src/opengl/qgl_egl.cpp
changeset 0 1918ee327afb
child 3 41300fa6a67c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/opengl/qgl_egl.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,233 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtOpenGL/qgl.h>
+#include "qgl_p.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) == 0 || f.redBufferSize() != -1)
+        props.setValue(EGL_RED_SIZE, f.redBufferSize() == -1 ? 1 : f.redBufferSize());
+    if (props.value(EGL_GREEN_SIZE) == 0 || f.greenBufferSize() != -1)
+        props.setValue(EGL_GREEN_SIZE, f.greenBufferSize() == -1 ? 1 : f.greenBufferSize());
+    if (props.value(EGL_BLUE_SIZE) == 0 || f.blueBufferSize() != -1)
+        props.setValue(EGL_BLUE_SIZE, f.blueBufferSize() == -1 ? 1 : f.blueBufferSize());
+    if (f.alpha()) {
+        if (props.value(EGL_ALPHA_SIZE) == 0 || 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() == -1 ? 1 : 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();
+}
+
+bool QGLFormat::hasOpenGL()
+{
+    return true;
+}
+
+void QGLContext::reset()
+{
+    Q_D(QGLContext);
+    if (!d->valid)
+        return;
+    d->cleanup();
+    doneCurrent();
+    if (d->eglContext) {
+        if (d->eglSurface != EGL_NO_SURFACE) {
+#ifdef Q_WS_X11
+            // Make sure we don't call eglDestroySurface on a surface which
+            // was created for a different winId:
+            if (d->paintDevice->devType() == QInternal::Widget) {
+                QGLWidget* w = static_cast<QGLWidget*>(d->paintDevice);
+
+                if (w->d_func()->eglSurfaceWindowId == w->winId())
+                    eglDestroySurface(d->eglContext->display(), d->eglSurface);
+            } else
+#endif
+                eglDestroySurface(d->eglContext->display(), d->eglSurface);
+        }
+        delete d->eglContext;
+    }
+    d->eglContext = 0;
+    d->eglSurface = EGL_NO_SURFACE;
+    d->crWin = false;
+    d->sharing = false;
+    d->valid = false;
+    d->transpColor = QColor();
+    d->initDone = false;
+    qgl_share_reg()->removeShare(this);
+}
+
+void QGLContext::makeCurrent()
+{
+    Q_D(QGLContext);
+    if (!d->valid || !d->eglContext || d->eglSurface == EGL_NO_SURFACE) {
+        qWarning("QGLContext::makeCurrent(): Cannot make invalid context current");
+        return;
+    }
+
+    if (d->eglContext->makeCurrent(d->eglSurface))
+        QGLContextPrivate::setCurrentContext(this);
+}
+
+void QGLContext::doneCurrent()
+{
+    Q_D(QGLContext);
+    if (d->eglContext)
+        d->eglContext->doneCurrent();
+
+    QGLContextPrivate::setCurrentContext(0);
+}
+
+
+void QGLContext::swapBuffers() const
+{
+    Q_D(const QGLContext);
+    if (!d->valid || !d->eglContext)
+        return;
+
+    d->eglContext->swapBuffers(d->eglSurface);
+}
+
+void QGLWidget::setMouseTracking(bool enable)
+{
+    QWidget::setMouseTracking(enable);
+}
+
+QColor QGLContext::overlayTransparentColor() const
+{
+    return d_func()->transpColor;
+}
+
+uint QGLContext::colorIndex(const QColor &c) const
+{
+    Q_UNUSED(c);
+    return 0;
+}
+
+void QGLContext::generateFontDisplayLists(const QFont & fnt, int listBase)
+{
+    Q_UNUSED(fnt);
+    Q_UNUSED(listBase);
+}
+
+void *QGLContext::getProcAddress(const QString &proc) const
+{
+    return (void*)eglGetProcAddress(reinterpret_cast<const char *>(proc.toLatin1().data()));
+}
+
+bool QGLWidgetPrivate::renderCxPm(QPixmap*)
+{
+    return false;
+}
+
+QT_END_NAMESPACE