diff options
Diffstat (limited to 'src/opengl/qwindowsurface_gl.cpp')
| -rw-r--r-- | src/opengl/qwindowsurface_gl.cpp | 1104 |
1 files changed, 0 insertions, 1104 deletions
diff --git a/src/opengl/qwindowsurface_gl.cpp b/src/opengl/qwindowsurface_gl.cpp deleted file mode 100644 index d3e7e5178e..0000000000 --- a/src/opengl/qwindowsurface_gl.cpp +++ /dev/null @@ -1,1104 +0,0 @@ -/**************************************************************************** -** -** 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 QtOpenGL module 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 <QtWidgets/QApplication> -#include <QtGui/QColormap> -#include <QtWidgets/QDesktopWidget> -#include <QtGui/QPaintDevice> -#include <QtWidgets/QWidget> - -#include <qglframebufferobject.h> -#include <qglpixelbuffer.h> -#include <qcolormap.h> -#include <qdesktopwidget.h> -#include <private/qwidget_p.h> -#include "qdebug.h" - -#ifdef Q_WS_X11 -#include <private/qt_x11_p.h> -#include <qx11info_x11.h> - -#ifndef QT_OPENGL_ES -#include <GL/glx.h> -#include <X11/Xlib.h> -#endif -#endif //Q_WS_X11 - -#include <private/qglextensions_p.h> -#include <private/qwindowsurface_gl_p.h> - -#include <private/qgl_p.h> - -#include <private/qglpixelbuffer_p.h> - -#include <private/qpaintengineex_opengl2_p.h> -#include <private/qpixmapdata_gl_p.h> - -#ifndef QT_OPENGL_ES_2 -#include <private/qpaintengine_opengl_p.h> -#endif - -#ifndef GLX_ARB_multisample -#define GLX_SAMPLE_BUFFERS_ARB 100000 -#define GLX_SAMPLES_ARB 100001 -#endif - -#ifndef QT_NO_EGL -#include <private/qeglcontext_p.h> -#endif - -#ifdef Q_WS_QPA -#include <qplatformscreen_qpa.h> -#endif - -QT_BEGIN_NAMESPACE - -// -// QGLWindowSurface -// -class QGLGlobalShareWidget -{ -public: - QGLGlobalShareWidget() : firstPixmap(0), widgetRefCount(0), widget(0), initializing(false) { - created = true; - } - - QGLWidget *shareWidget() { - if (!initializing && !widget && !cleanedUp) { - initializing = true; - widget = new QGLWidget(QGLFormat(QGL::SingleBuffer | QGL::NoDepthBuffer | QGL::NoStencilBuffer)); - widget->resize(1, 1); - - // We don't need this internal widget to appear in QApplication::topLevelWidgets() - if (QWidgetPrivate::allWidgets) - QWidgetPrivate::allWidgets->remove(widget); - initializing = false; - } - return widget; - } - - // destroys the share widget and prevents recreation - void cleanup() { - QGLWidget *w = widget; - cleanedUp = true; - widget = 0; - delete w; - } - - // destroys the share widget, but allows it to be recreated later on - void destroy() { - if (cleanedUp) - return; - - QGLWidget *w = widget; - - // prevent potential recursions - cleanedUp = true; - widget = 0; - delete w; - cleanedUp = false; - } - - static bool cleanedUp; - static bool created; - - QGLPixmapData *firstPixmap; - int widgetRefCount; - -private: - QGLWidget *widget; - bool initializing; -}; - -bool QGLGlobalShareWidget::cleanedUp = false; -bool QGLGlobalShareWidget::created = false; - -static void qt_cleanup_gl_share_widget(); -Q_GLOBAL_STATIC_WITH_INITIALIZER(QGLGlobalShareWidget, _qt_gl_share_widget, - { - qAddPostRoutine(qt_cleanup_gl_share_widget); - }) - -static void qt_cleanup_gl_share_widget() -{ - if (QGLGlobalShareWidget::created) - _qt_gl_share_widget()->cleanup(); -} - -QGLWidget* qt_gl_share_widget() -{ - if (QGLGlobalShareWidget::cleanedUp) - return 0; - return _qt_gl_share_widget()->shareWidget(); -} - -void qt_destroy_gl_share_widget() -{ - if (QGLGlobalShareWidget::created) - _qt_gl_share_widget()->destroy(); -} - -const QGLContext *qt_gl_share_context() -{ - QGLWidget *widget = qt_gl_share_widget(); - if (widget) - return widget->context(); - return 0; -} - -#ifdef QGL_USE_TEXTURE_POOL -void qt_gl_register_pixmap(QGLPixmapData *pd) -{ - QGLGlobalShareWidget *shared = _qt_gl_share_widget(); - pd->next = shared->firstPixmap; - pd->prev = 0; - if (shared->firstPixmap) - shared->firstPixmap->prev = pd; - shared->firstPixmap = pd; -} - -void qt_gl_unregister_pixmap(QGLPixmapData *pd) -{ - if (pd->next) - pd->next->prev = pd->prev; - if (pd->prev) { - pd->prev->next = pd->next; - } else { - QGLGlobalShareWidget *shared = _qt_gl_share_widget(); - if (shared) - shared->firstPixmap = pd->next; - } -} - -void qt_gl_hibernate_pixmaps() -{ - QGLGlobalShareWidget *shared = _qt_gl_share_widget(); - - // Scan all QGLPixmapData objects in the system and hibernate them. - QGLPixmapData *pd = shared->firstPixmap; - while (pd != 0) { - pd->hibernate(); - pd = pd->next; - } -} -#endif - -struct QGLWindowSurfacePrivate -{ - QGLFramebufferObject *fbo; - QGLPixelBuffer *pb; - GLuint tex_id; - GLuint pb_tex_id; - - int tried_fbo : 1; - int tried_pb : 1; - int destructive_swap_buffers : 1; - int geometry_updated : 1; - int did_paint : 1; - - QGLContext *ctx; - - QList<QGLContext **> contexts; - - QRegion paintedRegion; - QSize size; - - QSize textureSize; - - QList<QImage> buffers; - QGLWindowSurfaceGLPaintDevice glDevice; - QGLWindowSurface* q_ptr; - - bool swap_region_support; -}; - -QGLFormat QGLWindowSurface::surfaceFormat; -QGLWindowSurface::SwapMode QGLWindowSurface::swapBehavior = QGLWindowSurface::AutomaticSwap; - -void QGLWindowSurfaceGLPaintDevice::endPaint() -{ - glFlush(); - QGLPaintDevice::endPaint(); -} - -QSize QGLWindowSurfaceGLPaintDevice::size() const -{ - return d->size; -} - -QGLContext* QGLWindowSurfaceGLPaintDevice::context() const -{ - return d->ctx; -} - - -int QGLWindowSurfaceGLPaintDevice::metric(PaintDeviceMetric m) const -{ - QWindow *window = d->q_ptr->window(); - QPlatformScreen *screen = QPlatformScreen::platformScreenForWindow(window); - if (!screen) { - if (m == PdmDpiX || m == PdmDpiY) - return 72; - } - int val; - if (m == PdmWidth) { - val = window->geometry().width(); - } else if (m == PdmWidthMM) { - val = window->geometry().width() * screen->physicalSize().width() / screen->geometry().width(); - } else if (m == PdmHeight) { - val = window->geometry().height(); - } else if (m == PdmHeightMM) { - val = window->geometry().height() * screen->physicalSize().height() / screen->geometry().height(); - } else if (m == PdmDepth) { - val = screen->depth(); - } else if (m == PdmDpiX || m == PdmPhysicalDpiX) { - val = qRound(screen->geometry().width() / double(screen->physicalSize().width() / 25.4)); - } else if (m == PdmDpiY || m == PdmPhysicalDpiY) { - val = qRound(screen->geometry().height() / double(screen->physicalSize().height() / 25.4)); - } else { - val = 1 << qMax(24, screen->depth()); - } - return val; -} - -QPaintEngine *QGLWindowSurfaceGLPaintDevice::paintEngine() const -{ - return qt_qgl_paint_engine(); -} - -QGLWindowSurface::QGLWindowSurface(QWindow *window) - : QWindowSurface(window), d_ptr(new QGLWindowSurfacePrivate) -{ -// Q_ASSERT(window->isTopLevel()); - d_ptr->pb = 0; - d_ptr->fbo = 0; - d_ptr->ctx = 0; - d_ptr->tex_id = 0; -#if defined (QT_OPENGL_ES_2) - d_ptr->tried_fbo = true; - d_ptr->tried_pb = true; -#else - d_ptr->tried_fbo = false; - d_ptr->tried_pb = false; -#endif - d_ptr->destructive_swap_buffers = qgetenv("QT_GL_SWAPBUFFER_PRESERVE").isNull(); - d_ptr->glDevice.d = d_ptr; - d_ptr->q_ptr = this; - d_ptr->geometry_updated = false; - d_ptr->did_paint = false; - d_ptr->swap_region_support = false; -} - -QGLWindowSurface::~QGLWindowSurface() -{ - if (d_ptr->ctx) - glDeleteTextures(1, &d_ptr->tex_id); -#ifndef Q_WS_QPA // Dont delete the contexts. Destroying the window does that for us - foreach(QGLContext **ctx, d_ptr->contexts) { - delete *ctx; - *ctx = 0; - } -#endif - delete d_ptr->pb; - delete d_ptr->fbo; - delete d_ptr; - - if (QGLGlobalShareWidget::cleanedUp) - return; - - --(_qt_gl_share_widget()->widgetRefCount); - -#ifdef QGL_USE_TEXTURE_POOL - if (_qt_gl_share_widget()->widgetRefCount <= 0) { - // All of the widget window surfaces have been destroyed - // but we still have GL pixmaps active. Ask them to hibernate - // to free up GPU resources until a widget is shown again. - // This may eventually cause the EGLContext to be destroyed - // because nothing in the system needs a context, which will - // free up even more GPU resources. - qt_gl_hibernate_pixmaps(); - - // Destroy the context if necessary. - if (!qt_gl_share_widget()->context()->isSharing()) - qt_destroy_gl_share_widget(); - } -#endif // QGL_USE_TEXTURE_POOL -} - -void QGLWindowSurface::deleted(QObject *object) -{ -#if 0 - QWidget *widget = qobject_cast<QWidget *>(object); - if (widget) { - if (widget == window()) { - // Make sure that the fbo is destroyed before destroying its context. - delete d_ptr->fbo; - d_ptr->fbo = 0; - } - -#ifndef Q_WS_QPA //no need to specifically delete the QGLContext as it will be deleted by QWidget - QWidgetPrivate *widgetPrivate = widget->d_func(); - if (widgetPrivate->extraData()) { - union { QGLContext **ctxPtrPtr; void **voidPtrPtr; }; - voidPtrPtr = &widgetPrivate->extraData()->glContext; - int index = d_ptr->contexts.indexOf(ctxPtrPtr); - if (index != -1) { - delete *ctxPtrPtr; - *ctxPtrPtr = 0; - d_ptr->contexts.removeAt(index); - } - } -#endif - } -#endif -} - -void QGLWindowSurface::hijackWindow(QWindow *window) -{ -#if 0 - QWidgetPrivate *widgetPrivate = widget->d_func(); - widgetPrivate->createExtra(); - if (widgetPrivate->extraData()->glContext) - return; - - QGLContext *ctx = NULL; - - // For translucent top-level widgets we need alpha in the format. - if (widget->testAttribute(Qt::WA_TranslucentBackground)) { - QGLFormat modFormat(surfaceFormat); - modFormat.setSampleBuffers(false); - modFormat.setSamples(0); - modFormat.setAlpha(true); - ctx = new QGLContext(modFormat, widget); - } else - ctx = new QGLContext(surfaceFormat, widget); - - ctx->create(qt_gl_share_context()); - - if (widget != qt_gl_share_widget()) - ++(_qt_gl_share_widget()->widgetRefCount); - -#ifndef QT_NO_EGL - static bool checkedForNOKSwapRegion = false; - static bool haveNOKSwapRegion = false; - - if (!checkedForNOKSwapRegion) { - haveNOKSwapRegion = QEgl::hasExtension("EGL_NOK_swap_region2"); - checkedForNOKSwapRegion = true; - - if (haveNOKSwapRegion) - qDebug() << "Found EGL_NOK_swap_region2 extension. Using partial updates."; - } - - d_ptr->destructive_swap_buffers = true; - if (ctx->d_func()->eglContext->configAttrib(EGL_SURFACE_TYPE)&EGL_SWAP_BEHAVIOR_PRESERVED_BIT) { - EGLint swapBehavior; - if (eglQuerySurface(ctx->d_func()->eglContext->display(), ctx->d_func()->eglSurface - , EGL_SWAP_BEHAVIOR, &swapBehavior)) { - d_ptr->destructive_swap_buffers = (swapBehavior != EGL_BUFFER_PRESERVED); - } - } - - d_ptr->swap_region_support = haveNOKSwapRegion; -#endif - - widgetPrivate->extraData()->glContext = ctx; - - union { QGLContext **ctxPtrPtr; void **voidPtrPtr; }; - - connect(widget, SIGNAL(destroyed(QObject*)), this, SLOT(deleted(QObject*))); - - voidPtrPtr = &widgetPrivate->extraData()->glContext; - d_ptr->contexts << ctxPtrPtr; -#ifndef Q_OS_SYMBIAN - qDebug() << "hijackWindow() context created for" << widget << d_ptr->contexts.size(); -#endif -#endif -} - -QGLContext *QGLWindowSurface::context() const -{ - return d_ptr->ctx; -} - -QPaintDevice *QGLWindowSurface::paintDevice() -{ - updateGeometry(); - - if (d_ptr->pb) - return d_ptr->pb; - - if (d_ptr->ctx) - return &d_ptr->glDevice; - -#if 0 - QGLContext *ctx = reinterpret_cast<QGLContext *>(window()->d_func()->extraData()->glContext); - ctx->makeCurrent(); -#endif - - Q_ASSERT(d_ptr->fbo); - return d_ptr->fbo; -} - -static void drawTexture(const QRectF &rect, GLuint tex_id, const QSize &texSize, const QRectF &src = QRectF()); - -void QGLWindowSurface::beginPaint(const QRegion &) -{ - d_ptr->did_paint = true; - updateGeometry(); - - int clearFlags = 0; - -#if 0 - QGLContext *ctx = reinterpret_cast<QGLContext *>(window()->d_func()->extraData()->glContext); -#endif - const QGLContext *ctx = QGLContext::currentContext(); - - if (!ctx) - return; - - if (ctx->d_func()->workaround_needsFullClearOnEveryFrame) - clearFlags = GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT; - else if (ctx->format().alpha()) - clearFlags = GL_COLOR_BUFFER_BIT; - - if (clearFlags) { - if (d_ptr->fbo) - d_ptr->fbo->bind(); - - glClearColor(0.0, 0.0, 0.0, 0.0); - glClear(clearFlags); - - if (d_ptr->fbo) - d_ptr->fbo->release(); - } -} - -void QGLWindowSurface::endPaint(const QRegion &rgn) -{ - if (context()) - d_ptr->paintedRegion |= rgn; - - d_ptr->buffers.clear(); -} - -static void blitTexture(QGLContext *ctx, GLuint texture, const QSize &viewport, const QSize &texSize, const QRect &targetRect, const QRect &sourceRect) -{ - glDisable(GL_DEPTH_TEST); - glDisable(GL_SCISSOR_TEST); - glDisable(GL_BLEND); - - glViewport(0, 0, viewport.width(), viewport.height()); - - QGLShaderProgram *blitProgram = - QGLEngineSharedShaders::shadersForContext(ctx)->blitProgram(); - blitProgram->bind(); - blitProgram->setUniformValue("imageTexture", 0 /*QT_IMAGE_TEXTURE_UNIT*/); - - // The shader manager's blit program does not multiply the - // vertices by the pmv matrix, so we need to do the effect - // of the orthographic projection here ourselves. - QRectF r; - qreal w = viewport.width(); - qreal h = viewport.height(); - r.setLeft((targetRect.left() / w) * 2.0f - 1.0f); - if (targetRect.right() == (viewport.width() - 1)) - r.setRight(1.0f); - else - r.setRight((targetRect.right() / w) * 2.0f - 1.0f); - r.setBottom((targetRect.top() / h) * 2.0f - 1.0f); - if (targetRect.bottom() == (viewport.height() - 1)) - r.setTop(1.0f); - else - r.setTop((targetRect.bottom() / w) * 2.0f - 1.0f); - - drawTexture(r, texture, texSize, sourceRect); -} - - -void QGLWindowSurface::flush(QWindow *window, const QRegion &rgn, const QPoint &offset) -{ -#if 0 - //### Find out why d_ptr->geometry_updated isn't always false. - // flush() should not be called when d_ptr->geometry_updated is true. It assumes that either - // d_ptr->fbo or d_ptr->pb is allocated and has the correct size. - if (d_ptr->geometry_updated) - return; - - // did_paint is set to true in ::beginPaint. ::beginPaint means that we - // at least cleared the background (= painted something). In EGL API it's a - // mistake to call swapBuffers if nothing was painted unless - // EGL_BUFFER_PRESERVED is set. This check protects the flush func from - // being executed if it's for nothing. - if (!d_ptr->destructive_swap_buffers && !d_ptr->did_paint) - return; - -#ifdef Q_OS_SYMBIAN - if (window() != widget) { - // For performance reasons we don't support - // flushing native child widgets on Symbian. - // It breaks overlapping native child widget - // rendering in some cases but we prefer performance. - return; - } -#endif - - - QWidget *parent = widget->internalWinId() ? widget : widget->nativeParentWidget(); - Q_ASSERT(parent); - -#if !defined(Q_WS_QPA) - if (!geometry().isValid()) - return; -#else - if (!size().isValid()) - return; -#endif - - // Needed to support native child-widgets... - hijackWindow(parent); - - QRect br = rgn.boundingRect().translated(offset); - br = br.intersected(window()->rect()); - QPoint wOffset = qt_qwidget_data(parent)->wrect.topLeft(); - QRect rect = br.translated(-offset - wOffset); - - const GLenum target = GL_TEXTURE_2D; - Q_UNUSED(target); - - if (QGLWindowSurface::swapBehavior == QGLWindowSurface::KillSwap) - return; - - if (context()) { - context()->makeCurrent(); - - if (context()->format().doubleBuffer()) { -#if !defined(QT_OPENGL_ES_2) - if (d_ptr->destructive_swap_buffers) { - glBindTexture(target, d_ptr->tex_id); - - QVector<QRect> rects = d_ptr->paintedRegion.rects(); - for (int i = 0; i < rects.size(); ++i) { - QRect br = rects.at(i); - if (br.isEmpty()) - continue; - - const uint bottom = window()->height() - (br.y() + br.height()); - glCopyTexSubImage2D(target, 0, br.x(), bottom, br.x(), bottom, br.width(), br.height()); - } - - glBindTexture(target, 0); - - QRegion dirtyRegion = QRegion(window()->rect()) - d_ptr->paintedRegion; - - if (!dirtyRegion.isEmpty()) { - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); - - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); -#ifndef QT_OPENGL_ES - glOrtho(0, window()->width(), window()->height(), 0, -999999, 999999); -#else - glOrthof(0, window()->width(), window()->height(), 0, -999999, 999999); -#endif - glViewport(0, 0, window()->width(), window()->height()); - - QVector<QRect> rects = dirtyRegion.rects(); - glColor4f(1, 1, 1, 1); - for (int i = 0; i < rects.size(); ++i) { - QRect rect = rects.at(i); - if (rect.isEmpty()) - continue; - - drawTexture(rect, d_ptr->tex_id, window()->size(), rect); - } - } - } -#endif - bool doingPartialUpdate = false; - if (d_ptr->swap_region_support) { - if (QGLWindowSurface::swapBehavior == QGLWindowSurface::AutomaticSwap) - doingPartialUpdate = br.width() * br.height() < parent->geometry().width() * parent->geometry().height() * 0.2; - else if (QGLWindowSurface::swapBehavior == QGLWindowSurface::AlwaysPartialSwap) - doingPartialUpdate = true; - } - - QGLContext *ctx = reinterpret_cast<QGLContext *>(parent->d_func()->extraData()->glContext); - if (widget != window()) { - if (initializeOffscreenTexture(window()->size())) - qWarning() << "QGLWindowSurface: Flushing to native child widget, may lead to significant performance loss"; - glBindTexture(target, d_ptr->tex_id); - - const uint bottom = window()->height() - (br.y() + br.height()); - glCopyTexSubImage2D(target, 0, br.x(), bottom, br.x(), bottom, br.width(), br.height()); - - glBindTexture(target, 0); - - ctx->makeCurrent(); - if (doingPartialUpdate) - blitTexture(ctx, d_ptr->tex_id, parent->size(), window()->size(), rect, br); - else - blitTexture(ctx, d_ptr->tex_id, parent->size(), window()->size(), parent->rect(), parent->rect().translated(offset + wOffset)); - } - - if (doingPartialUpdate) - ctx->d_func()->swapRegion(br); - else - ctx->swapBuffers(); - - d_ptr->paintedRegion = QRegion(); - } else { - glFlush(); - } - return; - } - - QGLContext *previous_ctx = const_cast<QGLContext *>(QGLContext::currentContext()); - QGLContext *ctx = reinterpret_cast<QGLContext *>(parent->d_func()->extraData()->glContext); - - // QPainter::end() should have unbound the fbo, otherwise something is very wrong... - Q_ASSERT(!d_ptr->fbo || !d_ptr->fbo->isBound()); - - if (ctx != previous_ctx) { - ctx->makeCurrent(); - } - - QSize size = widget->rect().size(); - if (d_ptr->destructive_swap_buffers && ctx->format().doubleBuffer()) { - rect = parent->rect(); - br = rect.translated(wOffset + offset); - size = parent->size(); - } - - glDisable(GL_SCISSOR_TEST); - - if (d_ptr->fbo && (QGLExtensions::glExtensions() & QGLExtensions::FramebufferBlit)) { - const int h = d_ptr->fbo->height(); - - const int sx0 = br.left(); - const int sx1 = br.left() + br.width(); - const int sy0 = h - (br.top() + br.height()); - const int sy1 = h - br.top(); - - const int tx0 = rect.left(); - const int tx1 = rect.left() + rect.width(); - const int ty0 = parent->height() - (rect.top() + rect.height()); - const int ty1 = parent->height() - rect.top(); - - if (window() == parent || d_ptr->fbo->format().samples() <= 1) { - if (ctx->d_ptr->current_fbo != 0) - glBindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT, 0); - - glBindFramebuffer(GL_READ_FRAMEBUFFER_EXT, d_ptr->fbo->handle()); - - glBlitFramebufferEXT(sx0, sy0, sx1, sy1, - tx0, ty0, tx1, ty1, - GL_COLOR_BUFFER_BIT, - GL_NEAREST); - - glBindFramebuffer(GL_READ_FRAMEBUFFER_EXT, 0); - } else { - // can't do sub-region blits with multisample FBOs - QGLFramebufferObject *temp = qgl_fbo_pool()->acquire(d_ptr->fbo->size(), QGLFramebufferObjectFormat()); - - glBindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT, temp->handle()); - glBindFramebuffer(GL_READ_FRAMEBUFFER_EXT, d_ptr->fbo->handle()); - - glBlitFramebufferEXT(0, 0, d_ptr->fbo->width(), d_ptr->fbo->height(), - 0, 0, d_ptr->fbo->width(), d_ptr->fbo->height(), - GL_COLOR_BUFFER_BIT, - GL_NEAREST); - - glBindFramebuffer(GL_READ_FRAMEBUFFER_EXT, temp->handle()); - glBindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT, 0); - - glBlitFramebufferEXT(sx0, sy0, sx1, sy1, - tx0, ty0, tx1, ty1, - GL_COLOR_BUFFER_BIT, - GL_NEAREST); - - glBindFramebuffer(GL_READ_FRAMEBUFFER_EXT, 0); - - qgl_fbo_pool()->release(temp); - } - - ctx->d_ptr->current_fbo = 0; - } -#if !defined(QT_OPENGL_ES_2) - else { - GLuint texture; - if (d_ptr->fbo) { - texture = d_ptr->fbo->texture(); - } else { - d_ptr->pb->makeCurrent(); - glBindTexture(target, d_ptr->pb_tex_id); - const uint bottom = window()->height() - (br.y() + br.height()); - glCopyTexSubImage2D(target, 0, br.x(), bottom, br.x(), bottom, br.width(), br.height()); - texture = d_ptr->pb_tex_id; - glBindTexture(target, 0); - } - - glDisable(GL_DEPTH_TEST); - - if (d_ptr->fbo) { - d_ptr->fbo->release(); - } else { - ctx->makeCurrent(); - } - - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); - - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); -#ifndef QT_OPENGL_ES - glOrtho(0, size.width(), size.height(), 0, -999999, 999999); -#else - glOrthof(0, size.width(), size.height(), 0, -999999, 999999); -#endif - glViewport(0, 0, size.width(), size.height()); - - glColor4f(1, 1, 1, 1); - drawTexture(rect, texture, window()->size(), br); - - if (d_ptr->fbo) - d_ptr->fbo->bind(); - } -#else - // OpenGL/ES 2.0 version of the fbo blit. - else if (d_ptr->fbo) { - Q_UNUSED(target); - - if (d_ptr->fbo->isBound()) - d_ptr->fbo->release(); - - blitTexture(ctx, d_ptr->fbo->texture(), size, window()->size(), rect, br); - } -#endif - - if (ctx->format().doubleBuffer()) - ctx->swapBuffers(); - else - glFlush(); -#endif - d_ptr->did_paint = false; -} - - -#if !defined(Q_WS_QPA) -void QGLWindowSurface::setGeometry(const QRect &rect) -{ - QWindowSurface::setGeometry(rect); - d_ptr->geometry_updated = true; -} -#else -void QGLWindowSurface::resize(const QSize &size) -{ - QWindowSurface::resize(size); - d_ptr->geometry_updated = true; -} -#endif - -void QGLWindowSurface::updateGeometry() { -#if 0 - if (!d_ptr->geometry_updated) - return; - d_ptr->geometry_updated = false; - - bool hijack(true); - QWidgetPrivate *wd = window()->d_func(); - if (wd->extraData() && wd->extraData()->glContext) { -#ifdef Q_OS_SYMBIAN // Symbian needs to recreate the context when native window size changes - if (d_ptr->size != geometry().size()) { - if (window() != qt_gl_share_widget()) - --(_qt_gl_share_widget()->widgetRefCount); - - delete wd->extraData()->glContext; - wd->extraData()->glContext = 0; - d_ptr->ctx = 0; - } - else -#endif - { - hijack = false; // we already have gl context for widget - } - } - - if (hijack) - hijackWindow(window()); - - QGLContext *ctx = reinterpret_cast<QGLContext *>(wd->extraData()->glContext); - -#ifdef Q_WS_MAC - ctx->updatePaintDevice(); -#endif - - QSize surfSize = geometry().size(); - - if (surfSize.width() <= 0 || surfSize.height() <= 0) - return; - - if (d_ptr->size == surfSize) - return; - - d_ptr->size = surfSize; - - if (d_ptr->ctx) { -#ifndef QT_OPENGL_ES_2 - if (d_ptr->destructive_swap_buffers) - initializeOffscreenTexture(surfSize); -#endif - return; - } - - const GLenum target = GL_TEXTURE_2D; - if (d_ptr->destructive_swap_buffers - && (QGLExtensions::glExtensions() & QGLExtensions::FramebufferObject) - && (d_ptr->fbo || !d_ptr->tried_fbo) - && qt_gl_preferGL2Engine()) - { - d_ptr->tried_fbo = true; - ctx->d_ptr->internal_context = true; - ctx->makeCurrent(); - delete d_ptr->fbo; - - QGLFramebufferObjectFormat format; - format.setAttachment(QGLFramebufferObject::CombinedDepthStencil); - format.setInternalTextureFormat(GLenum(GL_RGBA)); - format.setTextureTarget(target); - - if (QGLExtensions::glExtensions() & QGLExtensions::FramebufferBlit) - format.setSamples(8); - - d_ptr->fbo = new QGLFramebufferObject(surfSize, format); - - if (d_ptr->fbo->isValid()) { - qDebug() << "Created Window Surface FBO" << surfSize - << "with samples" << d_ptr->fbo->format().samples(); - return; - } else { - qDebug() << "QGLWindowSurface: Failed to create valid FBO, falling back"; - delete d_ptr->fbo; - d_ptr->fbo = 0; - } - } - -#if !defined(QT_OPENGL_ES_2) && !defined(Q_WS_QPA) //QPA doesn't support pixelbuffers - if (d_ptr->destructive_swap_buffers && (d_ptr->pb || !d_ptr->tried_pb)) { - d_ptr->tried_pb = true; - - if (d_ptr->pb) { - d_ptr->pb->makeCurrent(); - glDeleteTextures(1, &d_ptr->pb_tex_id); - } - - delete d_ptr->pb; - - d_ptr->pb = new QGLPixelBuffer(surfSize.width(), surfSize.height(), - QGLFormat(QGL::SampleBuffers | QGL::StencilBuffer | QGL::DepthBuffer), - qt_gl_share_widget()); - - if (d_ptr->pb->isValid()) { - qDebug() << "Created Window Surface Pixelbuffer, Sample buffers:" << d_ptr->pb->format().sampleBuffers(); - d_ptr->pb->makeCurrent(); - - glGenTextures(1, &d_ptr->pb_tex_id); - glBindTexture(target, d_ptr->pb_tex_id); - glTexImage2D(target, 0, GL_RGBA, surfSize.width(), surfSize.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, 0); - - glTexParameterf(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST); - glTexParameterf(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST); - glBindTexture(target, 0); - - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - glOrtho(0, d_ptr->pb->width(), d_ptr->pb->height(), 0, -999999, 999999); - - d_ptr->pb->d_ptr->qctx->d_func()->internal_context = true; - return; - } else { - qDebug() << "QGLWindowSurface: Failed to create valid pixelbuffer, falling back"; - delete d_ptr->pb; - d_ptr->pb = 0; - } - } -#endif // !defined(QT_OPENGL_ES_2) !defined(Q_WS_QPA) - - ctx->makeCurrent(); - -#ifndef QT_OPENGL_ES_2 - if (d_ptr->destructive_swap_buffers) - initializeOffscreenTexture(surfSize); -#endif -#ifndef Q_OS_SYMBIAN - qDebug() << "QGLWindowSurface: Using plain widget as window surface" << this; -#endif - d_ptr->ctx = ctx; - d_ptr->ctx->d_ptr->internal_context = true; -#endif -} - -bool QGLWindowSurface::initializeOffscreenTexture(const QSize &size) -{ - if (size == d_ptr->textureSize) - return false; - - glGenTextures(1, &d_ptr->tex_id); - glBindTexture(GL_TEXTURE_2D, d_ptr->tex_id); - glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, size.width(), size.height(), 0, GL_RGB, GL_UNSIGNED_BYTE, 0); - - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); - glBindTexture(GL_TEXTURE_2D, 0); - - d_ptr->textureSize = size; - return true; -} - -bool QGLWindowSurface::scroll(const QRegion &area, int dx, int dy) -{ -#if 0 - // this code randomly fails currently for unknown reasons - return false; - - if (!d_ptr->pb) - return false; - - d_ptr->pb->makeCurrent(); - - QRect br = area.boundingRect(); - -#if 0 - // ## workaround driver issue (scrolling by these deltas is unbearably slow for some reason) - // ## maybe we should use glCopyTexSubImage insteadk - if (dx == 1 || dx == -1 || dy == 1 || dy == -1 || dy == 2) - return false; - - glRasterPos2i(br.x() + dx, br.y() + br.height() + dy); - glCopyPixels(br.x(), d_ptr->pb->height() - (br.y() + br.height()), br.width(), br.height(), GL_COLOR); - return true; -#endif - - const GLenum target = GL_TEXTURE_2D; - - glBindTexture(target, d_ptr->tex_id); - glCopyTexImage2D(target, 0, GL_RGBA, br.x(), d_ptr->pb->height() - (br.y() + br.height()), br.width(), br.height(), 0); - glBindTexture(target, 0); - - drawTexture(br.translated(dx, dy), d_ptr->tex_id, window()->size()); -#endif - return true; -} - -static void drawTexture(const QRectF &rect, GLuint tex_id, const QSize &texSize, const QRectF &br) -{ - const GLenum target = GL_TEXTURE_2D; - QRectF src = br.isEmpty() - ? QRectF(QPointF(), texSize) - : QRectF(QPointF(br.x(), texSize.height() - br.bottom()), br.size()); - - if (target == GL_TEXTURE_2D) { - qreal width = texSize.width(); - qreal height = texSize.height(); - - src.setLeft(src.left() / width); - src.setRight(src.right() / width); - src.setTop(src.top() / height); - src.setBottom(src.bottom() / height); - } - - const GLfloat tx1 = src.left(); - const GLfloat tx2 = src.right(); - const GLfloat ty1 = src.top(); - const GLfloat ty2 = src.bottom(); - - GLfloat texCoordArray[4*2] = { - tx1, ty2, tx2, ty2, tx2, ty1, tx1, ty1 - }; - - GLfloat vertexArray[4*2]; - extern void qt_add_rect_to_array(const QRectF &r, GLfloat *array); // qpaintengine_opengl.cpp - qt_add_rect_to_array(rect, vertexArray); - -#if !defined(QT_OPENGL_ES_2) - glVertexPointer(2, GL_FLOAT, 0, vertexArray); - glTexCoordPointer(2, GL_FLOAT, 0, texCoordArray); - - glBindTexture(target, tex_id); - glEnable(target); - - glEnableClientState(GL_VERTEX_ARRAY); - glEnableClientState(GL_TEXTURE_COORD_ARRAY); - glDrawArrays(GL_TRIANGLE_FAN, 0, 4); - glDisableClientState(GL_VERTEX_ARRAY); - glDisableClientState(GL_TEXTURE_COORD_ARRAY); - - glDisable(target); - glBindTexture(target, 0); -#else - glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, vertexArray); - glVertexAttribPointer(QT_TEXTURE_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, texCoordArray); - - glBindTexture(target, tex_id); - - glEnableVertexAttribArray(QT_VERTEX_COORDS_ATTR); - glEnableVertexAttribArray(QT_TEXTURE_COORDS_ATTR); - glDrawArrays(GL_TRIANGLE_FAN, 0, 4); - glDisableVertexAttribArray(QT_VERTEX_COORDS_ATTR); - glDisableVertexAttribArray(QT_TEXTURE_COORDS_ATTR); - - glBindTexture(target, 0); -#endif -} - -QWindowSurface::WindowSurfaceFeatures QGLWindowSurface::features() const -{ - WindowSurfaceFeatures features = 0; - if (!d_ptr->destructive_swap_buffers || d_ptr->swap_region_support) - features |= PartialUpdates; - if (!d_ptr->destructive_swap_buffers) - features |= PreservedContents; - return features; -} - -QT_END_NAMESPACE - |