| /* |
| * Copyright (C) 2018 Apple 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 INC. 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 INC. 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" |
| #include "HighPerformanceGPUManager.h" |
| |
| #if PLATFORM(MAC) |
| |
| #include "Logging.h" |
| #include <OpenGL/CGLTypes.h> |
| #include <OpenGL/OpenGL.h> |
| #include <WebCore/GraphicsContextGLOpenGLManager.h> |
| |
| namespace WebKit { |
| |
| // FIXME: This class is using OpenGL to control the muxing of GPUs. Ultimately |
| // we want to use Metal, but currently there isn't a way to "release" a |
| // discrete MTLDevice, such that the process muxes back to an integrated GPU. |
| |
| HighPerformanceGPUManager& HighPerformanceGPUManager::singleton() |
| { |
| static NeverDestroyed<HighPerformanceGPUManager> sharedManager; |
| return sharedManager; |
| } |
| |
| void HighPerformanceGPUManager::addProcessRequiringHighPerformance(WebProcessProxy* process) |
| { |
| if (!WebCore::hasLowAndHighPowerGPUs()) |
| return; |
| |
| if (m_processesRequiringHighPerformance.add(process)) { |
| LOG(WebGL, "HighPerformanceGPUManager::addProcessRequiringHighPerformance() - adding process %p", process); |
| updateState(); |
| return; |
| } |
| |
| LOG(WebGL, "HighPerformanceGPUManager::addProcessRequiringHighPerformance() - process %p was already requesting high performance", process); |
| } |
| |
| void HighPerformanceGPUManager::removeProcessRequiringHighPerformance(WebProcessProxy* process) |
| { |
| if (!WebCore::hasLowAndHighPowerGPUs()) |
| return; |
| |
| if (m_processesRequiringHighPerformance.remove(process)) { |
| LOG(WebGL, "HighPerformanceGPUManager::removeProcessRequiringHighPerformance() - removing process %p", process); |
| updateState(); |
| return; |
| } |
| |
| LOG(WebGL, "HighPerformanceGPUManager::removeProcessRequiringHighPerformance() - process %p was not requesting high performance", process); |
| } |
| |
| void HighPerformanceGPUManager::updateState() |
| { |
| if (m_processesRequiringHighPerformance.size()) { |
| if (!m_pixelFormatObj) { |
| LOG(WebGL, "HighPerformanceGPUManager - turning on high-performance GPU."); |
| |
| CGLPixelFormatAttribute attributes[] = { kCGLPFAAccelerated, kCGLPFAColorSize, static_cast<CGLPixelFormatAttribute>(32), static_cast<CGLPixelFormatAttribute>(0) }; |
| GLint numPixelFormats = 0; |
| CGLChoosePixelFormat(attributes, &m_pixelFormatObj, &numPixelFormats); |
| |
| LOG(WebGL, "HighPerformanceGPUManager - CGLPixelFormatObj is %p", m_pixelFormatObj); |
| } |
| } else if (m_pixelFormatObj) { |
| LOG(WebGL, "HighPerformanceGPUManager - turning off high-performance GPU."); |
| CGLReleasePixelFormat(m_pixelFormatObj); |
| m_pixelFormatObj = nullptr; |
| } |
| } |
| |
| } |
| #endif |
| |