source: trunk/src/opengl/qgl_qws.cpp@ 780

Last change on this file since 780 was 769, checked in by Dmitry A. Kuminov, 15 years ago

trunk: Merged in qt 4.6.3 sources from branches/vendor/nokia/qt.

  • Property svn:eol-style set to native
File size: 9.9 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation ([email protected])
6**
7** This file is part of the QtOpenGL module of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and Nokia.
15**
16** GNU Lesser General Public License Usage
17** Alternatively, this file may be used under the terms of the GNU Lesser
18** General Public License version 2.1 as published by the Free Software
19** Foundation and appearing in the file LICENSE.LGPL included in the
20** packaging of this file. Please review the following information to
21** ensure the GNU Lesser General Public License version 2.1 requirements
22** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
23**
24** In addition, as a special exception, Nokia gives you certain additional
25** rights. These rights are described in the Nokia Qt LGPL Exception
26** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
36** If you have questions regarding the use of this file, please contact
37** Nokia at [email protected].
38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#include "qgl.h"
43#include "qgl_egl_p.h"
44#include "qglpixelbuffer.h"
45
46#include <qglscreen_qws.h>
47#include <qscreenproxy_qws.h>
48#include <private/qglwindowsurface_qws_p.h>
49
50#include <private/qbackingstore_p.h>
51#include <private/qfont_p.h>
52#include <private/qfontengine_p.h>
53#include <private/qgl_p.h>
54#include <private/qpaintengine_opengl_p.h>
55#include <qpixmap.h>
56#include <qtimer.h>
57#include <qapplication.h>
58#include <qstack.h>
59#include <qdesktopwidget.h>
60#include <qdebug.h>
61#include <qvarlengtharray.h>
62
63QT_BEGIN_NAMESPACE
64
65static QGLScreen *glScreenForDevice(QPaintDevice *device)
66{
67 QScreen *screen = qt_screen;
68 if (screen->classId() == QScreen::MultiClass) {
69 int screenNumber;
70 if (device && device->devType() == QInternal::Widget)
71 screenNumber = qApp->desktop()->screenNumber(static_cast<QWidget *>(device));
72 else
73 screenNumber = 0;
74 screen = screen->subScreens()[screenNumber];
75 }
76 while (screen->classId() == QScreen::ProxyClass ||
77 screen->classId() == QScreen::TransformedClass) {
78 screen = static_cast<QProxyScreen *>(screen)->screen();
79 }
80 if (screen->classId() == QScreen::GLClass)
81 return static_cast<QGLScreen *>(screen);
82 else
83 return 0;
84}
85
86/*
87 QGLTemporaryContext implementation
88*/
89
90class QGLTemporaryContextPrivate
91{
92public:
93 QGLWidget *widget;
94};
95
96QGLTemporaryContext::QGLTemporaryContext(bool, QWidget *)
97 : d(new QGLTemporaryContextPrivate)
98{
99 d->widget = new QGLWidget;
100 d->widget->makeCurrent();
101}
102
103QGLTemporaryContext::~QGLTemporaryContext()
104{
105 delete d->widget;
106}
107
108/*****************************************************************************
109 QOpenGL debug facilities
110 *****************************************************************************/
111//#define DEBUG_OPENGL_REGION_UPDATE
112
113bool QGLFormat::hasOpenGLOverlays()
114{
115 QGLScreen *glScreen = glScreenForDevice(0);
116 if (glScreen)
117 return (glScreen->options() & QGLScreen::Overlays);
118 else
119 return false;
120}
121
122void qt_egl_add_platform_config(QEglProperties& props, QPaintDevice *device)
123{
124 // Find the QGLScreen for this paint device.
125 QGLScreen *glScreen = glScreenForDevice(device);
126 if (!glScreen) {
127 qWarning("QGLContext::chooseContext(): The screen is not a QGLScreen");
128 return;
129 }
130 int devType = device->devType();
131 if (devType == QInternal::Image)
132 props.setPixelFormat(static_cast<QImage *>(device)->format());
133 else
134 props.setPixelFormat(glScreen->pixelFormat());
135}
136
137static EGLSurface qt_egl_create_surface
138 (QEglContext *context, QPaintDevice *device,
139 const QEglProperties *properties = 0)
140{
141 // Get the screen surface functions, which are used to create native ids.
142 QGLScreen *glScreen = glScreenForDevice(device);
143 if (!glScreen)
144 return EGL_NO_SURFACE;
145 QGLScreenSurfaceFunctions *funcs = glScreen->surfaceFunctions();
146 if (!funcs)
147 return EGL_NO_SURFACE;
148
149 // Create the native drawable for the paint device.
150 int devType = device->devType();
151 EGLNativePixmapType pixmapDrawable = 0;
152 EGLNativeWindowType windowDrawable = 0;
153 bool ok;
154 if (devType == QInternal::Pixmap) {
155 ok = funcs->createNativePixmap(static_cast<QPixmap *>(device), &pixmapDrawable);
156 } else if (devType == QInternal::Image) {
157 ok = funcs->createNativeImage(static_cast<QImage *>(device), &pixmapDrawable);
158 } else {
159 ok = funcs->createNativeWindow(static_cast<QWidget *>(device), &windowDrawable);
160 }
161 if (!ok) {
162 qWarning("QEglContext::createSurface(): Cannot create the native EGL drawable");
163 return EGL_NO_SURFACE;
164 }
165
166 // Create the EGL surface to draw into, based on the native drawable.
167 const int *props;
168 if (properties)
169 props = properties->properties();
170 else
171 props = 0;
172 EGLSurface surf;
173 if (devType == QInternal::Widget) {
174 surf = eglCreateWindowSurface
175 (context->display(), context->config(), windowDrawable, props);
176 } else {
177 surf = eglCreatePixmapSurface
178 (context->display(), context->config(), pixmapDrawable, props);
179 }
180 if (surf == EGL_NO_SURFACE)
181 qWarning("QEglContext::createSurface(): Unable to create EGL surface, error = 0x%x", eglGetError());
182 return surf;
183}
184
185bool QGLContext::chooseContext(const QGLContext* shareContext)
186{
187 Q_D(QGLContext);
188
189 // Validate the device.
190 if (!device())
191 return false;
192 int devType = device()->devType();
193 if (devType != QInternal::Pixmap && devType != QInternal::Image && devType != QInternal::Widget) {
194 qWarning("QGLContext::chooseContext(): Cannot create QGLContext's for paint device type %d", devType);
195 return false;
196 }
197
198 // Get the display and initialize it.
199 d->eglContext = new QEglContext();
200 d->eglContext->setApi(QEgl::OpenGL);
201
202 // Construct the configuration we need for this surface.
203 QEglProperties configProps;
204 qt_egl_add_platform_config(configProps, device());
205 qt_egl_set_format(configProps, devType, d->glFormat);
206 configProps.setRenderableType(QEgl::OpenGL);
207
208 // Search for a matching configuration, reducing the complexity
209 // each time until we get something that matches.
210 if (!d->eglContext->chooseConfig(configProps)) {
211 delete d->eglContext;
212 d->eglContext = 0;
213 return false;
214 }
215
216 // Inform the higher layers about the actual format properties.
217 qt_egl_update_format(*(d->eglContext), d->glFormat);
218
219 // Create a new context for the configuration.
220 if (!d->eglContext->createContext
221 (shareContext ? shareContext->d_func()->eglContext : 0)) {
222 delete d->eglContext;
223 d->eglContext = 0;
224 return false;
225 }
226 d->sharing = d->eglContext->isSharing();
227 if (d->sharing && shareContext)
228 const_cast<QGLContext *>(shareContext)->d_func()->sharing = true;
229
230#if defined(EGL_VERSION_1_1)
231 if (d->glFormat.swapInterval() != -1 && devType == QInternal::Widget)
232 eglSwapInterval(d->eglContext->display(), d->glFormat.swapInterval());
233#endif
234
235 // Create the EGL surface to draw into. We cannot use
236 // QEglContext::createSurface() because it does not have
237 // access to the QGLScreen.
238 d->eglSurface = qt_egl_create_surface(d->eglContext, device());
239 if (d->eglSurface == EGL_NO_SURFACE) {
240 delete d->eglContext;
241 d->eglContext = 0;
242 return false;
243 }
244
245 return true;
246}
247
248
249bool QGLWidget::event(QEvent *e)
250{
251 return QWidget::event(e);
252}
253
254
255void QGLWidget::resizeEvent(QResizeEvent *)
256{
257 Q_D(QGLWidget);
258 if (!isValid())
259 return;
260 makeCurrent();
261 if (!d->glcx->initialized())
262 glInit();
263 resizeGL(width(), height());
264 //handle overlay
265}
266
267const QGLContext* QGLWidget::overlayContext() const
268{
269 return 0;
270}
271
272void QGLWidget::makeOverlayCurrent()
273{
274 //handle overlay
275}
276
277void QGLWidget::updateOverlayGL()
278{
279 //handle overlay
280}
281
282void QGLWidget::setContext(QGLContext *context, const QGLContext* shareContext, bool deleteOldContext)
283{
284 Q_D(QGLWidget);
285 if(context == 0) {
286 qWarning("QGLWidget::setContext: Cannot set null context");
287 return;
288 }
289
290 if(d->glcx)
291 d->glcx->doneCurrent();
292 QGLContext* oldcx = d->glcx;
293 d->glcx = context;
294 if(!d->glcx->isValid())
295 d->glcx->create(shareContext ? shareContext : oldcx);
296 if(deleteOldContext)
297 delete oldcx;
298}
299
300void QGLWidgetPrivate::init(QGLContext *context, const QGLWidget* shareWidget)
301{
302 Q_Q(QGLWidget);
303
304 QGLScreen *glScreen = glScreenForDevice(q);
305 if (glScreen) {
306 wsurf = static_cast<QWSGLWindowSurface*>(glScreen->createSurface(q));
307 q->setWindowSurface(wsurf);
308 }
309
310 initContext(context, shareWidget);
311
312 if(q->isValid() && glcx->format().hasOverlay()) {
313 //no overlay
314 qWarning("QtOpenGL ES doesn't currently support overlays");
315 }
316}
317
318void QGLWidgetPrivate::cleanupColormaps()
319{
320}
321
322const QGLColormap & QGLWidget::colormap() const
323{
324 return d_func()->cmap;
325}
326
327void QGLWidget::setColormap(const QGLColormap &)
328{
329}
330
331QT_END_NAMESPACE
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