Attachment 349147 Details for Bug 189361 – Patch

[patch] Patch

bug-189361-20180907084939.patch (text/plain), 54.24 KB, created by Per Arne Vollan on 2018-09-07 08:49:40 PDT

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Creator: Per Arne Vollan

Created: 2018-09-07 08:49:40 PDT

Size: 54.24 KB

patch

obsolete

>Index: Source/WebCore/ChangeLog
>===================================================================
>--- Source/WebCore/ChangeLog	(revision 235781)
>+++ Source/WebCore/ChangeLog	(working copy)
>@@ -1,3 +1,40 @@
>+2018-09-06  Per Arne Vollan  <pvollan@apple.com>
>+
>+        [macOS] Switching to discrete GPU should be done in the UI process
>+        https://bugs.webkit.org/show_bug.cgi?id=189361
>+        <rdar://problem/43949622>
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        When WebGL is requesting to use the discrete GPU on a muxable system by setting the powerPreference
>+        attribute to "high-performance", a call to CGLChoosePixelFormat is made to perform the switch. This
>+        method of switching does not work when there is no WindowServer access in the WebContent process.
>+        This call needs to be made in the UI process. This patch adds two new support classes (GPUClient
>+        and WebGPUClient) to broker these calls to the UI process. WebKit legacy support is maintained by
>+        implementing the WebGPUClient class on the legacy side. The new code is protected by using the
>+        ENABLE(WEBPROCESS_WINDOWSERVER_BLOCKING) define.
>+
>+        Test: fast/canvas/webgl/switch-to-discrete-gpu.html
>+
>+        * WebCore.xcodeproj/project.pbxproj:
>+        * platform/graphics/GraphicsContext3DManager.cpp:
>+        (WebCore::GraphicsContext3DManager::enableHighPerformanceGPU):
>+        (WebCore::GraphicsContext3DManager::disableHighPerformanceGPU):
>+        (WebCore::GraphicsContext3DManager::updateHighPerformanceState):
>+        (WebCore::GraphicsContext3DManager::highPerformanceGPUEnabled const):
>+        (WebCore::GraphicsContext3DManager::disableHighPerformanceGPUTimerFired):
>+        * platform/graphics/GraphicsContext3DManager.h:
>+        * platform/graphics/mac/GPUClient.cpp: Added.
>+        (WebCore::GPUClient::singleton):
>+        (WebCore::GPUClient::setSingleton):
>+        * platform/graphics/mac/GPUClient.h: Added.
>+        (WebCore::GPUClient::~GPUClient):
>+        * testing/Internals.cpp:
>+        (WebCore::Internals::hasMuxableGPU):
>+        * testing/Internals.h:
>+        * testing/Internals.idl:
>+        * testing/Internals.mm:
>+
> 2018-09-06  Ryosuke Niwa  <rniwa@webkit.org>
> 
>         ShadowRoot should have its own node flag
>Index: Source/WebCore/WebCore.xcodeproj/project.pbxproj
>===================================================================
>--- Source/WebCore/WebCore.xcodeproj/project.pbxproj	(revision 235781)
>+++ Source/WebCore/WebCore.xcodeproj/project.pbxproj	(working copy)
>@@ -3897,6 +3897,8 @@
> 		C0C054CD1118C8E400CE2636 /* IDLParser.pm in Headers */ = {isa = PBXBuildFile; fileRef = 14813BF309EDF88E00F757E1 /* IDLParser.pm */; settings = {ATTRIBUTES = (Private, ); }; };
> 		C0F2A44113869AAB0066C534 /* preprocessor.pm in Headers */ = {isa = PBXBuildFile; fileRef = C0F2A43F13869A280066C534 /* preprocessor.pm */; settings = {ATTRIBUTES = (Private, ); }; };
> 		C105DA640F3AA6B8001DD44F /* TextEncodingDetector.h in Headers */ = {isa = PBXBuildFile; fileRef = C105DA630F3AA6B8001DD44F /* TextEncodingDetector.h */; };
>+		C11A9ECE21403A5C00CFB20A /* GPUClient.h in Headers */ = {isa = PBXBuildFile; fileRef = C11A9ECD21403A5C00CFB20A /* GPUClient.h */; settings = {ATTRIBUTES = (Private, ); }; };
>+		C11A9ED32140578B00CFB20A /* GPUClient.cpp in Sources */ = {isa = PBXBuildFile; fileRef = C11A9ED22140578B00CFB20A /* GPUClient.cpp */; };
> 		C1E1D236203DF15400584665 /* ScreenProperties.h in Headers */ = {isa = PBXBuildFile; fileRef = C1E1D235203DF15400584665 /* ScreenProperties.h */; settings = {ATTRIBUTES = (Private, ); }; };
> 		C2015C0A1BE6FEB200822389 /* FontVariantBuilder.h in Headers */ = {isa = PBXBuildFile; fileRef = C2015C091BE6FE2C00822389 /* FontVariantBuilder.h */; };
> 		C21DF2EA1D9E4E9900F5B24C /* CSSFontVariationValue.h in Headers */ = {isa = PBXBuildFile; fileRef = C21DF2E81D9E4E9900F5B24C /* CSSFontVariationValue.h */; };
>@@ -13040,6 +13042,8 @@
> 		C0F2A43F13869A280066C534 /* preprocessor.pm */ = {isa = PBXFileReference; lastKnownFileType = text.script.perl; name = preprocessor.pm; path = scripts/preprocessor.pm; sourceTree = "<group>"; };
> 		C105DA610F3AA68F001DD44F /* TextEncodingDetectorICU.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = TextEncodingDetectorICU.cpp; sourceTree = "<group>"; };
> 		C105DA630F3AA6B8001DD44F /* TextEncodingDetector.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = TextEncodingDetector.h; sourceTree = "<group>"; };
>+		C11A9ECD21403A5C00CFB20A /* GPUClient.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = GPUClient.h; sourceTree = "<group>"; };
>+		C11A9ED22140578B00CFB20A /* GPUClient.cpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; path = GPUClient.cpp; sourceTree = "<group>"; };
> 		C1E1D235203DF15400584665 /* ScreenProperties.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = ScreenProperties.h; sourceTree = "<group>"; };
> 		C2015C091BE6FE2C00822389 /* FontVariantBuilder.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = FontVariantBuilder.h; sourceTree = "<group>"; };
> 		C21DF2E71D9E4E9900F5B24C /* CSSFontVariationValue.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = CSSFontVariationValue.cpp; sourceTree = "<group>"; };
>@@ -23539,6 +23543,8 @@
> 				B2AFFC750D00A5C10030074D /* FontCustomPlatformData.cpp */,
> 				B2AFFC760D00A5C10030074D /* FontCustomPlatformData.h */,
> 				B2AFFC7B0D00A5C10030074D /* GlyphPageMac.cpp */,
>+				C11A9ED22140578B00CFB20A /* GPUClient.cpp */,
>+				C11A9ECD21403A5C00CFB20A /* GPUClient.h */,
> 				B275358D0B053A66002CE64F /* IconMac.mm */,
> 				B275354E0B053814002CE64F /* ImageMac.mm */,
> 				B275354F0B053814002CE64F /* IntPointMac.mm */,
>@@ -28060,6 +28066,7 @@
> 				0873B86B136064EA00A522C2 /* GlyphPage.h in Headers */,
> 				311518FC1E78C15F00EC514A /* GPUBasedCanvasRenderingContext.h in Headers */,
> 				316BDBAA1E71FA9300DE0D5A /* GPUBuffer.h in Headers */,
>+				C11A9ECE21403A5C00CFB20A /* GPUClient.h in Headers */,
> 				316BDBCE1E75F18A00DE0D5A /* GPUCommandBuffer.h in Headers */,
> 				316BDBBC1E73880600DE0D5A /* GPUCommandQueue.h in Headers */,
> 				93A953B420EBD43200A619F6 /* GPUComputeCommandEncoder.h in Headers */,
>@@ -28781,7 +28788,6 @@
> 				D6489D26166FFCF1007C031B /* JSHTMLTemplateElement.h in Headers */,
> 				A80E7E9D0A1A83E3007FB8C5 /* JSHTMLTextAreaElement.h in Headers */,
> 				83E359A21BB1031D002CEB98 /* JSHTMLTimeElement.h in Headers */,
>-				E42050172141901B0066EF3B /* ProcessWarming.h in Headers */,
> 				A80E7B0C0A19D606007FB8C5 /* JSHTMLTitleElement.h in Headers */,
> 				070756D414239A4F00414161 /* JSHTMLTrackElement.h in Headers */,
> 				1A85B2110A1B258700D8C87C /* JSHTMLUListElement.h in Headers */,
>@@ -29789,6 +29795,7 @@
> 				B71FE6DF11091CB300DAEF77 /* PrintContext.h in Headers */,
> 				51F645D51FECDBCE00B54DED /* Process.h in Headers */,
> 				A8EA7EBC0A1945D000A8EF5F /* ProcessingInstruction.h in Headers */,
>+				E42050172141901B0066EF3B /* ProcessWarming.h in Headers */,
> 				E44613EC0CD681B500FADA75 /* ProgressEvent.h in Headers */,
> 				A715E653134BBBEC00D8E713 /* ProgressShadowElement.h in Headers */,
> 				1A2A68240B5BEDE70002A480 /* ProgressTracker.h in Headers */,
>@@ -31498,6 +31505,7 @@
> 				51A9D9E9195B931F001B2B5C /* GamepadManager.cpp in Sources */,
> 				515BE1911D54F5FB00DD7C68 /* GamepadProvider.cpp in Sources */,
> 				837964CF1F8DB69D00218EA0 /* GeolocationPositionIOS.mm in Sources */,
>+				C11A9ED32140578B00CFB20A /* GPUClient.cpp in Sources */,
> 				6E21C6C01126338500A7BE02 /* GraphicsContext3D.cpp in Sources */,
> 				D0843A4D20FEC16500FE860E /* GraphicsContext3DManager.cpp in Sources */,
> 				7C3E510B18DF8F3500C112F7 /* HTMLConverter.mm in Sources */,
>Index: Source/WebCore/platform/graphics/GraphicsContext3DManager.cpp
>===================================================================
>--- Source/WebCore/platform/graphics/GraphicsContext3DManager.cpp	(revision 235781)
>+++ Source/WebCore/platform/graphics/GraphicsContext3DManager.cpp	(working copy)
>@@ -36,6 +36,7 @@
> #endif
> 
> #if PLATFORM(MAC)
>+#include "GPUClient.h"
> #include <OpenGL/OpenGL.h>
> #endif
> 
>@@ -128,6 +129,29 @@ void GraphicsContext3DManager::displayWa
>     if (flags & kCGDisplaySetModeFlag)
>         GraphicsContext3DManager::sharedManager().updateAllContexts();
> }
>+
>+CGLPixelFormatObj GraphicsContext3DManager::enableHighPerformanceGPU()
>+{
>+    CGLPixelFormatObj pixelFormatObj = nullptr;
>+    
>+    LOG(WebGL, "Turning on high-performance GPU.");
>+    
>+    CGLPixelFormatAttribute attributes[] = { kCGLPFAAccelerated, kCGLPFAColorSize, static_cast<CGLPixelFormatAttribute>(32), static_cast<CGLPixelFormatAttribute>(0) };
>+    GLint numPixelFormats = 0;
>+    auto ret = CGLChoosePixelFormat(attributes, &pixelFormatObj, &numPixelFormats);
>+    ASSERT_UNUSED(ret, ret == kCGLNoError);
>+    
>+    return pixelFormatObj;
>+}
>+
>+void GraphicsContext3DManager::disableHighPerformanceGPU(CGLPixelFormatObj& pixelFormatObj)
>+{
>+    if (pixelFormatObj) {
>+        LOG(WebGL, "Turning off high-performance GPU.");
>+        CGLReleasePixelFormat(pixelFormatObj);
>+        pixelFormatObj = nullptr;
>+    }
>+}
> #endif
> 
> void GraphicsContext3DManager::updateAllContexts()
>@@ -226,15 +250,17 @@ void GraphicsContext3DManager::updateHig
>             m_disableHighPerformanceGPUTimer.stop();
>         }
>         
>-        if (!m_pixelFormatObj) {
>-            LOG(WebGL, "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);
>+#if ENABLE(WEBPROCESS_WINDOWSERVER_BLOCKING)
>+        if (!m_highPerformanceGPUEnabled) {
>+            GPUClient::singleton().enableHighPerformanceGPU();
>+            m_highPerformanceGPUEnabled = true;
>         }
>+#else
>+        if (!m_pixelFormatObj)
>+            m_pixelFormatObj = enableHighPerformanceGPU();
>+#endif
> 
>-    } else if (m_pixelFormatObj) {
>+    } else if (highPerformanceGPUEnabled()) {
>         // Don't immediately turn off the high-performance GPU. The user might be
>         // swapping back and forth between tabs or windows, and we don't want to cause
>         // churn if we can avoid it.
>@@ -249,14 +275,28 @@ void GraphicsContext3DManager::updateHig
> #endif
> }
> 
>+#if PLATFORM(MAC)
>+bool GraphicsContext3DManager::highPerformanceGPUEnabled() const
>+{
>+#if ENABLE(WEBPROCESS_WINDOWSERVER_BLOCKING)
>+    return m_highPerformanceGPUEnabled;
>+#else
>+    return m_pixelFormatObj;
>+#endif
>+}
>+#endif
>+
> void GraphicsContext3DManager::disableHighPerformanceGPUTimerFired()
> {
>+    if (m_contextsRequiringHighPerformance.size())
>+        return;
> #if PLATFORM(MAC)
>-    if (!m_contextsRequiringHighPerformance.size() && m_pixelFormatObj) {
>-        LOG(WebGL, "Turning off high-performance GPU.");
>-        CGLReleasePixelFormat(m_pixelFormatObj);
>-        m_pixelFormatObj = nullptr;
>-    }
>+#if ENABLE(WEBPROCESS_WINDOWSERVER_BLOCKING)
>+    GPUClient::singleton().disableHighPerformanceGPU();
>+    m_highPerformanceGPUEnabled = false;
>+#else
>+    disableHighPerformanceGPU(m_pixelFormatObj);
>+#endif
> #endif
> }
> 
>Index: Source/WebCore/platform/graphics/GraphicsContext3DManager.h
>===================================================================
>--- Source/WebCore/platform/graphics/GraphicsContext3DManager.h	(revision 235781)
>+++ Source/WebCore/platform/graphics/GraphicsContext3DManager.h	(working copy)
>@@ -44,7 +44,7 @@ class HostWindow;
> using PlatformDisplayID = uint32_t;
> 
> #if HAVE(APPLE_GRAPHICS_CONTROL)
>-bool hasMuxableGPU();
>+WEBCORE_EXPORT bool hasMuxableGPU();
> #endif
> 
> class GraphicsContext3DManager {
>@@ -67,6 +67,8 @@ public:
> #if PLATFORM(MAC)
>     void screenDidChange(PlatformDisplayID, const HostWindow*);
>     WEBCORE_EXPORT static void displayWasReconfigured(CGDirectDisplayID, CGDisplayChangeSummaryFlags, void*);
>+    WEBCORE_EXPORT static CGLPixelFormatObj enableHighPerformanceGPU();
>+    WEBCORE_EXPORT static void disableHighPerformanceGPU(CGLPixelFormatObj&);
> #endif
>     
> private:
>@@ -87,8 +89,13 @@ private:
>     Timer m_disableHighPerformanceGPUTimer;
>     
> #if PLATFORM(MAC)
>+    bool highPerformanceGPUEnabled() const;
>+#if ENABLE(WEBPROCESS_WINDOWSERVER_BLOCKING)
>+    bool m_highPerformanceGPUEnabled { false };
>+#else
>     CGLPixelFormatObj m_pixelFormatObj { nullptr };
> #endif
>+#endif
> };
> 
> }
>Index: Source/WebCore/platform/graphics/mac/GPUClient.cpp
>===================================================================
>--- Source/WebCore/platform/graphics/mac/GPUClient.cpp	(nonexistent)
>+++ Source/WebCore/platform/graphics/mac/GPUClient.cpp	(working copy)
>@@ -0,0 +1,44 @@
>+/*
>+ * 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 "GPUClient.h"
>+
>+namespace WebCore {
>+
>+GPUClient* GPUClient::m_singleton = nullptr;
>+
>+GPUClient& GPUClient::singleton()
>+{
>+    return *m_singleton;
>+}
>+
>+void GPUClient::setSingleton(GPUClient& singleton)
>+{
>+    m_singleton = &singleton;
>+}
>+
>+}
>+
>Index: Source/WebCore/platform/graphics/mac/GPUClient.h
>===================================================================
>--- Source/WebCore/platform/graphics/mac/GPUClient.h	(nonexistent)
>+++ Source/WebCore/platform/graphics/mac/GPUClient.h	(working copy)
>@@ -0,0 +1,44 @@
>+/*
>+ * 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.
>+ */
>+
>+#pragma once
>+
>+namespace WebCore {
>+
>+class GPUClient {
>+public:
>+    static GPUClient& singleton();
>+    WEBCORE_EXPORT static void setSingleton(GPUClient&);
>+    
>+    virtual ~GPUClient() { }
>+
>+    virtual void enableHighPerformanceGPU() = 0;
>+    virtual void disableHighPerformanceGPU() = 0;
>+    
>+private:
>+    static GPUClient* m_singleton;
>+};
>+
>+}
>Index: Source/WebCore/testing/Internals.cpp
>===================================================================
>--- Source/WebCore/testing/Internals.cpp	(revision 235781)
>+++ Source/WebCore/testing/Internals.cpp	(working copy)
>@@ -271,6 +271,10 @@
> #include "MockCredentialsMessenger.h"
> #endif
> 
>+#if PLATFORM(MAC)
>+#include "GraphicsContext3DManager.h"
>+#endif
>+
> using JSC::CallData;
> using JSC::CallType;
> using JSC::CodeBlock;
>@@ -4718,4 +4722,13 @@ unsigned long Internals::primaryScreenDi
> #endif
> }
> 
>+bool Internals::hasMuxableGPU()
>+{
>+#if PLATFORM(MAC)
>+    return WebCore::hasMuxableGPU();
>+#else
>+    return false;
>+#endif
>+}
>+
> } // namespace WebCore
>Index: Source/WebCore/testing/Internals.h
>===================================================================
>--- Source/WebCore/testing/Internals.h	(revision 235781)
>+++ Source/WebCore/testing/Internals.h	(working copy)
>@@ -736,6 +736,8 @@ public:
> 
>     unsigned long primaryScreenDisplayID();
>         
>+    bool hasMuxableGPU();
>+        
> private:
>     explicit Internals(Document&);
>     Document* contextDocument() const;
>Index: Source/WebCore/testing/Internals.idl
>===================================================================
>--- Source/WebCore/testing/Internals.idl	(revision 235781)
>+++ Source/WebCore/testing/Internals.idl	(working copy)
>@@ -670,4 +670,6 @@ enum CompositingPolicy {
>     void notifyResourceLoadObserver();
> 
>     unsigned long primaryScreenDisplayID();
>+
>+    boolean hasMuxableGPU();
> };
>Index: Source/WebKit/ChangeLog
>===================================================================
>--- Source/WebKit/ChangeLog	(revision 235781)
>+++ Source/WebKit/ChangeLog	(working copy)
>@@ -1,3 +1,34 @@
>+2018-09-06  Per Arne Vollan  <pvollan@apple.com>
>+
>+        [macOS] Switching to discrete GPU should be done in the UI process
>+        https://bugs.webkit.org/show_bug.cgi?id=189361
>+        <rdar://problem/43949622>
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        When WebGL is requesting to use the discrete GPU on a muxable system by setting the powerPreference
>+        attribute to "high-performance", a call to CGLChoosePixelFormat is made to perform the switch. This
>+        method of switching does not work when there is no WindowServer access in the WebContent process.
>+        This call needs to be made in the UI process. This patch adds two new support classes (GPUClient
>+        and WebGPUClient) to broker these calls to the UI process. WebKit legacy support is maintained by
>+        implementing the WebGPUClient class on the legacy side. The new code is protected by using the
>+        ENABLE(WEBPROCESS_WINDOWSERVER_BLOCKING) define.
>+
>+        * UIProcess/Cocoa/WebProcessProxyCocoa.mm:
>+        (WebKit::WebProcessProxy::enableHighPerformanceGPU):
>+        (WebKit::WebProcessProxy::disableHighPerformanceGPU):
>+        * UIProcess/WebPageProxy.h:
>+        * UIProcess/WebProcessProxy.h:
>+        * UIProcess/WebProcessProxy.messages.in:
>+        * WebKit.xcodeproj/project.pbxproj:
>+        * WebProcess/WebCoreSupport/mac/WebGPUClient.cpp: Added.
>+        (WebKit::WebGPUClient::singleton):
>+        (WebKit::WebGPUClient::enableHighPerformanceGPU):
>+        (WebKit::WebGPUClient::disableHighPerformanceGPU):
>+        * WebProcess/WebCoreSupport/mac/WebGPUClient.h: Added.
>+        * WebProcess/cocoa/WebProcessCocoa.mm:
>+        (WebKit::WebProcess::platformInitializeProcess):
>+
> 2018-09-07  Brent Fulgham  <bfulgham@apple.com>
> 
>         [iOS] Move default mach-lookup deny to after common.sb is imported
>Index: Source/WebKit/UIProcess/WebPageProxy.h
>===================================================================
>--- Source/WebKit/UIProcess/WebPageProxy.h	(revision 235781)
>+++ Source/WebKit/UIProcess/WebPageProxy.h	(working copy)
>@@ -1823,6 +1823,9 @@ private:
> #if PLATFORM(MAC) && ENABLE(WEBPROCESS_WINDOWSERVER_BLOCKING)
>     void startDisplayLink(unsigned observerID);
>     void stopDisplayLink(unsigned observerID);
>+        
>+    void enableHighPerformanceGPU();
>+    void disableHighPerformanceGPU();
> #endif
> 
>     void reportPageLoadResult(const WebCore::ResourceError& = { });
>Index: Source/WebKit/UIProcess/WebProcessProxy.h
>===================================================================
>--- Source/WebKit/UIProcess/WebProcessProxy.h	(revision 235781)
>+++ Source/WebKit/UIProcess/WebProcessProxy.h	(working copy)
>@@ -50,6 +50,10 @@
> #include <wtf/RefCounted.h>
> #include <wtf/RefPtr.h>
> 
>+#if PLATFORM(MAC)
>+#include <WebCore/GraphicsContext3DManager.h>
>+#endif
>+
> namespace API {
> class Navigation;
> class PageConfiguration;
>@@ -226,6 +230,11 @@ public:
>     void cacheMediaMIMETypes(const Vector<String>&);
> #endif
> 
>+#if PLATFORM(MAC) && ENABLE(WEBPROCESS_WINDOWSERVER_BLOCKING)
>+    void enableHighPerformanceGPU();
>+    void disableHighPerformanceGPU();
>+#endif
>+
>     // Called when the web process has crashed or we know that it will terminate soon.
>     // Will potentially cause the WebProcessProxy object to be freed.
>     void shutDown();
>@@ -397,6 +406,10 @@ private:
> #if PLATFORM(WATCHOS)
>     ProcessThrottler::BackgroundActivityToken m_backgroundActivityTokenForFullscreenFormControls;
> #endif
>+    
>+#if PLATFORM(MAC) && ENABLE(WEBPROCESS_WINDOWSERVER_BLOCKING)
>+    CGLPixelFormatObj m_pixelFormatObj { nullptr };
>+#endif
> };
> 
> } // namespace WebKit
>Index: Source/WebKit/UIProcess/WebProcessProxy.messages.in
>===================================================================
>--- Source/WebKit/UIProcess/WebProcessProxy.messages.in	(revision 235781)
>+++ Source/WebKit/UIProcess/WebProcessProxy.messages.in	(working copy)
>@@ -70,4 +70,9 @@ messages -> WebProcessProxy LegacyReceiv
> #if PLATFORM(COCOA)
>     CacheMediaMIMETypes(Vector<String> types)
> #endif
>+
>+#if PLATFORM(MAC) && ENABLE(WEBPROCESS_WINDOWSERVER_BLOCKING)
>+    EnableHighPerformanceGPU()
>+    DisableHighPerformanceGPU()
>+#endif
> }
>Index: Source/WebKit/UIProcess/Cocoa/WebProcessProxyCocoa.mm
>===================================================================
>--- Source/WebKit/UIProcess/Cocoa/WebProcessProxyCocoa.mm	(revision 235781)
>+++ Source/WebKit/UIProcess/Cocoa/WebProcessProxyCocoa.mm	(working copy)
>@@ -172,4 +172,18 @@ Vector<String> WebProcessProxy::mediaMIM
>     return mediaTypeCache();
> }
> 
>+#if PLATFORM(MAC) && ENABLE(WEBPROCESS_WINDOWSERVER_BLOCKING)
>+void WebProcessProxy::enableHighPerformanceGPU()
>+{
>+    if (m_pixelFormatObj)
>+        return;
>+    m_pixelFormatObj = WebCore::GraphicsContext3DManager::enableHighPerformanceGPU();
>+}
>+
>+void WebProcessProxy::disableHighPerformanceGPU()
>+{
>+    WebCore::GraphicsContext3DManager::disableHighPerformanceGPU(m_pixelFormatObj);
>+}
>+#endif
>+
> }
>Index: Source/WebKit/WebKit.xcodeproj/project.pbxproj
>===================================================================
>--- Source/WebKit/WebKit.xcodeproj/project.pbxproj	(revision 235781)
>+++ Source/WebKit/WebKit.xcodeproj/project.pbxproj	(working copy)
>@@ -1709,6 +1709,8 @@
> 		C0CE72A11247E71D00BC0EC4 /* WebPageMessages.h in Headers */ = {isa = PBXBuildFile; fileRef = C0CE729F1247E71D00BC0EC4 /* WebPageMessages.h */; };
> 		C0CE72AD1247E78D00BC0EC4 /* HandleMessage.h in Headers */ = {isa = PBXBuildFile; fileRef = C0CE72AC1247E78D00BC0EC4 /* HandleMessage.h */; };
> 		C0E3AA7C1209E83C00A49D01 /* Module.h in Headers */ = {isa = PBXBuildFile; fileRef = C0E3AA441209E2BA00A49D01 /* Module.h */; };
>+		C11A9ECC214035F800CFB20A /* WebGPUClient.h in Headers */ = {isa = PBXBuildFile; fileRef = C11A9ECB214035F800CFB20A /* WebGPUClient.h */; };
>+		C11A9ED121403B4000CFB20A /* WebGPUClient.cpp in Sources */ = {isa = PBXBuildFile; fileRef = C11A9ED021403B4000CFB20A /* WebGPUClient.cpp */; };
> 		C11E1694212B87C500985FF6 /* WKMockDisplay.h in Headers */ = {isa = PBXBuildFile; fileRef = C11E1692212B87C500985FF6 /* WKMockDisplay.h */; settings = {ATTRIBUTES = (Private, ); }; };
> 		C11E1695212B87C500985FF6 /* WKMockDisplay.cpp in Sources */ = {isa = PBXBuildFile; fileRef = C11E1693212B87C500985FF6 /* WKMockDisplay.cpp */; };
> 		C18173612058424700DFDA65 /* DisplayLink.h in Headers */ = {isa = PBXBuildFile; fileRef = C18173602058424700DFDA65 /* DisplayLink.h */; };
>@@ -4472,6 +4474,8 @@
> 		C0E3AA441209E2BA00A49D01 /* Module.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Module.h; sourceTree = "<group>"; };
> 		C0E3AA451209E2BA00A49D01 /* Module.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Module.cpp; sourceTree = "<group>"; };
> 		C0E3AA481209E45000A49D01 /* ModuleCF.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = ModuleCF.cpp; sourceTree = "<group>"; };
>+		C11A9ECB214035F800CFB20A /* WebGPUClient.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = WebGPUClient.h; sourceTree = "<group>"; };
>+		C11A9ED021403B4000CFB20A /* WebGPUClient.cpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; path = WebGPUClient.cpp; sourceTree = "<group>"; };
> 		C11E1692212B87C500985FF6 /* WKMockDisplay.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = WKMockDisplay.h; sourceTree = "<group>"; };
> 		C11E1693212B87C500985FF6 /* WKMockDisplay.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = WKMockDisplay.cpp; sourceTree = "<group>"; };
> 		C181735E205839F600DFDA65 /* DrawingAreaMac.cpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; path = DrawingAreaMac.cpp; sourceTree = "<group>"; };
>@@ -7846,6 +7850,8 @@
> 				C5237F5F12441CA300780472 /* WebEditorClientMac.mm */,
> 				9391F283121B38F500EBF7E8 /* WebFrameNetworkingContext.h */,
> 				9391F284121B38F500EBF7E8 /* WebFrameNetworkingContext.mm */,
>+				C11A9ED021403B4000CFB20A /* WebGPUClient.cpp */,
>+				C11A9ECB214035F800CFB20A /* WebGPUClient.h */,
> 				BCC43AC6127B99DE00317F16 /* WebPopupMenuMac.mm */,
> 			);
> 			path = mac;
>@@ -9533,6 +9539,7 @@
> 				BC0E607312D6BC200012A72A /* WebGeolocationPosition.h in Headers */,
> 				BC1BE1F212D54DBD0004A228 /* WebGeolocationProvider.h in Headers */,
> 				2D5036761BCED19F00E20BB3 /* WebGestureEvent.h in Headers */,
>+				C11A9ECC214035F800CFB20A /* WebGPUClient.h in Headers */,
> 				93A88B331BC6E9CD00ABA5C2 /* WebHitTestResultData.h in Headers */,
> 				F44DFEB21E9E752F0038D196 /* WebIconUtilities.h in Headers */,
> 				510523701C739D42007993CB /* WebIDBConnectionToClient.h in Headers */,
>@@ -11222,6 +11229,7 @@
> 				CD73BA47131ACC9A00EEDED2 /* WebFullScreenManagerProxyMessageReceiver.cpp in Sources */,
> 				BC0E606112D6BA910012A72A /* WebGeolocationManagerMessageReceiver.cpp in Sources */,
> 				BC0E618212D6CB1D0012A72A /* WebGeolocationManagerProxyMessageReceiver.cpp in Sources */,
>+				C11A9ED121403B4000CFB20A /* WebGPUClient.cpp in Sources */,
> 				5105236F1C739D42007993CB /* WebIDBConnectionToClient.cpp in Sources */,
> 				510523791C73DA77007993CB /* WebIDBConnectionToClientMessageReceiver.cpp in Sources */,
> 				510523751C73D38F007993CB /* WebIDBConnectionToServerMessageReceiver.cpp in Sources */,
>Index: Source/WebKit/WebProcess/WebCoreSupport/mac/WebGPUClient.cpp
>===================================================================
>--- Source/WebKit/WebProcess/WebCoreSupport/mac/WebGPUClient.cpp	(nonexistent)
>+++ Source/WebKit/WebProcess/WebCoreSupport/mac/WebGPUClient.cpp	(working copy)
>@@ -0,0 +1,56 @@
>+/*
>+ * 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. ``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
>+ * 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 "WebGPUClient.h"
>+
>+#if PLATFORM(MAC) && ENABLE(WEBPROCESS_WINDOWSERVER_BLOCKING)
>+
>+#include "WebProcess.h"
>+#include "WebProcessProxyMessages.h"
>+#include <wtf/NeverDestroyed.h>
>+
>+namespace WebKit {
>+
>+WebGPUClient& WebGPUClient::singleton()
>+{
>+    static NeverDestroyed<WebGPUClient> client;
>+    return client;
>+}
>+
>+void WebGPUClient::enableHighPerformanceGPU()
>+{
>+    WebProcess::singleton().parentProcessConnection()->send(Messages::WebProcessProxy::EnableHighPerformanceGPU(), 0);
>+}
>+
>+void WebGPUClient::disableHighPerformanceGPU()
>+{
>+    WebProcess::singleton().parentProcessConnection()->send(Messages::WebProcessProxy::DisableHighPerformanceGPU(), 0);
>+}
>+
>+}
>+
>+#endif
>+
>Index: Source/WebKit/WebProcess/WebCoreSupport/mac/WebGPUClient.h
>===================================================================
>--- Source/WebKit/WebProcess/WebCoreSupport/mac/WebGPUClient.h	(nonexistent)
>+++ Source/WebKit/WebProcess/WebCoreSupport/mac/WebGPUClient.h	(working copy)
>@@ -0,0 +1,40 @@
>+/*
>+ * 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.
>+ */
>+
>+#pragma once
>+
>+#include <WebCore/GPUClient.h>
>+
>+namespace WebKit {
>+
>+class WebGPUClient : public WebCore::GPUClient {
>+public:
>+    static WebGPUClient& singleton();
>+    
>+    void enableHighPerformanceGPU() override;
>+    void disableHighPerformanceGPU() override;
>+};
>+
>+}
>Index: Source/WebKit/WebProcess/cocoa/WebProcessCocoa.mm
>===================================================================
>--- Source/WebKit/WebProcess/cocoa/WebProcessCocoa.mm	(revision 235781)
>+++ Source/WebKit/WebProcess/cocoa/WebProcessCocoa.mm	(working copy)
>@@ -89,6 +89,7 @@
> 
> #if PLATFORM(MAC)
> #import "WKAccessibilityWebPageObjectMac.h"
>+#import "WebGPUClient.h"
> #import <WebCore/GraphicsContext3DManager.h>
> #import <WebCore/ScrollbarThemeMac.h>
> #import <pal/spi/mac/NSScrollerImpSPI.h>
>@@ -330,6 +331,8 @@ void WebProcess::platformInitializeProce
>     RELEASE_ASSERT(retval == kCGErrorSuccess);
>     // Make sure that we close any WindowServer connections after checking in with Launch Services.
>     CGSShutdownServerConnections();
>+    
>+    GPUClient::setSingleton(WebGPUClient::singleton());
> #else
>     if (![NSApp isRunning]) {
>         // This call is needed when the WebProcess is not running the NSApplication event loop.
>Index: Source/WebKitLegacy/WebKitLegacy.xcodeproj/project.pbxproj
>===================================================================
>--- Source/WebKitLegacy/WebKitLegacy.xcodeproj/project.pbxproj	(revision 235781)
>+++ Source/WebKitLegacy/WebKitLegacy.xcodeproj/project.pbxproj	(working copy)
>@@ -772,6 +772,8 @@
> 		C0B88E8B10A08F3D00FBB3F5 /* WebFrameLoadDelegatePrivate.h in Headers */ = {isa = PBXBuildFile; fileRef = C0B88E8A10A08F3D00FBB3F5 /* WebFrameLoadDelegatePrivate.h */; settings = {ATTRIBUTES = (Private, ); }; };
> 		C0C5B3EE1177A4A0002B0AEF /* WebUserContentURLPattern.h in Headers */ = {isa = PBXBuildFile; fileRef = C0C5B3EC1177A4A0002B0AEF /* WebUserContentURLPattern.h */; settings = {ATTRIBUTES = (Private, ); }; };
> 		C0C5B3EF1177A4A0002B0AEF /* WebUserContentURLPattern.mm in Sources */ = {isa = PBXBuildFile; fileRef = C0C5B3ED1177A4A0002B0AEF /* WebUserContentURLPattern.mm */; };
>+		C11EBF4121419CCE00D659E7 /* WebGPUClient.cpp in Sources */ = {isa = PBXBuildFile; fileRef = C11EBF3F21419CCE00D659E7 /* WebGPUClient.cpp */; };
>+		C11EBF4221419CCE00D659E7 /* WebGPUClient.h in Headers */ = {isa = PBXBuildFile; fileRef = C11EBF4021419CCE00D659E7 /* WebGPUClient.h */; };
> 		C1D81128202CD80000EE74F9 /* WebVideoFullscreenController.mm in Sources */ = {isa = PBXBuildFile; fileRef = C1D81127202CD80000EE74F9 /* WebVideoFullscreenController.mm */; };
> 		C1D8112B202CDCC400EE74F9 /* WebVideoFullscreenHUDWindowController.mm in Sources */ = {isa = PBXBuildFile; fileRef = C1D81129202CDCC200EE74F9 /* WebVideoFullscreenHUDWindowController.mm */; };
> 		C1D8112E202CED0800EE74F9 /* WebWindowAnimation.mm in Sources */ = {isa = PBXBuildFile; fileRef = C1D8112D202CED0700EE74F9 /* WebWindowAnimation.mm */; };
>@@ -1525,6 +1527,8 @@
> 		C0B88E8A10A08F3D00FBB3F5 /* WebFrameLoadDelegatePrivate.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = WebFrameLoadDelegatePrivate.h; sourceTree = "<group>"; };
> 		C0C5B3EC1177A4A0002B0AEF /* WebUserContentURLPattern.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = WebUserContentURLPattern.h; sourceTree = "<group>"; };
> 		C0C5B3ED1177A4A0002B0AEF /* WebUserContentURLPattern.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = WebUserContentURLPattern.mm; sourceTree = "<group>"; };
>+		C11EBF3F21419CCE00D659E7 /* WebGPUClient.cpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; path = WebGPUClient.cpp; sourceTree = "<group>"; };
>+		C11EBF4021419CCE00D659E7 /* WebGPUClient.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = WebGPUClient.h; sourceTree = "<group>"; };
> 		C1D81126202CD7FE00EE74F9 /* WebVideoFullscreenController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = WebVideoFullscreenController.h; sourceTree = "<group>"; };
> 		C1D81127202CD80000EE74F9 /* WebVideoFullscreenController.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = WebVideoFullscreenController.mm; sourceTree = "<group>"; };
> 		C1D81129202CDCC200EE74F9 /* WebVideoFullscreenHUDWindowController.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = WebVideoFullscreenHUDWindowController.mm; sourceTree = "<group>"; };
>@@ -2587,6 +2591,8 @@
> 				9391F274121B38BD00EBF7E8 /* WebFrameNetworkingContext.mm */,
> 				BC7F884910C8775A00D6133D /* WebGeolocationClient.h */,
> 				BC7F884A10C8775A00D6133D /* WebGeolocationClient.mm */,
>+				C11EBF3F21419CCE00D659E7 /* WebGPUClient.cpp */,
>+				C11EBF4021419CCE00D659E7 /* WebGPUClient.h */,
> 				06693DDA0BFBA85200216072 /* WebInspectorClient.h */,
> 				06693DDB0BFBA85200216072 /* WebInspectorClient.mm */,
> 				1C7B0C650EB2464D00A28502 /* WebInspectorClientCF.cpp */,
>@@ -3034,6 +3040,7 @@
> 				BC7F88A510C9D88B00D6133D /* WebGeolocationPositionInternal.h in Headers */,
> 				A10C1D701820300E0036883A /* WebGeolocationPrivate.h in Headers */,
> 				A10C1D3618202FC50036883A /* WebGeolocationProviderIOS.h in Headers */,
>+				C11EBF4221419CCE00D659E7 /* WebGPUClient.h in Headers */,
> 				939810120824BF01008DF038 /* WebHistory.h in Headers */,
> 				5158F6EF106D862A00AF457C /* WebHistoryDelegate.h in Headers */,
> 				93FDE9330D79CAF30074F029 /* WebHistoryInternal.h in Headers */,
>@@ -3587,6 +3594,7 @@
> 				A10C1D3518202FC50036883A /* WebGeolocationCoreLocationProvider.mm in Sources */,
> 				BC7F889F10C9D30C00D6133D /* WebGeolocationPosition.mm in Sources */,
> 				A10C1D3718202FC50036883A /* WebGeolocationProviderIOS.mm in Sources */,
>+				C11EBF4121419CCE00D659E7 /* WebGPUClient.cpp in Sources */,
> 				939811130824BF01008DF038 /* WebHistory.mm in Sources */,
> 				939810BD0824BF01008DF038 /* WebHistoryItem.mm in Sources */,
> 				1AAF5FC00EDE3A92008D883D /* WebHostedNetscapePluginView.mm in Sources */,
>Index: Source/WebKitLegacy/mac/ChangeLog
>===================================================================
>--- Source/WebKitLegacy/mac/ChangeLog	(revision 235781)
>+++ Source/WebKitLegacy/mac/ChangeLog	(working copy)
>@@ -1,3 +1,28 @@
>+2018-09-06  Per Arne Vollan  <pvollan@apple.com>
>+
>+        [macOS] Switching to discrete GPU should be done in the UI process
>+        https://bugs.webkit.org/show_bug.cgi?id=189361
>+        <rdar://problem/43949622>
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        When WebGL is requesting to use the discrete GPU on a muxable system by setting the powerPreference
>+        attribute to "high-performance", a call to CGLChoosePixelFormat is made to perform the switch. This
>+        method of switching does not work when there is no WindowServer access in the WebContent process.
>+        This call needs to be made in the UI process. This patch adds two new support classes (GPUClient
>+        and WebGPUClient) to broker these calls to the UI process. WebKit legacy support is maintained by
>+        implementing the WebGPUClient class on the legacy side. The new code is protected by using the
>+        ENABLE(WEBPROCESS_WINDOWSERVER_BLOCKING) define.
>+
>+        * WebCoreSupport/WebGPUClient.cpp: Added.
>+        (WebGPUClient::singleton):
>+        (WebGPUClient::enableHighPerformanceGPU):
>+        (WebGPUClient::disableHighPerformanceGPU):
>+        * WebCoreSupport/WebGPUClient.h: Added.
>+        (WebGPUClient::~WebGPUClient):
>+        * WebView/WebView.mm:
>+        (-[WebView _commonInitializationWithFrameName:groupName:]):
>+
> 2018-09-06  Wenson Hsieh  <wenson_hsieh@apple.com>
> 
>         Refactor WebCore::EditAction to be an 8-bit enum class
>Index: Source/WebKitLegacy/mac/WebCoreSupport/WebGPUClient.cpp
>===================================================================
>--- Source/WebKitLegacy/mac/WebCoreSupport/WebGPUClient.cpp	(nonexistent)
>+++ Source/WebKitLegacy/mac/WebCoreSupport/WebGPUClient.cpp	(working copy)
>@@ -0,0 +1,51 @@
>+
>+/*
>+ * 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. ``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
>+ * 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.
>+ */
>+
>+#if PLATFORM(MAC)
>+
>+#include "WebGPUClient.h"
>+
>+#include <wtf/NeverDestroyed.h>
>+
>+using namespace WebCore;
>+
>+WebGPUClient& WebGPUClient::singleton()
>+{
>+    static NeverDestroyed<WebGPUClient> client;
>+    return client;
>+}
>+
>+void WebGPUClient::enableHighPerformanceGPU()
>+{
>+    m_pixelFormatObj = GraphicsContext3DManager::enableHighPerformanceGPU();
>+}
>+
>+void WebGPUClient::disableHighPerformanceGPU()
>+{
>+    GraphicsContext3DManager::disableHighPerformanceGPU(m_pixelFormatObj);
>+}
>+#endif
>+
>Index: Source/WebKitLegacy/mac/WebCoreSupport/WebGPUClient.h
>===================================================================
>--- Source/WebKitLegacy/mac/WebCoreSupport/WebGPUClient.h	(nonexistent)
>+++ Source/WebKitLegacy/mac/WebCoreSupport/WebGPUClient.h	(working copy)
>@@ -0,0 +1,41 @@
>+/*
>+ * 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.
>+ */
>+
>+#pragma once
>+
>+#include <WebCore/GPUClient.h>
>+#include <WebCore/GraphicsContext3DManager.h>
>+
>+class WebGPUClient : public WebCore::GPUClient {
>+public:
>+    static WebGPUClient& singleton();
>+    virtual ~WebGPUClient() { }
>+
>+    void enableHighPerformanceGPU() override;
>+    void disableHighPerformanceGPU() override;
>+
>+private:
>+    CGLPixelFormatObj m_pixelFormatObj { nullptr };
>+};
>Index: Source/WebKitLegacy/mac/WebView/WebView.mm
>===================================================================
>--- Source/WebKitLegacy/mac/WebView/WebView.mm	(revision 235781)
>+++ Source/WebKitLegacy/mac/WebView/WebView.mm	(working copy)
>@@ -67,6 +67,7 @@
> #import "WebFrameLoaderClient.h"
> #import "WebFrameNetworkingContext.h"
> #import "WebFrameViewInternal.h"
>+#import "WebGPUClient.h"
> #import "WebGeolocationClient.h"
> #import "WebGeolocationPositionInternal.h"
> #import "WebHTMLRepresentation.h"
>@@ -151,6 +152,7 @@
> #import <WebCore/FrameTree.h>
> #import <WebCore/FrameView.h>
> #import <WebCore/GCController.h>
>+#import <WebCore/GPUClient.h>
> #import <WebCore/GameControllerGamepadProvider.h>
> #import <WebCore/GeolocationController.h>
> #import <WebCore/GeolocationError.h>
>@@ -1406,7 +1408,7 @@ - (void)_commonInitializationWithFrameNa
> #if ENABLE(GAMEPAD)
>         WebKitInitializeGamepadProviderIfNecessary();
> #endif
>-        
>+        GPUClient::setSingleton(WebGPUClient::singleton());
>         DeprecatedGlobalSettings::setShouldRespectPriorityInCSSAttributeSetters(shouldRespectPriorityInCSSAttributeSetters());
> 
> #if PLATFORM(IOS)
>Index: Tools/ChangeLog
>===================================================================
>--- Tools/ChangeLog	(revision 235781)
>+++ Tools/ChangeLog	(working copy)
>@@ -1,3 +1,29 @@
>+2018-09-06  Per Arne Vollan  <pvollan@apple.com>
>+
>+        [macOS] Switching to discrete GPU should be done in the UI process
>+        https://bugs.webkit.org/show_bug.cgi?id=189361
>+        <rdar://problem/43949622>
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        When WebGL is requesting to use the discrete GPU on a muxable system by setting the powerPreference
>+        attribute to "high-performance", a call to CGLChoosePixelFormat is made to perform the switch. This
>+        method of switching does not work when there is no WindowServer access in the WebContent process.
>+        This call needs to be made in the UI process. This patch adds two new support classes (GPUClient
>+        and WebGPUClient) to broker these calls to the UI process. WebKit legacy support is maintained by
>+        implementing the WebGPUClient class on the legacy side. The new code is protected by using the
>+        ENABLE(WEBPROCESS_WINDOWSERVER_BLOCKING) define.
>+
>+        * WebKitTestRunner/InjectedBundle/Bindings/TestRunner.idl:
>+        * WebKitTestRunner/InjectedBundle/TestRunner.cpp:
>+        (WTR::TestRunner::isCurrentGPULowPower):
>+        * WebKitTestRunner/InjectedBundle/TestRunner.h:
>+        * WebKitTestRunner/TestController.h:
>+        * WebKitTestRunner/TestInvocation.cpp:
>+        (WTR::TestInvocation::didReceiveSynchronousMessageFromInjectedBundle):
>+        * WebKitTestRunner/mac/TestControllerMac.mm:
>+        (WTR::TestController::isCurrentGPULowPower):
>+
> 2018-09-06  Zalan Bujtas  <zalan@apple.com>
> 
>         [LFC] Add support for min/max-height percentage values.
>Index: Tools/WebKitTestRunner/TestController.h
>===================================================================
>--- Tools/WebKitTestRunner/TestController.h	(revision 235781)
>+++ Tools/WebKitTestRunner/TestController.h	(working copy)
>@@ -253,6 +253,8 @@ public:
>     
>     void sendDisplayConfigurationChangedMessageForTesting();
> 
>+    bool isCurrentGPULowPower();
>+
> private:
>     WKRetainPtr<WKPageConfigurationRef> generatePageConfiguration(WKContextConfigurationRef);
>     WKRetainPtr<WKContextConfigurationRef> generateContextConfiguration() const;
>Index: Tools/WebKitTestRunner/TestInvocation.cpp
>===================================================================
>--- Tools/WebKitTestRunner/TestInvocation.cpp	(revision 235781)
>+++ Tools/WebKitTestRunner/TestInvocation.cpp	(working copy)
>@@ -1427,6 +1427,13 @@ WKRetainPtr<WKTypeRef> TestInvocation::d
>         return nullptr;
>     }
> 
>+#if PLATFORM(MAC)
>+    if (WKStringIsEqualToUTF8CString(messageName, "IsCurrentGPULowPower")) {
>+        WKRetainPtr<WKBooleanRef> result(AdoptWK, WKBooleanCreate(TestController::singleton().isCurrentGPULowPower()));
>+        return result;
>+    }
>+#endif
>+
>     if (WKStringIsEqualToUTF8CString(messageName, "TerminateStorageProcess")) {
>         ASSERT(!messageBody);
>         TestController::singleton().terminateStorageProcess();
>Index: Tools/WebKitTestRunner/InjectedBundle/TestRunner.cpp
>===================================================================
>--- Tools/WebKitTestRunner/InjectedBundle/TestRunner.cpp	(revision 235781)
>+++ Tools/WebKitTestRunner/InjectedBundle/TestRunner.cpp	(working copy)
>@@ -2341,4 +2341,12 @@ void TestRunner::sendDisplayConfiguratio
>     WKBundlePostSynchronousMessage(InjectedBundle::singleton().bundle(), messageName.get(), nullptr, nullptr);
> }
> 
>+bool TestRunner::isCurrentGPULowPower()
>+{
>+    WKRetainPtr<WKStringRef> messageName(AdoptWK, WKStringCreateWithUTF8CString("IsCurrentGPULowPower"));
>+    WKTypeRef returnData = 0;
>+    WKBundlePagePostSynchronousMessageForTesting(InjectedBundle::singleton().page()->page(), messageName.get(), nullptr, &returnData);
>+    return WKBooleanGetValue(static_cast<WKBooleanRef>(returnData));
>+}
>+
> } // namespace WTR
>Index: Tools/WebKitTestRunner/InjectedBundle/TestRunner.h
>===================================================================
>--- Tools/WebKitTestRunner/InjectedBundle/TestRunner.h	(revision 235781)
>+++ Tools/WebKitTestRunner/InjectedBundle/TestRunner.h	(working copy)
>@@ -467,6 +467,8 @@ public:
> 
>     void sendDisplayConfigurationChangedMessageForTesting();
> 
>+    bool isCurrentGPULowPower();
>+
> private:
>     TestRunner();
> 
>Index: Tools/WebKitTestRunner/InjectedBundle/Bindings/TestRunner.idl
>===================================================================
>--- Tools/WebKitTestRunner/InjectedBundle/Bindings/TestRunner.idl	(revision 235781)
>+++ Tools/WebKitTestRunner/InjectedBundle/Bindings/TestRunner.idl	(working copy)
>@@ -350,4 +350,6 @@ interface TestRunner {
>     readonly attribute unsigned long userScriptInjectedCount;
> 
>     void sendDisplayConfigurationChangedMessageForTesting();
>+
>+    boolean isCurrentGPULowPower();
> };
>Index: Tools/WebKitTestRunner/mac/TestControllerMac.mm
>===================================================================
>--- Tools/WebKitTestRunner/mac/TestControllerMac.mm	(revision 235781)
>+++ Tools/WebKitTestRunner/mac/TestControllerMac.mm	(working copy)
>@@ -31,6 +31,7 @@
> #import "TestInvocation.h"
> #import "TestRunnerWKWebView.h"
> #import "WebKitTestRunnerPasteboard.h"
>+#import <Metal/MTLDevice.h>
> #import <WebKit/WKContextPrivate.h>
> #import <WebKit/WKPageGroup.h>
> #import <WebKit/WKProcessPoolPrivate.h>
>@@ -350,4 +351,11 @@ const char* TestController::platformLibr
>     return [[@"~/Library/Application Support/DumpRenderTree" stringByExpandingTildeInPath] UTF8String];
> }
> 
>+bool TestController::isCurrentGPULowPower()
>+{
>+    auto display = CGMainDisplayID();
>+    auto device = adoptNS(CGDirectDisplayCopyCurrentMetalDevice(display));
>+    return device.get().isLowPower;
>+}
>+
> } // namespace WTR
>Index: LayoutTests/ChangeLog
>===================================================================
>--- LayoutTests/ChangeLog	(revision 235781)
>+++ LayoutTests/ChangeLog	(working copy)
>@@ -1,3 +1,23 @@
>+2018-09-06  Per Arne Vollan  <pvollan@apple.com>
>+
>+        [macOS] Switching to discrete GPU should be done in the UI process
>+        https://bugs.webkit.org/show_bug.cgi?id=189361
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        When WebGL is requesting to use the discrete GPU on a muxable system by setting the powerPreference
>+        attribute to "high-performance", a call to CGLChoosePixelFormat is made to perform the switch. This
>+        method of switching does not work when there is no WindowServer access in the WebContent process.
>+        This call needs to be made in the UI process. This patch adds two new support classes (GPUClient
>+        and WebGPUClient) to broker these calls to the UI process. WebKit legacy support is maintained by
>+        implementing the WebGPUClient class on the legacy side. The new code is protected by using the
>+        ENABLE(WEBPROCESS_WINDOWSERVER_BLOCKING) define.
>+
>+        * TestExpectations:
>+        * fast/canvas/webgl/switch-to-discrete-gpu-expected.txt: Added.
>+        * fast/canvas/webgl/switch-to-discrete-gpu.html: Added.
>+        * platform/mac-wk2/TestExpectations:
>+
> 2018-09-06  Zalan Bujtas  <zalan@apple.com>
> 
>         [LFC] Add support for min/max-height percentage values.
>Index: LayoutTests/TestExpectations
>===================================================================
>--- LayoutTests/TestExpectations	(revision 235781)
>+++ LayoutTests/TestExpectations	(working copy)
>@@ -403,6 +403,8 @@ fast/canvas/webgl/context-update-on-disp
> 
> fast/misc/valid-primary-screen-displayID.html [ Skip ]
> 
>+fast/canvas/webgl/switch-to-discrete-gpu.html [ Skip ]
>+
> #//////////////////////////////////////////////////////////////////////////////////////////
> # End platform-specific tests.
> #//////////////////////////////////////////////////////////////////////////////////////////
>Index: LayoutTests/fast/canvas/webgl/switch-to-discrete-gpu-expected.txt
>===================================================================
>--- LayoutTests/fast/canvas/webgl/switch-to-discrete-gpu-expected.txt	(nonexistent)
>+++ LayoutTests/fast/canvas/webgl/switch-to-discrete-gpu-expected.txt	(working copy)
>@@ -0,0 +1,9 @@
>+Tests that the discrete GPU is used when the powerPreference attribute is set to "high-performance"
>+
>+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
>+
>+
>+PASS successfullyParsed is true
>+
>+TEST COMPLETE
>+
>Index: LayoutTests/fast/canvas/webgl/switch-to-discrete-gpu.html
>===================================================================
>--- LayoutTests/fast/canvas/webgl/switch-to-discrete-gpu.html	(nonexistent)
>+++ LayoutTests/fast/canvas/webgl/switch-to-discrete-gpu.html	(working copy)
>@@ -0,0 +1,48 @@
>+<html>
>+<head>
>+<style>
>+#example {
>+  width: 100%;
>+  height: 100%;
>+}
>+</style>
>+<script src="../../../resources/js-test.js"></script>
>+<script src="resources/webgl-test-utils.js"> </script>
>+<script>
>+description('Tests that the discrete GPU is used when the powerPreference attribute is set to "high-performance"');
>+
>+function checkGPU()
>+{
>+    if (window.testRunner) {
>+        if (!testRunner.isCurrentGPULowPower())
>+            testRunner.notifyDone();
>+    }
>+}
>+
>+function start()
>+{
>+    if (window.testRunner) {
>+        testRunner.dumpAsText();
>+        testRunner.waitUntilDone();
>+
>+    }
>+
>+    // Finish the test if there is no muxable GPU on the machine, since the test is not relevant then.
>+    if (window.internals)
>+        if (!window.internals.hasMuxableGPU())
>+            testRunner.notifyDone();
>+
>+    var canvas = document.getElementById('example');
>+    
>+    var gl = WebGLTestUtils.create3DContext(canvas, {powerPreference: "high-performance"});
>+    
>+    checkGPU();
>+}
>+</script>
>+</head>
>+
>+<body onload="start()">
>+    <canvas id="example"></canvas>
>+</body>
>+</html>
>+
>Index: LayoutTests/platform/mac-wk2/TestExpectations
>===================================================================
>--- LayoutTests/platform/mac-wk2/TestExpectations	(revision 235781)
>+++ LayoutTests/platform/mac-wk2/TestExpectations	(working copy)
>@@ -57,6 +57,8 @@ webkit.org/b/187183 http/tests/security/
> 
> fast/misc/valid-primary-screen-displayID.html [ Pass ]
> 
>+[ Mojave+ ] fast/canvas/webgl/switch-to-discrete-gpu.html [ Pass ]
>+
> #//////////////////////////////////////////////////////////////////////////////////////////
> # End platform-specific directories.
> #//////////////////////////////////////////////////////////////////////////////////////////

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Attachments on bug 189361: 349090 | 349145 | 349147 | 349150 | 349337 | 349344 | 349351 | 349451 | 349459 | 351268 | 351344 | 351348 | 351350 | 351371 | 351407 | 351421 | 351434