Segment qimage conversion block irrelevant of depth
Always try segments from 64k to 128k pixels, this matches qimagescale logic, and gives a one percent speedup locally. Change-Id: I3ef468eac9dca4b84f04850e970f3d15a4f16255 Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
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@ -4826,7 +4826,7 @@ void QImage::applyColorTransform(const QColorTransform &transform)
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}
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#if QT_CONFIG(thread) && !defined(Q_OS_WASM)
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int segments = sizeInBytes() / (1<<16);
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int segments = (qsizetype(width()) * height()) >> 16;
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segments = std::min(segments, height());
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QThreadPool *threadPool = QThreadPool::globalInstance();
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if (segments > 1 && threadPool && !threadPool->contains(QThread::currentThread())) {
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@ -234,7 +234,7 @@ void convert_generic(QImageData *dest, const QImageData *src, Qt::ImageConversio
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};
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#ifdef QT_USE_THREAD_PARALLEL_IMAGE_CONVERSIONS
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int segments = src->nbytes / (1<<16);
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int segments = (qsizetype(src->width) * src->height) >> 16;
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segments = std::min(segments, src->height);
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QThreadPool *threadPool = QThreadPool::globalInstance();
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@ -289,7 +289,7 @@ void convert_generic_over_rgb64(QImageData *dest, const QImageData *src, Qt::Ima
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}
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};
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#ifdef QT_USE_THREAD_PARALLEL_IMAGE_CONVERSIONS
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int segments = src->nbytes / (1<<16);
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int segments = (qsizetype(src->width) * src->height) >> 16;
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segments = std::min(segments, src->height);
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QThreadPool *threadPool = QThreadPool::globalInstance();
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@ -396,7 +396,7 @@ bool convert_generic_inplace(QImageData *data, QImage::Format dst_format, Qt::Im
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}
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};
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#ifdef QT_USE_THREAD_PARALLEL_IMAGE_CONVERSIONS
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int segments = data->nbytes / (1<<16);
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int segments = (qsizetype(data->width) * data->height) >> 16;
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segments = std::min(segments, data->height);
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QThreadPool *threadPool = QThreadPool::globalInstance();
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if (segments > 1 && threadPool && !threadPool->contains(QThread::currentThread())) {
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@ -490,7 +490,7 @@ bool convert_generic_inplace_over_rgb64(QImageData *data, QImage::Format dst_for
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}
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};
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#ifdef QT_USE_THREAD_PARALLEL_IMAGE_CONVERSIONS
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int segments = data->nbytes / (1<<16);
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int segments = (qsizetype(data->width) * data->height) >> 16;
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segments = std::min(segments, data->height);
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QThreadPool *threadPool = QThreadPool::globalInstance();
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if (segments > 1 && threadPool && !threadPool->contains(QThread::currentThread())) {
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