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41
42 #include "qmeegolivepixmapdata.h"
43 #include "qmeegorasterpixmapdata.h"
44 #include <private/qimage_p.h>
45 #include <private/qwindowsurface_gl_p.h>
46 #include <private/qeglcontext_p.h>
47 #include <private/qapplication_p.h>
48 #include <private/qgraphicssystem_runtime_p.h>
49 #include <private/qpixmap_x11_p.h>
50 #include <stdio.h>
51
52 static QMeeGoLivePixmapDataList all_live_pixmaps;
53
54 static EGLint lock_attribs[] = {
55 EGL_MAP_PRESERVE_PIXELS_KHR, EGL_TRUE,
56 EGL_LOCK_USAGE_HINT_KHR, EGL_READ_SURFACE_BIT_KHR | EGL_WRITE_SURFACE_BIT_KHR,
57 EGL_NONE
58 };
59
60 static EGLint preserved_attribs[] = {
61 EGL_IMAGE_PRESERVED_KHR, EGL_TRUE,
62 EGL_NONE
63 };
64
65 // as copied from qwindowsurface.cpp
qt_scrollRectInImage(QImage & img,const QRect & rect,const QPoint & offset)66 void qt_scrollRectInImage(QImage &img, const QRect &rect, const QPoint &offset)
67 {
68 // make sure we don't detach
69 uchar *mem = const_cast<uchar*>(const_cast<const QImage &>(img).bits());
70
71 int lineskip = img.bytesPerLine();
72 int depth = img.depth() >> 3;
73
74 const QRect imageRect(0, 0, img.width(), img.height());
75 const QRect r = rect & imageRect & imageRect.translated(-offset);
76 const QPoint p = rect.topLeft() + offset;
77
78 if (r.isEmpty())
79 return;
80
81 const uchar *src;
82 uchar *dest;
83
84 if (r.top() < p.y()) {
85 src = mem + r.bottom() * lineskip + r.left() * depth;
86 dest = mem + (p.y() + r.height() - 1) * lineskip + p.x() * depth;
87 lineskip = -lineskip;
88 } else {
89 src = mem + r.top() * lineskip + r.left() * depth;
90 dest = mem + p.y() * lineskip + p.x() * depth;
91 }
92
93 const int w = r.width();
94 int h = r.height();
95 const int bytes = w * depth;
96
97 // overlapping segments?
98 if (offset.y() == 0 && qAbs(offset.x()) < w) {
99 do {
100 ::memmove(dest, src, bytes);
101 dest += lineskip;
102 src += lineskip;
103 } while (--h);
104 } else {
105 do {
106 ::memcpy(dest, src, bytes);
107 dest += lineskip;
108 src += lineskip;
109 } while (--h);
110 }
111 }
112
113 /* Public */
114
QMeeGoLivePixmapData(int w,int h,QImage::Format format)115 QMeeGoLivePixmapData::QMeeGoLivePixmapData(int w, int h, QImage::Format format) : QGLPixmapData(QPixmapData::PixmapType)
116 {
117 QImage image(w, h, format);
118 QX11PixmapData *pmd = new QX11PixmapData(QPixmapData::PixmapType);
119 pmd->fromImage(image, Qt::NoOpaqueDetection);
120 backingX11Pixmap = new QPixmap(pmd);
121
122 initializeThroughEGLImage();
123
124 pos = all_live_pixmaps.insert(all_live_pixmaps.begin(), this);
125 }
126
QMeeGoLivePixmapData(Qt::HANDLE h)127 QMeeGoLivePixmapData::QMeeGoLivePixmapData(Qt::HANDLE h) : QGLPixmapData(QPixmapData::PixmapType)
128 {
129 backingX11Pixmap = new QPixmap(QPixmap::fromX11Pixmap(h));
130 initializeThroughEGLImage();
131
132 pos = all_live_pixmaps.insert(all_live_pixmaps.begin(), this);
133 }
134
~QMeeGoLivePixmapData()135 QMeeGoLivePixmapData::~QMeeGoLivePixmapData()
136 {
137 delete backingX11Pixmap;
138 all_live_pixmaps.erase(pos);
139 }
140
initializeThroughEGLImage()141 void QMeeGoLivePixmapData::initializeThroughEGLImage()
142 {
143 if (texture()->id != 0)
144 return;
145
146 QGLShareContextScope ctx(qt_gl_share_widget()->context());
147 QMeeGoExtensions::ensureInitialized();
148
149 EGLImageKHR eglImage = EGL_NO_IMAGE_KHR;
150 GLuint newTextureId = 0;
151
152 eglImage = QEgl::eglCreateImageKHR(QEgl::display(), EGL_NO_CONTEXT, EGL_NATIVE_PIXMAP_KHR,
153 (EGLClientBuffer) backingX11Pixmap->handle(), preserved_attribs);
154
155 if (eglImage == EGL_NO_IMAGE_KHR) {
156 qWarning("eglCreateImageKHR failed (live texture)!");
157 return;
158 }
159
160 glGenTextures(1, &newTextureId);
161 glBindTexture(GL_TEXTURE_2D, newTextureId);
162
163 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (EGLImageKHR) eglImage);
164 if (glGetError() == GL_NO_ERROR) {
165 resize(backingX11Pixmap->width(), backingX11Pixmap->height());
166 texture()->id = newTextureId;
167 texture()->options &= ~QGLContext::InvertedYBindOption;
168 m_hasAlpha = backingX11Pixmap->hasAlphaChannel();
169 } else {
170 qWarning("Failed to create a texture from an egl image (live texture)!");
171 glDeleteTextures(1, &newTextureId);
172 }
173
174 QEgl::eglDestroyImageKHR(QEgl::display(), eglImage);
175 }
176
createCompatiblePixmapData() const177 QPixmapData *QMeeGoLivePixmapData::createCompatiblePixmapData() const
178 {
179 qWarning("Create compatible called on live pixmap! Expect fail soon...");
180 return new QMeeGoRasterPixmapData(pixelType());
181 }
182
lock(EGLSyncKHR fenceSync)183 QImage* QMeeGoLivePixmapData::lock(EGLSyncKHR fenceSync)
184 {
185 QGLShareContextScope ctx(qt_gl_share_widget()->context());
186 QMeeGoExtensions::ensureInitialized();
187
188 if (fenceSync) {
189 QMeeGoExtensions::eglClientWaitSyncKHR(QEgl::display(),
190 fenceSync,
191 EGL_SYNC_FLUSH_COMMANDS_BIT_KHR,
192 EGL_FOREVER_KHR);
193 }
194
195 void *data = 0;
196 int pitch = 0;
197 int surfaceWidth = 0;
198 int surfaceHeight = 0;
199 EGLSurface surface = 0;
200 QImage::Format format;
201 lockedImage = QImage();
202
203 surface = getSurfaceForBackingPixmap();
204 if (! QMeeGoExtensions::eglLockSurfaceKHR(QEgl::display(), surface, lock_attribs)) {
205 qWarning("Failed to lock surface (live texture)!");
206 return &lockedImage;
207 }
208
209 eglQuerySurface(QEgl::display(), surface, EGL_BITMAP_POINTER_KHR, (EGLint*) &data);
210 eglQuerySurface(QEgl::display(), surface, EGL_BITMAP_PITCH_KHR, (EGLint*) &pitch);
211 eglQuerySurface(QEgl::display(), surface, EGL_WIDTH, (EGLint*) &surfaceWidth);
212 eglQuerySurface(QEgl::display(), surface, EGL_HEIGHT, (EGLint*) &surfaceHeight);
213
214 // Ok, here we know we just support those two formats. Real solution would be:
215 // query also the format.
216 if (backingX11Pixmap->depth() > 16)
217 format = QImage::Format_ARGB32_Premultiplied;
218 else
219 format = QImage::Format_RGB16;
220
221 if (data == NULL || pitch == 0) {
222 qWarning("Failed to query the live texture!");
223 return &lockedImage;
224 }
225
226 if (width() != surfaceWidth || height() != surfaceHeight) {
227 qWarning("Live texture dimensions don't match!");
228 QMeeGoExtensions::eglUnlockSurfaceKHR(QEgl::display(), surface);
229 return &lockedImage;
230 }
231
232 lockedImage = QImage((uchar *) data, width(), height(), pitch, format);
233 return &lockedImage;
234 }
235
release(QImage *)236 bool QMeeGoLivePixmapData::release(QImage* /*img*/)
237 {
238 QGLShareContextScope ctx(qt_gl_share_widget()->context());
239 QMeeGoExtensions::ensureInitialized();
240
241 if (QMeeGoExtensions::eglUnlockSurfaceKHR(QEgl::display(), getSurfaceForBackingPixmap())) {
242 lockedImage = QImage();
243 return true;
244 } else {
245 lockedImage = QImage();
246 return false;
247 }
248 }
249
handle()250 Qt::HANDLE QMeeGoLivePixmapData::handle()
251 {
252 return backingX11Pixmap->handle();
253 }
254
scroll(int dx,int dy,const QRect & rect)255 bool QMeeGoLivePixmapData::scroll(int dx, int dy, const QRect &rect)
256 {
257 lock(NULL);
258
259 if (!lockedImage.isNull())
260 qt_scrollRectInImage(lockedImage, rect, QPoint(dx, dy));
261
262 release(&lockedImage);
263 return true;
264 }
265
getSurfaceForBackingPixmap()266 EGLSurface QMeeGoLivePixmapData::getSurfaceForBackingPixmap()
267 {
268 initializeThroughEGLImage();
269
270 // This code is a crative remix of the stuff that can be found in the
271 // Qt's TFP implementation in /src/opengl/qgl_x11egl.cpp ::bindiTextureFromNativePixmap
272 QX11PixmapData *pixmapData = static_cast<QX11PixmapData*>(backingX11Pixmap->data_ptr().data());
273 Q_ASSERT(pixmapData->classId() == QPixmapData::X11Class);
274 bool hasAlpha = pixmapData->hasAlphaChannel();
275
276 if (pixmapData->gl_surface &&
277 hasAlpha == (pixmapData->flags & QX11PixmapData::GlSurfaceCreatedWithAlpha))
278 return pixmapData->gl_surface;
279
280 // Check to see if the surface is still valid
281 if (pixmapData->gl_surface &&
282 hasAlpha != ((pixmapData->flags & QX11PixmapData::GlSurfaceCreatedWithAlpha) > 0)) {
283 // Surface is invalid!
284 destroySurfaceForPixmapData(pixmapData);
285 }
286
287 if (pixmapData->gl_surface == 0) {
288 EGLConfig config = QEgl::defaultConfig(QInternal::Pixmap,
289 QEgl::OpenGL,
290 hasAlpha ? QEgl::Translucent : QEgl::NoOptions);
291
292 pixmapData->gl_surface = (void*)QEgl::createSurface(backingX11Pixmap, config);
293
294 if (hasAlpha)
295 pixmapData->flags |= QX11PixmapData::GlSurfaceCreatedWithAlpha;
296 else
297 pixmapData->flags &= ~QX11PixmapData::GlSurfaceCreatedWithAlpha;
298
299 if (pixmapData->gl_surface == (void*)EGL_NO_SURFACE)
300 return NULL;
301 }
302
303 return pixmapData->gl_surface;
304 }
305
destroySurfaceForPixmapData(QPixmapData * pmd)306 void QMeeGoLivePixmapData::destroySurfaceForPixmapData(QPixmapData* pmd)
307 {
308 Q_ASSERT(pmd->classId() == QPixmapData::X11Class);
309 QX11PixmapData *pixmapData = static_cast<QX11PixmapData*>(pmd);
310 if (pixmapData->gl_surface) {
311 eglDestroySurface(QEgl::display(), (EGLSurface)pixmapData->gl_surface);
312 pixmapData->gl_surface = 0;
313 }
314 }
315
invalidateSurfaces()316 void QMeeGoLivePixmapData::invalidateSurfaces()
317 {
318 foreach (QMeeGoLivePixmapData *data, all_live_pixmaps) {
319 QX11PixmapData *pixmapData = static_cast<QX11PixmapData*>(data->backingX11Pixmap->data_ptr().data());
320 *data->texture() = QGLTexture();
321 pixmapData->gl_surface = 0;
322 }
323 }
324