2 * Copyright 2010, The Android Open Source Project
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5 * modification, are permitted provided that the following conditions
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11 * documentation and/or other materials provided with the distribution.
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27 #include "GLWebViewState.h"
29 #if USE(ACCELERATED_COMPOSITING)
31 #include "BaseLayerAndroid.h"
32 #include "ClassTracker.h"
34 #include "ImagesManager.h"
35 #include "LayerAndroid.h"
37 #include "TilesManager.h"
38 #include "TilesTracker.h"
39 #include <wtf/CurrentTime.h>
41 #include <cutils/log.h>
42 #include <wtf/text/CString.h>
45 #define XLOGC(...) android_printLog(ANDROID_LOG_DEBUG, "GLWebViewState", __VA_ARGS__)
50 #define XLOG(...) android_printLog(ANDROID_LOG_DEBUG, "GLWebViewState", __VA_ARGS__)
59 #define FIRST_TILED_PAGE_ID 1
60 #define SECOND_TILED_PAGE_ID 2
62 #define FRAMERATE_CAP 0.01666 // We cap at 60 fps
64 // log warnings if scale goes outside this range
65 #define MIN_SCALE_WARNING 0.1
66 #define MAX_SCALE_WARNING 10
70 using namespace android;
72 GLWebViewState::GLWebViewState(android::Mutex* buttonMutex)
74 , m_paintingBaseLayer(0)
75 , m_currentBaseLayer(0)
76 , m_currentBaseLayerRoot(0)
77 , m_currentPictureCounter(0)
79 , m_frameworkInval(0, 0, 0, 0)
80 , m_frameworkLayersInval(0, 0, 0, 0)
81 , m_globalButtonMutex(buttonMutex)
82 , m_baseLayerUpdate(true)
83 , m_backgroundColor(SK_ColorWHITE)
84 , m_isScrolling(false)
87 , m_expandedTileBoundsX(0)
88 , m_expandedTileBoundsY(0)
91 m_viewport.setEmpty();
92 m_futureViewportTileBounds.setEmpty();
93 m_viewportTileBounds.setEmpty();
94 m_preZoomBounds.setEmpty();
96 m_tiledPageA = new TiledPage(FIRST_TILED_PAGE_ID, this);
97 m_tiledPageB = new TiledPage(SECOND_TILED_PAGE_ID, this);
100 ClassTracker::instance()->increment("GLWebViewState");
104 m_totalTimeCounter = 0;
105 m_measurePerfs = false;
109 GLWebViewState::~GLWebViewState()
111 // Unref the existing tree/PaintedSurfaces
112 if (m_currentBaseLayerRoot)
113 TilesManager::instance()->swapLayersTextures(m_currentBaseLayerRoot, 0);
115 // Take care of the transfer queue such that Tex Gen thread will not stuck
116 TilesManager::instance()->unregisterGLWebViewState(this);
118 // We have to destroy the two tiled pages first as their destructor
119 // may depend on the existence of this GLWebViewState and some of its
120 // instance variables in order to complete.
121 // Explicitely, currently we need to have the m_paintingBaseLayer around
122 // in order to complete any pending paint operations (the tiled pages
123 // will remove any pending operations, and wait if one is underway).
126 SkSafeUnref(m_paintingBaseLayer);
127 SkSafeUnref(m_currentBaseLayer);
128 SkSafeUnref(m_currentBaseLayerRoot);
129 m_paintingBaseLayer = 0;
130 m_currentBaseLayer = 0;
131 m_currentBaseLayerRoot = 0;
133 ClassTracker::instance()->decrement("GLWebViewState");
138 void GLWebViewState::setBaseLayer(BaseLayerAndroid* layer, const SkRegion& inval,
139 bool showVisualIndicator, bool isPictureAfterFirstLayout)
141 android::Mutex::Autolock lock(m_baseLayerLock);
142 if (!layer || isPictureAfterFirstLayout) {
143 m_tiledPageA->discardTextures();
144 m_tiledPageB->discardTextures();
146 if (isPictureAfterFirstLayout) {
147 m_baseLayerUpdate = true;
148 m_invalidateRegion.setEmpty();
152 SkSafeUnref(m_currentBaseLayer);
153 m_currentBaseLayer = layer;
156 // copy content from old composited root to new
157 LayerAndroid* oldRoot = m_currentBaseLayerRoot;
159 layer->setGLWebViewState(this);
160 m_currentBaseLayerRoot = static_cast<LayerAndroid*>(layer->getChild(0));
161 SkSafeRef(m_currentBaseLayerRoot);
163 m_currentBaseLayerRoot = 0;
165 if (oldRoot != m_currentBaseLayerRoot)
166 TilesManager::instance()->swapLayersTextures(oldRoot, m_currentBaseLayerRoot);
167 SkSafeUnref(oldRoot);
169 // We only update the base layer if we are not currently
170 // waiting for a tiledPage to be painted
171 if (m_baseLayerUpdate) {
173 SkSafeUnref(m_paintingBaseLayer);
174 m_paintingBaseLayer = layer;
176 m_glExtras.setDrawExtra(0);
180 if (m_measurePerfs && !showVisualIndicator)
182 m_measurePerfs = showVisualIndicator;
185 TilesManager::instance()->setShowVisualIndicator(showVisualIndicator);
188 void GLWebViewState::invalRegion(const SkRegion& region)
190 SkRegion::Iterator iterator(region);
191 while (!iterator.done()) {
192 SkIRect r = iterator.rect();
193 IntRect ir(r.fLeft, r.fTop, r.width(), r.height());
199 void GLWebViewState::unlockBaseLayerUpdate() {
200 if (m_baseLayerUpdate)
203 m_baseLayerUpdate = true;
204 android::Mutex::Autolock lock(m_baseLayerLock);
205 SkSafeRef(m_currentBaseLayer);
206 SkSafeUnref(m_paintingBaseLayer);
207 m_paintingBaseLayer = m_currentBaseLayer;
209 invalRegion(m_invalidateRegion);
210 m_invalidateRegion.setEmpty();
213 void GLWebViewState::inval(const IntRect& rect)
215 if (m_baseLayerUpdate) {
216 // base layer isn't locked, so go ahead and issue the inval to both tiled pages
217 m_currentPictureCounter++;
218 if (!rect.isEmpty()) {
219 // find which tiles fall within the invalRect and mark them as dirty
220 m_tiledPageA->invalidateRect(rect, m_currentPictureCounter);
221 m_tiledPageB->invalidateRect(rect, m_currentPictureCounter);
222 if (m_frameworkInval.isEmpty())
223 m_frameworkInval = rect;
225 m_frameworkInval.unite(rect);
226 XLOG("intermediate invalRect(%d, %d, %d, %d) after unite with rect %d %d %d %d", m_frameworkInval.x(),
227 m_frameworkInval.y(), m_frameworkInval.width(), m_frameworkInval.height(),
228 rect.x(), rect.y(), rect.width(), rect.height());
231 // base layer is locked, so defer invalidation until unlockBaseLayerUpdate()
232 m_invalidateRegion.op(rect.x(), rect.y(), rect.maxX(), rect.maxY(), SkRegion::kUnion_Op);
234 TilesManager::instance()->getProfiler()->nextInval(rect, zoomManager()->currentScale());
237 unsigned int GLWebViewState::paintBaseLayerContent(SkCanvas* canvas)
239 android::Mutex::Autolock lock(m_baseLayerLock);
240 if (m_paintingBaseLayer) {
241 m_globalButtonMutex->lock();
242 m_paintingBaseLayer->drawCanvas(canvas);
243 m_globalButtonMutex->unlock();
245 return m_currentPictureCounter;
248 TiledPage* GLWebViewState::sibling(TiledPage* page)
250 return (page == m_tiledPageA) ? m_tiledPageB : m_tiledPageA;
253 TiledPage* GLWebViewState::frontPage()
255 android::Mutex::Autolock lock(m_tiledPageLock);
256 return m_usePageA ? m_tiledPageA : m_tiledPageB;
259 TiledPage* GLWebViewState::backPage()
261 android::Mutex::Autolock lock(m_tiledPageLock);
262 return m_usePageA ? m_tiledPageB : m_tiledPageA;
265 void GLWebViewState::swapPages()
267 android::Mutex::Autolock lock(m_tiledPageLock);
269 TiledPage* oldPage = m_usePageA ? m_tiledPageB : m_tiledPageA;
270 zoomManager()->swapPages();
271 oldPage->discardTextures();
274 int GLWebViewState::baseContentWidth()
276 return m_paintingBaseLayer ? m_paintingBaseLayer->content()->width() : 0;
278 int GLWebViewState::baseContentHeight()
280 return m_paintingBaseLayer ? m_paintingBaseLayer->content()->height() : 0;
283 void GLWebViewState::setViewport(SkRect& viewport, float scale)
285 if ((m_viewport == viewport) &&
286 (zoomManager()->futureScale() == scale))
289 m_goingDown = m_viewport.fTop - viewport.fTop <= 0;
290 m_goingLeft = m_viewport.fLeft - viewport.fLeft >= 0;
291 m_viewport = viewport;
293 XLOG("New VIEWPORT %.2f - %.2f %.2f - %.2f (w: %2.f h: %.2f scale: %.2f currentScale: %.2f futureScale: %.2f)",
294 m_viewport.fLeft, m_viewport.fTop, m_viewport.fRight, m_viewport.fBottom,
295 m_viewport.width(), m_viewport.height(), scale,
296 zoomManager()->currentScale(), zoomManager()->futureScale());
298 const float invTileContentWidth = scale / TilesManager::tileWidth();
299 const float invTileContentHeight = scale / TilesManager::tileHeight();
301 m_viewportTileBounds.set(
302 static_cast<int>(floorf(viewport.fLeft * invTileContentWidth)),
303 static_cast<int>(floorf(viewport.fTop * invTileContentHeight)),
304 static_cast<int>(ceilf(viewport.fRight * invTileContentWidth)),
305 static_cast<int>(ceilf(viewport.fBottom * invTileContentHeight)));
307 // allocate max possible number of tiles visible with this viewport
308 int viewMaxTileX = static_cast<int>(ceilf((viewport.width()-1) * invTileContentWidth)) + 1;
309 int viewMaxTileY = static_cast<int>(ceilf((viewport.height()-1) * invTileContentHeight)) + 1;
310 int maxTextureCount = (viewMaxTileX + TILE_PREFETCH_DISTANCE * 2) *
311 (viewMaxTileY + TILE_PREFETCH_DISTANCE * 2) * 2;
312 TilesManager::instance()->setMaxTextureCount(maxTextureCount);
313 m_tiledPageA->updateBaseTileSize();
314 m_tiledPageB->updateBaseTileSize();
318 void GLWebViewState::dumpMeasures()
320 for (int i = 0; i < m_timeCounter; i++) {
321 XLOGC("%d delay: %d ms", m_totalTimeCounter + i,
322 static_cast<int>(m_delayTimes[i]*1000));
325 m_totalTimeCounter += m_timeCounter;
328 #endif // MEASURES_PERF
330 void GLWebViewState::resetFrameworkInval()
332 m_frameworkInval.setX(0);
333 m_frameworkInval.setY(0);
334 m_frameworkInval.setWidth(0);
335 m_frameworkInval.setHeight(0);
338 void GLWebViewState::addDirtyArea(const IntRect& rect)
343 IntRect inflatedRect = rect;
344 inflatedRect.inflate(8);
345 if (m_frameworkLayersInval.isEmpty())
346 m_frameworkLayersInval = inflatedRect;
348 m_frameworkLayersInval.unite(inflatedRect);
351 void GLWebViewState::resetLayersDirtyArea()
353 m_frameworkLayersInval.setX(0);
354 m_frameworkLayersInval.setY(0);
355 m_frameworkLayersInval.setWidth(0);
356 m_frameworkLayersInval.setHeight(0);
359 double GLWebViewState::setupDrawing(IntRect& viewRect, SkRect& visibleRect,
360 IntRect& webViewRect, int titleBarHeight,
361 IntRect& screenClip, float scale)
363 int left = viewRect.x();
364 int top = viewRect.y();
365 int width = viewRect.width();
366 int height = viewRect.height();
368 if (TilesManager::instance()->invertedScreen()) {
369 float color = 1.0 - ((((float) m_backgroundColor.red() / 255.0) +
370 ((float) m_backgroundColor.green() / 255.0) +
371 ((float) m_backgroundColor.blue() / 255.0)) / 3.0);
372 glClearColor(color, color, color, 1);
374 glClearColor((float)m_backgroundColor.red() / 255.0,
375 (float)m_backgroundColor.green() / 255.0,
376 (float)m_backgroundColor.blue() / 255.0, 1);
378 glClear(GL_COLOR_BUFFER_BIT);
380 glViewport(left, top, width, height);
382 ShaderProgram* shader = TilesManager::instance()->shader();
383 if (shader->program() == -1) {
384 XLOG("Reinit shader");
387 shader->setViewRect(viewRect);
388 shader->setViewport(visibleRect);
389 shader->setWebViewRect(webViewRect);
390 shader->setTitleBarHeight(titleBarHeight);
391 shader->setScreenClip(screenClip);
392 shader->resetBlending();
394 double currentTime = WTF::currentTime();
396 setViewport(visibleRect, scale);
397 m_zoomManager.processNewScale(currentTime, scale);
402 bool GLWebViewState::drawGL(IntRect& rect, SkRect& viewport, IntRect* invalRect,
403 IntRect& webViewRect, int titleBarHeight,
404 IntRect& clip, float scale, bool* buffersSwappedPtr)
407 TilesManager::instance()->getProfiler()->nextFrame(viewport.fLeft,
412 TilesManager::instance()->incDrawGLCount();
415 TilesManager::instance()->getTilesTracker()->clear();
418 m_baseLayerLock.lock();
419 BaseLayerAndroid* baseLayer = m_paintingBaseLayer;
420 SkSafeRef(baseLayer);
421 m_baseLayerLock.unlock();
425 float viewWidth = (viewport.fRight - viewport.fLeft) * TILE_PREFETCH_RATIO;
426 float viewHeight = (viewport.fBottom - viewport.fTop) * TILE_PREFETCH_RATIO;
427 bool useHorzPrefetch = viewWidth < baseContentWidth();
428 bool useVertPrefetch = viewHeight < baseContentHeight();
429 m_expandedTileBoundsX = (useHorzPrefetch) ? TILE_PREFETCH_DISTANCE : 0;
430 m_expandedTileBoundsY = (useVertPrefetch) ? TILE_PREFETCH_DISTANCE : 0;
432 XLOG("drawGL, rect(%d, %d, %d, %d), viewport(%.2f, %.2f, %.2f, %.2f)",
433 rect.x(), rect.y(), rect.width(), rect.height(),
434 viewport.fLeft, viewport.fTop, viewport.fRight, viewport.fBottom);
436 resetLayersDirtyArea();
438 LayerAndroid* compositedRoot = m_currentBaseLayerRoot;
439 LayerAndroid* paintingBaseLayerRoot = 0;
440 if (baseLayer && baseLayer->countChildren() >= 1)
441 paintingBaseLayerRoot = static_cast<LayerAndroid*>(baseLayer->getChild(0));
443 // when adding or removing layers, use the the paintingBaseLayer's tree so
444 // that content that moves to the base layer from a layer is synchronized
445 bool paintingHasLayers = (paintingBaseLayerRoot == 0);
446 bool currentHasLayers = (m_currentBaseLayerRoot == 0);
447 if (paintingHasLayers != currentHasLayers)
448 compositedRoot = paintingBaseLayerRoot;
450 if (scale < MIN_SCALE_WARNING || scale > MAX_SCALE_WARNING)
451 XLOGC("WARNING, scale seems corrupted before update: %e", scale);
453 // Here before we draw, update the BaseTile which has updated content.
454 // Inside this function, just do GPU blits from the transfer queue into
455 // the BaseTiles' texture.
456 TilesManager::instance()->transferQueue()->updateDirtyBaseTiles();
458 // Upload any pending ImageTexture
459 // Return true if we still have some images to upload.
460 // TODO: upload as many textures as possible within a certain time limit
461 bool ret = ImagesManager::instance()->uploadTextures();
463 if (scale < MIN_SCALE_WARNING || scale > MAX_SCALE_WARNING) {
464 XLOGC("WARNING, scale seems corrupted after update: %e", scale);
468 // gather the textures we can use
469 TilesManager::instance()->gatherLayerTextures();
471 // set up zoom manager, shaders, etc.
472 m_backgroundColor = baseLayer->getBackgroundColor();
473 double currentTime = setupDrawing(rect, viewport, webViewRect, titleBarHeight, clip, scale);
474 ret |= baseLayer->drawGL(currentTime, compositedRoot, rect,
475 viewport, scale, buffersSwappedPtr);
476 m_glExtras.drawGL(webViewRect, viewport, titleBarHeight);
478 glBindBuffer(GL_ARRAY_BUFFER, 0);
480 ret |= TilesManager::instance()->invertedScreenSwitch();
483 // ret==true && empty inval region means we've inval'd everything,
484 // but don't have new content. Keep redrawing full view (0,0,0,0)
485 // until tile generation catches up and we swap pages.
486 bool fullScreenInval = m_frameworkInval.isEmpty();
488 if (TilesManager::instance()->invertedScreenSwitch()) {
489 fullScreenInval = true;
490 TilesManager::instance()->setInvertedScreenSwitch(false);
493 if (!fullScreenInval) {
494 FloatRect frameworkInval = TilesManager::instance()->shader()->rectInInvScreenCoord(
496 // Inflate the invalidate rect to avoid precision lost.
497 frameworkInval.inflate(1);
498 IntRect inval(frameworkInval.x(), frameworkInval.y(),
499 frameworkInval.width(), frameworkInval.height());
501 inval.unite(m_frameworkLayersInval);
503 invalRect->setX(inval.x());
504 invalRect->setY(inval.y());
505 invalRect->setWidth(inval.width());
506 invalRect->setHeight(inval.height());
508 XLOG("invalRect(%d, %d, %d, %d)", inval.x(),
509 inval.y(), inval.width(), inval.height());
511 if (!invalRect->intersects(rect)) {
512 // invalidate is occurring offscreen, do full inval to guarantee redraw
513 fullScreenInval = true;
517 if (fullScreenInval) {
520 invalRect->setWidth(0);
521 invalRect->setHeight(0);
524 resetFrameworkInval();
528 if (m_measurePerfs) {
529 m_delayTimes[m_timeCounter++] = delta;
530 if (m_timeCounter >= MAX_MEASURES_PERF)
535 SkSafeUnref(baseLayer);
537 TilesManager::instance()->getTilesTracker()->showTrackTextures();
538 ImagesManager::instance()->showImages();
543 } // namespace WebCore
545 #endif // USE(ACCELERATED_COMPOSITING)