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Diffstat (limited to 'examples/qws/ahigl/qwindowsurface_ahigl.cpp')
| -rw-r--r-- | examples/qws/ahigl/qwindowsurface_ahigl.cpp | 349 |
1 files changed, 0 insertions, 349 deletions
diff --git a/examples/qws/ahigl/qwindowsurface_ahigl.cpp b/examples/qws/ahigl/qwindowsurface_ahigl.cpp deleted file mode 100644 index 3466a27..0000000 --- a/examples/qws/ahigl/qwindowsurface_ahigl.cpp +++ /dev/null @@ -1,349 +0,0 @@ -/**************************************************************************** -** -** 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 examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** No Commercial Usage -** This file contains pre-release code and may not be distributed. -** You may use this file in accordance with the terms and conditions -** contained in the Technology Preview License Agreement accompanying -** this package. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL included in the -** packaging of this file. Please review the following information to -** 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. -** -** If you have questions regarding the use of this file, please contact -** Nokia at qt-info@nokia.com. -** -** -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qwindowsurface_ahigl_p.h" -#include "qscreenahigl_qws.h" - -#include <qwsdisplay_qws.h> -#include <QtGui/QPaintDevice> -#include <QtGui/QWidget> -#include <QtOpenGL/private/qglpaintdevice_qws_p.h> -#include <QtOpenGL/private/qgl_p.h> -#include <GLES/gl.h> - -/*! - \class QAhiGLWindowSurfacePrivate - \internal - - \brief The QAhiGLWindowSurfacePrivate class is the private implementation - class for class QAhiGLWindowSurface. - - This class contains only state variables. - */ -//! [0] -class QAhiGLWindowSurfacePrivate -{ -public: - QAhiGLWindowSurfacePrivate(EGLDisplay eglDisplay, - EGLSurface eglSurface, - EGLContext eglContext); - - QPaintDevice *device; - - int textureWidth; - int textureHeight; - - GLuint texture; - GLuint frameBufferObject; - GLuint depthbuf; - - EGLDisplay display; - EGLSurface surface; - EGLContext context; -}; -//! [0] - -/*! - The construct just sets statwe variables using the ones - provided. - */ -QAhiGLWindowSurfacePrivate::QAhiGLWindowSurfacePrivate(EGLDisplay eglDisplay, - EGLSurface eglSurface, - EGLContext eglContext) - : texture(0), frameBufferObject(0), depthbuf(0), display(eglDisplay), - surface(eglSurface), context(eglContext) -{ -} - -inline static int nextPowerOfTwo(uint v) -{ - v--; - v |= v >> 1; - v |= v >> 2; - v |= v >> 4; - v |= v >> 8; - v |= v >> 16; - ++v; - return v; -} - -/*! - \class QAhiGLWindowSurface - \preliminary - \internal - - \brief The QAhiGLWindowSurface class provides the drawing area - for top-level windows using OpenGL for drawing on an ATI handheld - device. - - In \l{Qt for Embedded Linux}, the default behavior for each client is to - render widgets into an area of memory. The server then displays - the contents of that memory on the screen. For ATI handheld - devices using OpenGL, QAhiGLWindowSurface is the window surface - class that allocates and manages the memory areas in the clients - and the server. - - When a screen update is required, the server runs through all the - top-level windows that intersect with the region being updated, - ensuring that the clients have updated their window surfaces. Then - the server uses the screen driver to copy the contents of the - affected window surfaces into its composition and then display the - composition on the screen. - - \tableofcontents - - \section1 Pure Virtual Functions - - There are two window surface instances for each top-level window. - One is used by the application when drawing a window, and the - other is used by the server application to make its copy for - building a window composition to send to the screen. - - The key() function is implemented to uniquely identify this window - surface class as "ahigl", and the isValid() function is - implemented to determine whether the associated window is still - acceptable for representation by this window surface class. It - must either be a window using an \l {QGLWidget} {OpenGL widget}, - or it must be a window whose frame is no bigger than 256 x 256. - - The setGeometry() function is implemented to change the geometry - of the frame buffer whenever the geometry of the associated - top-level window changes. The image() function is called by the - window system when building window compositions to return an image - of the top-level window. - - The paintDevice() function is implemented to return the appropriate - paint device. - - \section1 Virtual Functions - - When painting onto the surface, the window system will always call - the beginPaint() function before any painting operations are - performed. It ensures that the correct frame buffer will be used - by the OpenGL library for painting operations. Likewise, the - endPaint() function is automatically called when the painting is - done, but it isn't implemented for this example. -*/ - -/*! - This is the client side constructor. - */ -//! [1] -QAhiGLWindowSurface::QAhiGLWindowSurface(QWidget *widget, - EGLDisplay eglDisplay, - EGLSurface eglSurface, - EGLContext eglContext) - : QWSGLWindowSurface(widget) -{ - d_ptr = new QAhiGLWindowSurfacePrivate(eglDisplay, eglSurface, eglContext); - d_ptr->device = new QWSGLPaintDevice(widget); - - setSurfaceFlags(QWSWindowSurface::Buffered); -} -//! [1] - -/*! - This is the server side constructor. - */ -//! [2] -QAhiGLWindowSurface::QAhiGLWindowSurface(EGLDisplay eglDisplay, - EGLSurface eglSurface, - EGLContext eglContext) -{ - d_ptr = new QAhiGLWindowSurfacePrivate(eglDisplay, eglSurface, eglContext); - setSurfaceFlags(QWSWindowSurface::Buffered); -} -//! [2] - -/*! - The destructor deletes the OpenGL structures held by the - private implementation class, and then it deletes the - private implementation class. - */ -QAhiGLWindowSurface::~QAhiGLWindowSurface() -{ - if (d_ptr->texture) - glDeleteTextures(1, &d_ptr->texture); - if (d_ptr->depthbuf) - glDeleteRenderbuffersOES(1, &d_ptr->depthbuf); - if (d_ptr->frameBufferObject) - glDeleteFramebuffersOES(1, &d_ptr->frameBufferObject); - - delete d_ptr; -} - -/*! - This function changes the geometry of the frame buffer - to the geometry in \a rect. It is called whenever the - geometry of the associated top-level window changes. It - also rebuilds the window surface's texture and binds - the OpenGL identifier to the texture for use by the - OpenGL library. - */ -//! [3] -void QAhiGLWindowSurface::setGeometry(const QRect &rect) -{ - QSize size = rect.size(); - - const QWidget *w = window(); - if (w && !w->mask().isEmpty()) { - const QRegion region = w->mask() - & rect.translated(-w->geometry().topLeft()); - size = region.boundingRect().size(); - } - - if (geometry().size() != size) { - - // Driver specific limitations: - // FBO maximimum size of 256x256 - // Depth buffer required - - d_ptr->textureWidth = qMin(256, nextPowerOfTwo(size.width())); - d_ptr->textureHeight = qMin(256, nextPowerOfTwo(size.height())); - - glGenTextures(1, &d_ptr->texture); - glBindTexture(GL_TEXTURE_2D, d_ptr->texture); - - glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); - glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); - - const int bufSize = d_ptr->textureWidth * d_ptr->textureHeight * 2; - GLshort buf[bufSize]; - memset(buf, 0, sizeof(GLshort) * bufSize); - - glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, d_ptr->textureWidth, - d_ptr->textureHeight, 0, - GL_RGBA, GL_UNSIGNED_BYTE, buf); - - glGenRenderbuffersOES(1, &d_ptr->depthbuf); - glBindRenderbufferOES(GL_RENDERBUFFER_EXT, d_ptr->depthbuf); - glRenderbufferStorageOES(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT16, - d_ptr->textureWidth, d_ptr->textureHeight); - - glGenFramebuffersOES(1, &d_ptr->frameBufferObject); - glBindFramebufferOES(GL_FRAMEBUFFER_EXT, d_ptr->frameBufferObject); - - glFramebufferTexture2DOES(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, - GL_TEXTURE_2D, d_ptr->texture, 0); - glFramebufferRenderbufferOES(GL_FRAMEBUFFER_EXT, - GL_DEPTH_ATTACHMENT_EXT, - GL_RENDERBUFFER_EXT, d_ptr->depthbuf); - glBindFramebufferOES(GL_FRAMEBUFFER_EXT, 0); - } - - QWSGLWindowSurface::setGeometry(rect); -} -//! [3] - -/*! - Returns the window surface's texture as a QByteArray. - */ -QByteArray QAhiGLWindowSurface::permanentState() const -{ - QByteArray array; - array.resize(sizeof(GLuint)); - - char *ptr = array.data(); - reinterpret_cast<GLuint*>(ptr)[0] = textureId(); - return array; -} - -/*! - Sets the window surface's texture to \a data. - */ -void QAhiGLWindowSurface::setPermanentState(const QByteArray &data) -{ - const char *ptr = data.constData(); - d_ptr->texture = reinterpret_cast<const GLuint*>(ptr)[0]; -} - -/*! - Returns the paint device being used for this window surface. - */ -QPaintDevice *QAhiGLWindowSurface::paintDevice() -{ - return d_ptr->device; -} - -/*! - Returns the window surface's texture. - */ -GLuint QAhiGLWindowSurface::textureId() const -{ - return d_ptr->texture; -} - -/*! - The \l {QWSServer} {window system} always calls this function - before any painting operations begin for this window surface. - It ensures that the correct frame buffer will be used by the - OpenGL library for painting operations. - */ -//! [4] -void QAhiGLWindowSurface::beginPaint(const QRegion ®ion) -{ - QWSGLWindowSurface::beginPaint(region); - - if (d_ptr->frameBufferObject) - glBindFramebufferOES(GL_FRAMEBUFFER_EXT, d_ptr->frameBufferObject); -} -//! [4] - -/*! - This function returns true if the window associated with - this window surface can still rendered using this window - surface class. Either the window's top-level widget must - be an \l {QGLWidget} {OpenGL widget}, or the window's - frame must be no bigger than 256 x 256. - */ -//! [5] -bool QAhiGLWindowSurface::isValid() const -{ - if (!qobject_cast<QGLWidget*>(window())) { - const QRect r = window()->frameGeometry(); - if (r.width() > 256 || r.height() > 256) - return false; - } - return true; -} -//! [5] |