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Diffstat (limited to 'src/quick/scenegraph/util/qsgrhiatlastexture_p.h')
| -rw-r--r-- | src/quick/scenegraph/util/qsgrhiatlastexture_p.h | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/src/quick/scenegraph/util/qsgrhiatlastexture_p.h b/src/quick/scenegraph/util/qsgrhiatlastexture_p.h new file mode 100644 index 0000000000..50d7b2a53f --- /dev/null +++ b/src/quick/scenegraph/util/qsgrhiatlastexture_p.h @@ -0,0 +1,217 @@ +/**************************************************************************** +** +** 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. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QSGRHIATLASTEXTURE_P_H +#define QSGRHIATLASTEXTURE_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include <QtCore/QSize> +#include <QtQuick/private/qsgplaintexture_p.h> +#include <QtQuick/private/qsgareaallocator_p.h> +#include <QtGui/QSurface> +#include <QtGui/private/qrhi_p.h> + +QT_BEGIN_NAMESPACE + +class QSGDefaultRenderContext; + +namespace QSGCompressedAtlasTexture { + class Atlas; +} +class QSGCompressedTextureFactory; + +namespace QSGRhiAtlasTexture +{ + +class Texture; +class TextureBase; +class TextureBasePrivate; +class Atlas; + +class Manager : public QObject +{ + Q_OBJECT + +public: + Manager(QSGDefaultRenderContext *rc, const QSize &surfacePixelSize, QSurface *maybeSurface); + ~Manager(); + + QSGTexture *create(const QImage &image, bool hasAlphaChannel); + QSGTexture *create(const QSGCompressedTextureFactory *factory); + void invalidate(); + +private: + QSGDefaultRenderContext *m_rc; + QRhi *m_rhi; + Atlas *m_atlas = nullptr; + // set of atlases for different compressed formats + QHash<unsigned int, QSGCompressedAtlasTexture::Atlas*> m_atlases; + + QSize m_atlas_size; + int m_atlas_size_limit; +}; + +class AtlasBase : public QObject +{ + Q_OBJECT +public: + AtlasBase(QSGDefaultRenderContext *rc, const QSize &size); + ~AtlasBase(); + + void invalidate(); + void updateRhiTexture(QRhiResourceUpdateBatch *resourceUpdates); + void remove(TextureBase *t); + + QSGDefaultRenderContext *renderContext() const { return m_rc; } + QRhi *rhi() const { return m_rhi; } + QRhiTexture *texture() const { return m_texture; } + QSize size() const { return m_size; } + +protected: + virtual bool generateTexture() = 0; + virtual void enqueueTextureUpload(TextureBase *t, QRhiResourceUpdateBatch *resourceUpdates) = 0; + +protected: + QSGDefaultRenderContext *m_rc; + QRhi *m_rhi; + QSGAreaAllocator m_allocator; + QRhiTexture *m_texture = nullptr; + QSize m_size; + QVector<TextureBase *> m_pending_uploads; + friend class TextureBase; + friend class TextureBasePrivate; + +private: + bool m_allocated = false; +}; + +class Atlas : public AtlasBase +{ +public: + Atlas(QSGDefaultRenderContext *rc, const QSize &size); + ~Atlas(); + + bool generateTexture() override; + void enqueueTextureUpload(TextureBase *t, QRhiResourceUpdateBatch *resourceUpdates) override; + + Texture *create(const QImage &image); + + QRhiTexture::Format format() const { return m_format; } + +private: + QRhiTexture::Format m_format; + int m_atlas_transient_image_threshold = 0; + + uint m_debug_overlay : 1; +}; + +class TextureBase : public QSGTexture +{ + Q_DECLARE_PRIVATE(TextureBase) + Q_OBJECT +public: + TextureBase(AtlasBase *atlas, const QRect &textureRect); + ~TextureBase(); + + int textureId() const override { return 0; } // not used + void bind() override { } // not used + + bool isAtlasTexture() const override { return true; } + QRect atlasSubRect() const { return m_allocated_rect; } + + QRhiResourceUpdateBatch *workResourceUpdateBatch() const; + +protected: + QRect m_allocated_rect; + AtlasBase *m_atlas; +}; + +class TextureBasePrivate : public QSGTexturePrivate +{ + Q_DECLARE_PUBLIC(TextureBase) +public: + int comparisonKey() const override; + QRhiTexture *rhiTexture() const override; + void updateRhiTexture(QRhi *rhi, QRhiResourceUpdateBatch *resourceUpdates) override; +}; + +class Texture : public TextureBase +{ + Q_OBJECT +public: + Texture(Atlas *atlas, const QRect &textureRect, const QImage &image); + ~Texture(); + + QSize textureSize() const override { return atlasSubRectWithoutPadding().size(); } + void setHasAlphaChannel(bool alpha) { m_has_alpha = alpha; } + bool hasAlphaChannel() const override { return m_has_alpha; } + bool hasMipmaps() const override { return false; } + + QRectF normalizedTextureSubRect() const override { return m_texture_coords_rect; } + + QRect atlasSubRect() const { return m_allocated_rect; } + QRect atlasSubRectWithoutPadding() const { return m_allocated_rect.adjusted(1, 1, -1, -1); } + + QSGTexture *removedFromAtlas() const override; + + void releaseImage() { m_image = QImage(); } + const QImage &image() const { return m_image; } + +private: + QRectF m_texture_coords_rect; + QImage m_image; + mutable QSGPlainTexture *m_nonatlas_texture = nullptr; + bool m_has_alpha; +}; + +} + +QT_END_NAMESPACE + +#endif |