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-rw-r--r--vcl/qt5/QtOpenGLContext.cxx154
1 files changed, 154 insertions, 0 deletions
diff --git a/vcl/qt5/QtOpenGLContext.cxx b/vcl/qt5/QtOpenGLContext.cxx
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+++ b/vcl/qt5/QtOpenGLContext.cxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <QtOpenGLContext.hxx>
+
+#include <epoxy/gl.h>
+
+#include <vcl/sysdata.hxx>
+#include <opengl/zone.hxx>
+#include <sal/log.hxx>
+
+#include <window.h>
+
+#include <QtObject.hxx>
+
+#include <QtGui/QOpenGLContext>
+#include <QtGui/QWindow>
+
+bool QtOpenGLContext::g_bAnyCurrent = false;
+
+void QtOpenGLContext::swapBuffers()
+{
+ OpenGLZone aZone;
+
+ if (m_pContext && m_pWindow && m_pWindow->isExposed())
+ {
+ m_pContext->swapBuffers(m_pWindow);
+ }
+
+ BuffersSwapped();
+}
+
+void QtOpenGLContext::resetCurrent()
+{
+ clearCurrent();
+
+ OpenGLZone aZone;
+
+ if (m_pContext)
+ {
+ m_pContext->doneCurrent();
+ g_bAnyCurrent = false;
+ }
+}
+
+bool QtOpenGLContext::isCurrent()
+{
+ OpenGLZone aZone;
+ return g_bAnyCurrent && (QOpenGLContext::currentContext() == m_pContext);
+}
+
+bool QtOpenGLContext::isAnyCurrent()
+{
+ OpenGLZone aZone;
+ return g_bAnyCurrent && (QOpenGLContext::currentContext() != nullptr);
+}
+
+bool QtOpenGLContext::ImplInit()
+{
+ if (!m_pWindow)
+ {
+ SAL_WARN("vcl.opengl.qt", "failed to create window");
+ return false;
+ }
+
+ m_pWindow->setSurfaceType(QSurface::OpenGLSurface);
+ m_pWindow->create();
+
+ m_pContext = new QOpenGLContext(m_pWindow);
+ if (!m_pContext->create())
+ {
+ SAL_WARN("vcl.opengl.qt", "failed to create context");
+ return false;
+ }
+
+ m_pContext->makeCurrent(m_pWindow);
+ g_bAnyCurrent = true;
+
+ bool bRet = InitGL();
+ InitGLDebugging();
+
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
+
+ registerAsCurrent();
+
+ return bRet;
+}
+
+void QtOpenGLContext::makeCurrent()
+{
+ if (isCurrent())
+ return;
+
+ OpenGLZone aZone;
+
+ clearCurrent();
+
+ if (m_pContext && m_pWindow)
+ {
+ m_pContext->makeCurrent(m_pWindow);
+ g_bAnyCurrent = true;
+ }
+
+ registerAsCurrent();
+}
+
+void QtOpenGLContext::destroyCurrentContext()
+{
+ OpenGLZone aZone;
+
+ if (m_pContext)
+ {
+ m_pContext->doneCurrent();
+ g_bAnyCurrent = false;
+ }
+
+ if (glGetError() != GL_NO_ERROR)
+ {
+ SAL_WARN("vcl.opengl.qt", "glError: " << glGetError());
+ }
+}
+
+void QtOpenGLContext::initWindow()
+{
+ if (!m_pChildWindow)
+ {
+ SystemWindowData winData = generateWinData(mpWindow, mbRequestLegacyContext);
+ m_pChildWindow = VclPtr<SystemChildWindow>::Create(mpWindow, 0, &winData, false);
+ }
+
+ if (m_pChildWindow)
+ {
+ InitChildWindow(m_pChildWindow.get());
+ }
+
+ m_pWindow
+ = static_cast<QtObject*>(m_pChildWindow->ImplGetWindowImpl()->mpSysObj)->windowHandle();
+}