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-rw-r--r--src/opengl/qgl_p.h163
1 files changed, 95 insertions, 68 deletions
diff --git a/src/opengl/qgl_p.h b/src/opengl/qgl_p.h
index 2eb4aa5..fdd28a4 100644
--- a/src/opengl/qgl_p.h
+++ b/src/opengl/qgl_p.h
@@ -1,6 +1,7 @@
/****************************************************************************
**
** Copyright (C) 2009 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.
@@ -20,10 +21,9 @@
** 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.
+** 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.
@@ -62,6 +62,7 @@
#include "QtCore/qatomic.h"
#include "private/qwidget_p.h"
#include "qcache.h"
+#include "qglpaintdevice_p.h"
#ifndef QT_OPENGL_ES_1_CL
#define q_vertexType float
@@ -174,6 +175,7 @@ class QGLWidgetPrivate : public QWidgetPrivate
Q_DECLARE_PUBLIC(QGLWidget)
public:
QGLWidgetPrivate() : QWidgetPrivate()
+ , disable_clear_on_painter_begin(false)
#ifdef Q_WS_QWS
, wsurf(0)
#endif
@@ -190,11 +192,14 @@ public:
void cleanupColormaps();
QGLContext *glcx;
+ QGLWidgetGLPaintDevice glDevice;
bool autoSwap;
QGLColormap cmap;
QMap<QString, int> displayListCache;
+ bool disable_clear_on_painter_begin;
+
#if defined(Q_WS_WIN)
void updateColormap();
QGLContext *olcx;
@@ -232,13 +237,37 @@ private:
friend class QGLContextPrivate;
};
+// Reference to a QGLContext which automatically switches to another
+// shared context when the main one is destroyed. If there is no
+// shared context to switch to, the context pointer is set to null.
+// Note: should be merged into QGLContextGroup at some point.
+class QGLContextReference : public QObject
+{
+ Q_OBJECT
+public:
+ QGLContextReference(const QGLContext *ctx);
+ ~QGLContextReference() {}
+
+ const QGLContext *context() const { return m_ctx; }
+
+ void ref() { m_ref.ref(); }
+ bool deref() { return m_ref.deref(); }
+
+private slots:
+ void aboutToDestroyContext(const QGLContext *ctx);
+
+private:
+ QAtomicInt m_ref;
+ const QGLContext *m_ctx;
+};
+
class QGLTexture;
class QGLContextPrivate
{
Q_DECLARE_PUBLIC(QGLContext)
public:
- explicit QGLContextPrivate(QGLContext *context) : internal_context(false), q_ptr(context) {group = new QGLContextGroup(context);}
+ explicit QGLContextPrivate(QGLContext *context) : internal_context(false), q_ptr(context) {reference = new QGLContextReference(context); group = new QGLContextGroup(context);}
~QGLContextPrivate();
QGLTexture *bindTexture(const QImage &image, GLenum target, GLint format,
QGLContext::BindOptions options);
@@ -293,7 +322,6 @@ public:
uint sharing : 1;
uint initDone : 1;
uint crWin : 1;
- uint clear_on_painter_begin : 1;
uint internal_context : 1;
uint version_flags_cached : 1;
QPaintDevice *paintDevice;
@@ -301,6 +329,7 @@ public:
QGLContext *q_ptr;
QGLFormat::OpenGLVersionFlags version_flags;
+ QGLContextReference *reference;
QGLContextGroup *group;
GLint max_texture_size;
@@ -337,59 +366,6 @@ Q_SIGNALS:
void aboutToDestroyContext(const QGLContext *context);
};
-class QGLPixelBuffer;
-class QGLFramebufferObject;
-class QWSGLWindowSurface;
-class QGLWindowSurface;
-class QGLPixmapData;
-class QGLDrawable {
-public:
- QGLDrawable() : widget(0), buffer(0), fbo(0)
-#if defined(Q_WS_QWS) || (!defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL))
- , wsurf(0)
-#endif
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
- , pixmapData(0)
-#endif
- {}
- void setDevice(QPaintDevice *pdev);
- void swapBuffers();
- void makeCurrent();
- void doneCurrent();
- QSize size() const;
- QGLFormat format() const;
- QGLTexture *bindTexture(const QImage &image, GLenum target = GL_TEXTURE_2D,
- GLint format = GL_RGBA,
- QGLContext::BindOptions = QGLContext::InternalBindOption);
- QGLTexture *bindTexture(const QPixmap &pixmap, GLenum target = GL_TEXTURE_2D,
- GLint format = GL_RGBA,
- QGLContext::BindOptions = QGLContext::InternalBindOption);
- QColor backgroundColor() const;
- QGLContext *context() const;
- bool autoFillBackground() const;
- bool hasTransparentBackground() const;
-
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
- QGLPixmapData *copyOnBegin() const;
-#endif
-
-private:
- bool wasBound;
- QGLWidget *widget;
- QGLPixelBuffer *buffer;
- QGLFramebufferObject *fbo;
-#ifdef Q_WS_QWS
- QWSGLWindowSurface *wsurf;
-#elif !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
- QGLWindowSurface *wsurf;
-#endif
-
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
- QGLPixmapData *pixmapData;
-#endif
- int previous_fbo;
-};
-
// GL extension definitions
class QGLExtensions {
public:
@@ -521,15 +497,7 @@ extern QPaintEngine* qt_qgl_paint_engine();
extern EGLDisplay qt_qgl_egl_display();
#endif
-inline bool qt_gl_preferGL2Engine()
-{
-#if defined(QT_OPENGL_ES_2)
- return true;
-#else
- return (QGLFormat::openGLVersionFlags() & QGLFormat::OpenGL_Version_2_0)
- && qgetenv("QT_GL_USE_OPENGL1ENGINE").isEmpty();
-#endif
-}
+bool qt_gl_preferGL2Engine();
inline GLenum qt_gl_preferredTextureFormat()
{
@@ -611,6 +579,65 @@ private:
QGLContext *m_ctx;
};
+// 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 Q_OPENGL_EXPORT QGLSharedResourceGuard
+{
+public:
+ QGLSharedResourceGuard(const QGLContext *context)
+ : m_ctxref(0), m_id(0)
+ {
+ setContext(context);
+ }
+ QGLSharedResourceGuard(const QGLContext *context, GLuint id)
+ : m_ctxref(0), m_id(id)
+ {
+ setContext(context);
+ }
+ ~QGLSharedResourceGuard()
+ {
+ if (m_ctxref && !m_ctxref->deref())
+ delete m_ctxref;
+ }
+
+ const QGLContext *context() const
+ {
+ return m_ctxref ? m_ctxref->context() : 0;
+ }
+
+ void setContext(const QGLContext *context)
+ {
+ if (m_ctxref && !m_ctxref->deref())
+ delete m_ctxref;
+ if (context) {
+ m_ctxref = context->d_ptr->reference;
+ m_ctxref->ref();
+ } else {
+ m_ctxref = 0;
+ }
+ }
+
+ GLuint id() const
+ {
+ if (m_ctxref && m_ctxref->context())
+ return m_id;
+ else
+ return 0;
+ }
+
+ void setId(GLuint id)
+ {
+ m_id = id;
+ }
+
+private:
+ QGLContextReference *m_ctxref;
+ GLuint m_id;
+};
+
QT_END_NAMESPACE
#endif // QGL_P_H
generated by cgit v0.12 at 2024-12-04 07:46:22 (GMT)