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authorLars Knoll <lars.knoll@nokia.com>2009-03-23 09:34:13 (GMT)
committerSimon Hausmann <simon.hausmann@nokia.com>2009-03-23 09:34:13 (GMT)
commit67ad0519fd165acee4a4d2a94fa502e9e4847bd0 (patch)
tree1dbf50b3dff8d5ca7e9344733968c72704eb15ff /src/opengl/qgl_egl.cpp
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Long live Qt!
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diff --git a/src/opengl/qgl_egl.cpp 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