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Diffstat (limited to 'src/opengl/qpixmapdata_poolgl.cpp')
| -rw-r--r-- | src/opengl/qpixmapdata_poolgl.cpp | 934 |
1 files changed, 934 insertions, 0 deletions
diff --git a/src/opengl/qpixmapdata_poolgl.cpp b/src/opengl/qpixmapdata_poolgl.cpp new file mode 100644 index 0000000..64de29e --- /dev/null +++ b/src/opengl/qpixmapdata_poolgl.cpp @@ -0,0 +1,934 @@ +/**************************************************************************** +** +** 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. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 "qpixmap.h" +#include "qglframebufferobject.h" + +#include <private/qpaintengine_raster_p.h> + +#include "qpixmapdata_gl_p.h" + +#include <private/qgl_p.h> +#include <private/qdrawhelper_p.h> +#include <private/qimage_p.h> + +#include <private/qpaintengineex_opengl2_p.h> + +#include <qdesktopwidget.h> +#include <qfile.h> +#include <qimagereader.h> +#include <qbuffer.h> + +#include "qgltexturepool_p.h" + +QT_BEGIN_NAMESPACE + +Q_OPENGL_EXPORT extern QGLWidget* qt_gl_share_widget(); + +/*! + \class QGLFramebufferObjectPool + \since 4.6 + + \brief The QGLFramebufferObject class provides a pool of framebuffer + objects for offscreen rendering purposes. + + When requesting an FBO of a given size and format, an FBO of the same + format and a size at least as big as the requested size will be returned. + + \internal +*/ + +static inline int areaDiff(const QSize &size, const QGLFramebufferObject *fbo) +{ + return qAbs(size.width() * size.height() - fbo->width() * fbo->height()); +} + +extern int qt_next_power_of_two(int v); + +static inline QSize maybeRoundToNextPowerOfTwo(const QSize &sz) +{ +#ifdef QT_OPENGL_ES_2 + QSize rounded(qt_next_power_of_two(sz.width()), qt_next_power_of_two(sz.height())); + if (rounded.width() * rounded.height() < 1.20 * sz.width() * sz.height()) + return rounded; +#endif + return sz; +} + + +QGLFramebufferObject *QGLFramebufferObjectPool::acquire(const QSize &requestSize, const QGLFramebufferObjectFormat &requestFormat, bool strictSize) +{ + QGLFramebufferObject *chosen = 0; + QGLFramebufferObject *candidate = 0; + for (int i = 0; !chosen && i < m_fbos.size(); ++i) { + QGLFramebufferObject *fbo = m_fbos.at(i); + + if (strictSize) { + if (fbo->size() == requestSize && fbo->format() == requestFormat) { + chosen = fbo; + break; + } else { + continue; + } + } + + if (fbo->format() == requestFormat) { + // choose the fbo with a matching format and the closest size + if (!candidate || areaDiff(requestSize, candidate) > areaDiff(requestSize, fbo)) + candidate = fbo; + } + + if (candidate) { + m_fbos.removeOne(candidate); + + const QSize fboSize = candidate->size(); + QSize sz = fboSize; + + if (sz.width() < requestSize.width()) + sz.setWidth(qMax(requestSize.width(), qRound(sz.width() * 1.5))); + if (sz.height() < requestSize.height()) + sz.setHeight(qMax(requestSize.height(), qRound(sz.height() * 1.5))); + + // wasting too much space? + if (sz.width() * sz.height() > requestSize.width() * requestSize.height() * 4) + sz = requestSize; + + if (sz != fboSize) { + delete candidate; + candidate = new QGLFramebufferObject(maybeRoundToNextPowerOfTwo(sz), requestFormat); + } + + chosen = candidate; + } + } + + if (!chosen) { + if (strictSize) + chosen = new QGLFramebufferObject(requestSize, requestFormat); + else + chosen = new QGLFramebufferObject(maybeRoundToNextPowerOfTwo(requestSize), requestFormat); + } + + if (!chosen->isValid()) { + delete chosen; + chosen = 0; + } + + return chosen; +} + +void QGLFramebufferObjectPool::release(QGLFramebufferObject *fbo) +{ + if (fbo) + m_fbos << fbo; +} + + +QPaintEngine* QGLPixmapGLPaintDevice::paintEngine() const +{ + return data->paintEngine(); +} + +void QGLPixmapGLPaintDevice::beginPaint() +{ + if (!data->isValid()) + return; + + // QGLPaintDevice::beginPaint will store the current binding and replace + // it with m_thisFBO: + m_thisFBO = data->m_renderFbo->handle(); + QGLPaintDevice::beginPaint(); + + Q_ASSERT(data->paintEngine()->type() == QPaintEngine::OpenGL2); + + // QPixmap::fill() is deferred until now, where we actually need to do the fill: + if (data->needsFill()) { + const QColor &c = data->fillColor(); + float alpha = c.alphaF(); + glDisable(GL_SCISSOR_TEST); + glClearColor(c.redF() * alpha, c.greenF() * alpha, c.blueF() * alpha, alpha); + glClear(GL_COLOR_BUFFER_BIT); + } + else if (!data->isUninitialized()) { + // If the pixmap (GL Texture) has valid content (it has been + // uploaded from an image or rendered into before), we need to + // copy it from the texture to the render FBO. + + glDisable(GL_DEPTH_TEST); + glDisable(GL_SCISSOR_TEST); + glDisable(GL_BLEND); + +#if !defined(QT_OPENGL_ES_2) + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glOrtho(0, data->width(), data->height(), 0, -999999, 999999); +#endif + + glViewport(0, 0, data->width(), data->height()); + + // Pass false to bind so it doesn't copy the FBO into the texture! + context()->drawTexture(QRect(0, 0, data->width(), data->height()), data->bind(false)); + } +} + +void QGLPixmapGLPaintDevice::endPaint() +{ + if (!data->isValid()) + return; + + data->copyBackFromRenderFbo(false); + + // Base's endPaint will restore the previous FBO binding + QGLPaintDevice::endPaint(); + + qgl_fbo_pool()->release(data->m_renderFbo); + data->m_renderFbo = 0; +} + +QGLContext* QGLPixmapGLPaintDevice::context() const +{ + data->ensureCreated(); + return data->m_ctx; +} + +QSize QGLPixmapGLPaintDevice::size() const +{ + return data->size(); +} + +bool QGLPixmapGLPaintDevice::alphaRequested() const +{ + return data->m_hasAlpha; +} + +void QGLPixmapGLPaintDevice::setPixmapData(QGLPixmapData* d) +{ + data = d; +} + +int qt_gl_pixmap_serial = 0; + +QGLPixmapData::QGLPixmapData(PixelType type) + : QPixmapData(type, OpenGLClass) + , m_renderFbo(0) + , m_engine(0) + , m_ctx(0) + , m_dirty(false) + , m_hasFillColor(false) + , m_hasAlpha(false) + , inLRU(false) + , failedToAlloc(false) + , inTexturePool(false) +{ + setSerialNumber(++qt_gl_pixmap_serial); + m_glDevice.setPixmapData(this); + + qt_gl_register_pixmap(this); +} + +QGLPixmapData::~QGLPixmapData() +{ + delete m_engine; + + destroyTexture(); + qt_gl_unregister_pixmap(this); +} + +void QGLPixmapData::destroyTexture() +{ + if (inTexturePool) { + QGLTexturePool *pool = QGLTexturePool::instance(); + if (m_texture.id) + pool->releaseTexture(this, m_texture.id); + } else { + if (m_texture.id) { + QGLWidget *shareWidget = qt_gl_share_widget(); + if (shareWidget) { + QGLShareContextScope ctx(shareWidget->context()); + glDeleteTextures(1, &m_texture.id); + } + } + } + m_texture.id = 0; + inTexturePool = false; +} + +QPixmapData *QGLPixmapData::createCompatiblePixmapData() const +{ + return new QGLPixmapData(pixelType()); +} + +bool QGLPixmapData::isValid() const +{ + return w > 0 && h > 0; +} + +bool QGLPixmapData::isValidContext(const QGLContext *ctx) const +{ + if (ctx == m_ctx) + return true; + + const QGLContext *share_ctx = qt_gl_share_widget()->context(); + return ctx == share_ctx || QGLContext::areSharing(ctx, share_ctx); +} + +void QGLPixmapData::resize(int width, int height) +{ + if (width == w && height == h) + return; + + if (width <= 0 || height <= 0) { + width = 0; + height = 0; + } + + w = width; + h = height; + is_null = (w <= 0 || h <= 0); + d = pixelType() == QPixmapData::PixmapType ? 32 : 1; + + destroyTexture(); + + m_source = QVolatileImage(); + m_dirty = isValid(); + setSerialNumber(++qt_gl_pixmap_serial); +} + +void QGLPixmapData::ensureCreated() const +{ + if (!m_dirty) + return; + + m_dirty = false; + + QGLShareContextScope ctx(qt_gl_share_widget()->context()); + m_ctx = ctx; + + const GLenum internal_format = m_hasAlpha ? GL_RGBA : GL_RGB; +#ifdef QT_OPENGL_ES_2 + const GLenum external_format = internal_format; +#else + const GLenum external_format = qt_gl_preferredTextureFormat(); +#endif + const GLenum target = GL_TEXTURE_2D; + + GLenum type = GL_UNSIGNED_BYTE; + // Avoid conversion when pixmap is created from CFbsBitmap of EColor64K. + if (!m_source.isNull() && m_source.format() == QImage::Format_RGB16) + type = GL_UNSIGNED_SHORT_5_6_5; + + m_texture.options &= ~QGLContext::MemoryManagedBindOption; + + if (!m_texture.id) { + m_texture.id = QGLTexturePool::instance()->createTextureForPixmap( + target, + 0, internal_format, + w, h, + external_format, + type, + const_cast<QGLPixmapData*>(this)); + if (!m_texture.id) { + failedToAlloc = true; + return; + } + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + + inTexturePool = true; + } else if (inTexturePool) { + glBindTexture(target, m_texture.id); + QGLTexturePool::instance()->useTexture(const_cast<QGLPixmapData*>(this)); + } + + if (!m_source.isNull() && m_texture.id) { + if (external_format == GL_RGB) { + m_source.beginDataAccess(); + QImage tx; + if (type == GL_UNSIGNED_BYTE) + tx = m_source.imageRef().convertToFormat(QImage::Format_RGB888).mirrored(false, true); + else if (type == GL_UNSIGNED_SHORT_5_6_5) + tx = m_source.imageRef().mirrored(false, true); + m_source.endDataAccess(true); + + glBindTexture(target, m_texture.id); + if (!tx.isNull()) + glTexSubImage2D(target, 0, 0, 0, w, h, external_format, + type, tx.constBits()); + else + qWarning("QGLPixmapData: Failed to create GL_RGB image of size %dx%d", w, h); + } else { + // do byte swizzling ARGB -> RGBA + m_source.beginDataAccess(); + const QImage tx = ctx->d_func()->convertToGLFormat(m_source.imageRef(), true, external_format); + m_source.endDataAccess(true); + glBindTexture(target, m_texture.id); + if (!tx.isNull()) + glTexSubImage2D(target, 0, 0, 0, w, h, external_format, + type, tx.constBits()); + else + qWarning("QGLPixmapData: Failed to create GL_RGBA image of size %dx%d", w, h); + } + + if (useFramebufferObjects()) + m_source = QVolatileImage(); + } +} + + +void QGLPixmapData::fromImage(const QImage &image, + Qt::ImageConversionFlags flags) +{ + QImage img = image; + createPixmapForImage(img, flags, false); +} + +void QGLPixmapData::fromImageReader(QImageReader *imageReader, + Qt::ImageConversionFlags flags) +{ + QImage image = imageReader->read(); + if (image.isNull()) + return; + + createPixmapForImage(image, flags, true); +} + +bool QGLPixmapData::fromFile(const QString &filename, const char *format, + Qt::ImageConversionFlags flags) +{ + if (pixelType() == QPixmapData::BitmapType) + return QPixmapData::fromFile(filename, format, flags); + QFile file(filename); + if (file.open(QIODevice::ReadOnly)) { + QByteArray data = file.peek(64); + bool alpha; + if (m_texture.canBindCompressedTexture + (data.constData(), data.size(), format, &alpha)) { + resize(0, 0); + data = file.readAll(); + file.close(); + QGLShareContextScope ctx(qt_gl_share_widget()->context()); + QSize size = m_texture.bindCompressedTexture + (data.constData(), data.size(), format); + if (!size.isEmpty()) { + w = size.width(); + h = size.height(); + is_null = false; + d = 32; + m_hasAlpha = alpha; + m_source = QVolatileImage(); + m_dirty = isValid(); + return true; + } + return false; + } + } + + QImage image = QImageReader(filename, format).read(); + if (image.isNull()) + return false; + + createPixmapForImage(image, flags, true); + + return !isNull(); +} + +bool QGLPixmapData::fromData(const uchar *buffer, uint len, const char *format, + Qt::ImageConversionFlags flags) +{ + bool alpha; + const char *buf = reinterpret_cast<const char *>(buffer); + if (m_texture.canBindCompressedTexture(buf, int(len), format, &alpha)) { + resize(0, 0); + QGLShareContextScope ctx(qt_gl_share_widget()->context()); + QSize size = m_texture.bindCompressedTexture(buf, int(len), format); + if (!size.isEmpty()) { + w = size.width(); + h = size.height(); + is_null = false; + d = 32; + m_hasAlpha = alpha; + m_source = QVolatileImage(); + m_dirty = isValid(); + return true; + } + } + + QByteArray a = QByteArray::fromRawData(reinterpret_cast<const char *>(buffer), len); + QBuffer b(&a); + b.open(QIODevice::ReadOnly); + QImage image = QImageReader(&b, format).read(); + if (image.isNull()) + return false; + + createPixmapForImage(image, flags, true); + + return !isNull(); +} + +QImage::Format QGLPixmapData::idealFormat(QImage &image, Qt::ImageConversionFlags flags) +{ + QImage::Format format = QImage::Format_RGB32; + if (qApp->desktop()->depth() == 16) + format = QImage::Format_RGB16; + + if (image.hasAlphaChannel() + && ((flags & Qt::NoOpaqueDetection) + || const_cast<QImage &>(image).data_ptr()->checkForAlphaPixels())) + format = QImage::Format_ARGB32_Premultiplied; + + return format; +} + +void QGLPixmapData::createPixmapForImage(QImage &image, Qt::ImageConversionFlags flags, bool inPlace) +{ + if (image.size() == QSize(w, h)) + setSerialNumber(++qt_gl_pixmap_serial); + + resize(image.width(), image.height()); + + if (pixelType() == BitmapType) { + QImage convertedImage = image.convertToFormat(QImage::Format_MonoLSB); + if (image.format() == QImage::Format_MonoLSB) + convertedImage.detach(); + + m_source = QVolatileImage(convertedImage); + + } else { + QImage::Format format = idealFormat(image, flags); + + if (inPlace && image.data_ptr()->convertInPlace(format, flags)) { + m_source = QVolatileImage(image); + } else { + QImage convertedImage = image.convertToFormat(format); + + // convertToFormat won't detach the image if format stays the same. + if (image.format() == format) + convertedImage.detach(); + + m_source = QVolatileImage(convertedImage); + } + } + + m_dirty = true; + m_hasFillColor = false; + + m_hasAlpha = m_source.hasAlphaChannel(); + w = image.width(); + h = image.height(); + is_null = (w <= 0 || h <= 0); + d = m_source.depth(); + + destroyTexture(); +} + +bool QGLPixmapData::scroll(int dx, int dy, const QRect &rect) +{ + Q_UNUSED(dx); + Q_UNUSED(dy); + Q_UNUSED(rect); + return false; +} + +void QGLPixmapData::copy(const QPixmapData *data, const QRect &rect) +{ + if (data->classId() != QPixmapData::OpenGLClass || !static_cast<const QGLPixmapData *>(data)->useFramebufferObjects()) { + QPixmapData::copy(data, rect); + return; + } + + const QGLPixmapData *other = static_cast<const QGLPixmapData *>(data); + if (other->m_renderFbo) { + QGLShareContextScope ctx(qt_gl_share_widget()->context()); + + resize(rect.width(), rect.height()); + m_hasAlpha = other->m_hasAlpha; + ensureCreated(); + + if (!ctx->d_ptr->fbo) + glGenFramebuffers(1, &ctx->d_ptr->fbo); + + glBindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT, ctx->d_ptr->fbo); + glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, + GL_TEXTURE_2D, m_texture.id, 0); + + if (!other->m_renderFbo->isBound()) + glBindFramebuffer(GL_READ_FRAMEBUFFER_EXT, other->m_renderFbo->handle()); + + glDisable(GL_SCISSOR_TEST); + if (ctx->d_ptr->active_engine && ctx->d_ptr->active_engine->type() == QPaintEngine::OpenGL2) + static_cast<QGL2PaintEngineEx *>(ctx->d_ptr->active_engine)->invalidateState(); + + glBlitFramebufferEXT(rect.x(), rect.y(), rect.x() + rect.width(), rect.y() + rect.height(), + 0, 0, w, h, + GL_COLOR_BUFFER_BIT, + GL_NEAREST); + + glBindFramebuffer(GL_FRAMEBUFFER_EXT, ctx->d_ptr->current_fbo); + } else { + QPixmapData::copy(data, rect); + } +} + +void QGLPixmapData::fill(const QColor &color) +{ + if (!isValid()) + return; + + bool hasAlpha = color.alpha() != 255; + if (hasAlpha && !m_hasAlpha) { + if (m_texture.id) { + destroyTexture(); + m_dirty = true; + } + m_hasAlpha = color.alpha() != 255; + } + + if (useFramebufferObjects()) { + m_source = QVolatileImage(); + m_hasFillColor = true; + m_fillColor = color; + } else { + forceToImage(); + + if (m_source.depth() == 32) { + m_source.fill(PREMUL(color.rgba())); + + } else if (m_source.depth() == 1) { + if (color == Qt::color1) + m_source.fill(1); + else + m_source.fill(0); + } + } +} + +bool QGLPixmapData::hasAlphaChannel() const +{ + return m_hasAlpha; +} + +QImage QGLPixmapData::fillImage(const QColor &color) const +{ + QImage img; + if (pixelType() == BitmapType) { + img = QImage(w, h, QImage::Format_MonoLSB); + + img.setColorCount(2); + img.setColor(0, QColor(Qt::color0).rgba()); + img.setColor(1, QColor(Qt::color1).rgba()); + + if (color == Qt::color1) + img.fill(1); + else + img.fill(0); + } else { + img = QImage(w, h, + m_hasAlpha + ? QImage::Format_ARGB32_Premultiplied + : QImage::Format_RGB32); + img.fill(PREMUL(color.rgba())); + } + return img; +} + +extern QImage qt_gl_read_texture(const QSize &size, bool alpha_format, bool include_alpha); + +QImage QGLPixmapData::toImage() const +{ + if (!isValid()) + return QImage(); + + if (m_renderFbo) { + copyBackFromRenderFbo(true); + } else if (!m_source.isNull()) { + // QVolatileImage::toImage() will make a copy always so no check + // for active painting is needed. + QImage img = m_source.toImage(); + if (img.format() == QImage::Format_MonoLSB) { + img.setColorCount(2); + img.setColor(0, QColor(Qt::color0).rgba()); + img.setColor(1, QColor(Qt::color1).rgba()); + } + return img; + } else if (m_dirty || m_hasFillColor) { + return fillImage(m_fillColor); + } else { + ensureCreated(); + } + + QGLShareContextScope ctx(qt_gl_share_widget()->context()); + glBindTexture(GL_TEXTURE_2D, m_texture.id); + return qt_gl_read_texture(QSize(w, h), true, true); +} + +struct TextureBuffer +{ + QGLFramebufferObject *fbo; + QGL2PaintEngineEx *engine; +}; + +Q_GLOBAL_STATIC(QGLFramebufferObjectPool, _qgl_fbo_pool) +QGLFramebufferObjectPool* qgl_fbo_pool() +{ + return _qgl_fbo_pool(); +} + +void QGLPixmapData::copyBackFromRenderFbo(bool keepCurrentFboBound) const +{ + if (!isValid()) + return; + + m_hasFillColor = false; + + const QGLContext *share_ctx = qt_gl_share_widget()->context(); + QGLShareContextScope ctx(share_ctx); + + ensureCreated(); + + if (!ctx->d_ptr->fbo) + glGenFramebuffers(1, &ctx->d_ptr->fbo); + + glBindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT, ctx->d_ptr->fbo); + glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, + GL_TEXTURE_2D, m_texture.id, 0); + + const int x0 = 0; + const int x1 = w; + const int y0 = 0; + const int y1 = h; + + if (!m_renderFbo->isBound()) + glBindFramebuffer(GL_READ_FRAMEBUFFER_EXT, m_renderFbo->handle()); + + glDisable(GL_SCISSOR_TEST); + + glBlitFramebufferEXT(x0, y0, x1, y1, + x0, y0, x1, y1, + GL_COLOR_BUFFER_BIT, + GL_NEAREST); + + if (keepCurrentFboBound) { + glBindFramebuffer(GL_FRAMEBUFFER_EXT, ctx->d_ptr->current_fbo); + } else { + glBindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT, m_renderFbo->handle()); + ctx->d_ptr->current_fbo = m_renderFbo->handle(); + } +} + +bool QGLPixmapData::useFramebufferObjects() const +{ +#ifdef Q_OS_SYMBIAN + // We don't want to use FBOs on Symbian + return false; +#else + return QGLFramebufferObject::hasOpenGLFramebufferObjects() + && QGLFramebufferObject::hasOpenGLFramebufferBlit() + && qt_gl_preferGL2Engine() + && (w * h > 32*32); // avoid overhead of FBOs for small pixmaps +#endif +} + +QPaintEngine* QGLPixmapData::paintEngine() const +{ + if (!isValid()) + return 0; + + if (m_renderFbo) + return m_engine; + + if (useFramebufferObjects()) { + extern QGLWidget* qt_gl_share_widget(); + + if (!QGLContext::currentContext()) + qt_gl_share_widget()->makeCurrent(); + QGLShareContextScope ctx(qt_gl_share_widget()->context()); + + QGLFramebufferObjectFormat format; + format.setAttachment(QGLFramebufferObject::CombinedDepthStencil); + format.setSamples(4); + format.setInternalTextureFormat(GLenum(m_hasAlpha ? GL_RGBA : GL_RGB)); + + m_renderFbo = qgl_fbo_pool()->acquire(size(), format); + + if (m_renderFbo) { + if (!m_engine) + m_engine = new QGL2PaintEngineEx; + return m_engine; + } + + qWarning() << "Failed to create pixmap texture buffer of size " << size() << ", falling back to raster paint engine"; + } + + // If the application wants to paint into the QPixmap, we first + // force it to QImage format and then paint into that. + // This is simpler than juggling multiple GL contexts. + const_cast<QGLPixmapData *>(this)->forceToImage(); + + if (m_hasFillColor) { + m_source.fill(PREMUL(m_fillColor.rgba())); + m_hasFillColor = false; + } + return m_source.paintEngine(); +} + +extern QRgb qt_gl_convertToGLFormat(QRgb src_pixel, GLenum texture_format); + +// If copyBack is true, bind will copy the contents of the render +// FBO to the texture (which is not bound to the texture, as it's +// a multisample FBO). +GLuint QGLPixmapData::bind(bool copyBack) const +{ + if (m_renderFbo && copyBack) { + copyBackFromRenderFbo(true); + } else { + ensureCreated(); + } + + GLuint id = m_texture.id; + glBindTexture(GL_TEXTURE_2D, id); + + if (m_hasFillColor) { + if (!useFramebufferObjects()) { + m_source = QVolatileImage(w, h, QImage::Format_ARGB32_Premultiplied); + m_source.fill(PREMUL(m_fillColor.rgba())); + } + + m_hasFillColor = false; + + GLenum format = qt_gl_preferredTextureFormat(); + QImage tx(w, h, QImage::Format_ARGB32_Premultiplied); + tx.fill(qt_gl_convertToGLFormat(m_fillColor.rgba(), format)); + glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, w, h, format, GL_UNSIGNED_BYTE, tx.constBits()); + } + + return id; +} + +QGLTexture* QGLPixmapData::texture() const +{ + return &m_texture; +} + +void QGLPixmapData::detachTextureFromPool() +{ + if (inTexturePool) { + QGLTexturePool::instance()->detachTexture(this); + inTexturePool = false; + } +} + +void QGLPixmapData::hibernate() +{ + // If the texture was imported (e.g, from an SgImage under Symbian), + // then we cannot copy it back to main memory for storage. + if (m_texture.id && m_source.isNull()) + return; + + forceToImage(); + destroyTexture(); +} + +void QGLPixmapData::reclaimTexture() +{ + if (!inTexturePool) + return; + forceToImage(); + destroyTexture(); +} + +Q_GUI_EXPORT int qt_defaultDpiX(); +Q_GUI_EXPORT int qt_defaultDpiY(); + +int QGLPixmapData::metric(QPaintDevice::PaintDeviceMetric metric) const +{ + if (w == 0) + return 0; + + switch (metric) { + case QPaintDevice::PdmWidth: + return w; + case QPaintDevice::PdmHeight: + return h; + case QPaintDevice::PdmNumColors: + return 0; + case QPaintDevice::PdmDepth: + return d; + case QPaintDevice::PdmWidthMM: + return qRound(w * 25.4 / qt_defaultDpiX()); + case QPaintDevice::PdmHeightMM: + return qRound(h * 25.4 / qt_defaultDpiY()); + case QPaintDevice::PdmDpiX: + case QPaintDevice::PdmPhysicalDpiX: + return qt_defaultDpiX(); + case QPaintDevice::PdmDpiY: + case QPaintDevice::PdmPhysicalDpiY: + return qt_defaultDpiY(); + default: + qWarning("QGLPixmapData::metric(): Invalid metric"); + return 0; + } +} + +// Force the pixmap data to be backed by some valid data. +void QGLPixmapData::forceToImage() +{ + if (!isValid()) + return; + + if (m_source.isNull()) { + QImage::Format format = QImage::Format_ARGB32_Premultiplied; + if (pixelType() == BitmapType) + format = QImage::Format_MonoLSB; + m_source = QVolatileImage(w, h, format); + } + + m_dirty = true; +} + +QGLPaintDevice *QGLPixmapData::glDevice() const +{ + return &m_glDevice; +} + +QT_END_NAMESPACE |