Move QOpenGLPaintEngine and related classes from QtGui to QtOpenGL

Also moves the openglwindow test to the opengl folder, as it makes use of these
classes.

Task-number: QTBUG-74409
Change-Id: Id9f0013cedcc8bd1e87122c005641d7298525045
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>

43 files changed, 90 insertions, 91 deletions

diff --git a/examples/gui/gui.pro b/examples/gui/gui.pro
index b8080c2075..275adc804d 100644
--- a/examples/gui/gui.pro
+++ b/examples/gui/gui.pro
@@ -6,5 +6,3 @@ CONFIG += no_docs_target
 
 SUBDIRS += analogclock
 SUBDIRS += rasterwindow
-qtHaveModule(gui):qtConfig(opengl): \
-    SUBDIRS += openglwindow
diff --git a/examples/opengl/opengl.pro b/examples/opengl/opengl.pro
index 89b3e1d86e..74c39a1e27 100644
--- a/examples/opengl/opengl.pro
+++ b/examples/opengl/opengl.pro
@@ -2,6 +2,7 @@ TEMPLATE      = subdirs
 
 SUBDIRS = hellowindow \
           paintedwindow \
+          openglwindow \
           qopenglwindow
 
 qtHaveModule(widgets) {
diff --git a/examples/gui/openglwindow/main.cpp b/examples/opengl/openglwindow/main.cpp
index 03a6ece06f..03a6ece06f 100644
--- a/examples/gui/openglwindow/main.cpp
+++ b/examples/opengl/openglwindow/main.cpp
diff --git a/examples/gui/openglwindow/openglwindow.cpp b/examples/opengl/openglwindow/openglwindow.cpp
index bac887dca0..bac887dca0 100644
--- a/examples/gui/openglwindow/openglwindow.cpp
+++ b/examples/opengl/openglwindow/openglwindow.cpp
diff --git a/examples/gui/openglwindow/openglwindow.h b/examples/opengl/openglwindow/openglwindow.h
index 8db943ddde..8db943ddde 100644
--- a/examples/gui/openglwindow/openglwindow.h
+++ b/examples/opengl/openglwindow/openglwindow.h
diff --git a/examples/gui/openglwindow/openglwindow.pri b/examples/opengl/openglwindow/openglwindow.pri
index 45b0b0cd29..30320df3b7 100644
--- a/examples/gui/openglwindow/openglwindow.pri
+++ b/examples/opengl/openglwindow/openglwindow.pri
@@ -1,3 +1,4 @@
+QT += opengl
 INCLUDEPATH += $$PWD
 SOURCES += $$PWD/openglwindow.cpp
 HEADERS += $$PWD/openglwindow.h
diff --git a/examples/gui/openglwindow/openglwindow.pro b/examples/opengl/openglwindow/openglwindow.pro
index 93f18f3d3f..8b1ae71c14 100644
--- a/examples/gui/openglwindow/openglwindow.pro
+++ b/examples/opengl/openglwindow/openglwindow.pro
@@ -3,5 +3,5 @@ include(openglwindow.pri)
 SOURCES += \
     main.cpp
 
-target.path = $$[QT_INSTALL_EXAMPLES]/gui/openglwindow
+target.path = $$[QT_INSTALL_EXAMPLES]/opengl/openglwindow
 INSTALLS += target
diff --git a/examples/opengl/paintedwindow/paintedwindow.pro b/examples/opengl/paintedwindow/paintedwindow.pro
index 1846aa4049..569eebe674 100644
--- a/examples/opengl/paintedwindow/paintedwindow.pro
+++ b/examples/opengl/paintedwindow/paintedwindow.pro
@@ -1,3 +1,5 @@
+QT += opengl
+
 HEADERS += paintedwindow.h
 SOURCES += paintedwindow.cpp main.cpp
 
diff --git a/examples/widgets/painting/shared/arthurwidgets.cpp b/examples/widgets/painting/shared/arthurwidgets.cpp
index c7c851270b..e24130e464 100644
--- a/examples/widgets/painting/shared/arthurwidgets.cpp
+++ b/examples/widgets/painting/shared/arthurwidgets.cpp
@@ -62,8 +62,8 @@
 #include <QRegularExpression>
 #include <QOffscreenSurface>
 #include <QOpenGLContext>
-#include <QOpenGLPaintDevice>
 #if QT_CONFIG(opengl)
+#include <QtOpenGL/QOpenGLPaintDevice>
 #include <QtOpenGL/QOpenGLWindow>
 #endif
 
diff --git a/examples/widgets/windowcontainer/windowcontainer.cpp b/examples/widgets/windowcontainer/windowcontainer.cpp
index b920c85420..f7c146e2a9 100644
--- a/examples/widgets/windowcontainer/windowcontainer.cpp
+++ b/examples/widgets/windowcontainer/windowcontainer.cpp
@@ -60,7 +60,7 @@
 #include <QWidget>
 
 
-// Making use of the class from the opengl example in gui.
+// Making use of the class from the openglwindow example
 class Window : public OpenGLWindow
 {
     Q_OBJECT
diff --git a/examples/widgets/windowcontainer/windowcontainer.pro b/examples/widgets/windowcontainer/windowcontainer.pro
index 9ac7e4a5ab..664ac938a2 100644
--- a/examples/widgets/windowcontainer/windowcontainer.pro
+++ b/examples/widgets/windowcontainer/windowcontainer.pro
@@ -6,4 +6,4 @@ QT += widgets
 target.path = $$[QT_INSTALL_EXAMPLES]/widgets/windowcontainer
 INSTALLS += target
 
-include(../../gui/openglwindow/openglwindow.pri)
+include(../../opengl/openglwindow/openglwindow.pri)
diff --git a/src/gui/opengl/opengl.pri b/src/gui/opengl/opengl.pri
index 26060ea5df..d9f0e0d6cc 100644
--- a/src/gui/opengl/opengl.pri
+++ b/src/gui/opengl/opengl.pri
@@ -10,20 +10,9 @@ qtConfig(opengl) {
                opengl/qopenglfunctions.h \
                opengl/qopenglframebufferobject.h  \
                opengl/qopenglframebufferobject_p.h  \
-               opengl/qopenglpaintdevice.h \
-               opengl/qopenglpaintdevice_p.h \
                opengl/qopenglbuffer.h \
                opengl/qopenglshaderprogram.h \
                opengl/qopenglextensions_p.h \
-               opengl/qopenglgradientcache_p.h \
-               opengl/qopengltexturecache_p.h \
-               opengl/qopenglengineshadermanager_p.h \
-               opengl/qopengl2pexvertexarray_p.h \
-               opengl/qopenglpaintengine_p.h \
-               opengl/qopenglengineshadersource_p.h \
-               opengl/qopenglcustomshaderstage_p.h \
-               opengl/qopengltextureglyphcache_p.h \
-               opengl/qopenglshadercache_p.h \
                opengl/qopenglversionfunctions.h \
                opengl/qopenglversionfunctionsfactory_p.h \
                opengl/qopenglvertexarrayobject.h \
@@ -31,7 +20,6 @@ qtConfig(opengl) {
                opengl/qopengltexture.h \
                opengl/qopengltexture_p.h \
                opengl/qopengltexturehelper_p.h \
-               opengl/qopengltextureuploader_p.h \
                opengl/qopenglpixeltransferoptions.h \
                opengl/qopenglextrafunctions.h \
                opengl/qopenglprogrambinarycache_p.h
@@ -39,23 +27,14 @@ qtConfig(opengl) {
     SOURCES += opengl/qopengl.cpp \
                opengl/qopenglfunctions.cpp \
                opengl/qopenglframebufferobject.cpp \
-               opengl/qopenglpaintdevice.cpp \
                opengl/qopenglbuffer.cpp \
                opengl/qopenglshaderprogram.cpp \
-               opengl/qopenglgradientcache.cpp \
-               opengl/qopengltexturecache.cpp \
-               opengl/qopenglengineshadermanager.cpp \
-               opengl/qopengl2pexvertexarray.cpp \
-               opengl/qopenglpaintengine.cpp \
-               opengl/qopenglcustomshaderstage.cpp \
-               opengl/qopengltextureglyphcache.cpp \
                opengl/qopenglversionfunctions.cpp \
                opengl/qopenglversionfunctionsfactory.cpp \
                opengl/qopenglvertexarrayobject.cpp \
                opengl/qopengltextureblitter.cpp \
                opengl/qopengltexture.cpp \
                opengl/qopengltexturehelper.cpp \
-               opengl/qopengltextureuploader.cpp \
                opengl/qopenglpixeltransferoptions.cpp \
                opengl/qopenglprogrambinarycache.cpp
 
diff --git a/src/opengl/opengl.pro b/src/opengl/opengl.pro
index a726db2be9..6c2a969820 100644
--- a/src/opengl/opengl.pro
+++ b/src/opengl/opengl.pro
@@ -10,11 +10,32 @@ qtConfig(opengl): CONFIG += opengl
 qtConfig(opengles2): CONFIG += opengles2
 
 HEADERS += \
+    qopengl2pexvertexarray_p.h \
+    qopenglcustomshaderstage_p.h \
     qopengldebug.h \
+    qopenglengineshadermanager_p.h \
+    qopenglengineshadersource_p.h \
+    qopenglgradientcache_p.h \
+    qopenglpaintdevice.h \
+    qopenglpaintdevice_p.h \
+    qopenglpaintengine_p.h \
+    qopenglshadercache_p.h \
+    qopengltexturecache_p.h \
+    qopengltextureglyphcache_p.h \
+    qopengltextureuploader_p.h \
     qopenglwindow.h \
     qtopenglglobal.h
 
 SOURCES += \
+    qopengl2pexvertexarray.cpp \
+    qopenglcustomshaderstage.cpp \
+    qopenglengineshadermanager.cpp \
+    qopenglgradientcache.cpp \
+    qopenglpaintdevice.cpp \
+    qopenglpaintengine.cpp \
+    qopengltexturecache.cpp \
+    qopengltextureglyphcache.cpp \
+    qopengltextureuploader.cpp \
     qopenglwindow.cpp \
     qopengldebug.cpp
 
diff --git a/src/gui/opengl/qopengl2pexvertexarray.cpp b/src/opengl/qopengl2pexvertexarray.cpp
index 04781f63c7..df0fb764c9 100644
--- a/src/gui/opengl/qopengl2pexvertexarray.cpp
+++ b/src/opengl/qopengl2pexvertexarray.cpp
@@ -3,7 +3,7 @@
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
-** This file is part of the QtGui module of the Qt Toolkit.
+** This file is part of the QtOpenGL module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
diff --git a/src/gui/opengl/qopengl2pexvertexarray_p.h b/src/opengl/qopengl2pexvertexarray_p.h
index 5dc060ff3d..3ef26e908d 100644
--- a/src/gui/opengl/qopengl2pexvertexarray_p.h
+++ b/src/opengl/qopengl2pexvertexarray_p.h
@@ -3,7 +3,7 @@
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
-** This file is part of the QtGui module of the Qt Toolkit.
+** This file is part of the QtOpenGL module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
@@ -51,7 +51,6 @@
 #ifndef QOPENGL2PEXVERTEXARRAY_P_H
 #define QOPENGL2PEXVERTEXARRAY_P_H
 
-#include <QtGui/private/qtguiglobal_p.h>
 #include <QRectF>
 
 #include <private/qdatabuffer_p.h>
diff --git a/src/gui/opengl/qopenglcustomshaderstage.cpp b/src/opengl/qopenglcustomshaderstage.cpp
index a95a0a5767..7a32b2fbc0 100644
--- a/src/gui/opengl/qopenglcustomshaderstage.cpp
+++ b/src/opengl/qopenglcustomshaderstage.cpp
@@ -3,7 +3,7 @@
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
-** This file is part of the QtGui module of the Qt Toolkit.
+** This file is part of the QtOpenGL module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
diff --git a/src/gui/opengl/qopenglcustomshaderstage_p.h b/src/opengl/qopenglcustomshaderstage_p.h
index ce3e9efd23..255c115e3c 100644
--- a/src/gui/opengl/qopenglcustomshaderstage_p.h
+++ b/src/opengl/qopenglcustomshaderstage_p.h
@@ -3,7 +3,7 @@
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
-** This file is part of the QtGui module of the Qt Toolkit.
+** This file is part of the QtOpenGL module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
@@ -51,7 +51,7 @@
 // We mean it.
 //
 
-#include <QtGui/private/qtguiglobal_p.h>
+#include <QtOpenGL/qtopenglglobal.h>
 #include <QOpenGLShaderProgram>
 
 QT_BEGIN_NAMESPACE
@@ -59,7 +59,7 @@ QT_BEGIN_NAMESPACE
 
 class QPainter;
 class QOpenGLCustomShaderStagePrivate;
-class Q_GUI_EXPORT QOpenGLCustomShaderStage
+class Q_OPENGL_EXPORT QOpenGLCustomShaderStage
 {
     Q_DECLARE_PRIVATE(QOpenGLCustomShaderStage)
 public:
diff --git a/src/gui/opengl/qopenglengineshadermanager.cpp b/src/opengl/qopenglengineshadermanager.cpp
index a569975486..09bd9ff096 100644
--- a/src/gui/opengl/qopenglengineshadermanager.cpp
+++ b/src/opengl/qopenglengineshadermanager.cpp
@@ -3,7 +3,7 @@
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
-** This file is part of the QtGui module of the Qt Toolkit.
+** This file is part of the QtOpenGL module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
@@ -40,7 +40,7 @@
 #include "qopenglengineshadermanager_p.h"
 #include "qopenglengineshadersource_p.h"
 #include "qopenglpaintengine_p.h"
-#include "qopenglshadercache_p.h"
+#include <private/qopenglshadercache_p.h>
 
 #include <QtGui/private/qopenglcontext_p.h>
 #include <QtCore/qthreadstorage.h>
diff --git a/src/gui/opengl/qopenglengineshadermanager_p.h b/src/opengl/qopenglengineshadermanager_p.h
index 14c79f5de3..71e6214278 100644
--- a/src/gui/opengl/qopenglengineshadermanager_p.h
+++ b/src/opengl/qopenglengineshadermanager_p.h
@@ -3,7 +3,7 @@
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
-** This file is part of the QtGui module of the Qt Toolkit.
+** This file is part of the QtOpenGL module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
@@ -220,7 +220,6 @@
 #ifndef QOPENGLENGINE_SHADER_MANAGER_H
 #define QOPENGLENGINE_SHADER_MANAGER_H
 
-#include <QtGui/private/qtguiglobal_p.h>
 #include <QOpenGLShader>
 #include <QOpenGLShaderProgram>
 #include <QPainter>
@@ -255,7 +254,7 @@ static const GLuint QT_PMV_MATRIX_3_ATTR = 5;
 
 class QOpenGLEngineShaderProg;
 
-class Q_GUI_EXPORT QOpenGLEngineSharedShaders
+class Q_OPENGL_EXPORT QOpenGLEngineSharedShaders
 {
     Q_GADGET
 public:
@@ -406,7 +405,7 @@ public:
     }
 };
 
-class Q_GUI_EXPORT QOpenGLEngineShaderManager : public QObject
+class Q_OPENGL_EXPORT QOpenGLEngineShaderManager : public QObject
 {
     Q_OBJECT
 public:
diff --git a/src/gui/opengl/qopenglengineshadersource_p.h b/src/opengl/qopenglengineshadersource_p.h
index 3ac599b6c2..49d17c8d79 100644
--- a/src/gui/opengl/qopenglengineshadersource_p.h
+++ b/src/opengl/qopenglengineshadersource_p.h
@@ -3,7 +3,7 @@
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
-** This file is part of the QtGui module of the Qt Toolkit.
+** This file is part of the QtOpenGL module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
@@ -52,7 +52,6 @@
 #ifndef QOPENGL_ENGINE_SHADER_SOURCE_H
 #define QOPENGL_ENGINE_SHADER_SOURCE_H
 
-#include <QtGui/private/qtguiglobal_p.h>
 #include "qopenglengineshadermanager_p.h"
 
 QT_BEGIN_NAMESPACE
diff --git a/src/gui/opengl/qopenglgradientcache.cpp b/src/opengl/qopenglgradientcache.cpp
index 3aa4c0d2e6..7a932a19bb 100644
--- a/src/gui/opengl/qopenglgradientcache.cpp
+++ b/src/opengl/qopenglgradientcache.cpp
@@ -3,7 +3,7 @@
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
-** This file is part of the QtGui module of the Qt Toolkit.
+** This file is part of the QtOpenGL module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
@@ -44,7 +44,7 @@
 #include <QtCore/qmutex.h>
 #include <QtCore/qrandom.h>
 #include "qopenglfunctions.h"
-#include "qopenglextensions_p.h"
+#include <private/qopenglextensions_p.h>
 
 #ifndef GL_RGBA16
 #define GL_RGBA16   0x805B
diff --git a/src/gui/opengl/qopenglgradientcache_p.h b/src/opengl/qopenglgradientcache_p.h
index 1d34223bdd..da070ae233 100644
--- a/src/gui/opengl/qopenglgradientcache_p.h
+++ b/src/opengl/qopenglgradientcache_p.h
@@ -3,7 +3,7 @@
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
-** This file is part of the QtGui module of the Qt Toolkit.
+** This file is part of the QtOpenGL module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
@@ -51,7 +51,6 @@
 // We mean it.
 //
 
-#include <QtGui/private/qtguiglobal_p.h>
 #include <QMultiHash>
 #include <QObject>
 #include <private/qopenglcontext_p.h>
diff --git a/src/gui/opengl/qopenglpaintdevice.cpp b/src/opengl/qopenglpaintdevice.cpp
index 3920a10467..811425cf69 100644
--- a/src/gui/opengl/qopenglpaintdevice.cpp
+++ b/src/opengl/qopenglpaintdevice.cpp
@@ -3,7 +3,7 @@
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
-** This file is part of the QtGui module of the Qt Toolkit.
+** This file is part of the QtOpenGL module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
@@ -58,7 +58,7 @@ QT_BEGIN_NAMESPACE
     \class QOpenGLPaintDevice
     \brief The QOpenGLPaintDevice class enables painting to an OpenGL context using QPainter.
     \since 5.0
-    \inmodule QtGui
+    \inmodule QtOpenGL
 
     \ingroup painting-3D
 
diff --git a/src/gui/opengl/qopenglpaintdevice.h b/src/opengl/qopenglpaintdevice.h
index 54118f2926..f4e1ce4a2e 100644
--- a/src/gui/opengl/qopenglpaintdevice.h
+++ b/src/opengl/qopenglpaintdevice.h
@@ -3,7 +3,7 @@
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
-** This file is part of the QtGui module of the Qt Toolkit.
+** This file is part of the QtOpenGL module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
@@ -40,7 +40,7 @@
 #ifndef QOPENGLPAINTDEVICE_H
 #define QOPENGLPAINTDEVICE_H
 
-#include <QtGui/qtguiglobal.h>
+#include <QtOpenGL/qtopenglglobal.h>
 
 #ifndef QT_NO_OPENGL
 
@@ -52,7 +52,7 @@ QT_BEGIN_NAMESPACE
 
 class QOpenGLPaintDevicePrivate;
 
-class Q_GUI_EXPORT QOpenGLPaintDevice : public QPaintDevice
+class Q_OPENGL_EXPORT QOpenGLPaintDevice : public QPaintDevice
 {
     Q_DECLARE_PRIVATE(QOpenGLPaintDevice)
 public:
diff --git a/src/gui/opengl/qopenglpaintdevice_p.h b/src/opengl/qopenglpaintdevice_p.h
index 3683ebebac..f4f02e7b57 100644
--- a/src/gui/opengl/qopenglpaintdevice_p.h
+++ b/src/opengl/qopenglpaintdevice_p.h
@@ -3,7 +3,7 @@
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
-** This file is part of the QtGui module of the Qt Toolkit.
+** This file is part of the QtOpenGL module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
@@ -51,7 +51,6 @@
 // We mean it.
 //
 
-#include <QtGui/private/qtguiglobal_p.h>
 #include <qopenglpaintdevice.h>
 
 QT_BEGIN_NAMESPACE
@@ -59,7 +58,7 @@ QT_BEGIN_NAMESPACE
 class QOpenGLContext;
 class QPaintEngine;
 
-class Q_GUI_EXPORT QOpenGLPaintDevicePrivate
+class Q_OPENGL_EXPORT QOpenGLPaintDevicePrivate
 {
 public:
     QOpenGLPaintDevicePrivate(const QSize &size);
diff --git a/src/gui/opengl/qopenglpaintengine.cpp b/src/opengl/qopenglpaintengine.cpp
index b53c9a3eab..4168067e8f 100644
--- a/src/gui/opengl/qopenglpaintengine.cpp
+++ b/src/opengl/qopenglpaintengine.cpp
@@ -3,7 +3,7 @@
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
-** This file is part of the QtGui module of the Qt Toolkit.
+** This file is part of the QtOpenGL module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
@@ -62,8 +62,8 @@
 
 // #define QT_OPENGL_CACHE_AS_VBOS
 
-#include "qopenglgradientcache_p.h"
-#include "qopengltexturecache_p.h"
+#include <private/qopenglgradientcache_p.h>
+#include <private/qopengltexturecache_p.h>
 #include "qopenglpaintengine_p.h"
 #include "qopenglpaintdevice_p.h"
 
@@ -81,9 +81,9 @@
 #include <private/qstatictext_p.h>
 #include <private/qtriangulator_p.h>
 
-#include "qopenglengineshadermanager_p.h"
-#include "qopengl2pexvertexarray_p.h"
-#include "qopengltextureglyphcache_p.h"
+#include <private/qopenglengineshadermanager_p.h>
+#include <private/qopengl2pexvertexarray_p.h>
+#include <private/qopengltextureglyphcache_p.h>
 
 #include <QDebug>
 
@@ -110,7 +110,7 @@
 QT_BEGIN_NAMESPACE
 
 
-Q_GUI_EXPORT QImage qt_imageForBrush(int brushStyle, bool invert);
+Q_OPENGL_EXPORT QImage qt_imageForBrush(int brushStyle, bool invert);
 
 ////////////////////////////////// Private Methods //////////////////////////////////////////
 
@@ -1348,7 +1348,7 @@ void QOpenGL2PaintEngineEx::fill(const QVectorPath &path, const QBrush &brush)
     d->fill(path);
 }
 
-Q_GUI_EXPORT bool qt_scaleForTransform(const QTransform &transform, qreal *scale); // qtransform.cpp
+Q_GUI_EXPORT extern bool qt_scaleForTransform(const QTransform &transform, qreal *scale); // qtransform.cpp
 
 
 void QOpenGL2PaintEngineEx::stroke(const QVectorPath &path, const QPen &pen)
diff --git a/src/gui/opengl/qopenglpaintengine_p.h b/src/opengl/qopenglpaintengine_p.h
index 81f17572b2..9dc92e3810 100644
--- a/src/gui/opengl/qopenglpaintengine_p.h
+++ b/src/opengl/qopenglpaintengine_p.h
@@ -3,7 +3,7 @@
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
-** This file is part of the QtGui module of the Qt Toolkit.
+** This file is part of the QtOpenGL module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
@@ -51,7 +51,6 @@
 // We mean it.
 //
 
-#include <QtGui/private/qtguiglobal_p.h>
 #include <QDebug>
 
 #include <qopenglpaintdevice.h>
@@ -109,7 +108,7 @@ public:
     QRect rectangleClip;
 };
 
-class Q_GUI_EXPORT QOpenGL2PaintEngineEx : public QPaintEngineEx
+class Q_OPENGL_EXPORT QOpenGL2PaintEngineEx : public QPaintEngineEx
 {
     Q_DECLARE_PRIVATE(QOpenGL2PaintEngineEx)
 public:
diff --git a/src/gui/opengl/qopenglshadercache_p.h b/src/opengl/qopenglshadercache_p.h
index 0f730602b0..88efa34216 100644
--- a/src/gui/opengl/qopenglshadercache_p.h
+++ b/src/opengl/qopenglshadercache_p.h
@@ -3,7 +3,7 @@
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
-** This file is part of the QtGui module of the Qt Toolkit.
+** This file is part of the QtOpenGL module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
@@ -51,7 +51,7 @@
 #ifndef QOPENGLSHADERCACHE_P_H
 #define QOPENGLSHADERCACHE_P_H
 
-#include <QtGui/private/qtguiglobal_p.h>
+#include <QtOpenGL/qtopenglglobal.h>
 
 QT_BEGIN_NAMESPACE
 
diff --git a/src/gui/opengl/qopengltexturecache.cpp b/src/opengl/qopengltexturecache.cpp
index ef07dbe109..5256c429e0 100644
--- a/src/gui/opengl/qopengltexturecache.cpp
+++ b/src/opengl/qopengltexturecache.cpp
@@ -3,7 +3,7 @@
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
-** This file is part of the QtGui module of the Qt Toolkit.
+** This file is part of the QtOpenGL module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
@@ -38,7 +38,7 @@
 ****************************************************************************/
 
 #include "qopengltexturecache_p.h"
-#include "qopengltextureuploader_p.h"
+#include <private/qopengltextureuploader_p.h>
 #include <qmath.h>
 #include <qopenglfunctions.h>
 #include <private/qimagepixmapcleanuphooks_p.h>
diff --git a/src/gui/opengl/qopengltexturecache_p.h b/src/opengl/qopengltexturecache_p.h
index 88ef06e744..14e03ebea1 100644
--- a/src/gui/opengl/qopengltexturecache_p.h
+++ b/src/opengl/qopengltexturecache_p.h
@@ -3,7 +3,7 @@
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
-** This file is part of the QtGui module of the Qt Toolkit.
+** This file is part of the QtOpenGL module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
@@ -51,7 +51,7 @@
 #ifndef QOPENGLTEXTURECACHE_P_H
 #define QOPENGLTEXTURECACHE_P_H
 
-#include <QtGui/private/qtguiglobal_p.h>
+#include <QtOpenGL/qtopenglglobal.h>
 #include <QHash>
 #include <QObject>
 #include <QCache>
@@ -63,7 +63,7 @@ QT_BEGIN_NAMESPACE
 
 class QOpenGLCachedTexture;
 
-class Q_GUI_EXPORT QOpenGLTextureCache : public QOpenGLSharedResource
+class Q_OPENGL_EXPORT QOpenGLTextureCache : public QOpenGLSharedResource
 {
 public:
     static QOpenGLTextureCache *cacheForContext(QOpenGLContext *context);
diff --git a/src/gui/opengl/qopengltextureglyphcache.cpp b/src/opengl/qopengltextureglyphcache.cpp
index 41027d26e0..66fd3a7507 100644
--- a/src/gui/opengl/qopengltextureglyphcache.cpp
+++ b/src/opengl/qopengltextureglyphcache.cpp
@@ -3,7 +3,7 @@
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
-** This file is part of the QtGui module of the Qt Toolkit.
+** This file is part of the QtOpenGL module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
@@ -38,9 +38,9 @@
 ****************************************************************************/
 
 #include "qopengltextureglyphcache_p.h"
-#include "qopenglpaintengine_p.h"
+#include <private/qopenglpaintengine_p.h>
 #include "private/qopenglengineshadersource_p.h"
-#include "qopenglextensions_p.h"
+#include <private/qopenglextensions_p.h>
 #include <qrgb.h>
 #include <private/qdrawhelper_p.h>
 
diff --git a/src/gui/opengl/qopengltextureglyphcache_p.h b/src/opengl/qopengltextureglyphcache_p.h
index 4bea4a463a..15ecd6209b 100644
--- a/src/gui/opengl/qopengltextureglyphcache_p.h
+++ b/src/opengl/qopengltextureglyphcache_p.h
@@ -3,7 +3,7 @@
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
-** This file is part of the QtGui module of the Qt Toolkit.
+** This file is part of the QtOpenGL module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
@@ -51,7 +51,7 @@
 // We mean it.
 //
 
-#include <QtGui/private/qtguiglobal_p.h>
+#include <QtOpenGL/qtopenglglobal.h>
 #include <private/qtextureglyphcache_p.h>
 #include <private/qopenglcontext_p.h>
 #include <qopenglshaderprogram.h>
@@ -107,7 +107,7 @@ public:
     int m_height;
 };
 
-class Q_GUI_EXPORT QOpenGLTextureGlyphCache : public QImageTextureGlyphCache
+class Q_OPENGL_EXPORT QOpenGLTextureGlyphCache : public QImageTextureGlyphCache
 {
 public:
     QOpenGLTextureGlyphCache(QFontEngine::GlyphFormat glyphFormat, const QTransform &matrix, const QColor &color = QColor());
diff --git a/src/gui/opengl/qopengltextureuploader.cpp b/src/opengl/qopengltextureuploader.cpp
index 9e393bc47a..469ddc56c1 100644
--- a/src/gui/opengl/qopengltextureuploader.cpp
+++ b/src/opengl/qopengltextureuploader.cpp
@@ -3,7 +3,7 @@
 ** Copyright (C) 2018 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
-** This file is part of the QtGui module of the Qt Toolkit.
+** This file is part of the QtOpenGL module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
diff --git a/src/gui/opengl/qopengltextureuploader_p.h b/src/opengl/qopengltextureuploader_p.h
index 0dcf709d7e..cea6d97658 100644
--- a/src/gui/opengl/qopengltextureuploader_p.h
+++ b/src/opengl/qopengltextureuploader_p.h
@@ -3,7 +3,7 @@
 ** Copyright (C) 2018 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
-** This file is part of the QtGui module of the Qt Toolkit.
+** This file is part of the QtOpenGL module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
@@ -52,14 +52,14 @@
 #define QOPENGLTEXTUREUPLOADER_P_H
 
 #include <QtCore/qsize.h>
-#include <QtGui/private/qtguiglobal_p.h>
+#include <QtOpenGL/qtopenglglobal.h>
 #include <QtGui/private/qopenglcontext_p.h>
 
 QT_BEGIN_NAMESPACE
 
 class QImage;
 
-class Q_GUI_EXPORT QOpenGLTextureUploader
+class Q_OPENGL_EXPORT QOpenGLTextureUploader
 {
 public:
     enum BindOption {
diff --git a/src/opengl/qopenglwidget.cpp b/src/opengl/qopenglwidget.cpp
index a6c63ae034..91e9fd545d 100644
--- a/src/opengl/qopenglwidget.cpp
+++ b/src/opengl/qopenglwidget.cpp
@@ -45,14 +45,16 @@
 #include <QtGui/QWindow>
 #include <QtGui/QGuiApplication>
 #include <QtGui/QScreen>
-#include <QtGui/QOpenGLPaintDevice>
 #include <QtGui/qpa/qplatformwindow.h>
 #include <QtGui/qpa/qplatformintegration.h>
+#include <QtOpenGL/QOpenGLPaintDevice>
+
 #include <QtGui/private/qguiapplication_p.h>
 #include <QtGui/private/qopenglextensions_p.h>
 #include <QtGui/private/qfont_p.h>
-#include <QtGui/private/qopenglpaintdevice_p.h>
 #include <QtGui/private/qopenglcontext_p.h>
+#include <QtOpenGL/private/qopenglpaintdevice_p.h>
+
 #include <QtWidgets/private/qwidget_p.h>
 
 QT_BEGIN_NAMESPACE
diff --git a/src/opengl/qopenglwindow.cpp b/src/opengl/qopenglwindow.cpp
index 8cdf134bfd..9328d9b46a 100644
--- a/src/opengl/qopenglwindow.cpp
+++ b/src/opengl/qopenglwindow.cpp
@@ -39,7 +39,6 @@
 
 #include "qopenglwindow.h"
 #include <QtGui/QOpenGLFramebufferObject>
-#include <QtGui/QOpenGLPaintDevice>
 #include <QtGui/QOpenGLFunctions>
 #include <QtGui/QOpenGLTextureBlitter>
 #include <QtGui/private/qpaintdevicewindow_p.h>
@@ -47,6 +46,7 @@
 #include <QtGui/private/qopenglcontext_p.h>
 #include <QtGui/QMatrix4x4>
 #include <QtGui/QOffscreenSurface>
+#include <QtOpenGL/QOpenGLPaintDevice>
 
 QT_BEGIN_NAMESPACE
 
diff --git a/src/plugins/platforms/minimalegl/minimalegl.pro b/src/plugins/platforms/minimalegl/minimalegl.pro
index b7dde9069f..3f6ae4e248 100644
--- a/src/plugins/platforms/minimalegl/minimalegl.pro
+++ b/src/plugins/platforms/minimalegl/minimalegl.pro
@@ -21,6 +21,7 @@ HEADERS =   qminimaleglintegration.h \
             qminimaleglscreen.h
 
 qtConfig(opengl) {
+    QT += opengl
     SOURCES += qminimaleglbackingstore.cpp
     HEADERS += qminimaleglbackingstore.h
 }
diff --git a/src/plugins/platforms/minimalegl/qminimaleglbackingstore.cpp b/src/plugins/platforms/minimalegl/qminimaleglbackingstore.cpp
index dc8dd74312..2319762f31 100644
--- a/src/plugins/platforms/minimalegl/qminimaleglbackingstore.cpp
+++ b/src/plugins/platforms/minimalegl/qminimaleglbackingstore.cpp
@@ -40,7 +40,7 @@
 #include "qminimaleglbackingstore.h"
 
 #include <QtGui/QOpenGLContext>
-#include <QtGui/QOpenGLPaintDevice>
+#include <QtOpenGL/QOpenGLPaintDevice>
 
 QT_BEGIN_NAMESPACE
 
diff --git a/tests/auto/gui/qopengl/qopengl.pro b/tests/auto/gui/qopengl/qopengl.pro
index 722c99ee0b..604aa59d8a 100644
--- a/tests/auto/gui/qopengl/qopengl.pro
+++ b/tests/auto/gui/qopengl/qopengl.pro
@@ -4,7 +4,7 @@
 
 CONFIG += testcase
 TARGET = tst_qopengl
-QT += gui-private core-private testlib
+QT += opengl gui-private core-private testlib
 
 SOURCES   += tst_qopengl.cpp
 
diff --git a/tests/auto/gui/qopengl/tst_qopengl.cpp b/tests/auto/gui/qopengl/tst_qopengl.cpp
index ede1e58a53..3b39c8c474 100644
--- a/tests/auto/gui/qopengl/tst_qopengl.cpp
+++ b/tests/auto/gui/qopengl/tst_qopengl.cpp
@@ -26,14 +26,13 @@
 **
 ****************************************************************************/
 
-
+#include <QtOpenGL/QOpenGLPaintDevice>
 #include <QtGui/private/qopenglcontext_p.h>
 #include <QtGui/QOpenGLFramebufferObject>
 #include <QtGui/QOpenGLFunctions>
 #include <QtGui/QOpenGLFunctions_4_2_Core>
 #include <QtGui/QOpenGLVertexArrayObject>
 #include <QtGui/QOpenGLBuffer>
-#include <QtGui/QOpenGLPaintDevice>
 #include <QtGui/QOpenGLTexture>
 #include <QtGui/QPainter>
 #include <QtGui/QScreen>
diff --git a/tests/auto/other/lancelot/lancelot.pro b/tests/auto/other/lancelot/lancelot.pro
index 6ece7315ed..5b9117983a 100644
--- a/tests/auto/other/lancelot/lancelot.pro
+++ b/tests/auto/other/lancelot/lancelot.pro
@@ -1,6 +1,7 @@
 CONFIG += testcase
 TARGET = tst_lancelot
 QT += testlib gui-private
+qtConfig(opengl): QT += opengl
 
 SOURCES += tst_lancelot.cpp \
            paintcommands.cpp
diff --git a/tests/auto/widgets/widgets/qopenglwidget/qopenglwidget.pro b/tests/auto/widgets/widgets/qopenglwidget/qopenglwidget.pro
index 039f5a71b8..f78dc510bf 100644
--- a/tests/auto/widgets/widgets/qopenglwidget/qopenglwidget.pro
+++ b/tests/auto/widgets/widgets/qopenglwidget/qopenglwidget.pro
@@ -1,5 +1,5 @@
 CONFIG += testcase
 TARGET = tst_qopenglwidget
-QT += opengl gui-private core-private testlib widgets
+QT += opengl opengl-private gui-private core-private testlib widgets
 
 SOURCES   += tst_qopenglwidget.cpp
diff --git a/tests/benchmarks/gui/painting/lancebench/lancebench.pro b/tests/benchmarks/gui/painting/lancebench/lancebench.pro
index 6458c50861..5647d26de3 100644
--- a/tests/benchmarks/gui/painting/lancebench/lancebench.pro
+++ b/tests/benchmarks/gui/painting/lancebench/lancebench.pro
@@ -2,7 +2,7 @@ TEMPLATE = app
 TARGET = tst_bench_lancebench
 
 QT += testlib gui-private
-
+qtConfig(opengl): QT += opengl
 
 SOURCES += tst_lancebench.cpp