1 files changed, 137 insertions, 0 deletions
diff --git a/src/opengl/qopenglcustomshaderstage.cpp b/src/opengl/qopenglcustomshaderstage.cpp
new file mode 100644
index 0000000000..7a32b2fbc0
--- /dev/null
+++ b/src/opengl/qopenglcustomshaderstage.cpp
@@ -0,0 +1,137 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtOpenGL 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 "qopenglcustomshaderstage_p.h"
+#include "qopenglengineshadermanager_p.h"
+#include "qopenglpaintengine_p.h"
+#include <private/qpainter_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QOpenGLCustomShaderStagePrivate
+{
+public:
+    QOpenGLCustomShaderStagePrivate() :
+        m_manager(nullptr) {}
+
+    QPointer<QOpenGLEngineShaderManager> m_manager;
+    QByteArray              m_source;
+};
+
+
+
+
+QOpenGLCustomShaderStage::QOpenGLCustomShaderStage()
+    : d_ptr(new QOpenGLCustomShaderStagePrivate)
+{
+}
+
+QOpenGLCustomShaderStage::~QOpenGLCustomShaderStage()
+{
+    Q_D(QOpenGLCustomShaderStage);
+    if (d->m_manager) {
+        d->m_manager->removeCustomStage();
+        d->m_manager->sharedShaders->cleanupCustomStage(this);
+    }
+    delete d_ptr;
+}
+
+void QOpenGLCustomShaderStage::setUniformsDirty()
+{
+    Q_D(QOpenGLCustomShaderStage);
+    if (d->m_manager)
+        d->m_manager->setDirty(); // ### Probably a bit overkill!
+}
+
+bool QOpenGLCustomShaderStage::setOnPainter(QPainter* p)
+{
+    Q_D(QOpenGLCustomShaderStage);
+    if (p->paintEngine()->type() != QPaintEngine::OpenGL2) {
+        qWarning("QOpenGLCustomShaderStage::setOnPainter() - paint engine not OpenGL2");
+        return false;
+    }
+    if (d->m_manager)
+        qWarning("Custom shader is already set on a painter");
+
+    QOpenGL2PaintEngineEx *engine = static_cast<QOpenGL2PaintEngineEx*>(p->paintEngine());
+    d->m_manager = QOpenGL2PaintEngineExPrivate::shaderManagerForEngine(engine);
+    Q_ASSERT(d->m_manager);
+
+    d->m_manager->setCustomStage(this);
+    return true;
+}
+
+void QOpenGLCustomShaderStage::removeFromPainter(QPainter* p)
+{
+    Q_D(QOpenGLCustomShaderStage);
+    if (p->paintEngine()->type() != QPaintEngine::OpenGL2)
+        return;
+
+    QOpenGL2PaintEngineEx *engine = static_cast<QOpenGL2PaintEngineEx*>(p->paintEngine());
+    d->m_manager = QOpenGL2PaintEngineExPrivate::shaderManagerForEngine(engine);
+    Q_ASSERT(d->m_manager);
+
+    // Just set the stage to null, don't call removeCustomStage().
+    // This should leave the program in a compiled/linked state
+    // if the next custom shader stage is this one again.
+    d->m_manager->setCustomStage(nullptr);
+    d->m_manager = nullptr;
+}
+
+QByteArray QOpenGLCustomShaderStage::source() const
+{
+    Q_D(const QOpenGLCustomShaderStage);
+    return d->m_source;
+}
+
+// Called by the shader manager if another custom shader is attached or
+// the manager is deleted
+void QOpenGLCustomShaderStage::setInactive()
+{
+    Q_D(QOpenGLCustomShaderStage);
+    d->m_manager = nullptr;
+}
+
+void QOpenGLCustomShaderStage::setSource(const QByteArray& s)
+{
+    Q_D(QOpenGLCustomShaderStage);
+    d->m_source = s;
+}
+
+QT_END_NAMESPACE