[Shader Graph Gen.] Introduce QShaderLanguage

This is a new namespace with helper enums to have richer parameters
available to QShaderNode. Will be used in further commits.

Change-Id: I9a61481c1e89ddd08327211e90eeabf0172c3b7a
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

3 files changed, 221 insertions, 0 deletions

diff --git a/src/gui/util/qshaderlanguage.cpp b/src/gui/util/qshaderlanguage.cpp
new file mode 100644
index 0000000000..4a0da5bfb5
--- /dev/null
+++ b/src/gui/util/qshaderlanguage.cpp
@@ -0,0 +1,56 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 Klaralvdalens Datakonsult AB (KDAB).
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Quick Layouts module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qshaderlanguage_p.h"
+
+#include <QtCore/qcoreapplication.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace {
+    void registerEnums()
+    {
+        qRegisterMetaType<QShaderLanguage::StorageQualifier>();
+        qRegisterMetaType<QShaderLanguage::VariableType>();
+    }
+}
+
+Q_COREAPP_STARTUP_FUNCTION(registerEnums)
+
+QT_END_NAMESPACE
diff --git a/src/gui/util/qshaderlanguage_p.h b/src/gui/util/qshaderlanguage_p.h
new file mode 100644
index 0000000000..5c7819a3b8
--- /dev/null
+++ b/src/gui/util/qshaderlanguage_p.h
@@ -0,0 +1,163 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 Klaralvdalens Datakonsult AB (KDAB).
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Quick Layouts module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSHADERLANGUAGE_P_H
+#define QSHADERLANGUAGE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtGui/private/qtguiglobal_p.h>
+
+#include <QtCore/qmetatype.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace QShaderLanguage
+{
+    Q_GUI_EXPORT Q_NAMESPACE
+
+    enum StorageQualifier : char {
+        Const = 1,
+        Input,
+        Output,
+        Uniform
+    };
+    Q_ENUM_NS(StorageQualifier)
+
+    enum VariableType : int {
+        Bool = 1,
+        Int,
+        Uint,
+        Float,
+        Double,
+        Vec2,
+        Vec3,
+        Vec4,
+        DVec2,
+        DVec3,
+        DVec4,
+        BVec2,
+        BVec3,
+        BVec4,
+        IVec2,
+        IVec3,
+        IVec4,
+        UVec2,
+        UVec3,
+        UVec4,
+        Mat2,
+        Mat3,
+        Mat4,
+        Mat2x2,
+        Mat2x3,
+        Mat2x4,
+        Mat3x2,
+        Mat3x3,
+        Mat3x4,
+        Mat4x2,
+        Mat4x3,
+        Mat4x4,
+        DMat2,
+        DMat3,
+        DMat4,
+        DMat2x2,
+        DMat2x3,
+        DMat2x4,
+        DMat3x2,
+        DMat3x3,
+        DMat3x4,
+        DMat4x2,
+        DMat4x3,
+        DMat4x4,
+        Sampler1D,
+        Sampler2D,
+        Sampler3D,
+        SamplerCube,
+        Sampler2DRect,
+        Sampler2DMs,
+        SamplerBuffer,
+        Sampler1DArray,
+        Sampler2DArray,
+        Sampler2DMsArray,
+        SamplerCubeArray,
+        Sampler1DShadow,
+        Sampler2DShadow,
+        Sampler2DRectShadow,
+        Sampler1DArrayShadow,
+        Sampler2DArrayShadow,
+        SamplerCubeShadow,
+        SamplerCubeArrayShadow,
+        ISampler1D,
+        ISampler2D,
+        ISampler3D,
+        ISamplerCube,
+        ISampler2DRect,
+        ISampler2DMs,
+        ISamplerBuffer,
+        ISampler1DArray,
+        ISampler2DArray,
+        ISampler2DMsArray,
+        ISamplerCubeArray,
+        USampler1D,
+        USampler2D,
+        USampler3D,
+        USamplerCube,
+        USampler2DRect,
+        USampler2DMs,
+        USamplerBuffer,
+        USampler1DArray,
+        USampler2DArray,
+        USampler2DMsArray,
+        USamplerCubeArray
+    };
+    Q_ENUM_NS(VariableType)
+}
+
+QT_END_NAMESPACE
+
+#endif // QSHADERLANGUAGE_P_H
diff --git a/src/gui/util/util.pri b/src/gui/util/util.pri
index c30a46b9af..cf3cbee48e 100644
--- a/src/gui/util/util.pri
+++ b/src/gui/util/util.pri
@@ -11,6 +11,7 @@ HEADERS += \
         util/qshadergenerator_p.h \
         util/qshadergraph_p.h \
         util/qshadergraphloader_p.h \
+        util/qshaderlanguage_p.h \
         util/qshadernode_p.h \
         util/qshadernodeport_p.h \
         util/qshadernodesloader_p.h
@@ -25,6 +26,7 @@ SOURCES += \
         util/qshadergenerator.cpp \
         util/qshadergraph.cpp \
         util/qshadergraphloader.cpp \
+        util/qshaderlanguage.cpp \
         util/qshadernode.cpp \
         util/qshadernodeport.cpp \
         util/qshadernodesloader.cpp