Merge remote-tracking branch 'origin/5.14.0' into 5.14

Change-Id: I737802a3333b678ed5385faf22436c211fe6ed44

Author: Qt Forward Merge Bot

dist/changes-5.14.0

@@ -0,0 +1,18 @@
+Qt 5.14 introduces many new features and improvements as well as bugfixes
+over the 5.13.x series. For more details, refer to the online documentation
+included in this distribution. The documentation is also available online:
+
+https://doc.qt.io/qt-5/index.html
+
+The Qt version 5.14 series is binary compatible with the 5.13.x series.
+Applications compiled for 5.13 will continue to run with 5.14.
+
+Some of the changes listed in this file include issue tracking numbers
+corresponding to tasks in the Qt Bug Tracker:
+
+https://bugreports.qt.io/
+
+Each of these identifiers can be entered in the bug tracker to obtain more
+information about a particular change.
+
+ - This release contains only minor code improvements.

src/plugins/platforms/webgl/qwebglcontext.cpp

@@ -147,7 +147,7 @@ inline int imageSize(GLsizei width, GLsizei height, GLenum format, GLenum type,
         { GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, 2 },
         { GL_RGB, GL_UNSIGNED_BYTE, 3 },
         { GL_RGB, GL_UNSIGNED_SHORT_5_6_5, 2 },
-        { GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, 1 },
+        { GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, 2 },
         { GL_LUMINANCE, GL_UNSIGNED_BYTE, 1 },
         { GL_ALPHA, GL_UNSIGNED_BYTE, 1 },