Attachment 180664 Details for Bug 105602 – patch

[patch] patch

eglcontextchanges.patch (text/plain), 46.26 KB, created by Kalyan on 2012-12-24 05:37:20 PST

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Creator: Kalyan

Created: 2012-12-24 05:37:20 PST

Size: 46.26 KB

patch

obsolete

>diff --git ChangeLog ChangeLog
>index fbaf4dc..51d41f3 100644
>--- ChangeLog
>+++ ChangeLog
>@@ -1,3 +1,15 @@
>+2012-12-21  Kondapally Kalyan  <kalyan.kondapally@intel.com>
>+
>+        [EFL][WebGL] Implement EGL support with GLX.
>+        https://bugs.webkit.org/show_bug.cgi?id=105602
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Adds support for EGL with GLX backend. EGL support can be enabled during compile time
>+        by passing -DENABLE_EGL=ON as cmake config parameter.
>+
>+        * Source/cmake/OptionsEfl.cmake:
>+
> 2012-12-21  Sheriff Bot  <webkit.review.bot@gmail.com>
> 
>         Unreviewed, rolling out r138338.
>diff --git Source/WebCore/ChangeLog Source/WebCore/ChangeLog
>index 1a0404f..04878bd 100644
>--- Source/WebCore/ChangeLog
>+++ Source/WebCore/ChangeLog
>@@ -1,3 +1,79 @@
>+2012-12-21  Kondapally Kalyan  <kalyan.kondapally@intel.com>
>+
>+        [EFL][WebGL] Implement EGL support with GLX.
>+        https://bugs.webkit.org/show_bug.cgi?id=105602
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        This is in preparation for adding GLES2 support.
>+        This patch adds support for EGL with GLX backend. EGL support can be enabled during compile time
>+        by passing -DENABLE_EGL=ON as cmake config parameter. This is disabled by default.
>+
>+        * PlatformEfl.cmake:
>+        * platform/graphics/opengl/GLDefs.h:
>+        (WebCore):
>+        * platform/graphics/opengl/GLPlatformContext.cpp:
>+        (WebCore):
>+        (WebCore::GLPlatformContext::createContext): Added GLX checks.
>+        (WebCore::GLPlatformContext::createOffScreenContext): Added support for creating EGLOffscreen Context.
>+        (WebCore::GLPlatformContext::createCurrentContextWrapper): Added support for creating EGLCurrentContextWrapper.
>+        * platform/graphics/opengl/GLPlatformContext.h:
>+        * platform/graphics/opengl/GLPlatformSurface.cpp:
>+        (WebCore::GLPlatformSurface::createTransportSurface): Added support for creating EGLSurface.
>+
>+        * platform/graphics/surfaces/egl/EGLContext.cpp: Added.
>+        (WebCore):
>+        (WebCore::isRobustnessExtSupported):
>+        (WebCore::EGLCurrentContextWrapper::EGLCurrentContextWrapper):
>+        (WebCore::EGLCurrentContextWrapper::handle):
>+        (WebCore::EGLOffScreenContext::EGLOffScreenContext):
>+        (WebCore::EGLOffScreenContext::initialize):
>+        (WebCore::EGLOffScreenContext::~EGLOffScreenContext):
>+        (WebCore::EGLOffScreenContext::isCurrentContext):
>+        (WebCore::EGLOffScreenContext::platformMakeCurrent):
>+        (WebCore::EGLOffScreenContext::platformReleaseCurrent):
>+        (WebCore::EGLOffScreenContext::freeResources):
>+        (WebCore::EGLOffScreenContext::destroy):
>+        * platform/graphics/surfaces/egl/EGLContext.h:
>+        (WebCore):
>+        (EGLCurrentContextWrapper):
>+        (WebCore::EGLCurrentContextWrapper::~EGLCurrentContextWrapper):
>+        (EGLOffScreenContext):
>+
>+        EGL implementation for Context Management.
>+
>+        * platform/graphics/surfaces/egl/EGLSurface.cpp: Added.
>+        (WebCore):
>+        (WebCore::EGLWindowTransportSurface::EGLWindowTransportSurface):
>+        (WebCore::EGLWindowTransportSurface::~EGLWindowTransportSurface):
>+        (WebCore::EGLWindowTransportSurface::configuration):
>+        (WebCore::EGLWindowTransportSurface::swapBuffers):
>+        (WebCore::EGLWindowTransportSurface::destroy):
>+        (WebCore::EGLWindowTransportSurface::freeEGLResources):
>+        * platform/graphics/surfaces/egl/EGLSurface.h:
>+        (WebCore):
>+        (EGLWindowTransportSurface):
>+
>+        EGL implementation for Offscreen Surface. The surface is backed by native window.
>+
>+        * platform/graphics/surfaces/egl/EGLConfigHelper.cpp: Added.
>+        (WebCore):
>+        (WebCore::SharedEGLDisplay::deref):
>+        (WebCore::SharedEGLDisplay::sharedEGLDisplay):
>+        (WebCore::SharedEGLDisplay::SharedEGLDisplay):
>+        (WebCore::SharedEGLDisplay::cleanup):
>+        (WebCore::SharedEGLDisplay::~SharedEGLDisplay):
>+        (WebCore::EGLConfigHelper::EGLConfigHelper):
>+        (WebCore::EGLConfigHelper::~EGLConfigHelper):
>+        (WebCore::EGLConfigHelper::display):
>+        (WebCore::EGLConfigHelper::pBufferContextConfig):
>+        (WebCore::EGLConfigHelper::surfaceContextConfig):
>+        (WebCore::EGLConfigHelper::nativeVisualId):
>+        (WebCore::EGLConfigHelper::reset):
>+        (WebCore::EGLConfigHelper::createConfig):
>+
>+        Helper class to initialize EGL resources and choose right EGL configiration.
>+
> 2012-12-21  Brady Eidson  <beidson@apple.com>
> 
>         Update localizable strings as a followup to http://trac.webkit.org/changeset/138387
>diff --git Source/WebCore/PlatformEfl.cmake Source/WebCore/PlatformEfl.cmake
>index 56e306c..e7e469c 100644
>--- Source/WebCore/PlatformEfl.cmake
>+++ Source/WebCore/PlatformEfl.cmake
>@@ -265,6 +265,14 @@ if (WTF_USE_3D_GRAPHICS)
>         "${WEBCORE_DIR}/platform/graphics/surfaces/glx"
>         "${WEBCORE_DIR}/platform/graphics/texmap"
>     )
>+
>+    if (WTF_USE_EGL)
>+        list(APPEND WebCore_INCLUDE_DIRECTORIES
>+            ${EGL_INCLUDE_DIR}
>+            "${WEBCORE_DIR}/platform/graphics/surfaces/egl"
>+    )
>+    endif ()
>+
>     list(APPEND WebCore_SOURCES
>         platform/graphics/OpenGLShims.cpp
>         platform/graphics/cairo/DrawingBufferCairo.cpp
>@@ -277,18 +285,36 @@ if (WTF_USE_3D_GRAPHICS)
>         platform/graphics/opengl/GraphicsContext3DOpenGL.cpp
>         platform/graphics/opengl/GraphicsContext3DOpenGLCommon.cpp
>         platform/graphics/surfaces/GraphicsSurface.cpp
>-        platform/graphics/surfaces/glx/GLXSurface.cpp
>-        platform/graphics/surfaces/glx/GLXContext.cpp
>         platform/graphics/surfaces/glx/GraphicsSurfaceGLX.cpp
>         platform/graphics/surfaces/glx/X11WindowResources.cpp
>         platform/graphics/texmap/TextureMapperGL.cpp
>         platform/graphics/texmap/TextureMapperShaderManager.cpp
>     )
>+
>+    if (WTF_USE_EGL)
>+        list(APPEND WebCore_SOURCES
>+            platform/graphics/surfaces/egl/EGLSurface.cpp
>+            platform/graphics/surfaces/egl/EGLContext.cpp
>+        )
>+    endif ()
>+
>+    if (WTF_USE_GLX)
>+        list(APPEND WebCore_SOURCES
>+            platform/graphics/surfaces/glx/GLXSurface.cpp
>+            platform/graphics/surfaces/glx/GLXContext.cpp
>+        )
>+    endif ()
>+
>     list(APPEND WebCore_LIBRARIES
>         ${X11_X11_LIB}
>         ${X11_Xcomposite_LIB}
>         ${X11_Xrender_LIB}
>     )
>+    if (WTF_USE_EGL)
>+        list(APPEND WebCore_LIBRARIES
>+            ${EGL_LIBRARY}
>+        )
>+    endif ()
> endif ()
> 
> add_definitions(-DDATA_DIR="${CMAKE_INSTALL_PREFIX}/${DATA_INSTALL_DIR}")
>diff --git Source/WebCore/platform/graphics/opengl/GLDefs.h Source/WebCore/platform/graphics/opengl/GLDefs.h
>index 2dfb4c9..f823dc4 100644
>--- Source/WebCore/platform/graphics/opengl/GLDefs.h
>+++ Source/WebCore/platform/graphics/opengl/GLDefs.h
>@@ -28,12 +28,12 @@
> 
> #if USE(ACCELERATED_COMPOSITING)
> 
>-#include "OpenGLShims.h"
>-
> #if USE(OPENGL_ES_2)
>+#include "OpenGLESShims.h"
> #include <GLES2/gl2.h>
> #include <GLES2/gl2ext.h>
> #else
>+#include "OpenGLShims.h"
> #include <GL/gl.h>
> #include <GL/glext.h>
> #endif
>@@ -42,6 +42,12 @@
> #include <GL/glx.h>
> #endif
> 
>+#if USE(EGL)
>+#define EGL_EGLEXT_PROTOTYPES 1
>+#include <EGL/egl.h>
>+#include <EGL/eglext.h>
>+#endif
>+
> namespace WebCore {
> 
> typedef uint32_t PlatformBufferHandle;
>@@ -51,6 +57,16 @@ typedef GLXContext PlatformContext;
> typedef Display* PlatformDisplay;
> typedef GLXFBConfig PlatformSurfaceConfig;
> typedef GLXDrawable PlatformDrawable;
>+#elif USE(EGL)
>+#if USE(OPENGL_ES_2)
>+static const EGLenum eglAPIVersion = EGL_OPENGL_ES_API;
>+#else
>+static const EGLenum eglAPIVersion = EGL_OPENGL_API;
>+#endif
>+typedef EGLContext PlatformContext;
>+typedef EGLDisplay PlatformDisplay;
>+typedef EGLConfig PlatformSurfaceConfig;
>+typedef EGLSurface PlatformDrawable;
> #else
> typedef void* PlatformContext;
> typedef void* PlatformDisplay;
>diff --git Source/WebCore/platform/graphics/opengl/GLPlatformContext.cpp Source/WebCore/platform/graphics/opengl/GLPlatformContext.cpp
>index 7621e2e..79959ba 100644
>--- Source/WebCore/platform/graphics/opengl/GLPlatformContext.cpp
>+++ Source/WebCore/platform/graphics/opengl/GLPlatformContext.cpp
>@@ -30,6 +30,8 @@
> 
> #if USE(GLX)
> #include "GLXContext.h"
>+#elif USE(EGL)
>+#include "EGLContext.h"
> #endif
> 
> #include "NotImplemented.h"
>@@ -44,11 +46,11 @@ PassOwnPtr<GLPlatformContext> GLPlatformContext::createContext(GraphicsContext3D
>     if (!initializeOpenGLShims())
>         return nullptr;
> 
>-    if (!glGetGraphicsResetStatusARB) {
> #if USE(GLX)
>+    if (!glGetGraphicsResetStatusARB) {
>         glGetGraphicsResetStatusARB = reinterpret_cast<PFNGLGETGRAPHICSRESETSTATUSARBPROC>(glXGetProcAddressARB(reinterpret_cast<const GLubyte*>("glGetGraphicsResetStatusARB")));
>-#endif
>     }
>+#endif
> 
>     switch (renderStyle) {
>     case GraphicsContext3D::RenderOffscreen:
>@@ -70,8 +72,9 @@ PassOwnPtr<GLPlatformContext> GLPlatformContext::createContext(GraphicsContext3D
> PassOwnPtr<GLPlatformContext> GLPlatformContext::createOffScreenContext()
> {
> #if USE(GLX)
>-    OwnPtr<GLPlatformContext> glxContext = adoptPtr(new GLXOffScreenContext());
>-    return glxContext.release();
>+    return adoptPtr(new GLXOffScreenContext());
>+#elif USE(EGL)
>+    return adoptPtr(new EGLOffScreenContext());
> #endif
> 
>     return nullptr;
>@@ -80,8 +83,9 @@ PassOwnPtr<GLPlatformContext> GLPlatformContext::createOffScreenContext()
> PassOwnPtr<GLPlatformContext> GLPlatformContext::createCurrentContextWrapper()
> {
> #if USE(GLX)
>-    OwnPtr<GLPlatformContext> glxContext = adoptPtr(new GLXCurrentContextWrapper());
>-    return glxContext.release();
>+    return adoptPtr(new GLXCurrentContextWrapper());
>+#elif USE(EGL)
>+    return adoptPtr(new EGLCurrentContextWrapper());
> #endif
> 
>     return nullptr;
>diff --git Source/WebCore/platform/graphics/opengl/GLPlatformContext.h Source/WebCore/platform/graphics/opengl/GLPlatformContext.h
>index 170b76e..0353df8 100644
>--- Source/WebCore/platform/graphics/opengl/GLPlatformContext.h
>+++ Source/WebCore/platform/graphics/opengl/GLPlatformContext.h
>@@ -64,7 +64,7 @@ public:
>     // Doesn't have any effect if this is not the current Context.
>     void releaseCurrent();
> 
>-    PlatformContext handle() const;
>+    virtual PlatformContext handle() const;
> 
>     virtual bool isCurrentContext() const;
> 
>diff --git Source/WebCore/platform/graphics/opengl/GLPlatformSurface.cpp Source/WebCore/platform/graphics/opengl/GLPlatformSurface.cpp
>index 8391e47..7f7a564 100644
>--- Source/WebCore/platform/graphics/opengl/GLPlatformSurface.cpp
>+++ Source/WebCore/platform/graphics/opengl/GLPlatformSurface.cpp
>@@ -32,6 +32,10 @@
> #include "GLXSurface.h"
> #endif
> 
>+#if USE(EGL)
>+#include "EGLSurface.h"
>+#endif
>+
> #include "NotImplemented.h"
> 
> namespace WebCore {
>@@ -50,10 +54,14 @@ PassOwnPtr<GLPlatformSurface> GLPlatformSurface::createOffscreenSurface()
> 
> PassOwnPtr<GLPlatformSurface> GLPlatformSurface::createTransportSurface()
> {
>-#if USE(GLX) && USE(GRAPHICS_SURFACE)
>+#if USE(GRAPHICS_SURFACE)
>+#if USE(GLX)
>     OwnPtr<GLPlatformSurface> surface = adoptPtr(new GLXTransportSurface());
>+#elif USE(EGL)
>+    OwnPtr<GLPlatformSurface> surface = adoptPtr(new EGLWindowTransportSurface());
>+#endif
> 
>-    if (surface->handle())
>+    if (surface && surface->handle() && surface->drawable())
>         return surface.release();
> #endif
> 
>diff --git Source/WebCore/platform/graphics/surfaces/egl/EGLConfigHelper.cpp Source/WebCore/platform/graphics/surfaces/egl/EGLConfigHelper.cpp
>new file mode 100644
>index 0000000..254ea49
>--- /dev/null
>+++ Source/WebCore/platform/graphics/surfaces/egl/EGLConfigHelper.cpp
>@@ -0,0 +1,181 @@
>+/*
>+ * Copyright (C) 2012 Intel Corporation. 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 "EGLConfigHelper.h"
>+
>+#if USE(EGL)
>+
>+namespace WebCore {
>+
>+SharedEGLDisplay* SharedEGLDisplay::m_staticSharedEGLDisplay = 0;
>+
>+static EGLint configAttributeList[] = {
>+#if USE(OPENGL_ES_2)
>+    EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
>+#else
>+    EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
>+#endif
>+    EGL_RED_SIZE, 8,
>+    EGL_GREEN_SIZE, 8,
>+    EGL_BLUE_SIZE, 8,
>+    EGL_STENCIL_SIZE, 8,
>+    EGL_ALPHA_SIZE, 8,
>+    EGL_SURFACE_TYPE, EGL_NONE,
>+    EGL_NONE
>+};
>+
>+void SharedEGLDisplay::deref()
>+{
>+    if (derefBase()) {
>+        m_staticSharedEGLDisplay = 0;
>+        delete this;
>+    }
>+}
>+
>+EGLDisplay SharedEGLDisplay::sharedEGLDisplay()
>+{
>+    return m_eglDisplay;
>+}
>+
>+SharedEGLDisplay::SharedEGLDisplay(NativeSharedDisplay* display)
>+    : m_eglDisplay(EGL_NO_DISPLAY)
>+{
>+    if (display)
>+        m_eglDisplay = eglGetDisplay(reinterpret_cast<EGLNativeDisplayType>(display));
>+    else
>+        m_eglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
>+
>+    if (m_eglDisplay == EGL_NO_DISPLAY) {
>+        LOG_ERROR("EGLDisplay Initialization failed.\n");
>+        return;
>+    }
>+
>+    EGLBoolean success;
>+    success = eglInitialize(m_eglDisplay, 0, 0);
>+
>+    if (success != EGL_TRUE) {
>+        LOG_ERROR("EGLInitialization failed.\n");
>+        m_eglDisplay = EGL_NO_DISPLAY;
>+    }
>+
>+    success = eglBindAPI(eglAPIVersion);
>+
>+    if (success != EGL_TRUE) {
>+        LOG_ERROR("Failed to set EGL API(%d).\n", eglGetError());
>+        m_eglDisplay = EGL_NO_DISPLAY;
>+    }
>+}
>+
>+void SharedEGLDisplay::cleanup()
>+{
>+    if (m_eglDisplay == EGL_NO_DISPLAY)
>+        return;
>+
>+    eglMakeCurrent(m_eglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
>+    eglTerminate(m_eglDisplay);
>+    m_eglDisplay = EGL_NO_DISPLAY;
>+}
>+
>+SharedEGLDisplay::~SharedEGLDisplay()
>+{
>+    cleanup();
>+}
>+
>+EGLConfigHelper::EGLConfigHelper(NativeSharedDisplay* display)
>+    : m_pbufferfbConfig(0)
>+    , m_surfaceContextfbConfig(0)
>+{
>+    m_sharedDisplay = SharedEGLDisplay::create(display);
>+}
>+
>+EGLConfigHelper::~EGLConfigHelper()
>+{
>+}
>+
>+PlatformDisplay EGLConfigHelper::display()
>+{
>+    return m_sharedDisplay->sharedEGLDisplay();
>+}
>+
>+EGLConfig EGLConfigHelper::pBufferContextConfig()
>+{
>+    if (!m_pbufferfbConfig) {
>+        configAttributeList[13] = EGL_PIXMAP_BIT;
>+        m_pbufferfbConfig = createConfig(configAttributeList);
>+    }
>+
>+    return m_pbufferfbConfig;
>+}
>+
>+EGLConfig EGLConfigHelper::surfaceContextConfig()
>+{
>+    if (!m_surfaceContextfbConfig) {
>+        configAttributeList[13] = EGL_WINDOW_BIT;
>+        m_surfaceContextfbConfig = createConfig(configAttributeList);
>+    }
>+
>+    return m_surfaceContextfbConfig;
>+}
>+
>+EGLint EGLConfigHelper::nativeVisualId(const EGLConfig& config)
>+{
>+    if (display() == EGL_NO_DISPLAY)
>+        return -1;
>+
>+    EGLint eglValue = 0;
>+    eglGetConfigAttrib(display(), config, EGL_NATIVE_VISUAL_ID, &eglValue);
>+
>+    return eglValue;
>+}
>+
>+void EGLConfigHelper::reset()
>+{
>+    m_surfaceContextfbConfig = 0;
>+    m_pbufferfbConfig = 0;
>+}
>+
>+EGLConfig EGLConfigHelper::createConfig(const int attributes[])
>+{
>+    if (display() == EGL_NO_DISPLAY)
>+        return 0;
>+
>+    int numConfigs;
>+    EGLConfig rightConfig = 0;
>+
>+    if (!eglChooseConfig(display(), attributes, &rightConfig, 1, &numConfigs))
>+        LOG_ERROR("Failed to get supported configirations.\n");
>+
>+    if (numConfigs != 1) {
>+        LOG_ERROR("EGLChooseConfig didn't return exactly one config but (%d).\n", numConfigs);
>+        rightConfig = 0;
>+    }
>+
>+    return rightConfig;
>+}
>+
>+}
>+
>+#endif
>diff --git Source/WebCore/platform/graphics/surfaces/egl/EGLConfigHelper.h Source/WebCore/platform/graphics/surfaces/egl/EGLConfigHelper.h
>new file mode 100644
>index 0000000..4f86ce9
>--- /dev/null
>+++ Source/WebCore/platform/graphics/surfaces/egl/EGLConfigHelper.h
>@@ -0,0 +1,92 @@
>+/*
>+ * Copyright (C) 2012 Intel Corporation. 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.
>+ */
>+
>+#ifndef EGLConfigHelper_h
>+#define EGLConfigHelper_h
>+
>+#if USE(EGL)
>+
>+#include <opengl/GLDefs.h>
>+#include <wtf/Noncopyable.h>
>+#include <wtf/PassRefPtr.h>
>+#include <wtf/RefCounted.h>
>+#include <wtf/RefPtr.h>
>+
>+namespace WebCore {
>+
>+typedef Display NativeSharedDisplay;
>+
>+class SharedEGLDisplay : public WTF::RefCountedBase {
>+    WTF_MAKE_NONCOPYABLE(SharedEGLDisplay);
>+
>+public:
>+    static PassRefPtr<SharedEGLDisplay> create(NativeSharedDisplay* display)
>+    {
>+        if (!m_staticSharedEGLDisplay)
>+            m_staticSharedEGLDisplay = new SharedEGLDisplay(display);
>+        else
>+            m_staticSharedEGLDisplay->ref();
>+
>+        return adoptRef(m_staticSharedEGLDisplay);
>+    }
>+
>+    void deref();
>+    EGLDisplay sharedEGLDisplay();
>+
>+protected:
>+    SharedEGLDisplay(NativeSharedDisplay*);
>+    void cleanup();
>+    virtual ~SharedEGLDisplay();
>+
>+    static SharedEGLDisplay* m_staticSharedEGLDisplay;
>+    EGLDisplay m_eglDisplay;
>+};
>+
>+class EGLConfigHelper {
>+    WTF_MAKE_NONCOPYABLE(EGLConfigHelper);
>+
>+public:
>+    EGLConfigHelper(NativeSharedDisplay* = 0);
>+    virtual ~EGLConfigHelper();
>+    PlatformDisplay display();
>+    virtual EGLConfig pBufferContextConfig();
>+    virtual EGLConfig surfaceContextConfig();
>+    EGLint nativeVisualId(const EGLConfig&);
>+    void reset();
>+
>+private:
>+    EGLConfig createConfig(const int attributes[]);
>+
>+protected:
>+    EGLConfig m_pbufferfbConfig;
>+    EGLConfig m_surfaceContextfbConfig;
>+    RefPtr<SharedEGLDisplay> m_sharedDisplay;
>+};
>+
>+}
>+
>+#endif
>+
>+#endif
>diff --git Source/WebCore/platform/graphics/surfaces/egl/EGLContext.cpp Source/WebCore/platform/graphics/surfaces/egl/EGLContext.cpp
>new file mode 100644
>index 0000000..567d738
>--- /dev/null
>+++ Source/WebCore/platform/graphics/surfaces/egl/EGLContext.cpp
>@@ -0,0 +1,177 @@
>+/*
>+ * Copyright (C) 2012 Intel Corporation. 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 "EGLContext.h"
>+
>+#if USE(EGL)
>+
>+#include <wtf/text/WTFString.h>
>+
>+#if HAVE(GLX)
>+#include <GL/glx.h>
>+#endif
>+
>+namespace WebCore {
>+
>+static const EGLint contextAttributes[] = {
>+#if USE(OPENGL_ES_2)
>+    EGL_CONTEXT_CLIENT_VERSION, 2,
>+#endif
>+    EGL_NONE
>+};
>+
>+static const EGLint contextRobustnessAttributes[] = {
>+#if USE(OPENGL_ES_2)
>+    EGL_CONTEXT_CLIENT_VERSION, 2,
>+#endif
>+    EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_EXT,
>+    EGL_LOSE_CONTEXT_ON_RESET_EXT,
>+    EGL_NONE
>+};
>+
>+static bool isRobustnessExtSupported(EGLDisplay display)
>+{
>+    static bool didQueryForRobustnessExtension = false;
>+    static bool isRobustnessExtensionSupported = false;
>+
>+    if (!didQueryForRobustnessExtension) {
>+        didQueryForRobustnessExtension = true;
>+        String supportedExtensions = reinterpret_cast<const char*>(eglQueryString(display, EGL_EXTENSIONS));
>+
>+        if (!supportedExtensions.isEmpty()) {
>+            supportedExtensions.append(" ");
>+            isRobustnessExtensionSupported = supportedExtensions.contains("EGL_EXT_create_context_robustness ");
>+        }
>+    }
>+
>+    return isRobustnessExtensionSupported;
>+}
>+
>+EGLCurrentContextWrapper::EGLCurrentContextWrapper()
>+    : GLPlatformContext()
>+{
>+}
>+
>+// FIXME: This is a temporary workaround until we are able to build evas with EGL support.
>+PlatformContext EGLCurrentContextWrapper::handle() const
>+{
>+    return glXGetCurrentContext();
>+}
>+
>+EGLOffScreenContext::EGLOffScreenContext()
>+    : GLPlatformContext()
>+    , m_display(0)
>+{
>+}
>+
>+bool EGLOffScreenContext::initialize(GLPlatformSurface* surface)
>+{
>+    if (!surface)
>+        return false;
>+
>+    if (!eglBindAPI(eglAPIVersion)) {
>+        LOG_ERROR("Failed to set EGL API(%d).\n", eglGetError());
>+        return false;
>+    }
>+
>+    m_display = surface->sharedDisplay();
>+    if (!m_display)
>+        return false;
>+
>+    EGLConfig config = surface->configuration();
>+    if (!config)
>+        return false;
>+
>+    if (config) {
>+        if (isRobustnessExtSupported(m_display))
>+            m_contextHandle = eglCreateContext(m_display, config, EGL_NO_CONTEXT, contextRobustnessAttributes);
>+
>+        if (m_contextHandle != EGL_NO_CONTEXT)
>+            m_resetLostContext = true;
>+        else
>+            m_contextHandle = eglCreateContext(m_display, config, EGL_NO_CONTEXT, contextAttributes);
>+
>+        if (m_contextHandle != EGL_NO_CONTEXT)
>+            return true;
>+    }
>+
>+    return false;
>+}
>+
>+EGLOffScreenContext::~EGLOffScreenContext()
>+{
>+}
>+
>+bool EGLOffScreenContext::isCurrentContext() const
>+{
>+    return m_contextHandle == eglGetCurrentContext();
>+}
>+
>+bool EGLOffScreenContext::platformMakeCurrent(GLPlatformSurface* surface)
>+{
>+    if (!eglBindAPI(eglAPIVersion)) {
>+        LOG_ERROR("Failed to set EGL API(%d).\n", eglGetError());
>+        return false;
>+    }
>+
>+    if (!eglMakeCurrent(m_display, surface->drawable(), surface->drawable(), m_contextHandle)) {
>+        LOG_ERROR("Failed to make context current.(%d).\n", eglGetError());
>+
>+        if (m_resetLostContext && eglGetError() == EGL_CONTEXT_LOST) {
>+            LOG_ERROR("Lost current context.\n");
>+            m_contextLost = true;
>+        }
>+
>+        return false;
>+    }
>+
>+    return true;
>+}
>+
>+void EGLOffScreenContext::platformReleaseCurrent()
>+{
>+    eglMakeCurrent(m_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
>+}
>+
>+void EGLOffScreenContext::freeResources()
>+{
>+    if (m_contextHandle == EGL_NO_CONTEXT)
>+        return;
>+
>+    eglDestroyContext(m_display, m_contextHandle);
>+    m_contextHandle = EGL_NO_CONTEXT;
>+    m_display = 0;
>+}
>+
>+void EGLOffScreenContext::destroy()
>+{
>+    GLPlatformContext::destroy();
>+    freeResources();
>+}
>+
>+}
>+
>+#endif
>diff --git Source/WebCore/platform/graphics/surfaces/egl/EGLContext.h Source/WebCore/platform/graphics/surfaces/egl/EGLContext.h
>new file mode 100644
>index 0000000..28a322e
>--- /dev/null
>+++ Source/WebCore/platform/graphics/surfaces/egl/EGLContext.h
>@@ -0,0 +1,65 @@
>+/*
>+ * Copyright (C) 2012 Intel Corporation. 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.
>+ */
>+
>+#ifndef EGLContext_h
>+#define EGLContext_h
>+
>+#if USE(EGL)
>+
>+#include "GLPlatformContext.h"
>+
>+namespace WebCore {
>+
>+class EGLCurrentContextWrapper : public GLPlatformContext {
>+    WTF_MAKE_NONCOPYABLE(EGLCurrentContextWrapper);
>+
>+public:
>+    EGLCurrentContextWrapper();
>+    PlatformContext handle() const OVERRIDE;
>+    virtual ~EGLCurrentContextWrapper() { }
>+};
>+
>+class EGLOffScreenContext : public GLPlatformContext {
>+    WTF_MAKE_NONCOPYABLE(EGLOffScreenContext);
>+
>+public:
>+    EGLOffScreenContext();
>+    virtual ~EGLOffScreenContext();
>+    bool initialize(GLPlatformSurface*) OVERRIDE;
>+    bool platformMakeCurrent(GLPlatformSurface*) OVERRIDE;
>+    void platformReleaseCurrent() OVERRIDE;
>+    void destroy() OVERRIDE;
>+    bool isCurrentContext() const OVERRIDE;
>+
>+private:
>+    void freeResources();
>+    EGLDisplay m_display;
>+};
>+
>+}
>+
>+#endif
>+
>+#endif
>diff --git Source/WebCore/platform/graphics/surfaces/egl/EGLSurface.cpp Source/WebCore/platform/graphics/surfaces/egl/EGLSurface.cpp
>new file mode 100644
>index 0000000..1934480
>--- /dev/null
>+++ Source/WebCore/platform/graphics/surfaces/egl/EGLSurface.cpp
>@@ -0,0 +1,142 @@
>+/*
>+ * Copyright (C) 2012 Intel Corporation. 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 "EGLSurface.h"
>+
>+#if USE(EGL) && USE(GRAPHICS_SURFACE)
>+
>+namespace WebCore {
>+
>+EGLWindowTransportSurface::EGLWindowTransportSurface()
>+    : GLPlatformSurface()
>+{
>+    m_nativeResource = adoptPtr(new NativeOffScreenWindow());
>+    m_eglConfigHelper = adoptPtr(new EGLConfigHelper(m_nativeResource->nativeSharedDisplay()));
>+    m_sharedDisplay = m_eglConfigHelper->display();
>+
>+    if (m_sharedDisplay == EGL_NO_DISPLAY) {
>+        m_eglConfigHelper = nullptr;
>+        m_nativeResource = nullptr;
>+        return;
>+    }
>+
>+    EGLConfig config = m_eglConfigHelper->surfaceContextConfig();
>+
>+    if (!config) {
>+        destroy();
>+        return;
>+    }
>+
>+    EGLint visualId = m_eglConfigHelper->nativeVisualId(config);
>+
>+    if (visualId == -1) {
>+        destroy();
>+        return;
>+    }
>+
>+    if (!m_nativeResource->setVisualId(visualId)) {
>+        destroy();
>+        return;
>+    }
>+
>+    m_nativeResource->createOffscreenWindow(&m_bufferHandle);
>+
>+    if (!m_bufferHandle) {
>+        destroy();
>+        return;
>+    }
>+
>+    m_drawable = eglCreateWindowSurface(m_sharedDisplay, m_eglConfigHelper->surfaceContextConfig(), (EGLNativeWindowType)m_bufferHandle, 0);
>+
>+    if (m_drawable == EGL_NO_SURFACE) {
>+        LOG_ERROR("Failed to create EGL surface(%d).\n", eglGetError());
>+        destroy();
>+    }
>+}
>+
>+EGLWindowTransportSurface::~EGLWindowTransportSurface()
>+{
>+}
>+
>+PlatformSurfaceConfig EGLWindowTransportSurface::configuration()
>+{
>+    return m_eglConfigHelper->surfaceContextConfig();
>+}
>+
>+void EGLWindowTransportSurface::swapBuffers()
>+{
>+    if (!m_drawable)
>+        return;
>+
>+    EGLBoolean success = eglBindAPI(eglAPIVersion);
>+
>+    if (success != EGL_TRUE) {
>+        LOG_ERROR("Failed to set EGL API(%d).\n", eglGetError());
>+        destroy();
>+    }
>+
>+    success = eglSwapBuffers(m_sharedDisplay, m_drawable);
>+
>+    if (success != EGL_TRUE) {
>+        LOG_ERROR("Failed to SwapBuffers(%d).\n", eglGetError());
>+        destroy();
>+    }
>+}
>+
>+void EGLWindowTransportSurface::destroy()
>+{
>+    m_nativeResource->destroyWindow(m_bufferHandle);
>+    freeEGLResources();
>+    m_nativeResource = nullptr;
>+    m_eglConfigHelper = nullptr;
>+    m_bufferHandle = 0;
>+}
>+
>+void EGLWindowTransportSurface::freeEGLResources()
>+{
>+    if (m_drawable == EGL_NO_SURFACE || m_sharedDisplay == EGL_NO_DISPLAY)
>+        return;
>+
>+    EGLBoolean eglResult = eglBindAPI(eglAPIVersion);
>+
>+    if (eglResult != EGL_TRUE) {
>+        LOG_ERROR("Failed to set EGL API(%d).\n", eglGetError());
>+        return;
>+    }
>+
>+    eglDestroySurface(m_sharedDisplay, m_drawable);
>+    m_drawable = EGL_NO_SURFACE;
>+}
>+
>+void EGLWindowTransportSurface::setGeometry(const IntRect& newRect)
>+{
>+    GLPlatformSurface::setGeometry(newRect);
>+    m_nativeResource->reSizeWindow(newRect, m_bufferHandle);
>+}
>+
>+}
>+
>+#endif
>diff --git Source/WebCore/platform/graphics/surfaces/egl/EGLSurface.h Source/WebCore/platform/graphics/surfaces/egl/EGLSurface.h
>new file mode 100644
>index 0000000..6b6924b
>--- /dev/null
>+++ Source/WebCore/platform/graphics/surfaces/egl/EGLSurface.h
>@@ -0,0 +1,64 @@
>+/*
>+ * Copyright (C) 2012 Intel Corporation. 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.
>+ */
>+
>+#ifndef EGLSurface_h
>+#define EGLSurface_h
>+
>+#if USE(EGL) && USE(GRAPHICS_SURFACE)
>+
>+#include "EGLConfigHelper.h"
>+#include "GLPlatformSurface.h"
>+
>+#include <glx/X11WindowResources.h>
>+#include <wtf/Noncopyable.h>
>+#include <wtf/PassOwnPtr.h>
>+
>+namespace WebCore {
>+
>+typedef X11OffScreenWindow NativeOffScreenWindow;
>+
>+// Contents of the surface are backed by native window.
>+class EGLWindowTransportSurface : public GLPlatformSurface {
>+    WTF_MAKE_NONCOPYABLE(EGLWindowTransportSurface);
>+
>+public:
>+    EGLWindowTransportSurface();
>+    virtual ~EGLWindowTransportSurface();
>+    PlatformSurfaceConfig configuration() OVERRIDE;
>+    void setGeometry(const IntRect& newRect) OVERRIDE;
>+    void swapBuffers() OVERRIDE;
>+    void destroy() OVERRIDE;
>+
>+private:
>+    void freeEGLResources();
>+    OwnPtr<NativeOffScreenWindow> m_nativeResource;
>+    OwnPtr<EGLConfigHelper> m_eglConfigHelper;
>+};
>+
>+}
>+
>+#endif
>+
>+#endif
>diff --git Source/WebCore/platform/graphics/surfaces/glx/GLXSurface.cpp Source/WebCore/platform/graphics/surfaces/glx/GLXSurface.cpp
>index 96a0ab9..c9cd8d2 100644
>--- Source/WebCore/platform/graphics/surfaces/glx/GLXSurface.cpp
>+++ Source/WebCore/platform/graphics/surfaces/glx/GLXSurface.cpp
>@@ -36,7 +36,7 @@ static const int pbufferAttributes[] = { GLX_PBUFFER_WIDTH, 1, GLX_PBUFFER_HEIGH
> GLXTransportSurface::GLXTransportSurface()
>     : X11OffScreenWindow()
> {
>-    createOffscreenWindow();
>+    createOffscreenWindow(&m_bufferHandle);
>     m_drawable = m_bufferHandle;
> }
> 
>@@ -49,6 +49,12 @@ PlatformSurfaceConfig GLXTransportSurface::configuration()
>     return m_sharedResources->surfaceContextConfig();
> }
> 
>+void GLXTransportSurface::setGeometry(const IntRect& newRect)
>+{
>+    GLPlatformSurface::setGeometry(newRect);
>+    reSizeWindow(newRect, m_drawable);
>+}
>+
> void GLXTransportSurface::swapBuffers()
> {
>     if (!m_drawable)
>@@ -66,7 +72,7 @@ void GLXTransportSurface::swapBuffers()
> 
> void GLXTransportSurface::destroy()
> {
>-    destroyWindow();
>+    destroyWindow(m_bufferHandle);
>     m_bufferHandle = 0;
> }
> 
>diff --git Source/WebCore/platform/graphics/surfaces/glx/GLXSurface.h Source/WebCore/platform/graphics/surfaces/glx/GLXSurface.h
>index 4e87685..0d84c34 100644
>--- Source/WebCore/platform/graphics/surfaces/glx/GLXSurface.h
>+++ Source/WebCore/platform/graphics/surfaces/glx/GLXSurface.h
>@@ -43,6 +43,7 @@ public:
>     virtual ~GLXTransportSurface();
>     PlatformSurfaceConfig configuration();
>     void swapBuffers();
>+    void setGeometry(const IntRect&);
>     void destroy();
> 
> private:
>diff --git Source/WebCore/platform/graphics/surfaces/glx/GLXWindowResources.h Source/WebCore/platform/graphics/surfaces/glx/GLXWindowResources.h
>index c173557..cbfcc39 100644
>--- Source/WebCore/platform/graphics/surfaces/glx/GLXWindowResources.h
>+++ Source/WebCore/platform/graphics/surfaces/glx/GLXWindowResources.h
>@@ -51,6 +51,14 @@ public:
>         return SharedX11Resources::x11Display();
>     }
> 
>+    XVisualInfo* visualInfo()
>+    {
>+        if (!m_VisualInfo)
>+            surfaceContextConfig();
>+
>+        return m_VisualInfo;
>+    }
>+
>     virtual GLXFBConfig pBufferContextConfig()
>     {
>         if (!m_pbufferfbConfig) {
>@@ -98,11 +106,12 @@ public:
>         return m_surfaceContextfbConfig;
>     }
> 
>-private:
>+protected:
>     SharedGLXResources()
>         : SharedX11Resources()
>         , m_pbufferfbConfig(0)
>         , m_surfaceContextfbConfig(0)
>+        , m_VisualInfo(0)
>     {
>     }
> 
>@@ -160,10 +169,16 @@ private:
> 
>         if (m_surfaceContextfbConfig)
>             m_surfaceContextfbConfig = 0;
>+
>+        if (m_VisualInfo) {
>+            XFree(m_VisualInfo);
>+            m_VisualInfo = 0;
>+        }
>     }
> 
>     GLXFBConfig m_pbufferfbConfig;
>     GLXFBConfig m_surfaceContextfbConfig;
>+    XVisualInfo* m_VisualInfo;
> };
> 
> }
>diff --git Source/WebCore/platform/graphics/surfaces/glx/X11WindowResources.cpp Source/WebCore/platform/graphics/surfaces/glx/X11WindowResources.cpp
>index 60293e7..cab22fb 100644
>--- Source/WebCore/platform/graphics/surfaces/glx/X11WindowResources.cpp
>+++ Source/WebCore/platform/graphics/surfaces/glx/X11WindowResources.cpp
>@@ -28,7 +28,9 @@
> 
> #if USE(ACCELERATED_COMPOSITING)
> 
>+#if USE(GLX)
> #include "GLXWindowResources.h"
>+#endif
> 
> namespace WebCore {
> 
>@@ -37,26 +39,30 @@ PlatformSharedResources* SharedX11Resources::m_staticSharedResource = 0;
> X11OffScreenWindow::X11OffScreenWindow()
>     : GLPlatformSurface()
>     , m_sharedResources(0)
>+    , m_configVisualInfo(0)
> {
>     m_sharedResources = PlatformSharedResources::create();
> 
>     if (!m_sharedResources)
>         return;
> 
>-    m_sharedDisplay = m_sharedResources->nativeDisplay();
>+    m_sharedDisplay = m_sharedResources->x11Display();
> }
> 
> X11OffScreenWindow::~X11OffScreenWindow()
> {
>+    if (m_configVisualInfo) {
>+        XFree(m_configVisualInfo);
>+        m_configVisualInfo = 0;
>+    }
> }
> 
>-void X11OffScreenWindow::setGeometry(const IntRect& newRect)
>+void X11OffScreenWindow::reSizeWindow(const IntRect& newRect, PlatformBufferHandle windowId)
> {
>-    GLPlatformSurface::setGeometry(newRect);
>-    XResizeWindow(m_sharedResources->x11Display(), m_bufferHandle, newRect.width(), newRect.height());
>+    XResizeWindow(m_sharedResources->x11Display(), windowId, newRect.width(), newRect.height());
> }
> 
>-void X11OffScreenWindow::createOffscreenWindow()
>+void X11OffScreenWindow::createOffscreenWindow(PlatformBufferHandle* handleId)
> {
>     if (!m_sharedResources)
>         return;
>@@ -65,14 +71,11 @@ void X11OffScreenWindow::createOffscreenWindow()
>     if (!display)
>         return;
> 
>-    PlatformSurfaceConfig config = m_sharedResources->surfaceContextConfig();
>-
>-    if (!config) {
>-        LOG_ERROR("Failed to retrieve a valid configiration.");
>-        return;
>-    }
>-
>+#if USE(GLX)
>     XVisualInfo* visInfo = m_sharedResources->visualInfo();
>+#else
>+    XVisualInfo* visInfo = m_configVisualInfo;
>+#endif
> 
>     if (!visInfo) {
>         LOG_ERROR("Failed to find valid XVisual");
>@@ -88,24 +91,27 @@ void X11OffScreenWindow::createOffscreenWindow()
>     attribute.background_pixel = WhitePixel(display, 0);
>     attribute.border_pixel = BlackPixel(display, 0);
>     attribute.colormap = cmap;
>-    m_bufferHandle = XCreateWindow(display, xWindow, 0, 0, 1, 1, 0, visInfo->depth, InputOutput, visInfo->visual, CWBackPixel | CWBorderPixel | CWColormap, &attribute);
>+    PlatformBufferHandle tempHandleId;
>+    tempHandleId = XCreateWindow(display, xWindow, 0, 0, 1, 1, 0, visInfo->depth, InputOutput, visInfo->visual, CWBackPixel | CWBorderPixel | CWColormap, &attribute);
> 
>-    if (!m_bufferHandle) {
>+    if (!tempHandleId) {
>         LOG_ERROR("Failed to create offscreen window");
>         return;
>     }
> 
>-    XSetWindowBackgroundPixmap(display, m_bufferHandle, 0);
>-    XCompositeRedirectWindow(display, m_bufferHandle, CompositeRedirectManual);
>+    XSetWindowBackgroundPixmap(display, tempHandleId, 0);
>+    XCompositeRedirectWindow(display, tempHandleId, CompositeRedirectManual);
>+    *handleId = tempHandleId;
>+    m_bufferHandle = tempHandleId;
> 
>     if (m_sharedResources->isXRenderExtensionSupported())
>-        XMapWindow(display, m_bufferHandle);
>+        XMapWindow(display, tempHandleId);
> 
> }
> 
>-void X11OffScreenWindow::destroyWindow()
>+void X11OffScreenWindow::destroyWindow(PlatformBufferHandle windowId)
> {
>-    if (!m_bufferHandle)
>+    if (!windowId)
>         return;
> 
>     GLPlatformSurface::destroy();
>@@ -113,9 +119,67 @@ void X11OffScreenWindow::destroyWindow()
>     if (!display)
>         return;
> 
>-    XDestroyWindow(display, m_bufferHandle);
>-    m_bufferHandle = 0;
>+    XDestroyWindow(display, windowId);
>+}
>+
>+Display* X11OffScreenWindow::nativeSharedDisplay()
>+{
>+    return m_sharedResources->x11Display();
>+}
>+
>+#if USE(EGL)
>+bool X11OffScreenWindow::setVisualId(const EGLint id)
>+{
>+    VisualID visualId = static_cast<VisualID>(id);
>+
>+    if (!visualId)
>+        return false;
>+
>+    // EGL has suggested a visual id, so get the rest of the visual info for that id.
>+    XVisualInfo visualInfoTemplate;
>+    memset(&visualInfoTemplate, 0, sizeof(XVisualInfo));
>+    visualInfoTemplate.visualid = visualId;
>+
>+    XVisualInfo* chosenVisualInfo;
>+    int matchingCount = 0;
>+    chosenVisualInfo = XGetVisualInfo(m_sharedResources->x11Display(), VisualIDMask, &visualInfoTemplate, &matchingCount);
>+    if (chosenVisualInfo) {
>+#if USE(GRAPHICS_SURFACE)
>+        if (m_sharedResources->isXRenderExtensionSupported()) {
>+            XRenderPictFormat* format = XRenderFindVisualFormat(m_sharedResources->x11Display(), chosenVisualInfo->visual);
>+            if (format && format->direct.alphaMask > 0) {
>+                m_configVisualInfo = chosenVisualInfo;
>+                return true;
>+            }
>+        }
>+#endif
>+        if (chosenVisualInfo->depth == 32) {
>+            m_configVisualInfo = chosenVisualInfo;
>+            return true;
>+        }
>+    }
>+
>+    if (!m_configVisualInfo) {
>+        memset(&visualInfoTemplate, 0, sizeof(XVisualInfo));
>+        XVisualInfo* matchingVisuals;
>+        int matchingCount = 0;
>+
>+        visualInfoTemplate.depth = chosenVisualInfo->depth;
>+        matchingVisuals = XGetVisualInfo(m_sharedResources->x11Display(), VisualDepthMask, &visualInfoTemplate, &matchingCount);
>+
>+        if (matchingVisuals) {
>+            m_configVisualInfo = &matchingVisuals[0];
>+            XFree(matchingVisuals);
>+            return true;
>+        }
>+    }
>+
>+    if (!m_configVisualInfo)
>+        LOG_ERROR("Failed to retrieve XVisual Info.\n");
>+
>+    return false;
> }
>+#endif
> 
> }
> 
>diff --git Source/WebCore/platform/graphics/surfaces/glx/X11WindowResources.h Source/WebCore/platform/graphics/surfaces/glx/X11WindowResources.h
>index b25b2ac..9c080c3 100644
>--- Source/WebCore/platform/graphics/surfaces/glx/X11WindowResources.h
>+++ Source/WebCore/platform/graphics/surfaces/glx/X11WindowResources.h
>@@ -40,13 +40,30 @@
> 
> namespace WebCore {
> 
>+#if USE(GLX)
> class SharedGLXResources;
> typedef SharedGLXResources PlatformSharedResources;
>+#elif USE(EGL)
>+class SharedX11Resources;
>+typedef SharedX11Resources PlatformSharedResources;
>+#endif
> 
> class SharedX11Resources : public WTF::RefCountedBase {
>     WTF_MAKE_NONCOPYABLE(SharedX11Resources);
> 
> public:
>+#if USE(EGL)
>+    static PassRefPtr<PlatformSharedResources> create()
>+    {
>+        if (!m_staticSharedResource)
>+            m_staticSharedResource = new PlatformSharedResources();
>+        else
>+            m_staticSharedResource->ref();
>+
>+        return adoptRef(m_staticSharedResource);
>+    }
>+#endif
>+
>     void deref()
>     {
>         if (derefBase()) {
>@@ -94,29 +111,16 @@ public:
>         return m_window;
>     }
> 
>-    XVisualInfo* visualInfo()
>-    {
>-        if (!m_VisualInfo)
>-            surfaceContextConfig();
>-
>-        return m_VisualInfo;
>-    }
>-
>     bool isXRenderExtensionSupported()
>     {
>         return m_supportsXRenderExtension;
>     }
> 
>-    virtual PlatformSurfaceConfig pBufferContextConfig() = 0;
>-    virtual PlatformSurfaceConfig surfaceContextConfig() = 0;
>-    virtual PlatformDisplay nativeDisplay() = 0;
>-
> protected:
>     SharedX11Resources()
>         : m_supportsXRenderExtension(false)
>         , m_window(0)
>         , m_display(0)
>-        , m_VisualInfo(0)
>     {
>     }
> 
>@@ -131,11 +135,6 @@ protected:
>             m_window = 0;
>         }
> 
>-        if (m_VisualInfo) {
>-            XFree(m_VisualInfo);
>-            m_VisualInfo = 0;
>-        }
>-
>         XCloseDisplay(m_display);
>         m_display = 0;
>     }
>@@ -144,7 +143,6 @@ protected:
>     bool m_supportsXRenderExtension;
>     Window m_window;
>     Display* m_display;
>-    XVisualInfo* m_VisualInfo;
> };
> 
> class X11OffScreenWindow : public GLPlatformSurface {
>@@ -153,12 +151,17 @@ class X11OffScreenWindow : public GLPlatformSurface {
> public:
>     X11OffScreenWindow();
>     virtual ~X11OffScreenWindow();
>-    void setGeometry(const IntRect&);
>-    void createOffscreenWindow();
>-    void destroyWindow();
>+    void createOffscreenWindow(PlatformBufferHandle*);
>+    void destroyWindow(PlatformBufferHandle);
>+    void reSizeWindow(const IntRect&, PlatformBufferHandle);
>+    Display* nativeSharedDisplay();
>+#if USE(EGL)
>+    bool setVisualId(const EGLint);
>+#endif
> 
> protected:
>     RefPtr<PlatformSharedResources> m_sharedResources;
>+    XVisualInfo* m_configVisualInfo;
> };
> 
> }
>diff --git Source/cmake/OptionsEfl.cmake Source/cmake/OptionsEfl.cmake
>index 800a709..fe202ef 100644
>--- Source/cmake/OptionsEfl.cmake
>+++ Source/cmake/OptionsEfl.cmake
>@@ -175,12 +175,25 @@ if (ENABLE_WEBGL OR WTF_USE_TILED_BACKING_STORE)
> 
>     if (OPENGLX_FOUND)
>         add_definitions(-DHAVE_GLX)
>-        add_definitions(-DWTF_USE_GLX=1)
>+    endif ()
>+
>+    option(ENABLE_EGL ON)
> 
>-        if (X11_Xcomposite_FOUND AND X11_Xrender_FOUND)
>-           set(USE_GRAPHICS_SURFACE 1)
>-        endif ()
>+    if (ENABLE_EGL)
>+        find_package(EGL REQUIRED)
>     endif ()
>+
>+    if (EGL_FOUND)
>+        set(WTF_USE_EGL 1)
>+        add_definitions(-DWTF_USE_EGL=1)
>+     elseif (OPENGLX_FOUND)
>+         set(WTF_USE_GLX 1)
>+         add_definitions(-DWTF_USE_GLX=1)
>+    endif ()
>+
>+     if ((OPENGLX_FOUND OR EGL_FOUND) AND X11_Xcomposite_FOUND AND X11_Xrender_FOUND)
>+         set(USE_GRAPHICS_SURFACE 1)
>+     endif ()
> endif ()
> 
> if (ENABLE_INSPECTOR)

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Attachments on bug 105602: 180545 | 180553 | 180557 | 180586 | 180602 | 180633 | 180664 | 180772 | 180806 | 180814