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-rw-r--r--src/opengl/qglpaintdevice.cpp239
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diff --git a/src/opengl/qglpaintdevice.cpp b/src/opengl/qglpaintdevice.cpp
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--- a/src/opengl/qglpaintdevice.cpp
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-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the QtOpenGL module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 3 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL3 included in the
-** packaging of this file. Please review the following information to
-** ensure the GNU Lesser General Public License version 3 requirements
-** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 2.0 or (at your option) the GNU General
-** Public license version 3 or any later version approved by the KDE Free
-** Qt Foundation. The licenses are as published by the Free Software
-** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
-** included in the packaging of this file. Please review the following
-** information to ensure the GNU General Public License requirements will
-** be met: https://www.gnu.org/licenses/gpl-2.0.html and
-** https://www.gnu.org/licenses/gpl-3.0.html.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include <private/qglpaintdevice_p.h>
-#include <private/qgl_p.h>
-#include <private/qglpixelbuffer_p.h>
-#include <private/qglframebufferobject_p.h>
-#include <qopenglfunctions.h>
-#include <qwindow.h>
-
-QT_BEGIN_NAMESPACE
-
-QGLPaintDevice::QGLPaintDevice()
- : m_thisFBO(0)
-{
-}
-
-QGLPaintDevice::~QGLPaintDevice()
-{
-}
-
-int QGLPaintDevice::metric(QPaintDevice::PaintDeviceMetric metric) const
-{
- switch(metric) {
- case PdmWidth:
- return size().width();
- case PdmHeight:
- return size().height();
- case PdmDepth: {
- const QGLFormat f = format();
- return f.redBufferSize() + f.greenBufferSize() + f.blueBufferSize() + f.alphaBufferSize();
- }
- case PdmDevicePixelRatio:
- return 1;
- case PdmDevicePixelRatioScaled:
- return 1 * QPaintDevice::devicePixelRatioFScale();
- default:
- qWarning("QGLPaintDevice::metric() - metric %d not known", metric);
- return 0;
- }
-}
-
-void QGLPaintDevice::beginPaint()
-{
- // Make sure our context is the current one:
- QGLContext *ctx = context();
- ctx->makeCurrent();
-
- ctx->d_func()->refreshCurrentFbo();
-
- // Record the currently bound FBO so we can restore it again
- // in endPaint() and bind this device's FBO
- //
- // Note: m_thisFBO could be zero if the paint device is not
- // backed by an FBO (e.g. window back buffer). But there could
- // be a previous FBO bound to the context which we need to
- // explicitly unbind. Otherwise the painting will go into
- // the previous FBO instead of to the window.
- m_previousFBO = ctx->d_func()->current_fbo;
-
- if (m_previousFBO != m_thisFBO) {
- ctx->d_func()->setCurrentFbo(m_thisFBO);
- ctx->contextHandle()->functions()->glBindFramebuffer(GL_FRAMEBUFFER, m_thisFBO);
- }
-
- // Set the default fbo for the context to m_thisFBO so that
- // if some raw GL code between beginNativePainting() and
- // endNativePainting() calls QGLFramebufferObject::release(),
- // painting will revert to the window surface's fbo.
- ctx->d_ptr->default_fbo = m_thisFBO;
-}
-
-void QGLPaintDevice::ensureActiveTarget()
-{
- QGLContext* ctx = context();
- if (ctx != QGLContext::currentContext())
- ctx->makeCurrent();
-
- ctx->d_func()->refreshCurrentFbo();
-
- if (ctx->d_ptr->current_fbo != m_thisFBO) {
- ctx->d_func()->setCurrentFbo(m_thisFBO);
- ctx->contextHandle()->functions()->glBindFramebuffer(GL_FRAMEBUFFER, m_thisFBO);
- }
-
- ctx->d_ptr->default_fbo = m_thisFBO;
-}
-
-void QGLPaintDevice::endPaint()
-{
- // Make sure the FBO bound at beginPaint is re-bound again here:
- QGLContext *ctx = context();
- ctx->makeCurrent();
-
- ctx->d_func()->refreshCurrentFbo();
-
- if (m_previousFBO != ctx->d_func()->current_fbo) {
- ctx->d_func()->setCurrentFbo(m_previousFBO);
- ctx->contextHandle()->functions()->glBindFramebuffer(GL_FRAMEBUFFER, m_previousFBO);
- }
-
- ctx->d_ptr->default_fbo = 0;
-}
-
-QGLFormat QGLPaintDevice::format() const
-{
- return context()->format();
-}
-
-bool QGLPaintDevice::alphaRequested() const
-{
- return context()->d_func()->reqFormat.alpha();
-}
-
-bool QGLPaintDevice::isFlipped() const
-{
- return false;
-}
-
-////////////////// QGLWidgetGLPaintDevice //////////////////
-
-QGLWidgetGLPaintDevice::QGLWidgetGLPaintDevice()
-{
-}
-
-QPaintEngine* QGLWidgetGLPaintDevice::paintEngine() const
-{
- return glWidget->paintEngine();
-}
-
-void QGLWidgetGLPaintDevice::setWidget(QGLWidget* w)
-{
- glWidget = w;
-}
-
-void QGLWidgetGLPaintDevice::beginPaint()
-{
- QGLPaintDevice::beginPaint();
- QOpenGLFunctions *funcs = QOpenGLContext::currentContext()->functions();
- if (!glWidget->d_func()->disable_clear_on_painter_begin && glWidget->autoFillBackground()) {
- if (glWidget->testAttribute(Qt::WA_TranslucentBackground))
- funcs->glClearColor(0.0, 0.0, 0.0, 0.0);
- else {
- const QColor &c = glWidget->palette().brush(glWidget->backgroundRole()).color();
- float alpha = c.alphaF();
- funcs->glClearColor(c.redF() * alpha, c.greenF() * alpha, c.blueF() * alpha, alpha);
- }
- if (context()->d_func()->workaround_needsFullClearOnEveryFrame)
- funcs->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
- else
- funcs->glClear(GL_COLOR_BUFFER_BIT);
- }
-}
-
-void QGLWidgetGLPaintDevice::endPaint()
-{
- if (glWidget->autoBufferSwap())
- glWidget->swapBuffers();
- QGLPaintDevice::endPaint();
-}
-
-
-QSize QGLWidgetGLPaintDevice::size() const
-{
- return glWidget->size() * (glWidget->windowHandle() ?
- glWidget->windowHandle()->devicePixelRatio() : qApp->devicePixelRatio());
-}
-
-QGLContext* QGLWidgetGLPaintDevice::context() const
-{
- return const_cast<QGLContext*>(glWidget->context());
-}
-
-// returns the QGLPaintDevice for the given QPaintDevice
-QGLPaintDevice* QGLPaintDevice::getDevice(QPaintDevice* pd)
-{
- QGLPaintDevice* glpd = 0;
-
- switch(pd->devType()) {
- case QInternal::Widget:
- // Should not be called on a non-gl widget:
- Q_ASSERT(qobject_cast<QGLWidget*>(static_cast<QWidget*>(pd)));
- glpd = &(static_cast<QGLWidget*>(pd)->d_func()->glDevice);
- break;
- case QInternal::Pbuffer:
- glpd = &(static_cast<QGLPixelBuffer*>(pd)->d_func()->glDevice);
- break;
- case QInternal::FramebufferObject:
- glpd = &(static_cast<QGLFramebufferObject*>(pd)->d_func()->glDevice);
- break;
- case QInternal::Pixmap: {
- qWarning("Pixmap type not supported for GL rendering");
- break;
- }
- default:
- qWarning("QGLPaintDevice::getDevice() - Unknown device type %d", pd->devType());
- break;
- }
-
- return glpd;
-}
-
-QT_END_NAMESPACE
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