1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2016 The Qt Company Ltd. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the QtOpenGL module of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://www.qt.io/contact-us. 16 ** 17 ** GNU Lesser General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU Lesser 19 ** General Public License version 3 as published by the Free Software 20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the 21 ** packaging of this file. Please review the following information to 22 ** ensure the GNU Lesser General Public License version 3 requirements 23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. 24 ** 25 ** GNU General Public License Usage 26 ** Alternatively, this file may be used under the terms of the GNU 27 ** General Public License version 2.0 or (at your option) the GNU General 28 ** Public license version 3 or any later version approved by the KDE Free 29 ** Qt Foundation. The licenses are as published by the Free Software 30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 31 ** included in the packaging of this file. Please review the following 32 ** information to ensure the GNU General Public License requirements will 33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and 34 ** https://www.gnu.org/licenses/gpl-3.0.html. 35 ** 36 ** $QT_END_LICENSE$ 37 ** 38 ****************************************************************************/ 39 40 #ifndef QGLPIXELBUFFER_H 41 #define QGLPIXELBUFFER_H 42 43 #include <QtOpenGL/qgl.h> 44 #include <QtGui/qpaintdevice.h> 45 46 QT_BEGIN_NAMESPACE 47 48 49 class QGLPixelBufferPrivate; 50 51 class Q_OPENGL_EXPORT QGLPixelBuffer : public QPaintDevice 52 { 53 Q_DECLARE_PRIVATE(QGLPixelBuffer) 54 public: 55 QGLPixelBuffer(const QSize &size, const QGLFormat &format = QGLFormat::defaultFormat(), 56 QGLWidget *shareWidget = nullptr); 57 QGLPixelBuffer(int width, int height, const QGLFormat &format = QGLFormat::defaultFormat(), 58 QGLWidget *shareWidget = nullptr); 59 virtual ~QGLPixelBuffer(); 60 61 bool isValid() const; 62 bool makeCurrent(); 63 bool doneCurrent(); 64 65 QGLContext *context() const; 66 67 GLuint generateDynamicTexture() const; 68 bool bindToDynamicTexture(GLuint texture); 69 void releaseFromDynamicTexture(); 70 void updateDynamicTexture(GLuint texture_id) const; 71 72 GLuint bindTexture(const QImage &image, GLenum target = GL_TEXTURE_2D); 73 GLuint bindTexture(const QPixmap &pixmap, GLenum target = GL_TEXTURE_2D); 74 GLuint bindTexture(const QString &fileName); 75 void deleteTexture(GLuint texture_id); 76 77 void drawTexture(const QRectF &target, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D); 78 void drawTexture(const QPointF &point, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D); 79 80 QSize size() const; 81 Qt::HANDLE handle() const; 82 QImage toImage() const; 83 84 QPaintEngine *paintEngine() const override; 85 QGLFormat format() const; 86 87 static bool hasOpenGLPbuffers(); 88 89 protected: 90 int metric(PaintDeviceMetric metric) const override; devType()91 int devType() const override { return QInternal::Pbuffer; } 92 93 private: 94 Q_DISABLE_COPY(QGLPixelBuffer) 95 QScopedPointer<QGLPixelBufferPrivate> d_ptr; 96 friend class QGLDrawable; 97 friend class QGLPaintDevice; 98 friend class QGLPBufferGLPaintDevice; 99 friend class QGLContextPrivate; 100 }; 101 102 QT_END_NAMESPACE 103 104 #endif // QGLPIXELBUFFER_H 105