 feature_summary(WHAT REQUIRED_PACKAGES_NOT_FOUND FATAL_ON_MISSING_REQUIRED_PACKAGES)
 
@@ -91,6 +91,7 @@ if (BUILD_TESTING)
     add_subdirectory(tests)
 endif()
 
-feature_summary(WHAT ALL FATAL_ON_MISSING_REQUIRED_PACKAGES)
+include(ECMFeatureSummary)
+ecm_feature_summary(WHAT ALL FATAL_ON_MISSING_REQUIRED_PACKAGES)
 
 kde_configure_git_pre_commit_hook(CHECKS CLANG_FORMAT)

src/imageformats/scanlineconverter.cpp

@@ -73,12 +73,20 @@ const uchar *ScanLineConverter::convertedScanLine(const QImage &image, qint32 y)
             cs = _defaultColorSpace;
         }
         if (tmp.depth() < 24) {
-            tmp = tmp.convertToFormat(tmp.hasAlphaChannel() ? QImage::Format_ARGB32 : QImage::Format_RGB32);
+            tmp.convertTo(tmp.hasAlphaChannel() ? QImage::Format_ARGB32 : QImage::Format_RGB32);
         }
         tmp.setColorSpace(cs);
         tmp.convertToColorSpace(_colorSpace);
     }
-    _convBuffer = tmp.convertToFormat(_targetFormat);
+
+    /*
+     * Work Around for wrong RGBA64 -> 16FPx4/32FPx4 conversion on Intel architecture.
+     * Luckily convertTo() works fine with 16FPx4 images so I can use it instead convertToFormat().
+     * See also: https://bugreports.qt.io/browse/QTBUG-120614
+     */
+    tmp.convertTo(_targetFormat);
+    _convBuffer = tmp;
+
     if (_convBuffer.isNull()) {
         return nullptr;
     }