diff options
Diffstat (limited to 'src/quick/scenegraph/util/qsgrhiatlastexture.cpp')
| -rw-r--r-- | src/quick/scenegraph/util/qsgrhiatlastexture.cpp | 490 |
1 files changed, 490 insertions, 0 deletions
diff --git a/src/quick/scenegraph/util/qsgrhiatlastexture.cpp b/src/quick/scenegraph/util/qsgrhiatlastexture.cpp new file mode 100644 index 0000000000..665e9bb412 --- /dev/null +++ b/src/quick/scenegraph/util/qsgrhiatlastexture.cpp @@ -0,0 +1,490 @@ +/**************************************************************************** +** +** Copyright (C) 2019 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtQuick 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 "qsgrhiatlastexture_p.h" + +#include <QtCore/QVarLengthArray> +#include <QtCore/QElapsedTimer> +#include <QtCore/QtMath> + +#include <QtGui/QWindow> + +#include <private/qqmlglobal_p.h> +#include <private/qquickprofiler_p.h> +#include <private/qsgdefaultrendercontext_p.h> +#include <private/qsgtexture_p.h> +#if 0 +#include <private/qsgcompressedtexture_p.h> +#include <private/qsgcompressedatlastexture_p.h> +#endif + +QT_BEGIN_NAMESPACE + +int qt_sg_envInt(const char *name, int defaultValue); + +static QElapsedTimer qsg_renderer_timer; + +//DEFINE_BOOL_CONFIG_OPTION(qsgEnableCompressedAtlas, QSG_ENABLE_COMPRESSED_ATLAS) + +namespace QSGRhiAtlasTexture +{ + +Manager::Manager(QSGDefaultRenderContext *rc, const QSize &surfacePixelSize, QSurface *maybeSurface) + : m_rc(rc) + , m_rhi(rc->rhi()) +{ + const int maxSize = m_rhi->resourceLimit(QRhi::TextureSizeMax); + int w = qMin(maxSize, qt_sg_envInt("QSG_ATLAS_WIDTH", qMax(512U, qNextPowerOfTwo(surfacePixelSize.width() - 1)))); + int h = qMin(maxSize, qt_sg_envInt("QSG_ATLAS_HEIGHT", qMax(512U, qNextPowerOfTwo(surfacePixelSize.height() - 1)))); + + if (maybeSurface && maybeSurface->surfaceClass() == QSurface::Window) { + QWindow *window = static_cast<QWindow *>(maybeSurface); + // Coverwindows, optimize for memory rather than speed + if ((window->type() & Qt::CoverWindow) == Qt::CoverWindow) { + w /= 2; + h /= 2; + } + } + + m_atlas_size_limit = qt_sg_envInt("QSG_ATLAS_SIZE_LIMIT", qMax(w, h) / 2); + m_atlas_size = QSize(w, h); + + qCDebug(QSG_LOG_INFO, "rhi texture atlas dimensions: %dx%d", w, h); +} + +Manager::~Manager() +{ + Q_ASSERT(m_atlas == nullptr); + Q_ASSERT(m_atlases.isEmpty()); +} + +void Manager::invalidate() +{ + if (m_atlas) { + m_atlas->invalidate(); + m_atlas->deleteLater(); + m_atlas = nullptr; + } + + #if 0 + QHash<unsigned int, QSGCompressedAtlasTexture::Atlas*>::iterator i = m_atlases.begin(); + while (i != m_atlases.end()) { + i.value()->invalidate(); + i.value()->deleteLater(); + ++i; + } + m_atlases.clear(); +#endif +} + +QSGTexture *Manager::create(const QImage &image, bool hasAlphaChannel) +{ + Texture *t = nullptr; + if (image.width() < m_atlas_size_limit && image.height() < m_atlas_size_limit) { + if (!m_atlas) + m_atlas = new Atlas(m_rc, m_atlas_size); + t = m_atlas->create(image); + if (t && !hasAlphaChannel && t->hasAlphaChannel()) + t->setHasAlphaChannel(false); + } + return t; +} + +QSGTexture *Manager::create(const QSGCompressedTextureFactory *factory) +{ + Q_UNUSED(factory); + return nullptr; + // ### + +#if 0 + QSGTexture *t = nullptr; + if (!qsgEnableCompressedAtlas() || !factory->m_textureData.isValid()) + return t; + + // TODO: further abstract the atlas and remove this restriction + unsigned int format = factory->m_textureData.glInternalFormat(); + switch (format) { + case QOpenGLTexture::RGB8_ETC1: + case QOpenGLTexture::RGB8_ETC2: + case QOpenGLTexture::RGBA8_ETC2_EAC: + case QOpenGLTexture::RGB8_PunchThrough_Alpha1_ETC2: + break; + default: + return t; + } + + QSize size = factory->m_textureData.size(); + if (size.width() < m_atlas_size_limit && size.height() < m_atlas_size_limit) { + QHash<unsigned int, QSGCompressedAtlasTexture::Atlas*>::iterator i = m_atlases.find(format); + if (i == m_atlases.end()) + i = m_atlases.insert(format, new QSGCompressedAtlasTexture::Atlas(m_atlas_size, format)); + // must be multiple of 4 + QSize paddedSize(((size.width() + 3) / 4) * 4, ((size.height() + 3) / 4) * 4); + QByteArray data = factory->m_textureData.data(); + t = i.value()->create(data, factory->m_textureData.dataLength(), factory->m_textureData.dataOffset(), size, paddedSize); + } +#endif +} + +AtlasBase::AtlasBase(QSGDefaultRenderContext *rc, const QSize &size) + : m_rc(rc) + , m_rhi(rc->rhi()) + , m_allocator(size) + , m_size(size) +{ +} + +AtlasBase::~AtlasBase() +{ + Q_ASSERT(!m_texture); +} + +void AtlasBase::invalidate() +{ + delete m_texture; + m_texture = nullptr; +} + +void AtlasBase::updateRhiTexture(QRhiResourceUpdateBatch *resourceUpdates) +{ + if (!m_allocated) { + m_allocated = true; + if (!generateTexture()) { + qWarning("QSGTextureAtlas: Failed to create texture"); + return; + } + } + + for (TextureBase *t : m_pending_uploads) { + // ### this profiling is all wrong, the real work is done elsewhere + bool profileFrames = QSG_LOG_TIME_TEXTURE().isDebugEnabled(); + if (profileFrames) + qsg_renderer_timer.start(); + + Q_QUICK_SG_PROFILE_START(QQuickProfiler::SceneGraphTexturePrepare); + + // Skip bind, convert, swizzle; they're irrelevant + Q_QUICK_SG_PROFILE_SKIP(QQuickProfiler::SceneGraphTexturePrepare, + QQuickProfiler::SceneGraphTexturePrepareStart, 3); + + enqueueTextureUpload(t, resourceUpdates); + + Q_QUICK_SG_PROFILE_RECORD(QQuickProfiler::SceneGraphTexturePrepare, + QQuickProfiler::SceneGraphTexturePrepareUpload); + + // Skip mipmap; unused + Q_QUICK_SG_PROFILE_SKIP(QQuickProfiler::SceneGraphTexturePrepare, + QQuickProfiler::SceneGraphTexturePrepareUpload, 1); + Q_QUICK_SG_PROFILE_REPORT(QQuickProfiler::SceneGraphTexturePrepare, + QQuickProfiler::SceneGraphTexturePrepareMipmap); + } + + m_pending_uploads.clear(); +} + +void AtlasBase::remove(TextureBase *t) +{ + QRect atlasRect = t->atlasSubRect(); + m_allocator.deallocate(atlasRect); + m_pending_uploads.removeOne(t); +} + +Atlas::Atlas(QSGDefaultRenderContext *rc, const QSize &size) + : AtlasBase(rc, size) +{ + // use RGBA texture internally as that is the only one guaranteed to be always supported + m_format = QRhiTexture::RGBA8; + + m_debug_overlay = qt_sg_envInt("QSG_ATLAS_OVERLAY", 0); + + // images smaller than this will retain their QImage. + // by default no images are retained (favoring memory) + // set to a very large value to retain all images (allowing quick removal from the atlas) + m_atlas_transient_image_threshold = qt_sg_envInt("QSG_ATLAS_TRANSIENT_IMAGE_THRESHOLD", 0); +} + +Atlas::~Atlas() +{ +} + +Texture *Atlas::create(const QImage &image) +{ + // No need to lock, as manager already locked it. + QRect rect = m_allocator.allocate(QSize(image.width() + 2, image.height() + 2)); + if (rect.width() > 0 && rect.height() > 0) { + Texture *t = new Texture(this, rect, image); + m_pending_uploads << t; + return t; + } + return nullptr; +} + +bool Atlas::generateTexture() +{ + m_texture = m_rhi->newTexture(m_format, m_size, 1, QRhiTexture::UsedAsTransferSource); + if (!m_texture) + return false; + + if (!m_texture->build()) { + delete m_texture; + m_texture = nullptr; + return false; + } + + return true; +} + +void Atlas::enqueueTextureUpload(TextureBase *t, QRhiResourceUpdateBatch *resourceUpdates) +{ + Texture *tex = static_cast<Texture *>(t); + const QRect &r = tex->atlasSubRect(); + QImage image = tex->image(); + + if (image.isNull()) + return; + + if (image.format() != QImage::Format_RGBA8888_Premultiplied) + image = std::move(image).convertToFormat(QImage::Format_RGBA8888_Premultiplied); + + if (m_debug_overlay) { + QPainter p(&image); + p.setCompositionMode(QPainter::CompositionMode_SourceAtop); + p.fillRect(0, 0, image.width(), image.height(), QBrush(QColor::fromRgbF(0, 1, 1, 0.5))); + } + + const int iw = image.width(); + const int ih = image.height(); + const int bpl = image.bytesPerLine() / 4; + QVarLengthArray<quint32, 1024> tmpBits(qMax(iw + 2, ih + 2)); + const int tmpBitsSize = tmpBits.size() * 4; + const quint32 *src = reinterpret_cast<const quint32 *>(image.constBits()); + quint32 *dst = tmpBits.data(); + QVector<QRhiTextureUploadEntry> entries; + entries.reserve(5); + + // top row, padding corners + dst[0] = src[0]; + memcpy(dst + 1, src, iw * sizeof(quint32)); + dst[1 + iw] = src[iw - 1]; + { + QRhiTextureSubresourceUploadDescription subresDesc(dst, tmpBitsSize); + subresDesc.setDestinationTopLeft(QPoint(r.x(), r.y())); + subresDesc.setSourceSize(QSize(iw + 2, 1)); + entries.append(QRhiTextureUploadEntry(0, 0, subresDesc)); + } + + // bottom row, padded corners + const quint32 *lastRow = src + bpl * (ih - 1); + dst[0] = lastRow[0]; + memcpy(dst + 1, lastRow, iw * sizeof(quint32)); + dst[1 + iw] = lastRow[iw - 1]; + { + QRhiTextureSubresourceUploadDescription subresDesc(dst, tmpBitsSize); + subresDesc.setDestinationTopLeft(QPoint(r.x(), r.y() + ih + 1)); + subresDesc.setSourceSize(QSize(iw + 2, 1)); + entries.append(QRhiTextureUploadEntry(0, 0, subresDesc)); + } + + // left column + for (int i = 0; i < ih; ++i) + dst[i] = src[i * bpl]; + { + QRhiTextureSubresourceUploadDescription subresDesc(dst, tmpBitsSize); + subresDesc.setDestinationTopLeft(QPoint(r.x(), r.y() + 1)); + subresDesc.setSourceSize(QSize(1, ih)); + entries.append(QRhiTextureUploadEntry(0, 0, subresDesc)); + } + + + // right column + for (int i = 0; i < ih; ++i) + dst[i] = src[i * bpl + iw - 1]; + { + QRhiTextureSubresourceUploadDescription subresDesc(dst, tmpBitsSize); + subresDesc.setDestinationTopLeft(QPoint(r.x() + iw + 1, r.y() + 1)); + subresDesc.setSourceSize(QSize(1, ih)); + entries.append(QRhiTextureUploadEntry(0, 0, subresDesc)); + } + + // Inner part of the image.... + if (bpl != iw) { + int sy = r.y() + 1; + int ey = sy + r.height() - 2; + entries.reserve(4 + (ey - sy)); + for (int y = sy; y < ey; ++y) { + QRhiTextureSubresourceUploadDescription subresDesc(src, image.bytesPerLine()); + subresDesc.setDestinationTopLeft(QPoint(r.x() + 1, y)); + subresDesc.setSourceSize(QSize(r.width() - 2, 1)); + entries.append(QRhiTextureUploadEntry(0, 0, subresDesc)); + src += bpl; + } + } else { + QRhiTextureSubresourceUploadDescription subresDesc(src, image.sizeInBytes()); + subresDesc.setDestinationTopLeft(QPoint(r.x() + 1, r.y() + 1)); + subresDesc.setSourceSize(QSize(r.width() - 2, r.height() - 2)); + entries.append(QRhiTextureUploadEntry(0, 0, subresDesc)); + } + + resourceUpdates->uploadTexture(m_texture, QRhiTextureUploadDescription(entries)); + + const QSize textureSize = t->textureSize(); + if (textureSize.width() > m_atlas_transient_image_threshold || textureSize.height() > m_atlas_transient_image_threshold) + tex->releaseImage(); + + qCDebug(QSG_LOG_TIME_TEXTURE, "atlastexture upload enqueued in: %lldms (%dx%d)", + qsg_renderer_timer.elapsed(), + t->textureSize().width(), + t->textureSize().height()); +} + +TextureBase::TextureBase(AtlasBase *atlas, const QRect &textureRect) + : QSGTexture(*(new TextureBasePrivate)) + , m_allocated_rect(textureRect) + , m_atlas(atlas) +{ +} + +TextureBase::~TextureBase() +{ + m_atlas->remove(this); +} + +QRhiResourceUpdateBatch *TextureBase::workResourceUpdateBatch() const +{ + Q_D(const TextureBase); + return d->workResourceUpdateBatch; +} + +int TextureBasePrivate::comparisonKey() const +{ + Q_Q(const TextureBase); + + // We need special care here: a typical comparisonKey() implementation + // returns a unique result when there is no underlying texture yet. This is + // not quite ideal for atlasing however since textures with the same atlas + // should be considered equal regardless of the state of the underlying + // graphics resources. + + // base the comparison on the atlas ptr; this way textures for the same + // atlas are considered equal + return int(qintptr(q->m_atlas)); +} + +QRhiTexture *TextureBasePrivate::rhiTexture() const +{ + Q_Q(const TextureBase); + return q->m_atlas->m_texture; +} + +void TextureBasePrivate::updateRhiTexture(QRhi *rhi, QRhiResourceUpdateBatch *resourceUpdates) +{ + Q_Q(TextureBase); +#ifdef QT_NO_DEBUG + Q_UNUSED(rhi); +#endif + Q_ASSERT(rhi == q->m_atlas->m_rhi); + q->m_atlas->updateRhiTexture(resourceUpdates); +} + +Texture::Texture(Atlas *atlas, const QRect &textureRect, const QImage &image) + : TextureBase(atlas, textureRect) + , m_image(image) + , m_has_alpha(image.hasAlphaChannel()) +{ + float w = atlas->size().width(); + float h = atlas->size().height(); + QRect nopad = atlasSubRectWithoutPadding(); + m_texture_coords_rect = QRectF(nopad.x() / w, + nopad.y() / h, + nopad.width() / w, + nopad.height() / h); +} + +Texture::~Texture() +{ + if (m_nonatlas_texture) + delete m_nonatlas_texture; +} + +QSGTexture *Texture::removedFromAtlas() const +{ + if (!m_nonatlas_texture) { + m_nonatlas_texture = new QSGPlainTexture; + if (!m_image.isNull()) { + m_nonatlas_texture->setImage(m_image); + m_nonatlas_texture->setFiltering(filtering()); + } else { + QSGDefaultRenderContext *rc = m_atlas->renderContext(); + QRhi *rhi = m_atlas->rhi(); + Q_ASSERT(rhi->isRecordingFrame()); + const QRect r = atlasSubRectWithoutPadding(); + + QRhiTexture *extractTex = rhi->newTexture(m_atlas->texture()->format(), r.size()); + if (extractTex->build()) { + bool ownResUpd = false; + QRhiResourceUpdateBatch *resUpd = workResourceUpdateBatch(); // ### Qt 6: should be an arg to this function + if (!resUpd) { + ownResUpd = true; + resUpd = rhi->nextResourceUpdateBatch(); + } + QRhiTextureCopyDescription desc; + desc.setSourceTopLeft(r.topLeft()); + desc.setPixelSize(r.size()); + resUpd->copyTexture(extractTex, m_atlas->texture(), desc); + if (ownResUpd) + rc->currentFrameCommandBuffer()->resourceUpdate(resUpd); + } + + m_nonatlas_texture->setTexture(extractTex); + m_nonatlas_texture->setOwnsTexture(true); + m_nonatlas_texture->setHasAlphaChannel(m_has_alpha); + m_nonatlas_texture->setTextureSize(r.size()); + } + } + + m_nonatlas_texture->setMipmapFiltering(mipmapFiltering()); + m_nonatlas_texture->setFiltering(filtering()); + return m_nonatlas_texture; +} + +} + +QT_END_NAMESPACE + +#include "moc_qsgrhiatlastexture_p.cpp" |