Long live Qt!

1 files changed, 131 insertions, 0 deletions

diff --git a/src/opengl/qgl_egl.cpp b/src/opengl/qgl_egl.cpp
new file mode 100644
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--- /dev/null
+++ b/src/opengl/qgl_egl.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtOpenGL/qgl.h>
+#include "qgl_egl_p.h"
+
+QT_BEGIN_NAMESPACE
+
+// Set device configuration attributes from a QGLFormat instance.
+void qt_egl_set_format(QEglProperties& props, int deviceType, const QGLFormat& f)
+{
+    if (deviceType == QInternal::Pixmap || deviceType == QInternal::Image)
+        props.setValue(EGL_SURFACE_TYPE, EGL_PIXMAP_BIT);
+    else if (deviceType == QInternal::Pbuffer)
+        props.setValue(EGL_SURFACE_TYPE, EGL_PBUFFER_BIT);
+    else
+        props.setValue(EGL_SURFACE_TYPE, EGL_WINDOW_BIT);
+
+    // Set the pixel format to that contained in the QGLFormat
+    // if the system hasn't already chosen a fixed format to
+    // match the pixmap, widget, etc.
+    if (props.value(EGL_RED_SIZE) == EGL_DONT_CARE || f.redBufferSize() != -1)
+        props.setValue(EGL_RED_SIZE, f.redBufferSize() == -1 ? 1 : f.redBufferSize());
+    if (props.value(EGL_GREEN_SIZE) == EGL_DONT_CARE || f.greenBufferSize() != -1)
+        props.setValue(EGL_GREEN_SIZE, f.greenBufferSize() == -1 ? 1 : f.greenBufferSize());
+    if (props.value(EGL_BLUE_SIZE) == EGL_DONT_CARE || f.blueBufferSize() != -1)
+        props.setValue(EGL_BLUE_SIZE, f.blueBufferSize() == -1 ? 1 : f.blueBufferSize());
+    if (f.alpha()) {
+        if (props.value(EGL_ALPHA_SIZE) == EGL_DONT_CARE || f.alphaBufferSize() != -1)
+            props.setValue(EGL_ALPHA_SIZE, f.alphaBufferSize() == -1 ? 1 : f.alphaBufferSize());
+    }
+
+    if (f.depth())
+        props.setValue(EGL_DEPTH_SIZE, f.depthBufferSize() == -1 ? 1 : f.depthBufferSize());
+    if (f.stencil())
+        props.setValue(EGL_STENCIL_SIZE, f.stencilBufferSize() == -1 ? 1 : f.stencilBufferSize());
+    if (f.sampleBuffers()) {
+        props.setValue(EGL_SAMPLE_BUFFERS, 1);
+        props.setValue(EGL_SAMPLES, f.samples());
+    } else {
+        props.setValue(EGL_SAMPLE_BUFFERS, 0);
+    }
+    if (deviceType == QInternal::Widget)
+        props.setValue(EGL_LEVEL, f.plane());
+}
+
+// Updates "format" with the parameters of the selected configuration.
+void qt_egl_update_format(const QEglContext& context, QGLFormat& format)
+{
+    EGLint value = 0;
+
+    if (context.configAttrib(EGL_RED_SIZE, &value))
+        format.setRedBufferSize(value);
+    if (context.configAttrib(EGL_GREEN_SIZE, &value))
+        format.setGreenBufferSize(value);
+    if (context.configAttrib(EGL_BLUE_SIZE, &value))
+        format.setBlueBufferSize(value);
+    if (context.configAttrib(EGL_ALPHA_SIZE, &value)) {
+        format.setAlpha(value != 0);
+        if (format.alpha())
+            format.setAlphaBufferSize(value);
+    }
+
+    if (context.configAttrib(EGL_DEPTH_SIZE, &value)) {
+        format.setDepth(value != 0);
+        if (format.depth())
+            format.setDepthBufferSize(value);
+    }
+
+    if (context.configAttrib(EGL_LEVEL, &value))
+        format.setPlane(value);
+
+    if (context.configAttrib(EGL_SAMPLE_BUFFERS, &value)) {
+        format.setSampleBuffers(value != 0);
+        if (format.sampleBuffers()) {
+            context.configAttrib(EGL_SAMPLES, &value);
+            format.setSamples(value);
+        }
+    }
+
+    if (context.configAttrib(EGL_STENCIL_SIZE, &value)) {
+        format.setStencil(value != 0);
+        if (format.stencil())
+            format.setStencilBufferSize(value);
+    }
+
+    // Clear the EGL error state because some of the above may
+    // have errored out because the attribute is not applicable
+    // to the surface type.  Such errors don't matter.
+    context.clearError();
+}
+
+QT_END_NAMESPACE