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Diffstat (limited to 'src/opengl/qgl_p.h')
| -rw-r--r-- | src/opengl/qgl_p.h | 556 |
1 files changed, 0 insertions, 556 deletions
diff --git a/src/opengl/qgl_p.h b/src/opengl/qgl_p.h deleted file mode 100644 index 4e52c0f5e9..0000000000 --- a/src/opengl/qgl_p.h +++ /dev/null @@ -1,556 +0,0 @@ -/**************************************************************************** -** -** 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. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#ifndef QGL_P_H -#define QGL_P_H - -// -// W A R N I N G -// ------------- -// -// This file is not part of the Qt API. It exists for the convenience -// of the QGLWidget class. This header file may change from -// version to version without notice, or even be removed. -// -// We mean it. -// - -#include "QtOpenGL/qgl.h" -#include "QtOpenGL/qglcolormap.h" -#include "QtCore/qmap.h" -#include "QtCore/qthread.h" -#include "QtCore/qthreadstorage.h" -#include "QtCore/qhashfunctions.h" -#include "QtCore/qatomic.h" -#include "QtWidgets/private/qwidget_p.h" -#include "QtGui/private/qopenglcontext_p.h" -#include "QtGui/private/qopenglextensions_p.h" -#include "qcache.h" -#include "qglpaintdevice_p.h" - -#include <QtGui/QOpenGLContext> - -QT_BEGIN_NAMESPACE - -class QGLContext; -class QGLOverlayWidget; -class QPixmap; -class QOpenGLExtensions; - -class QGLFormatPrivate -{ -public: - QGLFormatPrivate() - : ref(1) - { - opts = QGL::DoubleBuffer | QGL::DepthBuffer | QGL::Rgba | QGL::DirectRendering - | QGL::StencilBuffer | QGL::DeprecatedFunctions; - pln = 0; - depthSize = accumSize = stencilSize = redSize = greenSize = blueSize = alphaSize = -1; - numSamples = -1; - swapInterval = -1; - majorVersion = 2; - minorVersion = 0; - profile = QGLFormat::NoProfile; - } - QGLFormatPrivate(const QGLFormatPrivate *other) - : ref(1), - opts(other->opts), - pln(other->pln), - depthSize(other->depthSize), - accumSize(other->accumSize), - stencilSize(other->stencilSize), - redSize(other->redSize), - greenSize(other->greenSize), - blueSize(other->blueSize), - alphaSize(other->alphaSize), - numSamples(other->numSamples), - swapInterval(other->swapInterval), - majorVersion(other->majorVersion), - minorVersion(other->minorVersion), - profile(other->profile) - { - } - QAtomicInt ref; - QGL::FormatOptions opts; - int pln; - int depthSize; - int accumSize; - int stencilSize; - int redSize; - int greenSize; - int blueSize; - int alphaSize; - int numSamples; - int swapInterval; - int majorVersion; - int minorVersion; - QGLFormat::OpenGLContextProfile profile; -}; - -class Q_OPENGL_EXPORT QGLWidgetPrivate : public QWidgetPrivate -{ - Q_DECLARE_PUBLIC(QGLWidget) -public: - QGLWidgetPrivate() : QWidgetPrivate() - , disable_clear_on_painter_begin(false) - , parent_changing(false) - { - } - - ~QGLWidgetPrivate() {} - - void init(QGLContext *context, const QGLWidget* shareWidget); - void initContext(QGLContext *context, const QGLWidget* shareWidget); - bool renderCxPm(QPixmap *pixmap); - void cleanupColormaps(); - void aboutToDestroy() override { - if (glcx && !parent_changing) - glcx->reset(); - } - - bool makeCurrent(); - - QGLContext *glcx; - QGLWidgetGLPaintDevice glDevice; - bool autoSwap; - - QGLColormap cmap; - - bool disable_clear_on_painter_begin; - bool parent_changing; -}; - -// QGLContextPrivate has the responsibility of creating context groups. -// QGLContextPrivate maintains the reference counter and destroys -// context groups when needed. -class QGLContextGroup -{ -public: - ~QGLContextGroup(); - - const QGLContext *context() const {return m_context;} - bool isSharing() const { return m_shares.size() >= 2; } - QList<const QGLContext *> shares() const { return m_shares; } - - static void addShare(const QGLContext *context, const QGLContext *share); - static void removeShare(const QGLContext *context); - -private: - QGLContextGroup(const QGLContext *context); - - const QGLContext *m_context; // context group's representative - QList<const QGLContext *> m_shares; - QAtomicInt m_refs; - - friend class QGLContext; - friend class QGLContextPrivate; - friend class QGLContextGroupResourceBase; -}; - -// Get the context that resources for "ctx" will transfer to once -// "ctx" is destroyed. Returns null if nothing is sharing with ctx. -const QGLContext *qt_gl_transfer_context(const QGLContext *); - -/* - QGLTemporaryContext - the main objective of this class is to have a way of - creating a GL context and making it current, without going via QGLWidget - and friends. At certain points during GL initialization we need a current - context in order decide what GL features are available, and to resolve GL - extensions. Having a light-weight way of creating such a context saves - initial application startup time, and it doesn't wind up creating recursive - conflicts. - The class currently uses a private d pointer to hide the platform specific - types. This could possibly been done inline with #ifdef'ery, but it causes - major headaches on e.g. X11 due to namespace pollution. -*/ -class QGLTemporaryContextPrivate; -class QGLTemporaryContext { -public: - explicit QGLTemporaryContext(bool directRendering = true, QWidget *parent = nullptr); - ~QGLTemporaryContext(); - -private: - QScopedPointer<QGLTemporaryContextPrivate> d; -}; - -class QGLTexture; -class QGLTextureDestroyer; - -// This probably needs to grow to GL_MAX_VERTEX_ATTRIBS, but 3 is ok for now as that's -// all the GL2 engine uses: -#define QT_GL_VERTEX_ARRAY_TRACKED_COUNT 3 - -class QGLContextResourceBase; - -class QGLContextPrivate -{ - Q_DECLARE_PUBLIC(QGLContext) -public: - explicit QGLContextPrivate(QGLContext *context); - ~QGLContextPrivate(); - QGLTexture *bindTexture(const QImage &image, GLenum target, GLint format, - QGLContext::BindOptions options); - QGLTexture *bindTexture(const QImage &image, GLenum target, GLint format, const qint64 key, - QGLContext::BindOptions options); - QGLTexture *bindTexture(const QPixmap &pixmap, GLenum target, GLint format, - QGLContext::BindOptions options); - QGLTexture *textureCacheLookup(const qint64 key, GLenum target); - void init(QPaintDevice *dev, const QGLFormat &format); - int maxTextureSize(); - - void cleanup(); - - void setVertexAttribArrayEnabled(int arrayIndex, bool enabled = true); - void syncGlState(); // Makes sure the GL context's state is what we think it is - void swapRegion(const QRegion ®ion); - - QOpenGLContext *guiGlContext; - // true if QGLContext owns the QOpenGLContext (for who deletes who) - bool ownContext; - - void setupSharing(); - void refreshCurrentFbo(); - void setCurrentFbo(GLuint fbo); - - QGLFormat glFormat; - QGLFormat reqFormat; - GLuint fbo; - - uint valid : 1; - uint sharing : 1; - uint initDone : 1; - uint crWin : 1; - uint internal_context : 1; - uint version_flags_cached : 1; - - // workarounds for driver/hw bugs on different platforms - uint workaround_needsFullClearOnEveryFrame : 1; - uint workaround_brokenFBOReadBack : 1; - uint workaround_brokenTexSubImage : 1; - uint workaroundsCached : 1; - - uint workaround_brokenTextureFromPixmap : 1; - uint workaround_brokenTextureFromPixmap_init : 1; - - uint workaround_brokenAlphaTexSubImage : 1; - uint workaround_brokenAlphaTexSubImage_init : 1; - - QPaintDevice *paintDevice; - QSize readback_target_size; - QColor transpColor; - QGLContext *q_ptr; - QGLFormat::OpenGLVersionFlags version_flags; - - QGLContextGroup *group; - GLint max_texture_size; - - GLuint current_fbo; - GLuint default_fbo; - QPaintEngine *active_engine; - QGLTextureDestroyer *texture_destroyer; - - QGLFunctions *functions; - - bool vertexAttributeArraysEnabledState[QT_GL_VERTEX_ARRAY_TRACKED_COUNT]; - - static inline QGLContextGroup *contextGroup(const QGLContext *ctx) { return ctx->d_ptr->group; } - - static void setCurrentContext(QGLContext *context); -}; - -// Temporarily make a context current if not already current or -// shared with the current contex. The previous context is made -// current when the object goes out of scope. -class Q_OPENGL_EXPORT QGLShareContextScope -{ -public: - QGLShareContextScope(const QGLContext *ctx) - : m_oldContext(nullptr) - { - QGLContext *currentContext = const_cast<QGLContext *>(QGLContext::currentContext()); - if (currentContext != ctx && !QGLContext::areSharing(ctx, currentContext)) { - m_oldContext = currentContext; - m_ctx = const_cast<QGLContext *>(ctx); - m_ctx->makeCurrent(); - } else { - m_ctx = currentContext; - } - } - - operator QGLContext *() - { - return m_ctx; - } - - QGLContext *operator->() - { - return m_ctx; - } - - ~QGLShareContextScope() - { - if (m_oldContext) - m_oldContext->makeCurrent(); - } - -private: - QGLContext *m_oldContext; - QGLContext *m_ctx; -}; - -QT_END_NAMESPACE -Q_DECLARE_METATYPE(GLuint) -QT_BEGIN_NAMESPACE - -class Q_OPENGL_EXPORT QGLTextureDestroyer -{ -public: - void emitFreeTexture(QGLContext *context, QPlatformPixmap *, GLuint id) { - if (context->contextHandle()) - (new QOpenGLSharedResourceGuard(context->contextHandle(), id, freeTextureFunc))->free(); - } - -private: - static void freeTextureFunc(QOpenGLFunctions *, GLuint id) { - QOpenGLContext::currentContext()->functions()->glDeleteTextures(1, &id); - } -}; - -class Q_OPENGL_EXPORT QGLSignalProxy : public QObject -{ - Q_OBJECT -public: - void emitAboutToDestroyContext(const QGLContext *context) { - emit aboutToDestroyContext(context); - } - static QGLSignalProxy *instance(); -Q_SIGNALS: - void aboutToDestroyContext(const QGLContext *context); -}; - -class QGLTexture { -public: - explicit QGLTexture(QGLContext *ctx = nullptr, GLuint tx_id = 0, GLenum tx_target = GL_TEXTURE_2D, - QGLContext::BindOptions opt = QGLContext::DefaultBindOption) - : context(ctx), - id(tx_id), - target(tx_target), - options(opt) - {} - - ~QGLTexture() { - if (options & QGLContext::MemoryManagedBindOption) { - Q_ASSERT(context); - QPlatformPixmap *boundPixmap = nullptr; - context->d_ptr->texture_destroyer->emitFreeTexture(context, boundPixmap, id); - } - } - - QGLContext *context; - GLuint id; - GLenum target; - - QGLContext::BindOptions options; - - bool canBindCompressedTexture - (const char *buf, int len, const char *format, bool *hasAlpha); - QSize bindCompressedTexture - (const QString& fileName, const char *format = nullptr); - QSize bindCompressedTexture - (const char *buf, int len, const char *format = nullptr); - QSize bindCompressedTextureDDS(const char *buf, int len); - QSize bindCompressedTexturePVR(const char *buf, int len); -}; - -struct QGLTextureCacheKey { - qint64 key; - QGLContextGroup *group; -}; - -inline bool operator==(const QGLTextureCacheKey &a, const QGLTextureCacheKey &b) -{ - return a.key == b.key && a.group == b.group; -} - -inline uint qHash(const QGLTextureCacheKey &key) -{ - return qHash(key.key) ^ qHash(key.group); -} - - -class Q_AUTOTEST_EXPORT QGLTextureCache { -public: - QGLTextureCache(); - ~QGLTextureCache(); - - void insert(QGLContext *ctx, qint64 key, QGLTexture *texture, int cost); - void remove(qint64 key); - inline int size(); - inline void setMaxCost(int newMax); - inline int maxCost(); - inline QGLTexture* getTexture(QGLContext *ctx, qint64 key); - - bool remove(QGLContext *ctx, GLuint textureId); - void removeContextTextures(QGLContext *ctx); - static QGLTextureCache *instance(); - static void cleanupTexturesForCacheKey(qint64 cacheKey); - static void cleanupTexturesForPixampData(QPlatformPixmap* pixmap); - static void cleanupBeforePixmapDestruction(QPlatformPixmap* pixmap); - -private: - QCache<QGLTextureCacheKey, QGLTexture> m_cache; - QReadWriteLock m_lock; -}; - -int QGLTextureCache::size() { - QReadLocker locker(&m_lock); - return m_cache.size(); -} - -void QGLTextureCache::setMaxCost(int newMax) -{ - QWriteLocker locker(&m_lock); - m_cache.setMaxCost(newMax); -} - -int QGLTextureCache::maxCost() -{ - QReadLocker locker(&m_lock); - return m_cache.maxCost(); -} - -QGLTexture* QGLTextureCache::getTexture(QGLContext *ctx, qint64 key) -{ - // Can't be a QReadLocker since QCache::object() modifies the cache (reprioritizes the object) - QWriteLocker locker(&m_lock); - const QGLTextureCacheKey cacheKey = {key, QGLContextPrivate::contextGroup(ctx)}; - return m_cache.object(cacheKey); -} - -Q_OPENGL_EXPORT extern QPaintEngine* qt_qgl_paint_engine(); - -QOpenGLExtensions* qgl_extensions(); -bool qgl_hasFeature(QOpenGLFunctions::OpenGLFeature feature); -bool qgl_hasExtension(QOpenGLExtensions::OpenGLExtension extension); - -// Put a guard around a GL object identifier and its context. -// When the context goes away, a shared context will be used -// in its place. If there are no more shared contexts, then -// the identifier is returned as zero - it is assumed that the -// context destruction cleaned up the identifier in this case. -class QGLSharedResourceGuardBase : public QOpenGLSharedResource -{ -public: - QGLSharedResourceGuardBase(QGLContext *context, GLuint id) - : QOpenGLSharedResource(context->contextHandle()->shareGroup()) - , m_id(id) - { - } - - GLuint id() const - { - return m_id; - } - -protected: - void invalidateResource() override - { - m_id = 0; - } - - void freeResource(QOpenGLContext *context) override - { - if (m_id) { - freeResource(QGLContext::fromOpenGLContext(context), m_id); - } - } - - virtual void freeResource(QGLContext *ctx, GLuint id) = 0; - -private: - GLuint m_id; -}; - -template <typename Func> -class QGLSharedResourceGuard : public QGLSharedResourceGuardBase -{ -public: - QGLSharedResourceGuard(QGLContext *context, GLuint id, Func func) - : QGLSharedResourceGuardBase(context, id) - , m_func(func) - { - } - -protected: - void freeResource(QGLContext *ctx, GLuint id) override - { - m_func(ctx, id); - } - -private: - Func m_func; -}; - -template <typename Func> -QGLSharedResourceGuardBase *createSharedResourceGuard(QGLContext *context, GLuint id, Func cleanupFunc) -{ - return new QGLSharedResourceGuard<Func>(context, id, cleanupFunc); -} - -// this is a class that wraps a QThreadStorage object for storing -// thread local instances of the GL 1 and GL 2 paint engines - -template <class T> -class QGLEngineThreadStorage -{ -public: - QPaintEngine *engine() { - QPaintEngine *&localEngine = storage.localData(); - if (!localEngine) - localEngine = new T; - return localEngine; - } - -private: - QThreadStorage<QPaintEngine *> storage; -}; -QT_END_NAMESPACE - -#endif // QGL_P_H |