/* * Copyright (C) 2011 Google Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "config.h" #if USE(ACCELERATED_COMPOSITING) #include "RateLimiter.h" #include "Extensions3DChromium.h" #include "GraphicsContext3D.h" #include "TraceEvent.h" namespace WebCore { PassRefPtr<RateLimiter> RateLimiter::create(GraphicsContext3D* context, RateLimiterClient *client) { return adoptRef(new RateLimiter(context, client)); } RateLimiter::RateLimiter(GraphicsContext3D* context, RateLimiterClient *client) : m_context(context) , m_timer(this, &RateLimiter::rateLimitContext) , m_client(client) { ASSERT(context); ASSERT(context->getExtensions()); m_contextSupportsRateLimitingExtension = context->getExtensions()->supports("GL_CHROMIUM_rate_limit_offscreen_context"); } RateLimiter::~RateLimiter() { } void RateLimiter::start() { if (m_contextSupportsRateLimitingExtension && !m_timer.isActive()) m_timer.startOneShot(0); } void RateLimiter::stop() { m_timer.stop(); } void RateLimiter::rateLimitContext(Timer<RateLimiter>*) { TRACE_EVENT("RateLimiter::rateLimitContext", this, 0); Extensions3DChromium* extensions = static_cast<Extensions3DChromium*>(m_context->getExtensions()); m_client->rateLimit(); extensions->rateLimitOffscreenContextCHROMIUM(); } } #endif // USE(ACCELERATED_COMPOSITING)