diff options
Diffstat (limited to 'src/plugins/platforms/wayland/gl_integration/readback_egl/qwaylandreadbackeglcontext.cpp')
-rw-r--r-- | src/plugins/platforms/wayland/gl_integration/readback_egl/qwaylandreadbackeglcontext.cpp | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/src/plugins/platforms/wayland/gl_integration/readback_egl/qwaylandreadbackeglcontext.cpp b/src/plugins/platforms/wayland/gl_integration/readback_egl/qwaylandreadbackeglcontext.cpp new file mode 100644 index 0000000..c03e8a9 --- /dev/null +++ b/src/plugins/platforms/wayland/gl_integration/readback_egl/qwaylandreadbackeglcontext.cpp @@ -0,0 +1,174 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** 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. +** +** 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. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qwaylandreadbackeglcontext.h" + +#include <QPlatformSupport/eglconvenience/qeglconvenience_p.h> + +#include <QtCore/QDebug> +#include <QtGui/QWindowContext> + +#include <QtOpenGL/QGLContext> +#include <QtOpenGL/private/qglextensions_p.h> + +#include "qwaylandshmsurface.h" + + +static inline void qgl_byteSwapImage(QImage &img, GLenum pixel_type) +{ + const int width = img.width(); + const int height = img.height(); + + if (pixel_type == GL_UNSIGNED_INT_8_8_8_8_REV + || (pixel_type == GL_UNSIGNED_BYTE && QSysInfo::ByteOrder == QSysInfo::LittleEndian)) + { + for (int i = 0; i < height; ++i) { + uint *p = (uint *) img.scanLine(i); + for (int x = 0; x < width; ++x) + p[x] = ((p[x] << 16) & 0xff0000) | ((p[x] >> 16) & 0xff) | (p[x] & 0xff00ff00); + } + } else { + for (int i = 0; i < height; ++i) { + uint *p = (uint *) img.scanLine(i); + for (int x = 0; x < width; ++x) + p[x] = (p[x] << 8) | ((p[x] >> 24) & 0xff); + } + } +} + +QWaylandReadbackEglContext::QWaylandReadbackEglContext(QWaylandReadbackEglIntegration *eglIntegration, QWaylandReadbackEglWindow *window) + : mEglIntegration(eglIntegration) + , mWindow(window) + , mBuffer(0) + , mPixmap(0) + , mConfig(q_configFromQWindowFormat(eglIntegration->eglDisplay(),window->window()->requestedWindowFormat(),true,EGL_PIXMAP_BIT)) + , mPixmapSurface(EGL_NO_SURFACE) +{ + QVector<EGLint> eglContextAttrs; + eglContextAttrs.append(EGL_CONTEXT_CLIENT_VERSION); + eglContextAttrs.append(2); + eglContextAttrs.append(EGL_NONE); + + mContext = eglCreateContext(eglIntegration->eglDisplay(),mConfig,0,eglContextAttrs.constData()); + + geometryChanged(); +} + +QWaylandReadbackEglContext::~QWaylandReadbackEglContext() +{ + eglDestroyContext(mEglIntegration->eglDisplay(),mContext); +} + +void QWaylandReadbackEglContext::makeCurrent() +{ + mWindow->waitForFrameSync(); + + eglMakeCurrent(mEglIntegration->eglDisplay(),mPixmapSurface,mPixmapSurface,mContext); +} + +void QWaylandReadbackEglContext::doneCurrent() +{ + QPlatformOpenGLContext::doneCurrent(); + eglMakeCurrent(mEglIntegration->eglDisplay(),EGL_NO_SURFACE,EGL_NO_SURFACE,EGL_NO_CONTEXT); +} + +void QWaylandReadbackEglContext::swapBuffers() +{ + eglSwapBuffers(mEglIntegration->eglDisplay(),mPixmapSurface); + + if (QWindowContext::currentContext()->handle() != this) { + makeCurrent(); + } + + QSize size = mWindow->geometry().size(); + + QImage img(size,QImage::Format_ARGB32); + const uchar *constBits = img.bits(); + void *pixels = const_cast<uchar *>(constBits); + + glReadPixels(0,0, size.width(), size.height(), GL_RGBA,GL_UNSIGNED_BYTE, pixels); + + img = img.mirrored(); + qgl_byteSwapImage(img,GL_UNSIGNED_INT_8_8_8_8_REV); + constBits = img.bits(); + + const uchar *constDstBits = mBuffer->image()->bits(); + uchar *dstBits = const_cast<uchar *>(constDstBits); + memcpy(dstBits,constBits,(img.width()*4) * img.height()); + + + mWindow->damage(QRegion(QRect(QPoint(0,0),size))); +} + +void * QWaylandReadbackEglContext::getProcAddress(const QString &procName) +{ + return (void *) eglGetProcAddress(procName.toLatin1().data()); +} + +QWindowFormat QWaylandReadbackEglContext::windowFormat() const +{ + return q_windowFormatFromConfig(mEglIntegration->eglDisplay(),mConfig); +} + +void QWaylandReadbackEglContext::geometryChanged() +{ + QSize size(mWindow->geometry().size()); + if (size.isEmpty()) { + //QGLWidget wants a context for a window without geometry + size = QSize(1,1); + } + + mWindow->waitForFrameSync(); + + delete mBuffer; + if (mPixmap) + XFreePixmap(mEglIntegration->xDisplay(),mPixmap); + + mBuffer = new QWaylandShmBuffer(mEglIntegration->waylandDisplay(),size,QImage::Format_ARGB32); + mWindow->attach(mBuffer); + mPixmap = XCreatePixmap(mEglIntegration->xDisplay(),mEglIntegration->rootWindow(),size.width(),size.height(),mEglIntegration->depth()); + XSync(mEglIntegration->xDisplay(),False); + + mPixmapSurface = eglCreatePixmapSurface(mEglIntegration->eglDisplay(),mConfig,mPixmap,0); + if (mPixmapSurface == EGL_NO_SURFACE) { + qDebug() << "Could not make egl surface out of pixmap :("; + } +} |