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Diffstat (limited to 'src/opengl/qgl_egl.cpp')
| -rw-r--r-- | src/opengl/qgl_egl.cpp | 131 |
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 index 0000000000..98c5710420 --- /dev/null +++ b/src/opengl/qgl_egl.cpp @@ -0,0 +1,131 @@ +/**************************************************************************** +** +** 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 |