Qt 4.8
qglpixelbuffer.h
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41 
42 #ifndef QGLPIXELBUFFER_H
43 #define QGLPIXELBUFFER_H
44 
45 #include <QtOpenGL/qgl.h>
46 #include <QtGui/qpaintdevice.h>
47 
49 
51 
53 
55 
57 {
59 public:
61  QGLWidget *shareWidget = 0);
62  QGLPixelBuffer(int width, int height, const QGLFormat &format = QGLFormat::defaultFormat(),
63  QGLWidget *shareWidget = 0);
64  virtual ~QGLPixelBuffer();
65 
66  bool isValid() const;
67  bool makeCurrent();
68  bool doneCurrent();
69 
70  GLuint generateDynamicTexture() const;
71  bool bindToDynamicTexture(GLuint texture);
72  void releaseFromDynamicTexture();
73  void updateDynamicTexture(GLuint texture_id) const;
74 
75  GLuint bindTexture(const QImage &image, GLenum target = GL_TEXTURE_2D);
76  GLuint bindTexture(const QPixmap &pixmap, GLenum target = GL_TEXTURE_2D);
77  GLuint bindTexture(const QString &fileName);
78  void deleteTexture(GLuint texture_id);
79 
80  void drawTexture(const QRectF &target, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D);
81  void drawTexture(const QPointF &point, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D);
82 
83 #ifdef Q_MAC_COMPAT_GL_FUNCTIONS
84  bool bindToDynamicTexture(QMacCompatGLuint texture);
85  void updateDynamicTexture(QMacCompatGLuint texture_id) const;
86  GLuint bindTexture(const QImage &image, QMacCompatGLenum target = GL_TEXTURE_2D);
87  GLuint bindTexture(const QPixmap &pixmap, QMacCompatGLenum target = GL_TEXTURE_2D);
88 
89  void drawTexture(const QRectF &target, QMacCompatGLuint textureId, QMacCompatGLenum textureTarget = GL_TEXTURE_2D);
90  void drawTexture(const QPointF &point, QMacCompatGLuint textureId, QMacCompatGLenum textureTarget = GL_TEXTURE_2D);
91 
92  void deleteTexture(QMacCompatGLuint texture_id);
93 #endif
94 
95  QSize size() const;
96  Qt::HANDLE handle() const;
97  QImage toImage() const;
98 
99  QPaintEngine *paintEngine() const;
100  QGLFormat format() const;
101 
102  static bool hasOpenGLPbuffers();
103 
104 protected:
105  int metric(PaintDeviceMetric metric) const;
106  int devType() const { return QInternal::Pbuffer; }
107 
108 private:
111  friend class QGLDrawable;
116 };
117 
119 
121 
122 #endif // QGLPIXELBUFFER_H
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
#define QT_MODULE(x)
Definition: qglobal.h:2783
#define QT_BEGIN_HEADER
Definition: qglobal.h:136
int devType() const
#define Q_OPENGL_EXPORT
Definition: qglobal.h:1455
The QPointF class defines a point in the plane using floating point precision.
Definition: qpoint.h:214
#define Q_DISABLE_COPY(Class)
Disables the use of copy constructors and assignment operators for the given Class.
Definition: qglobal.h:2523
The QString class provides a Unicode character string.
Definition: qstring.h:83
#define GL_TEXTURE_2D
The QScopedPointer class stores a pointer to a dynamically allocated object, and deletes it upon dest...
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
The QRectF class defines a rectangle in the plane using floating point precision. ...
Definition: qrect.h:511
The QGLFormat class specifies the display format of an OpenGL rendering context.
Definition: qgl.h:175
The QImage class provides a hardware-independent image representation that allows direct access to th...
Definition: qimage.h:87
The QGLPixelBuffer class encapsulates an OpenGL pbuffer.
void * HANDLE
Definition: qnamespace.h:1671
The QPaintEngine class provides an abstract definition of how QPainter draws to a given device on a g...
Definition: qpaintengine.h:90
static void drawTexture(const QRectF &rect, GLuint tex_id, const QSize &texSize, const QRectF &src=QRectF())
virtual QPaintEngine * paintEngine() const =0
The QGLWidget class is a widget for rendering OpenGL graphics.
Definition: qgl.h:474
unsigned int GLenum
Definition: main.cpp:50
static QGLFormat defaultFormat()
Definition: qgl.cpp:1518
virtual int metric(PaintDeviceMetric metric) const
The QPixmap class is an off-screen image representation that can be used as a paint device...
Definition: qpixmap.h:71
The QSize class defines the size of a two-dimensional object using integer point precision.
Definition: qsize.h:53
#define Q_DECLARE_PRIVATE(Class)
Definition: qglobal.h:2467
#define class
#define QT_END_HEADER
Definition: qglobal.h:137
static QString fileName(const QString &fileUrl)