bool ThreadedCompositor::tryEnsureGLContext()
{
if (!glContext())
return false;
glContext()->makeContextCurrent();
glViewport(0, 0, m_viewportSize.width(), m_viewportSize.height());
return true;
}
void LayerTreeHostGtk::flushAndRenderLayers()
{
{
RefPtr<LayerTreeHostGtk> protect(this);
m_webPage->layoutIfNeeded();
if (!m_isValid)
return;
}
GLContext* context = glContext();
if (!context || !context->makeContextCurrent())
return;
m_lastFlushTime = currentTime();
if (!flushPendingLayerChanges())
return;
// Our model is very simple. We always composite and render the tree immediately after updating it.
compositeLayersToContext();
if (m_notifyAfterScheduledLayerFlush) {
// Let the drawing area know that we've done a flush of the layer changes.
static_cast<DrawingAreaImpl*>(m_webPage->drawingArea())->layerHostDidFlushLayers();
m_notifyAfterScheduledLayerFlush = false;
}
}
void ThreadedCompositor::renderLayerTree()
{
if (!m_scene)
return;
#if PLATFORM(GTK)
if (!m_scene->isActive())
return;
#endif
if (!tryEnsureGLContext())
return;
#if PLATFORM(WPE)
m_target->frameWillRender();
#endif
FloatRect clipRect(0, 0, m_viewportSize.width(), m_viewportSize.height());
TransformationMatrix viewportTransform;
FloatPoint scrollPostion = m_viewportController->visibleContentsRect().location();
viewportTransform.scale(m_viewportController->pageScaleFactor() * m_deviceScaleFactor);
viewportTransform.translate(-scrollPostion.x(), -scrollPostion.y());
if (!m_drawsBackground) {
glClearColor(0, 0, 0, 0);
glClear(GL_COLOR_BUFFER_BIT);
}
m_scene->paintToCurrentGLContext(viewportTransform, 1, clipRect, Color::transparent, !m_drawsBackground, scrollPostion);
glContext()->swapBuffers();
#if PLATFORM(WPE)
m_target->frameRendered();
#endif
}
bool ThreadedCompositor::ensureGLContext()
{
if (!glContext())
return false;
glContext()->makeContextCurrent();
// The window size may be out of sync with the page size at this point, and getting
// the viewport parameters incorrect, means that the content will be misplaced. Thus
// we set the viewport parameters directly from the window size.
IntSize contextSize = glContext()->defaultFrameBufferSize();
if (m_viewportSize != contextSize) {
glViewport(0, 0, contextSize.width(), contextSize.height());
m_viewportSize = contextSize;
}
return true;
}
void FrameRenderer::render( Camera& cam, Node& root ) const
{
/* Update world transforms.
*/
root.updateWorldTransform();
glContext().makeCurrent();
render( cam, root, *pimpl->viewport );
}
JSValue JSHTMLCanvasElement::getContext(ExecState* exec)
{
HTMLCanvasElement* canvas = static_cast<HTMLCanvasElement*>(impl());
const UString& contextId = exec->argument(0).toString(exec)->value(exec);
RefPtr<CanvasContextAttributes> attrs;
#if ENABLE(WEBGL)
if (contextId == "experimental-webgl" || contextId == "webkit-3d") {
attrs = WebGLContextAttributes::create();
WebGLContextAttributes* webGLAttrs = static_cast<WebGLContextAttributes*>(attrs.get());
if (exec->argumentCount() > 1 && exec->argument(1).isObject()) {
JSObject* jsAttrs = exec->argument(1).getObject();
Identifier alpha(exec, "alpha");
if (jsAttrs->hasProperty(exec, alpha))
webGLAttrs->setAlpha(jsAttrs->get(exec, alpha).toBoolean(exec));
Identifier depth(exec, "depth");
if (jsAttrs->hasProperty(exec, depth))
webGLAttrs->setDepth(jsAttrs->get(exec, depth).toBoolean(exec));
Identifier stencil(exec, "stencil");
if (jsAttrs->hasProperty(exec, stencil))
webGLAttrs->setStencil(jsAttrs->get(exec, stencil).toBoolean(exec));
Identifier antialias(exec, "antialias");
if (jsAttrs->hasProperty(exec, antialias))
webGLAttrs->setAntialias(jsAttrs->get(exec, antialias).toBoolean(exec));
Identifier premultipliedAlpha(exec, "premultipliedAlpha");
if (jsAttrs->hasProperty(exec, premultipliedAlpha))
webGLAttrs->setPremultipliedAlpha(jsAttrs->get(exec, premultipliedAlpha).toBoolean(exec));
Identifier preserveDrawingBuffer(exec, "preserveDrawingBuffer");
if (jsAttrs->hasProperty(exec, preserveDrawingBuffer))
webGLAttrs->setPreserveDrawingBuffer(jsAttrs->get(exec, preserveDrawingBuffer).toBoolean(exec));
}
}
#endif
CanvasRenderingContext* context = canvas->getContext(ustringToString(contextId), attrs.get());
if (!context)
return jsNull();
JSValue jsValue = toJS(exec, globalObject(), WTF::getPtr(context));
#if ENABLE(WEBGL)
if (context->is3d() && InspectorInstrumentation::hasFrontends()) {
ScriptObject glContext(exec, jsValue.getObject());
ScriptObject wrapped = InspectorInstrumentation::wrapWebGLRenderingContextForInstrumentation(canvas->document(), glContext);
if (!wrapped.hasNoValue())
return wrapped.jsValue();
}
#endif
return jsValue;
}
void LayerTreeHostGtk::initialize()
{
m_rootLayer = GraphicsLayer::create(graphicsLayerFactory(), this);
m_rootLayer->setDrawsContent(false);
m_rootLayer->setSize(m_webPage->size());
// The non-composited contents are a child of the root layer.
m_nonCompositedContentLayer = GraphicsLayer::create(graphicsLayerFactory(), this);
m_nonCompositedContentLayer->setDrawsContent(true);
m_nonCompositedContentLayer->setContentsOpaque(m_webPage->drawsBackground() && !m_webPage->drawsTransparentBackground());
m_nonCompositedContentLayer->setSize(m_webPage->size());
if (m_webPage->corePage()->settings()->acceleratedDrawingEnabled())
m_nonCompositedContentLayer->setAcceleratesDrawing(true);
#ifndef NDEBUG
m_rootLayer->setName("LayerTreeHost root layer");
m_nonCompositedContentLayer->setName("LayerTreeHost non-composited content");
#endif
m_rootLayer->addChild(m_nonCompositedContentLayer.get());
m_nonCompositedContentLayer->setNeedsDisplay();
m_layerTreeContext.windowHandle = m_webPage->nativeWindowHandle();
GLContext* context = glContext();
if (!context) {
m_isValid = false;
return;
}
// The creation of the TextureMapper needs an active OpenGL context.
context->makeContextCurrent();
m_textureMapper = TextureMapperGL::create();
static_cast<TextureMapperGL*>(m_textureMapper.get())->setEnableEdgeDistanceAntialiasing(true);
toTextureMapperLayer(m_rootLayer.get())->setTextureMapper(m_textureMapper.get());
if (m_webPage->hasPageOverlay()) {
PageOverlayList& pageOverlays = m_webPage->pageOverlays();
PageOverlayList::iterator end = pageOverlays.end();
for (PageOverlayList::iterator it = pageOverlays.begin(); it != end; ++it)
createPageOverlayLayer(it->get());
}
scheduleLayerFlush();
}
void LayerTreeHostGtk::compositeLayersToContext()
{
GLContext* context = glContext();
if (!context || !context->makeContextCurrent())
return;
// The window size may be out of sync with the page size at this point, and getting
// the viewport parameters incorrect, means that the content will be misplaced. Thus
// we set the viewport parameters directly from the window size.
IntSize contextSize = m_context->defaultFrameBufferSize();
glViewport(0, 0, contextSize.width(), contextSize.height());
m_textureMapper->beginPainting();
toTextureMapperLayer(m_rootLayer.get())->paint();
m_textureMapper->endPainting();
context->swapBuffers();
}
void ThreadedCompositor::renderLayerTree()
{
if (!m_scene)
return;
if (!ensureGLContext())
return;
FloatRect clipRect(0, 0, m_viewportSize.width(), m_viewportSize.height());
TransformationMatrix viewportTransform;
FloatPoint scrollPostion = viewportController()->visibleContentsRect().location();
viewportTransform.scale(viewportController()->pageScaleFactor() * m_deviceScaleFactor);
viewportTransform.translate(-scrollPostion.x(), -scrollPostion.y());
m_scene->paintToCurrentGLContext(viewportTransform, 1, clipRect, Color::white, false, scrollPostion);
glContext()->swapBuffers();
}
/*!
Factory function for scene graph backends of the distance-field glyph cache.
*/
QSGDistanceFieldGlyphCache *QSGContext::distanceFieldGlyphCache(const QRawFont &font)
{
Q_D(QSGContext);
if (!d->distanceFieldCacheManager)
d->distanceFieldCacheManager = new QSGDistanceFieldGlyphCacheManager;
QSGDistanceFieldGlyphCache *cache = d->distanceFieldCacheManager->cache(font);
if (!cache) {
QPlatformIntegration *platformIntegration = QGuiApplicationPrivate::platformIntegration();
if (platformIntegration != 0
&& platformIntegration->hasCapability(QPlatformIntegration::SharedGraphicsCache)) {
QFontEngine *fe = QRawFontPrivate::get(font)->fontEngine;
if (!fe->faceId().filename.isEmpty()) {
QByteArray keyName = fe->faceId().filename;
if (font.style() != QFont::StyleNormal)
keyName += QByteArray(" I");
if (font.weight() != QFont::Normal)
keyName += ' ' + QByteArray::number(font.weight());
keyName += QByteArray(" DF");
QPlatformSharedGraphicsCache *sharedGraphicsCache =
platformIntegration->createPlatformSharedGraphicsCache(keyName);
if (sharedGraphicsCache != 0) {
sharedGraphicsCache->ensureCacheInitialized(keyName,
QPlatformSharedGraphicsCache::OpenGLTexture,
QPlatformSharedGraphicsCache::Alpha8);
cache = new QSGSharedDistanceFieldGlyphCache(keyName,
sharedGraphicsCache,
d->distanceFieldCacheManager,
glContext(),
font);
}
}
}
if (!cache)
cache = new QSGDefaultDistanceFieldGlyphCache(d->distanceFieldCacheManager, glContext(), font);
d->distanceFieldCacheManager->insertCache(font, cache);
}
return cache;
}
void ThreadedCompositor::renderLayerTree()
{
if (!m_scene)
return;
if (!ensureGLContext())
return;
FloatRect clipRect(0, 0, m_viewportSize.width(), m_viewportSize.height());
TransformationMatrix viewportTransform;
FloatPoint scrollPostion = viewportController()->visibleContentsRect().location();
viewportTransform.scale(viewportController()->pageScaleFactor());
viewportTransform.translate(-scrollPostion.x(), -scrollPostion.y());
m_scene->paintToCurrentGLContext(viewportTransform, 1, clipRect, Color::white, false, scrollPostion);
#if PLATFORM(BCM_RPI)
auto bufferExport = m_surface->lockFrontBuffer();
m_compositingManager.commitBCMBuffer(bufferExport);
#endif
#if PLATFORM(BCM_NEXUS)
auto bufferExport = m_surface->lockFrontBuffer();
m_compositingManager.commitBCMNexusBuffer(bufferExport);
#endif
#if PLATFORM(INTEL_CE)
auto bufferExport = m_surface->lockFrontBuffer();
m_compositingManager.commitIntelCEBuffer(bufferExport);
#endif
glContext()->swapBuffers();
#if PLATFORM(GBM)
auto bufferExport = m_surface->lockFrontBuffer();
m_compositingManager.commitPrimeBuffer(bufferExport);
#endif
}
void LayerTreeHostGtk::initialize()
{
m_rootLayer = GraphicsLayer::create(graphicsLayerFactory(), *this);
m_rootLayer->setDrawsContent(false);
m_rootLayer->setSize(m_webPage->size());
// The non-composited contents are a child of the root layer.
m_nonCompositedContentLayer = GraphicsLayer::create(graphicsLayerFactory(), *this);
m_nonCompositedContentLayer->setDrawsContent(true);
m_nonCompositedContentLayer->setContentsOpaque(m_webPage->drawsBackground() && !m_webPage->drawsTransparentBackground());
m_nonCompositedContentLayer->setSize(m_webPage->size());
if (m_webPage->corePage()->settings().acceleratedDrawingEnabled())
m_nonCompositedContentLayer->setAcceleratesDrawing(true);
#ifndef NDEBUG
m_rootLayer->setName("LayerTreeHost root layer");
m_nonCompositedContentLayer->setName("LayerTreeHost non-composited content");
#endif
m_rootLayer->addChild(m_nonCompositedContentLayer.get());
m_nonCompositedContentLayer->setNeedsDisplay();
m_layerTreeContext.contextID = m_webPage->nativeWindowHandle();
GLContext* context = glContext();
if (!context)
return;
// The creation of the TextureMapper needs an active OpenGL context.
context->makeContextCurrent();
m_textureMapper = TextureMapper::create(TextureMapper::OpenGLMode);
static_cast<TextureMapperGL*>(m_textureMapper.get())->setEnableEdgeDistanceAntialiasing(true);
toTextureMapperLayer(m_rootLayer.get())->setTextureMapper(m_textureMapper.get());
// FIXME: Cretae page olverlay layers. https://bugs.webkit.org/show_bug.cgi?id=131433.
scheduleLayerFlush();
}
void V8HTMLCanvasElement::getContextMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
{
v8::Handle<v8::Object> holder = info.Holder();
v8::Isolate* isolate = info.GetIsolate();
HTMLCanvasElement* impl = V8HTMLCanvasElement::toNative(holder);
TOSTRING_VOID(V8StringResource<>, contextIdResource, info[0]);
String contextId = contextIdResource;
RefPtr<CanvasContextAttributes> attributes;
if (contextId == "webgl" || contextId == "experimental-webgl") {
RefPtr<WebGLContextAttributes> webGLAttributes = WebGLContextAttributes::create();
if (info.Length() > 1 && info[1]->IsObject()) {
v8::Handle<v8::Object> jsAttributes = info[1]->ToObject();
v8::Handle<v8::String> alpha = v8AtomicString(isolate, "alpha");
if (jsAttributes->Has(alpha) && !isUndefinedOrNull(jsAttributes->Get(alpha)))
webGLAttributes->setAlpha(jsAttributes->Get(alpha)->BooleanValue());
v8::Handle<v8::String> depth = v8AtomicString(isolate, "depth");
if (jsAttributes->Has(depth) && !isUndefinedOrNull(jsAttributes->Get(depth)))
webGLAttributes->setDepth(jsAttributes->Get(depth)->BooleanValue());
v8::Handle<v8::String> stencil = v8AtomicString(isolate, "stencil");
if (jsAttributes->Has(stencil) && !isUndefinedOrNull(jsAttributes->Get(stencil)))
webGLAttributes->setStencil(jsAttributes->Get(stencil)->BooleanValue());
v8::Handle<v8::String> antialias = v8AtomicString(isolate, "antialias");
if (jsAttributes->Has(antialias) && !isUndefinedOrNull(jsAttributes->Get(antialias)))
webGLAttributes->setAntialias(jsAttributes->Get(antialias)->BooleanValue());
v8::Handle<v8::String> premultipliedAlpha = v8AtomicString(isolate, "premultipliedAlpha");
if (jsAttributes->Has(premultipliedAlpha) && !isUndefinedOrNull(jsAttributes->Get(premultipliedAlpha)))
webGLAttributes->setPremultipliedAlpha(jsAttributes->Get(premultipliedAlpha)->BooleanValue());
v8::Handle<v8::String> preserveDrawingBuffer = v8AtomicString(isolate, "preserveDrawingBuffer");
if (jsAttributes->Has(preserveDrawingBuffer) && !isUndefinedOrNull(jsAttributes->Get(preserveDrawingBuffer)))
webGLAttributes->setPreserveDrawingBuffer(jsAttributes->Get(preserveDrawingBuffer)->BooleanValue());
v8::Handle<v8::String> failIfMajorPerformanceCaveat = v8AtomicString(isolate, "failIfMajorPerformanceCaveat");
if (jsAttributes->Has(failIfMajorPerformanceCaveat) && !isUndefinedOrNull(jsAttributes->Get(failIfMajorPerformanceCaveat)))
webGLAttributes->setFailIfMajorPerformanceCaveat(jsAttributes->Get(failIfMajorPerformanceCaveat)->BooleanValue());
}
attributes = webGLAttributes;
} else {
RefPtr<Canvas2DContextAttributes> canvas2DAttributes = Canvas2DContextAttributes::create();
if (info.Length() > 1 && info[1]->IsObject()) {
v8::Handle<v8::Object> jsAttributes = info[1]->ToObject();
v8::Handle<v8::String> alpha = v8AtomicString(isolate, "alpha");
if (jsAttributes->Has(alpha) && !isUndefinedOrNull(jsAttributes->Get(alpha)))
canvas2DAttributes->setAlpha(jsAttributes->Get(alpha)->BooleanValue());
}
attributes = canvas2DAttributes;
}
CanvasRenderingContext* result = impl->getContext(contextId, attributes.get());
if (!result) {
v8SetReturnValueNull(info);
return;
}
if (result->is2d()) {
v8::Handle<v8::Value> v8Result = toV8(toCanvasRenderingContext2D(result), info.Holder(), info.GetIsolate());
if (InspectorInstrumentation::canvasAgentEnabled(&impl->document())) {
ScriptState* scriptState = ScriptState::current(isolate);
ScriptValue context(scriptState, v8Result);
ScriptValue wrapped = InspectorInstrumentation::wrapCanvas2DRenderingContextForInstrumentation(&impl->document(), context);
if (!wrapped.isEmpty()) {
v8SetReturnValue(info, wrapped.v8Value());
return;
}
}
v8SetReturnValue(info, v8Result);
return;
}
if (result->is3d()) {
v8::Handle<v8::Value> v8Result = toV8(toWebGLRenderingContext(result), info.Holder(), info.GetIsolate());
if (InspectorInstrumentation::canvasAgentEnabled(&impl->document())) {
ScriptState* scriptState = ScriptState::current(isolate);
ScriptValue glContext(scriptState, v8Result);
ScriptValue wrapped = InspectorInstrumentation::wrapWebGLRenderingContextForInstrumentation(&impl->document(), glContext);
if (!wrapped.isEmpty()) {
v8SetReturnValue(info, wrapped.v8Value());
return;
}
}
v8SetReturnValue(info, v8Result);
return;
}
ASSERT_NOT_REACHED();
v8SetReturnValueNull(info);
}
v8::Handle<v8::Value> V8HTMLCanvasElement::getContextCallback(const v8::Arguments& args)
{
INC_STATS("DOM.HTMLCanvasElement.context");
v8::Handle<v8::Object> holder = args.Holder();
HTMLCanvasElement* imp = V8HTMLCanvasElement::toNative(holder);
String contextId = toWebCoreString(args[0]);
RefPtr<CanvasContextAttributes> attrs;
#if ENABLE(WEBGL)
if (contextId == "experimental-webgl" || contextId == "webkit-3d") {
attrs = WebGLContextAttributes::create();
WebGLContextAttributes* webGLAttrs = static_cast<WebGLContextAttributes*>(attrs.get());
if (args.Length() > 1 && args[1]->IsObject()) {
v8::Handle<v8::Object> jsAttrs = args[1]->ToObject();
v8::Handle<v8::String> alpha = v8::String::New("alpha");
if (jsAttrs->Has(alpha))
webGLAttrs->setAlpha(jsAttrs->Get(alpha)->BooleanValue());
v8::Handle<v8::String> depth = v8::String::New("depth");
if (jsAttrs->Has(depth))
webGLAttrs->setDepth(jsAttrs->Get(depth)->BooleanValue());
v8::Handle<v8::String> stencil = v8::String::New("stencil");
if (jsAttrs->Has(stencil))
webGLAttrs->setStencil(jsAttrs->Get(stencil)->BooleanValue());
v8::Handle<v8::String> antialias = v8::String::New("antialias");
if (jsAttrs->Has(antialias))
webGLAttrs->setAntialias(jsAttrs->Get(antialias)->BooleanValue());
v8::Handle<v8::String> premultipliedAlpha = v8::String::New("premultipliedAlpha");
if (jsAttrs->Has(premultipliedAlpha))
webGLAttrs->setPremultipliedAlpha(jsAttrs->Get(premultipliedAlpha)->BooleanValue());
v8::Handle<v8::String> preserveDrawingBuffer = v8::String::New("preserveDrawingBuffer");
if (jsAttrs->Has(preserveDrawingBuffer))
webGLAttrs->setPreserveDrawingBuffer(jsAttrs->Get(preserveDrawingBuffer)->BooleanValue());
}
}
#endif
CanvasRenderingContext* result = imp->getContext(contextId, attrs.get());
if (!result)
return v8::Null(args.GetIsolate());
else if (result->is2d()) {
v8::Handle<v8::Value> v8Result = toV8(static_cast<CanvasRenderingContext2D*>(result), args.Holder(), args.GetIsolate());
if (InspectorInstrumentation::canvasAgentEnabled(imp->document())) {
ScriptState* scriptState = ScriptState::forContext(v8::Context::GetCurrent());
ScriptObject context(scriptState, v8::Handle<v8::Object>::Cast(v8Result));
ScriptObject wrapped = InspectorInstrumentation::wrapCanvas2DRenderingContextForInstrumentation(imp->document(), context);
if (!wrapped.hasNoValue())
return wrapped.v8Value();
}
return v8Result;
}
#if ENABLE(WEBGL)
else if (result->is3d()) {
// 3D canvas contexts can hold on to lots of GPU resources, and we want to take an
// opportunity to get rid of them as soon as possible when we navigate away from pages using
// them.
V8PerIsolateData* perIsolateData = V8PerIsolateData::from(args.GetIsolate());
perIsolateData->setShouldCollectGarbageSoon();
v8::Handle<v8::Value> v8Result = toV8(static_cast<WebGLRenderingContext*>(result), args.Holder(), args.GetIsolate());
if (InspectorInstrumentation::canvasAgentEnabled(imp->document())) {
ScriptState* scriptState = ScriptState::forContext(v8::Context::GetCurrent());
ScriptObject glContext(scriptState, v8::Handle<v8::Object>::Cast(v8Result));
ScriptObject wrapped = InspectorInstrumentation::wrapWebGLRenderingContextForInstrumentation(imp->document(), glContext);
if (!wrapped.hasNoValue())
return wrapped.v8Value();
}
return v8Result;
}
#endif
ASSERT_NOT_REACHED();
return v8::Null(args.GetIsolate());
}
static already_AddRefed<GLContextGLX>
CreateGLContext(const ContextFormat& format,
Display *display,
GLXDrawable drawable,
GLXFBConfig cfg,
XVisualInfo *vinfo,
GLContextGLX *shareContext,
PRBool deleteDrawable,
gfxXlibSurface *pixmap = nsnull)
{
int db = 0, err;
err = sGLXLibrary.xGetFBConfigAttrib(display, cfg,
GLX_DOUBLEBUFFER, &db);
if (GLX_BAD_ATTRIBUTE != err) {
#ifdef DEBUG
printf("[GLX] FBConfig is %sdouble-buffered\n", db ? "" : "not ");
#endif
}
ctxErrorOccurred = false;
int (*oldHandler)(Display *, XErrorEvent *);
GLXContext context;
TRY_AGAIN_NO_SHARING:
oldHandler = XSetErrorHandler(&ctxErrorHandler);
if (gGLXVersion >= 0x0103) {
context = sGLXLibrary.xCreateNewContext(display,
cfg,
GLX_RGBA_TYPE,
shareContext ? shareContext->mContext : NULL,
True);
} else {
context = sGLXLibrary.xCreateContext(display,
vinfo,
shareContext ? shareContext->mContext : NULL,
True);
}
XSync(display, False);
XSetErrorHandler(oldHandler);
if (!context || ctxErrorOccurred) {
if (shareContext) {
shareContext = nsnull;
goto TRY_AGAIN_NO_SHARING;
}
NS_WARNING("Failed to create GLXContext!");
return nsnull;
}
nsRefPtr<GLContextGLX> glContext(new GLContextGLX(format,
shareContext,
display,
drawable,
context,
deleteDrawable,
db,
pixmap));
if (!glContext->Init()) {
return nsnull;
}
return glContext.forget();
}
