|
1 /**************************************************************************** |
|
2 ** |
|
3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
|
4 ** All rights reserved. |
|
5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
|
6 ** |
|
7 ** This file is part of the QtOpenGL module of the Qt Toolkit. |
|
8 ** |
|
9 ** $QT_BEGIN_LICENSE:LGPL$ |
|
10 ** No Commercial Usage |
|
11 ** This file contains pre-release code and may not be distributed. |
|
12 ** You may use this file in accordance with the terms and conditions |
|
13 ** contained in the Technology Preview License Agreement accompanying |
|
14 ** this package. |
|
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 ** If you have questions regarding the use of this file, please contact |
|
29 ** Nokia at qt-info@nokia.com. |
|
30 ** |
|
31 ** |
|
32 ** |
|
33 ** |
|
34 ** |
|
35 ** |
|
36 ** |
|
37 ** |
|
38 ** $QT_END_LICENSE$ |
|
39 ** |
|
40 ****************************************************************************/ |
|
41 |
|
42 #include <private/qglpaintdevice_p.h> |
|
43 #include <private/qgl_p.h> |
|
44 #include <private/qglpixelbuffer_p.h> |
|
45 #include <private/qglframebufferobject_p.h> |
|
46 #include <private/qwindowsurface_gl_p.h> |
|
47 #ifdef Q_WS_X11 |
|
48 #include <private/qpixmapdata_x11gl_p.h> |
|
49 #endif |
|
50 |
|
51 #if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL) |
|
52 #include <private/qpixmapdata_gl_p.h> |
|
53 #endif |
|
54 |
|
55 #if defined(QT_OPENGL_ES_1_CL) |
|
56 #include "qgl_cl_p.h" |
|
57 #endif |
|
58 |
|
59 QT_BEGIN_NAMESPACE |
|
60 |
|
61 QGLPaintDevice::QGLPaintDevice() |
|
62 : m_thisFBO(0) |
|
63 { |
|
64 } |
|
65 |
|
66 QGLPaintDevice::~QGLPaintDevice() |
|
67 { |
|
68 } |
|
69 |
|
70 |
|
71 void QGLPaintDevice::beginPaint() |
|
72 { |
|
73 // Make sure our context is the current one: |
|
74 QGLContext *ctx = context(); |
|
75 if (ctx != QGLContext::currentContext()) |
|
76 ctx->makeCurrent(); |
|
77 |
|
78 // Record the currently bound FBO so we can restore it again |
|
79 // in endPaint() and bind this device's FBO |
|
80 // |
|
81 // Note: m_thisFBO could be zero if the paint device is not |
|
82 // backed by an FBO (e.g. window back buffer). But there could |
|
83 // be a previous FBO bound to the context which we need to |
|
84 // explicitly unbind. Otherwise the painting will go into |
|
85 // the previous FBO instead of to the window. |
|
86 m_previousFBO = ctx->d_func()->current_fbo; |
|
87 |
|
88 if (m_previousFBO != m_thisFBO) { |
|
89 ctx->d_ptr->current_fbo = m_thisFBO; |
|
90 glBindFramebuffer(GL_FRAMEBUFFER_EXT, m_thisFBO); |
|
91 } |
|
92 |
|
93 // Set the default fbo for the context to m_thisFBO so that |
|
94 // if some raw GL code between beginNativePainting() and |
|
95 // endNativePainting() calls QGLFramebufferObject::release(), |
|
96 // painting will revert to the window surface's fbo. |
|
97 ctx->d_ptr->default_fbo = m_thisFBO; |
|
98 } |
|
99 |
|
100 void QGLPaintDevice::ensureActiveTarget() |
|
101 { |
|
102 QGLContext* ctx = context(); |
|
103 if (ctx != QGLContext::currentContext()) |
|
104 ctx->makeCurrent(); |
|
105 |
|
106 if (ctx->d_ptr->current_fbo != m_thisFBO) { |
|
107 ctx->d_ptr->current_fbo = m_thisFBO; |
|
108 glBindFramebuffer(GL_FRAMEBUFFER_EXT, m_thisFBO); |
|
109 } |
|
110 |
|
111 ctx->d_ptr->default_fbo = m_thisFBO; |
|
112 } |
|
113 |
|
114 void QGLPaintDevice::endPaint() |
|
115 { |
|
116 // Make sure the FBO bound at beginPaint is re-bound again here: |
|
117 QGLContext *ctx = context(); |
|
118 if (m_previousFBO != ctx->d_func()->current_fbo) { |
|
119 ctx->d_ptr->current_fbo = m_previousFBO; |
|
120 glBindFramebuffer(GL_FRAMEBUFFER_EXT, m_previousFBO); |
|
121 } |
|
122 |
|
123 ctx->d_ptr->default_fbo = 0; |
|
124 } |
|
125 |
|
126 QGLFormat QGLPaintDevice::format() const |
|
127 { |
|
128 return context()->format(); |
|
129 } |
|
130 |
|
131 bool QGLPaintDevice::alphaRequested() const |
|
132 { |
|
133 return context()->d_func()->reqFormat.alpha(); |
|
134 } |
|
135 |
|
136 |
|
137 |
|
138 |
|
139 ////////////////// QGLWidgetGLPaintDevice ////////////////// |
|
140 |
|
141 QGLWidgetGLPaintDevice::QGLWidgetGLPaintDevice() |
|
142 { |
|
143 } |
|
144 |
|
145 QPaintEngine* QGLWidgetGLPaintDevice::paintEngine() const |
|
146 { |
|
147 return glWidget->paintEngine(); |
|
148 } |
|
149 |
|
150 void QGLWidgetGLPaintDevice::setWidget(QGLWidget* w) |
|
151 { |
|
152 glWidget = w; |
|
153 } |
|
154 |
|
155 void QGLWidgetGLPaintDevice::beginPaint() |
|
156 { |
|
157 QGLPaintDevice::beginPaint(); |
|
158 if (!glWidget->d_func()->disable_clear_on_painter_begin && glWidget->autoFillBackground()) { |
|
159 if (glWidget->testAttribute(Qt::WA_TranslucentBackground)) |
|
160 glClearColor(0.0, 0.0, 0.0, 0.0); |
|
161 else { |
|
162 const QColor &c = glWidget->palette().brush(glWidget->backgroundRole()).color(); |
|
163 float alpha = c.alphaF(); |
|
164 glClearColor(c.redF() * alpha, c.greenF() * alpha, c.blueF() * alpha, alpha); |
|
165 } |
|
166 glClear(GL_COLOR_BUFFER_BIT); |
|
167 } |
|
168 } |
|
169 |
|
170 void QGLWidgetGLPaintDevice::endPaint() |
|
171 { |
|
172 if (glWidget->autoBufferSwap()) |
|
173 glWidget->swapBuffers(); |
|
174 QGLPaintDevice::endPaint(); |
|
175 } |
|
176 |
|
177 |
|
178 QSize QGLWidgetGLPaintDevice::size() const |
|
179 { |
|
180 return glWidget->size(); |
|
181 } |
|
182 |
|
183 QGLContext* QGLWidgetGLPaintDevice::context() const |
|
184 { |
|
185 return const_cast<QGLContext*>(glWidget->context()); |
|
186 } |
|
187 |
|
188 // returns the QGLPaintDevice for the given QPaintDevice |
|
189 QGLPaintDevice* QGLPaintDevice::getDevice(QPaintDevice* pd) |
|
190 { |
|
191 QGLPaintDevice* glpd = 0; |
|
192 |
|
193 switch(pd->devType()) { |
|
194 case QInternal::Widget: |
|
195 // Should not be called on a non-gl widget: |
|
196 Q_ASSERT(qobject_cast<QGLWidget*>(static_cast<QWidget*>(pd))); |
|
197 glpd = &(static_cast<QGLWidget*>(pd)->d_func()->glDevice); |
|
198 break; |
|
199 case QInternal::Pbuffer: |
|
200 glpd = &(static_cast<QGLPixelBuffer*>(pd)->d_func()->glDevice); |
|
201 break; |
|
202 case QInternal::FramebufferObject: |
|
203 glpd = &(static_cast<QGLFramebufferObject*>(pd)->d_func()->glDevice); |
|
204 break; |
|
205 case QInternal::Pixmap: { |
|
206 #if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL) |
|
207 QPixmapData* pmd = static_cast<QPixmap*>(pd)->pixmapData(); |
|
208 if (pmd->classId() == QPixmapData::OpenGLClass) |
|
209 glpd = static_cast<QGLPixmapData*>(pmd)->glDevice(); |
|
210 #ifdef Q_WS_X11 |
|
211 else if (pmd->classId() == QPixmapData::X11Class) |
|
212 glpd = static_cast<QX11GLPixmapData*>(pmd); |
|
213 #endif |
|
214 else |
|
215 qWarning("Pixmap type not supported for GL rendering"); |
|
216 #else |
|
217 qWarning("Pixmap render targets not supported on OpenGL ES 1.x"); |
|
218 #endif |
|
219 break; |
|
220 } |
|
221 default: |
|
222 qWarning("QGLPaintDevice::getDevice() - Unknown device type %d", pd->devType()); |
|
223 break; |
|
224 } |
|
225 |
|
226 return glpd; |
|
227 } |
|
228 |
|
229 QT_END_NAMESPACE |