diff options
Diffstat (limited to 'src/plugins/graphicssystems/meego/qmeegolivepixmapdata.cpp')
-rw-r--r-- | src/plugins/graphicssystems/meego/qmeegolivepixmapdata.cpp | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/src/plugins/graphicssystems/meego/qmeegolivepixmapdata.cpp b/src/plugins/graphicssystems/meego/qmeegolivepixmapdata.cpp new file mode 100644 index 0000000..405b765 --- /dev/null +++ b/src/plugins/graphicssystems/meego/qmeegolivepixmapdata.cpp @@ -0,0 +1,287 @@ +/**************************************************************************** +** +** Copyright (C) 2010 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. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 "qmeegolivepixmapdata.h" +#include "qmeegoextensions.h" +#include "qmeegorasterpixmapdata.h" +#include <private/qimage_p.h> +#include <private/qwindowsurface_gl_p.h> +#include <private/qeglcontext_p.h> +#include <private/qapplication_p.h> +#include <private/qgraphicssystem_runtime_p.h> +#include <private/qpixmap_x11_p.h> +#include <stdio.h> + +static EGLint lock_attribs[] = { + EGL_MAP_PRESERVE_PIXELS_KHR, EGL_TRUE, + EGL_LOCK_USAGE_HINT_KHR, EGL_READ_SURFACE_BIT_KHR | EGL_WRITE_SURFACE_BIT_KHR, + EGL_NONE +}; + +static EGLint preserved_attribs[] = { + EGL_IMAGE_PRESERVED_KHR, EGL_TRUE, + EGL_NONE +}; + +// as copied from qwindowsurface.cpp +void qt_scrollRectInImage(QImage &img, const QRect &rect, const QPoint &offset) +{ + // make sure we don't detach + uchar *mem = const_cast<uchar*>(const_cast<const QImage &>(img).bits()); + + int lineskip = img.bytesPerLine(); + int depth = img.depth() >> 3; + + const QRect imageRect(0, 0, img.width(), img.height()); + const QRect r = rect & imageRect & imageRect.translated(-offset); + const QPoint p = rect.topLeft() + offset; + + if (r.isEmpty()) + return; + + const uchar *src; + uchar *dest; + + if (r.top() < p.y()) { + src = mem + r.bottom() * lineskip + r.left() * depth; + dest = mem + (p.y() + r.height() - 1) * lineskip + p.x() * depth; + lineskip = -lineskip; + } else { + src = mem + r.top() * lineskip + r.left() * depth; + dest = mem + p.y() * lineskip + p.x() * depth; + } + + const int w = r.width(); + int h = r.height(); + const int bytes = w * depth; + + // overlapping segments? + if (offset.y() == 0 && qAbs(offset.x()) < w) { + do { + ::memmove(dest, src, bytes); + dest += lineskip; + src += lineskip; + } while (--h); + } else { + do { + ::memcpy(dest, src, bytes); + dest += lineskip; + src += lineskip; + } while (--h); + } +} + +/* Public */ + +QMeeGoLivePixmapData::QMeeGoLivePixmapData(int w, int h, QImage::Format format) : QGLPixmapData(QPixmapData::PixmapType) +{ + QImage image(w, h, format); + QX11PixmapData *pmd = new QX11PixmapData(QPixmapData::PixmapType); + pmd->fromImage(image, Qt::NoOpaqueDetection); + backingX11Pixmap = new QPixmap(pmd); + + initializeThroughEGLImage(); +} + +QMeeGoLivePixmapData::QMeeGoLivePixmapData(Qt::HANDLE h) : QGLPixmapData(QPixmapData::PixmapType) +{ + backingX11Pixmap = new QPixmap(QPixmap::fromX11Pixmap(h)); + initializeThroughEGLImage(); +} + +QMeeGoLivePixmapData::~QMeeGoLivePixmapData() +{ + delete backingX11Pixmap; +} + +void QMeeGoLivePixmapData::initializeThroughEGLImage() +{ + QGLShareContextScope ctx(qt_gl_share_widget()->context()); + QMeeGoExtensions::ensureInitialized(); + + EGLImageKHR eglImage = EGL_NO_IMAGE_KHR; + GLuint newTextureId = 0; + + eglImage = QEgl::eglCreateImageKHR(QEgl::display(), EGL_NO_CONTEXT, EGL_NATIVE_PIXMAP_KHR, + (EGLClientBuffer) backingX11Pixmap->handle(), preserved_attribs); + + if (eglImage == EGL_NO_IMAGE_KHR) { + qWarning("eglCreateImageKHR failed (live texture)!"); + return; + } + + glGenTextures(1, &newTextureId); + glBindTexture(GL_TEXTURE_2D, newTextureId); + + glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (EGLImageKHR) eglImage); + if (glGetError() == GL_NO_ERROR) { + resize(backingX11Pixmap->width(), backingX11Pixmap->height()); + texture()->id = newTextureId; + texture()->options &= ~QGLContext::InvertedYBindOption; + m_hasAlpha = backingX11Pixmap->hasAlphaChannel(); + } else { + qWarning("Failed to create a texture from an egl image (live texture)!"); + glDeleteTextures(1, &newTextureId); + } + + QEgl::eglDestroyImageKHR(QEgl::display(), eglImage); +} + +QPixmapData *QMeeGoLivePixmapData::createCompatiblePixmapData() const +{ + qWarning("Create compatible called on live pixmap! Expect fail soon..."); + return new QMeeGoRasterPixmapData(pixelType()); +} + +QImage* QMeeGoLivePixmapData::lock() +{ + QGLShareContextScope ctx(qt_gl_share_widget()->context()); + QMeeGoExtensions::ensureInitialized(); + + void *data = 0; + int pitch = 0; + EGLSurface surface = 0; + QImage::Format format; + lockedImage = QImage(); + + surface = getSurfaceForBackingPixmap(); + if (! QMeeGoExtensions::eglLockSurfaceKHR(QEgl::display(), surface, lock_attribs)) { + qWarning("Failed to lock surface (live texture)!"); + return &lockedImage; + } + + eglQuerySurface(QEgl::display(), surface, EGL_BITMAP_POINTER_KHR, (EGLint*) &data); + eglQuerySurface(QEgl::display(), surface, EGL_BITMAP_PITCH_KHR, (EGLint*) &pitch); + + // Ok, here we know we just support those two formats. Real solution would be: + // uqery also the format. + if (backingX11Pixmap->depth() > 16) + format = QImage::Format_ARGB32_Premultiplied; + else + format = QImage::Format_RGB16; + + if (data == NULL || pitch == 0) { + qWarning("Failed to query the live texture!"); + return &lockedImage; + } + + lockedImage = QImage((uchar *) data, width(), height(), format); + return &lockedImage; +} + +bool QMeeGoLivePixmapData::release(QImage* /*img*/) +{ + QGLShareContextScope ctx(qt_gl_share_widget()->context()); + QMeeGoExtensions::ensureInitialized(); + + if (QMeeGoExtensions::eglUnlockSurfaceKHR(QEgl::display(), getSurfaceForBackingPixmap())) { + lockedImage = QImage(); + glFinish(); + return true; + } else { + lockedImage = QImage(); + return false; + } +} + +Qt::HANDLE QMeeGoLivePixmapData::handle() +{ + return backingX11Pixmap->handle(); +} + +bool QMeeGoLivePixmapData::scroll(int dx, int dy, const QRect &rect) +{ + lock(); + + if (!lockedImage.isNull()) + qt_scrollRectInImage(lockedImage, rect, QPoint(dx, dy)); + + release(&lockedImage); + return true; +} + +EGLSurface QMeeGoLivePixmapData::getSurfaceForBackingPixmap() +{ + // This code is a crative remix of the stuff that can be found in the + // Qt's TFP implementation in /src/opengl/qgl_x11egl.cpp ::bindiTextureFromNativePixmap + QX11PixmapData *pixmapData = static_cast<QX11PixmapData*>(backingX11Pixmap->data_ptr().data()); + Q_ASSERT(pixmapData->classId() == QPixmapData::X11Class); + bool hasAlpha = pixmapData->hasAlphaChannel(); + + if (pixmapData->gl_surface && + hasAlpha == (pixmapData->flags & QX11PixmapData::GlSurfaceCreatedWithAlpha)) + return pixmapData->gl_surface; + + // Check to see if the surface is still valid + if (pixmapData->gl_surface && + hasAlpha != ((pixmapData->flags & QX11PixmapData::GlSurfaceCreatedWithAlpha) > 0)) { + // Surface is invalid! + destroySurfaceForPixmapData(pixmapData); + } + + if (pixmapData->gl_surface == 0) { + EGLConfig config = QEgl::defaultConfig(QInternal::Pixmap, + QEgl::OpenGL, + hasAlpha ? QEgl::Translucent : QEgl::NoOptions); + + pixmapData->gl_surface = (void*)QEgl::createSurface(backingX11Pixmap, config); + + if (hasAlpha) + pixmapData->flags |= QX11PixmapData::GlSurfaceCreatedWithAlpha; + else + pixmapData->flags &= ~QX11PixmapData::GlSurfaceCreatedWithAlpha; + + if (pixmapData->gl_surface == (void*)EGL_NO_SURFACE) + return NULL; + } + + return pixmapData->gl_surface; +} + +void QMeeGoLivePixmapData::destroySurfaceForPixmapData(QPixmapData* pmd) +{ + Q_ASSERT(pmd->classId() == QPixmapData::X11Class); + QX11PixmapData *pixmapData = static_cast<QX11PixmapData*>(pmd); + if (pixmapData->gl_surface) { + eglDestroySurface(QEgl::display(), (EGLSurface)pixmapData->gl_surface); + pixmapData->gl_surface = 0; + } +} |