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kc3-lang/angle/src/libGLESv2/entry_points_egl.cpp

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  • Author : Geoff Lang
    Date : 2016-04-20 10:42:34
    Hash : 97073d12
    Message : Implement CHROMIUM_copy_texture for D3D11. BUG=angleproject:1356 Change-Id: I70246762411dbeeb3e291e317854139a68d80070 Reviewed-on: https://chromium-review.googlesource.com/339434 Reviewed-by: Corentin Wallez <cwallez@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org>

  • src/libGLESv2/entry_points_egl.cpp
  • //
    // Copyright(c) 2014 The ANGLE Project Authors. All rights reserved.
    // Use of this source code is governed by a BSD-style license that can be
    // found in the LICENSE file.
    //
    
    // entry_points_egl.cpp : Implements the EGL entry points.
    
    #include "libGLESv2/entry_points_egl.h"
    #include "libGLESv2/entry_points_egl_ext.h"
    #include "libGLESv2/entry_points_gles_2_0.h"
    #include "libGLESv2/entry_points_gles_2_0_ext.h"
    #include "libGLESv2/entry_points_gles_3_0.h"
    #include "libGLESv2/entry_points_gles_3_1.h"
    #include "libGLESv2/global_state.h"
    
    #include "libANGLE/Context.h"
    #include "libANGLE/Display.h"
    #include "libANGLE/Texture.h"
    #include "libANGLE/Surface.h"
    #include "libANGLE/validationEGL.h"
    
    #include "common/debug.h"
    #include "common/version.h"
    
    #include <EGL/eglext.h>
    
    namespace egl
    {
    
    // EGL 1.0
    EGLint EGLAPIENTRY GetError(void)
    {
        EVENT("()");
    
        EGLint error = GetGlobalError();
        SetGlobalError(Error(EGL_SUCCESS));
        return error;
    }
    
    EGLDisplay EGLAPIENTRY GetDisplay(EGLNativeDisplayType display_id)
    {
        EVENT("(EGLNativeDisplayType display_id = 0x%0.8p)", display_id);
    
        return Display::GetDisplayFromAttribs(reinterpret_cast<void *>(display_id), AttributeMap());
    }
    
    EGLBoolean EGLAPIENTRY Initialize(EGLDisplay dpy, EGLint *major, EGLint *minor)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLint *major = 0x%0.8p, EGLint *minor = 0x%0.8p)",
              dpy, major, minor);
    
        Display *display = static_cast<Display *>(dpy);
        if (dpy == EGL_NO_DISPLAY || !Display::isValidDisplay(display))
        {
            SetGlobalError(Error(EGL_BAD_DISPLAY));
            return EGL_FALSE;
        }
    
        Error error = display->initialize();
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_FALSE;
        }
    
        if (major) *major = 1;
        if (minor) *minor = 4;
    
        SetGlobalError(Error(EGL_SUCCESS));
        return EGL_TRUE;
    }
    
    EGLBoolean EGLAPIENTRY Terminate(EGLDisplay dpy)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p)", dpy);
    
        Display *display = static_cast<Display *>(dpy);
        if (dpy == EGL_NO_DISPLAY || !Display::isValidDisplay(display))
        {
            SetGlobalError(Error(EGL_BAD_DISPLAY));
            return EGL_FALSE;
        }
    
        gl::Context *context = GetGlobalContext();
    
        if (display->isValidContext(context))
        {
            SetGlobalContext(NULL);
            SetGlobalDisplay(NULL);
        }
    
        display->terminate();
    
        SetGlobalError(Error(EGL_SUCCESS));
        return EGL_TRUE;
    }
    
    const char *EGLAPIENTRY QueryString(EGLDisplay dpy, EGLint name)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLint name = %d)", dpy, name);
    
        Display *display = static_cast<Display*>(dpy);
        if (!(display == EGL_NO_DISPLAY && name == EGL_EXTENSIONS))
        {
            Error error = ValidateDisplay(display);
            if (error.isError())
            {
                SetGlobalError(error);
                return NULL;
            }
        }
    
        const char *result;
        switch (name)
        {
          case EGL_CLIENT_APIS:
            result = "OpenGL_ES";
            break;
          case EGL_EXTENSIONS:
            if (display == EGL_NO_DISPLAY)
            {
                result = Display::getClientExtensionString().c_str();
            }
            else
            {
                result = display->getExtensionString().c_str();
            }
            break;
          case EGL_VENDOR:
            result = display->getVendorString().c_str();
            break;
          case EGL_VERSION:
            result = "1.4 (ANGLE " ANGLE_VERSION_STRING ")";
            break;
          default:
            SetGlobalError(Error(EGL_BAD_PARAMETER));
            return NULL;
        }
    
        SetGlobalError(Error(EGL_SUCCESS));
        return result;
    }
    
    EGLBoolean EGLAPIENTRY GetConfigs(EGLDisplay dpy, EGLConfig *configs, EGLint config_size, EGLint *num_config)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLConfig *configs = 0x%0.8p, "
              "EGLint config_size = %d, EGLint *num_config = 0x%0.8p)",
              dpy, configs, config_size, num_config);
    
        Display *display = static_cast<Display*>(dpy);
    
        Error error = ValidateDisplay(display);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_FALSE;
        }
    
        if (!num_config)
        {
            SetGlobalError(Error(EGL_BAD_PARAMETER));
            return EGL_FALSE;
        }
    
        std::vector<const Config*> filteredConfigs = display->getConfigs(AttributeMap());
        if (configs)
        {
            filteredConfigs.resize(std::min<size_t>(filteredConfigs.size(), config_size));
            for (size_t i = 0; i < filteredConfigs.size(); i++)
            {
                configs[i] = const_cast<Config*>(filteredConfigs[i]);
            }
        }
        *num_config = static_cast<EGLint>(filteredConfigs.size());
    
        SetGlobalError(Error(EGL_SUCCESS));
        return EGL_TRUE;
    }
    
    EGLBoolean EGLAPIENTRY ChooseConfig(EGLDisplay dpy, const EGLint *attrib_list, EGLConfig *configs, EGLint config_size, EGLint *num_config)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, const EGLint *attrib_list = 0x%0.8p, "
              "EGLConfig *configs = 0x%0.8p, EGLint config_size = %d, EGLint *num_config = 0x%0.8p)",
              dpy, attrib_list, configs, config_size, num_config);
    
        Display *display = static_cast<Display*>(dpy);
    
        Error error = ValidateDisplay(display);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_FALSE;
        }
    
        if (!num_config)
        {
            SetGlobalError(Error(EGL_BAD_PARAMETER));
            return EGL_FALSE;
        }
    
        std::vector<const Config *> filteredConfigs =
            display->getConfigs(AttributeMap::CreateFromIntArray(attrib_list));
        if (configs)
        {
            filteredConfigs.resize(std::min<size_t>(filteredConfigs.size(), config_size));
            for (size_t i = 0; i < filteredConfigs.size(); i++)
            {
                configs[i] = const_cast<Config*>(filteredConfigs[i]);
            }
        }
        *num_config = static_cast<EGLint>(filteredConfigs.size());
    
        SetGlobalError(Error(EGL_SUCCESS));
        return EGL_TRUE;
    }
    
    EGLBoolean EGLAPIENTRY GetConfigAttrib(EGLDisplay dpy, EGLConfig config, EGLint attribute, EGLint *value)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLConfig config = 0x%0.8p, EGLint attribute = %d, EGLint *value = 0x%0.8p)",
              dpy, config, attribute, value);
    
        Display *display = static_cast<Display*>(dpy);
        Config *configuration = static_cast<Config*>(config);
    
        Error error = ValidateConfig(display, configuration);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_FALSE;
        }
    
        if (!display->getConfigAttrib(configuration, attribute, value))
        {
            SetGlobalError(Error(EGL_BAD_ATTRIBUTE));
            return EGL_FALSE;
        }
    
        SetGlobalError(Error(EGL_SUCCESS));
        return EGL_TRUE;
    }
    
    EGLSurface EGLAPIENTRY CreateWindowSurface(EGLDisplay dpy, EGLConfig config, EGLNativeWindowType win, const EGLint *attrib_list)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLConfig config = 0x%0.8p, EGLNativeWindowType win = 0x%0.8p, "
              "const EGLint *attrib_list = 0x%0.8p)", dpy, config, win, attrib_list);
    
        Display *display = static_cast<Display*>(dpy);
        Config *configuration = static_cast<Config*>(config);
        AttributeMap attributes = AttributeMap::CreateFromIntArray(attrib_list);
    
        Error error = ValidateCreateWindowSurface(display, configuration, win, attributes);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_NO_SURFACE;
        }
    
        egl::Surface *surface = nullptr;
        error = display->createWindowSurface(configuration, win, attributes, &surface);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_NO_SURFACE;
        }
    
        return static_cast<EGLSurface>(surface);
    }
    
    EGLSurface EGLAPIENTRY CreatePbufferSurface(EGLDisplay dpy, EGLConfig config, const EGLint *attrib_list)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLConfig config = 0x%0.8p, const EGLint *attrib_list = 0x%0.8p)",
              dpy, config, attrib_list);
    
        Display *display = static_cast<Display*>(dpy);
        Config *configuration = static_cast<Config*>(config);
        AttributeMap attributes = AttributeMap::CreateFromIntArray(attrib_list);
    
        Error error = ValidateCreatePbufferSurface(display, configuration, attributes);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_NO_SURFACE;
        }
    
        egl::Surface *surface = nullptr;
        error = display->createPbufferSurface(configuration, attributes, &surface);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_NO_SURFACE;
        }
    
        return static_cast<EGLSurface>(surface);
    }
    
    EGLSurface EGLAPIENTRY CreatePixmapSurface(EGLDisplay dpy, EGLConfig config, EGLNativePixmapType pixmap, const EGLint *attrib_list)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLConfig config = 0x%0.8p, EGLNativePixmapType pixmap = 0x%0.8p, "
              "const EGLint *attrib_list = 0x%0.8p)", dpy, config, pixmap, attrib_list);
    
        Display *display = static_cast<Display*>(dpy);
        Config *configuration = static_cast<Config*>(config);
    
        Error error = ValidateConfig(display, configuration);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_NO_SURFACE;
        }
    
        UNIMPLEMENTED();   // FIXME
    
        SetGlobalError(Error(EGL_SUCCESS));
        return EGL_NO_SURFACE;
    }
    
    EGLBoolean EGLAPIENTRY DestroySurface(EGLDisplay dpy, EGLSurface surface)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLSurface surface = 0x%0.8p)", dpy, surface);
    
        Display *display = static_cast<Display*>(dpy);
        Surface *eglSurface = static_cast<Surface*>(surface);
    
        Error error = ValidateSurface(display, eglSurface);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_FALSE;
        }
    
        if (surface == EGL_NO_SURFACE)
        {
            SetGlobalError(Error(EGL_BAD_SURFACE));
            return EGL_FALSE;
        }
    
        display->destroySurface((Surface*)surface);
    
        SetGlobalError(Error(EGL_SUCCESS));
        return EGL_TRUE;
    }
    
    EGLBoolean EGLAPIENTRY QuerySurface(EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint *value)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLSurface surface = 0x%0.8p, EGLint attribute = %d, EGLint *value = 0x%0.8p)",
              dpy, surface, attribute, value);
    
        Display *display = static_cast<Display*>(dpy);
        Surface *eglSurface = (Surface*)surface;
    
        Error error = ValidateSurface(display, eglSurface);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_FALSE;
        }
    
        if (surface == EGL_NO_SURFACE)
        {
            SetGlobalError(Error(EGL_BAD_SURFACE));
            return EGL_FALSE;
        }
    
        switch (attribute)
        {
          case EGL_VG_ALPHA_FORMAT:
            UNIMPLEMENTED();   // FIXME
            break;
          case EGL_VG_COLORSPACE:
            UNIMPLEMENTED();   // FIXME
            break;
          case EGL_CONFIG_ID:
            *value = eglSurface->getConfig()->configID;
            break;
          case EGL_HEIGHT:
            *value = eglSurface->getHeight();
            break;
          case EGL_HORIZONTAL_RESOLUTION:
            UNIMPLEMENTED();   // FIXME
            break;
          case EGL_LARGEST_PBUFFER:
            UNIMPLEMENTED();   // FIXME
            break;
          case EGL_MIPMAP_TEXTURE:
            UNIMPLEMENTED();   // FIXME
            break;
          case EGL_MIPMAP_LEVEL:
            UNIMPLEMENTED();   // FIXME
            break;
          case EGL_MULTISAMPLE_RESOLVE:
            UNIMPLEMENTED();   // FIXME
            break;
          case EGL_PIXEL_ASPECT_RATIO:
            *value = eglSurface->getPixelAspectRatio();
            break;
          case EGL_RENDER_BUFFER:
            *value = eglSurface->getRenderBuffer();
            break;
          case EGL_SWAP_BEHAVIOR:
            *value = eglSurface->getSwapBehavior();
            break;
          case EGL_TEXTURE_FORMAT:
            *value = eglSurface->getTextureFormat();
            break;
          case EGL_TEXTURE_TARGET:
            *value = eglSurface->getTextureTarget();
            break;
          case EGL_VERTICAL_RESOLUTION:
            UNIMPLEMENTED();   // FIXME
            break;
          case EGL_WIDTH:
            *value = eglSurface->getWidth();
            break;
          case EGL_POST_SUB_BUFFER_SUPPORTED_NV:
            if (!display->getExtensions().postSubBuffer)
            {
                SetGlobalError(Error(EGL_BAD_ATTRIBUTE));
                return EGL_FALSE;
            }
            *value = eglSurface->isPostSubBufferSupported();
            break;
          case EGL_FIXED_SIZE_ANGLE:
            if (!display->getExtensions().windowFixedSize)
            {
                SetGlobalError(Error(EGL_BAD_ATTRIBUTE));
                return EGL_FALSE;
            }
            *value = eglSurface->isFixedSize();
            break;
          case EGL_FLEXIBLE_SURFACE_COMPATIBILITY_SUPPORTED_ANGLE:
              if (!display->getExtensions().flexibleSurfaceCompatibility)
              {
                  SetGlobalError(
                      Error(EGL_BAD_ATTRIBUTE,
                            "EGL_FLEXIBLE_SURFACE_COMPATIBILITY_SUPPORTED_ANGLE cannot be used without "
                            "EGL_ANGLE_flexible_surface_compatibility support."));
                  return EGL_FALSE;
              }
              *value = eglSurface->flexibleSurfaceCompatibilityRequested();
              break;
          case EGL_SURFACE_ORIENTATION_ANGLE:
              if (!display->getExtensions().surfaceOrientation)
              {
                  SetGlobalError(Error(EGL_BAD_ATTRIBUTE,
                                       "EGL_SURFACE_ORIENTATION_ANGLE cannot be queried without "
                                       "EGL_ANGLE_surface_orientation support."));
                  return EGL_FALSE;
              }
              *value = eglSurface->getOrientation();
              break;
          case EGL_DIRECT_COMPOSITION_ANGLE:
              if (!display->getExtensions().directComposition)
              {
                  SetGlobalError(Error(EGL_BAD_ATTRIBUTE,
                                       "EGL_DIRECT_COMPOSITION_ANGLE cannot be used without "
                                       "EGL_ANGLE_direct_composition support."));
                  return EGL_FALSE;
              }
              *value = eglSurface->directComposition();
              break;
          default:
            SetGlobalError(Error(EGL_BAD_ATTRIBUTE));
            return EGL_FALSE;
        }
    
        SetGlobalError(Error(EGL_SUCCESS));
        return EGL_TRUE;
    }
    
    EGLContext EGLAPIENTRY CreateContext(EGLDisplay dpy, EGLConfig config, EGLContext share_context, const EGLint *attrib_list)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLConfig config = 0x%0.8p, EGLContext share_context = 0x%0.8p, "
              "const EGLint *attrib_list = 0x%0.8p)", dpy, config, share_context, attrib_list);
    
        Display *display = static_cast<Display*>(dpy);
        Config *configuration = static_cast<Config*>(config);
        gl::Context* sharedGLContext = static_cast<gl::Context*>(share_context);
        AttributeMap attributes      = AttributeMap::CreateFromIntArray(attrib_list);
    
        Error error = ValidateCreateContext(display, configuration, sharedGLContext, attributes);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_NO_CONTEXT;
        }
    
        gl::Context *context = nullptr;
        error = display->createContext(configuration, sharedGLContext, attributes, &context);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_NO_CONTEXT;
        }
    
        SetGlobalError(Error(EGL_SUCCESS));
        return static_cast<EGLContext>(context);
    }
    
    EGLBoolean EGLAPIENTRY DestroyContext(EGLDisplay dpy, EGLContext ctx)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLContext ctx = 0x%0.8p)", dpy, ctx);
    
        Display *display = static_cast<Display*>(dpy);
        gl::Context *context = static_cast<gl::Context*>(ctx);
    
        Error error = ValidateContext(display, context);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_FALSE;
        }
    
        if (ctx == EGL_NO_CONTEXT)
        {
            SetGlobalError(Error(EGL_BAD_CONTEXT));
            return EGL_FALSE;
        }
    
        if (context == GetGlobalContext())
        {
            SetGlobalDisplay(NULL);
            SetGlobalContext(NULL);
        }
    
        display->destroyContext(context);
    
        SetGlobalError(Error(EGL_SUCCESS));
        return EGL_TRUE;
    }
    
    EGLBoolean EGLAPIENTRY MakeCurrent(EGLDisplay dpy, EGLSurface draw, EGLSurface read, EGLContext ctx)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLSurface draw = 0x%0.8p, EGLSurface read = 0x%0.8p, EGLContext ctx = 0x%0.8p)",
              dpy, draw, read, ctx);
    
        Display *display = static_cast<Display*>(dpy);
        gl::Context *context = static_cast<gl::Context*>(ctx);
    
        // If ctx is EGL_NO_CONTEXT and either draw or read are not EGL_NO_SURFACE, an EGL_BAD_MATCH
        // error is generated.
        if (ctx == EGL_NO_CONTEXT && (draw != EGL_NO_SURFACE || read != EGL_NO_SURFACE))
        {
            SetGlobalError(Error(EGL_BAD_MATCH));
            return EGL_FALSE;
        }
    
        if (ctx != EGL_NO_CONTEXT && draw == EGL_NO_SURFACE && read == EGL_NO_SURFACE)
        {
            SetGlobalError(Error(EGL_BAD_MATCH));
            return EGL_FALSE;
        }
    
        // If either of draw or read is a valid surface and the other is EGL_NO_SURFACE, an
        // EGL_BAD_MATCH error is generated.
        if ((read == EGL_NO_SURFACE) != (draw == EGL_NO_SURFACE))
        {
            SetGlobalError(Error(
                EGL_BAD_MATCH, "read and draw must both be valid surfaces, or both be EGL_NO_SURFACE"));
            return EGL_FALSE;
        }
    
        if (dpy == EGL_NO_DISPLAY || !Display::isValidDisplay(display))
        {
            SetGlobalError(Error(EGL_BAD_DISPLAY, "'dpy' not a valid EGLDisplay handle"));
            return EGL_FALSE;
        }
    
        // EGL 1.5 spec: dpy can be uninitialized if all other parameters are null
        if (!display->isInitialized() && (ctx != EGL_NO_CONTEXT || draw != EGL_NO_SURFACE || read != EGL_NO_SURFACE))
        {
            SetGlobalError(Error(EGL_NOT_INITIALIZED, "'dpy' not initialized"));
            return EGL_FALSE;
        }
    
        if (ctx != EGL_NO_CONTEXT)
        {
            Error error = ValidateContext(display, context);
            if (error.isError())
            {
                SetGlobalError(error);
                return EGL_FALSE;
            }
        }
    
        if (display->isInitialized() && display->testDeviceLost())
        {
            SetGlobalError(Error(EGL_CONTEXT_LOST));
            return EGL_FALSE;
        }
    
        Surface *drawSurface = static_cast<Surface*>(draw);
        if (draw != EGL_NO_SURFACE)
        {
            Error error = ValidateSurface(display, drawSurface);
            if (error.isError())
            {
                SetGlobalError(error);
                return EGL_FALSE;
            }
        }
    
        Surface *readSurface = static_cast<Surface*>(read);
        if (read != EGL_NO_SURFACE)
        {
            Error error = ValidateSurface(display, readSurface);
            if (error.isError())
            {
                SetGlobalError(error);
                return EGL_FALSE;
            }
        }
    
        if (readSurface)
        {
            Error readCompatError =
                ValidateCompatibleConfigs(display, readSurface->getConfig(), readSurface,
                                          context->getConfig(), readSurface->getType());
            if (readCompatError.isError())
            {
                SetGlobalError(readCompatError);
                return EGL_FALSE;
            }
        }
    
        if (draw != read)
        {
            UNIMPLEMENTED();   // FIXME
    
            if (drawSurface)
            {
                Error drawCompatError =
                    ValidateCompatibleConfigs(display, drawSurface->getConfig(), drawSurface,
                                              context->getConfig(), drawSurface->getType());
                if (drawCompatError.isError())
                {
                    SetGlobalError(drawCompatError);
                    return EGL_FALSE;
                }
            }
        }
    
        Error makeCurrentError = display->makeCurrent(drawSurface, readSurface, context);
        if (makeCurrentError.isError())
        {
            SetGlobalError(makeCurrentError);
            return EGL_FALSE;
        }
    
        gl::Context *previousContext = GetGlobalContext();
    
        SetGlobalDisplay(display);
        SetGlobalDrawSurface(drawSurface);
        SetGlobalReadSurface(readSurface);
        SetGlobalContext(context);
    
        // Release the surface from the previously-current context, to allow
        // destroyed surfaces to delete themselves.
        if (previousContext != nullptr && context != previousContext)
        {
            previousContext->releaseSurface();
        }
    
        SetGlobalError(Error(EGL_SUCCESS));
        return EGL_TRUE;
    }
    
    EGLSurface EGLAPIENTRY GetCurrentSurface(EGLint readdraw)
    {
        EVENT("(EGLint readdraw = %d)", readdraw);
    
        if (readdraw == EGL_READ)
        {
            SetGlobalError(Error(EGL_SUCCESS));
            return GetGlobalReadSurface();
        }
        else if (readdraw == EGL_DRAW)
        {
            SetGlobalError(Error(EGL_SUCCESS));
            return GetGlobalDrawSurface();
        }
        else
        {
            SetGlobalError(Error(EGL_BAD_PARAMETER));
            return EGL_NO_SURFACE;
        }
    }
    
    EGLDisplay EGLAPIENTRY GetCurrentDisplay(void)
    {
        EVENT("()");
    
        EGLDisplay dpy = GetGlobalDisplay();
    
        SetGlobalError(Error(EGL_SUCCESS));
        return dpy;
    }
    
    EGLBoolean EGLAPIENTRY QueryContext(EGLDisplay dpy, EGLContext ctx, EGLint attribute, EGLint *value)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLContext ctx = 0x%0.8p, EGLint attribute = %d, EGLint *value = 0x%0.8p)",
              dpy, ctx, attribute, value);
    
        Display *display = static_cast<Display*>(dpy);
        gl::Context *context = static_cast<gl::Context*>(ctx);
    
        Error error = ValidateContext(display, context);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_FALSE;
        }
    
        switch (attribute)
        {
          case EGL_CONFIG_ID:
            *value = context->getConfig()->configID;
            break;
          case EGL_CONTEXT_CLIENT_TYPE:
            *value = context->getClientType();
            break;
          case EGL_CONTEXT_CLIENT_VERSION:
              *value = context->getClientMajorVersion();
              break;
          case EGL_RENDER_BUFFER:
            *value = context->getRenderBuffer();
            break;
          default:
            SetGlobalError(Error(EGL_BAD_ATTRIBUTE));
            return EGL_FALSE;
        }
    
        SetGlobalError(Error(EGL_SUCCESS));
        return EGL_TRUE;
    }
    
    EGLBoolean EGLAPIENTRY WaitGL(void)
    {
        EVENT("()");
    
        Display *display = GetGlobalDisplay();
    
        Error error = ValidateDisplay(display);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_FALSE;
        }
    
        // eglWaitGL like calling eglWaitClient with the OpenGL ES API bound. Since we only implement
        // OpenGL ES we can do the call directly.
        error = display->waitClient();
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_FALSE;
        }
    
        SetGlobalError(Error(EGL_SUCCESS));
        return EGL_TRUE;
    }
    
    EGLBoolean EGLAPIENTRY WaitNative(EGLint engine)
    {
        EVENT("(EGLint engine = %d)", engine);
    
        Display *display = GetGlobalDisplay();
    
        Error error = ValidateDisplay(display);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_FALSE;
        }
    
        if (engine != EGL_CORE_NATIVE_ENGINE)
        {
            SetGlobalError(
                Error(EGL_BAD_PARAMETER, "the 'engine' parameter has an unrecognized value"));
        }
    
        error = display->waitNative(engine, GetGlobalDrawSurface(), GetGlobalReadSurface());
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_FALSE;
        }
    
        SetGlobalError(Error(EGL_SUCCESS));
        return EGL_TRUE;
    }
    
    EGLBoolean EGLAPIENTRY SwapBuffers(EGLDisplay dpy, EGLSurface surface)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLSurface surface = 0x%0.8p)", dpy, surface);
    
        Display *display = static_cast<Display*>(dpy);
        Surface *eglSurface = (Surface*)surface;
    
        Error error = ValidateSurface(display, eglSurface);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_FALSE;
        }
    
        if (display->testDeviceLost())
        {
            SetGlobalError(Error(EGL_CONTEXT_LOST));
            return EGL_FALSE;
        }
    
        if (surface == EGL_NO_SURFACE)
        {
            SetGlobalError(Error(EGL_BAD_SURFACE));
            return EGL_FALSE;
        }
    
        error = eglSurface->swap();
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_FALSE;
        }
    
        SetGlobalError(Error(EGL_SUCCESS));
        return EGL_TRUE;
    }
    
    EGLBoolean EGLAPIENTRY CopyBuffers(EGLDisplay dpy, EGLSurface surface, EGLNativePixmapType target)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLSurface surface = 0x%0.8p, EGLNativePixmapType target = 0x%0.8p)", dpy, surface, target);
    
        Display *display = static_cast<Display*>(dpy);
        Surface *eglSurface = static_cast<Surface*>(surface);
    
        Error error = ValidateSurface(display, eglSurface);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_FALSE;
        }
    
        if (display->testDeviceLost())
        {
            SetGlobalError(Error(EGL_CONTEXT_LOST));
            return EGL_FALSE;
        }
    
        UNIMPLEMENTED();   // FIXME
    
        SetGlobalError(Error(EGL_SUCCESS));
        return 0;
    }
    
    // EGL 1.1
    EGLBoolean EGLAPIENTRY BindTexImage(EGLDisplay dpy, EGLSurface surface, EGLint buffer)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLSurface surface = 0x%0.8p, EGLint buffer = %d)", dpy, surface, buffer);
    
        Display *display = static_cast<Display*>(dpy);
        Surface *eglSurface = static_cast<Surface*>(surface);
    
        Error error = ValidateSurface(display, eglSurface);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_FALSE;
        }
    
        if (buffer != EGL_BACK_BUFFER)
        {
            SetGlobalError(Error(EGL_BAD_PARAMETER));
            return EGL_FALSE;
        }
    
        if (surface == EGL_NO_SURFACE || eglSurface->getType() == EGL_WINDOW_BIT)
        {
            SetGlobalError(Error(EGL_BAD_SURFACE));
            return EGL_FALSE;
        }
    
        if (eglSurface->getBoundTexture())
        {
            SetGlobalError(Error(EGL_BAD_ACCESS));
            return EGL_FALSE;
        }
    
        if (eglSurface->getTextureFormat() == EGL_NO_TEXTURE)
        {
            SetGlobalError(Error(EGL_BAD_MATCH));
            return EGL_FALSE;
        }
    
        gl::Context *context = GetGlobalContext();
        if (context)
        {
            gl::Texture *textureObject = context->getTargetTexture(GL_TEXTURE_2D);
            ASSERT(textureObject != NULL);
    
            if (textureObject->getImmutableFormat())
            {
                SetGlobalError(Error(EGL_BAD_MATCH));
                return EGL_FALSE;
            }
    
            error = eglSurface->bindTexImage(textureObject, buffer);
            if (error.isError())
            {
                SetGlobalError(error);
                return EGL_FALSE;
            }
        }
    
        SetGlobalError(Error(EGL_SUCCESS));
        return EGL_TRUE;
    }
    
    EGLBoolean EGLAPIENTRY SurfaceAttrib(EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint value)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLSurface surface = 0x%0.8p, EGLint attribute = %d, EGLint value = %d)",
            dpy, surface, attribute, value);
    
        Display *display = static_cast<Display*>(dpy);
        Surface *eglSurface = static_cast<Surface*>(surface);
    
        Error error = ValidateSurface(display, eglSurface);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_FALSE;
        }
    
        UNIMPLEMENTED();   // FIXME
    
        SetGlobalError(Error(EGL_SUCCESS));
        return EGL_TRUE;
    }
    
    EGLBoolean EGLAPIENTRY ReleaseTexImage(EGLDisplay dpy, EGLSurface surface, EGLint buffer)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLSurface surface = 0x%0.8p, EGLint buffer = %d)", dpy, surface, buffer);
    
        Display *display = static_cast<Display*>(dpy);
        Surface *eglSurface = static_cast<Surface*>(surface);
    
        Error error = ValidateSurface(display, eglSurface);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_FALSE;
        }
    
        if (buffer != EGL_BACK_BUFFER)
        {
            SetGlobalError(Error(EGL_BAD_PARAMETER));
            return EGL_FALSE;
        }
    
        if (surface == EGL_NO_SURFACE || eglSurface->getType() == EGL_WINDOW_BIT)
        {
            SetGlobalError(Error(EGL_BAD_SURFACE));
            return EGL_FALSE;
        }
    
        if (eglSurface->getTextureFormat() == EGL_NO_TEXTURE)
        {
            SetGlobalError(Error(EGL_BAD_MATCH));
            return EGL_FALSE;
        }
    
        gl::Texture *texture = eglSurface->getBoundTexture();
    
        if (texture)
        {
            error = eglSurface->releaseTexImage(buffer);
            if (error.isError())
            {
                SetGlobalError(error);
                return EGL_FALSE;
            }
        }
    
        SetGlobalError(Error(EGL_SUCCESS));
        return EGL_TRUE;
    }
    
    EGLBoolean EGLAPIENTRY SwapInterval(EGLDisplay dpy, EGLint interval)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLint interval = %d)", dpy, interval);
    
        Display *display = static_cast<Display*>(dpy);
    
        Error error = ValidateDisplay(display);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_FALSE;
        }
    
        Surface *draw_surface = static_cast<Surface*>(GetGlobalDrawSurface());
    
        if (draw_surface == NULL)
        {
            SetGlobalError(Error(EGL_BAD_SURFACE));
            return EGL_FALSE;
        }
    
        const egl::Config *surfaceConfig = draw_surface->getConfig();
        EGLint clampedInterval = std::min(std::max(interval, surfaceConfig->minSwapInterval), surfaceConfig->maxSwapInterval);
    
        draw_surface->setSwapInterval(clampedInterval);
    
        SetGlobalError(Error(EGL_SUCCESS));
        return EGL_TRUE;
    }
    
    
    // EGL 1.2
    EGLBoolean EGLAPIENTRY BindAPI(EGLenum api)
    {
        EVENT("(EGLenum api = 0x%X)", api);
    
        switch (api)
        {
          case EGL_OPENGL_API:
          case EGL_OPENVG_API:
            SetGlobalError(Error(EGL_BAD_PARAMETER));
            return EGL_FALSE;   // Not supported by this implementation
          case EGL_OPENGL_ES_API:
            break;
          default:
            SetGlobalError(Error(EGL_BAD_PARAMETER));
            return EGL_FALSE;
        }
    
        SetGlobalAPI(api);
    
        SetGlobalError(Error(EGL_SUCCESS));
        return EGL_TRUE;
    }
    
    EGLenum EGLAPIENTRY QueryAPI(void)
    {
        EVENT("()");
    
        EGLenum API = GetGlobalAPI();
    
        SetGlobalError(Error(EGL_SUCCESS));
        return API;
    }
    
    EGLSurface EGLAPIENTRY CreatePbufferFromClientBuffer(EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer, EGLConfig config, const EGLint *attrib_list)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLenum buftype = 0x%X, EGLClientBuffer buffer = 0x%0.8p, "
              "EGLConfig config = 0x%0.8p, const EGLint *attrib_list = 0x%0.8p)",
              dpy, buftype, buffer, config, attrib_list);
    
        Display *display = static_cast<Display*>(dpy);
        Config *configuration = static_cast<Config*>(config);
        AttributeMap attributes = AttributeMap::CreateFromIntArray(attrib_list);
    
        Error error = ValidateCreatePbufferFromClientBuffer(display, buftype, buffer, configuration, attributes);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_NO_SURFACE;
        }
    
        egl::Surface *surface = nullptr;
        error = display->createPbufferFromClientBuffer(configuration, buffer, attributes, &surface);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_NO_SURFACE;
        }
    
        return static_cast<EGLSurface>(surface);
    }
    
    EGLBoolean EGLAPIENTRY ReleaseThread(void)
    {
        EVENT("()");
    
        MakeCurrent(EGL_NO_DISPLAY, EGL_NO_CONTEXT, EGL_NO_SURFACE, EGL_NO_SURFACE);
    
        SetGlobalError(Error(EGL_SUCCESS));
        return EGL_TRUE;
    }
    
    EGLBoolean EGLAPIENTRY WaitClient(void)
    {
        EVENT("()");
    
        Display *display = GetGlobalDisplay();
    
        Error error = ValidateDisplay(display);
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_FALSE;
        }
    
        error = display->waitClient();
        if (error.isError())
        {
            SetGlobalError(error);
            return EGL_FALSE;
        }
    
        SetGlobalError(Error(EGL_SUCCESS));
        return EGL_TRUE;
    }
    
    // EGL 1.4
    EGLContext EGLAPIENTRY GetCurrentContext(void)
    {
        EVENT("()");
    
        gl::Context *context = GetGlobalContext();
    
        SetGlobalError(Error(EGL_SUCCESS));
        return static_cast<EGLContext>(context);
    }
    
    // EGL 1.5
    EGLSync EGLAPIENTRY CreateSync(EGLDisplay dpy, EGLenum type, const EGLAttrib *attrib_list)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLenum type = 0x%X, const EGLint* attrib_list = 0x%0.8p)", dpy, type, attrib_list);
    
        UNIMPLEMENTED();
        return EGL_NO_SYNC;
    }
    
    EGLBoolean EGLAPIENTRY DestroySync(EGLDisplay dpy, EGLSync sync)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLSync sync = 0x%0.8p)", dpy, sync);
    
        UNIMPLEMENTED();
        return EGL_FALSE;
    }
    
    EGLint EGLAPIENTRY ClientWaitSync(EGLDisplay dpy, EGLSync sync, EGLint flags, EGLTime timeout)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLSync sync = 0x%0.8p, EGLint flags = 0x%X, EGLTime timeout = %d)", dpy, sync, flags, timeout);
    
        UNIMPLEMENTED();
        return 0;
    }
    
    EGLBoolean EGLAPIENTRY GetSyncAttrib(EGLDisplay dpy, EGLSync sync, EGLint attribute, EGLAttrib *value)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLSync sync = 0x%0.8p, EGLint attribute = 0x%X, EGLAttrib *value = 0x%0.8p)", dpy, sync, attribute, value);
    
        UNIMPLEMENTED();
        return EGL_FALSE;
    }
    
    EGLImage EGLAPIENTRY CreateImage(EGLDisplay dpy, EGLContext ctx, EGLenum target, EGLClientBuffer buffer, const EGLAttrib *attrib_list)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLContext ctx = 0x%0.8p, EGLenum target = 0x%X, "
              "EGLClientBuffer buffer = 0x%0.8p, const EGLAttrib *attrib_list = 0x%0.8p)",
              dpy, ctx, target, buffer, attrib_list);
    
        UNIMPLEMENTED();
        return EGL_NO_IMAGE;
    }
    
    EGLBoolean EGLAPIENTRY DestroyImage(EGLDisplay dpy, EGLImage image)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLImage image = 0x%0.8p)", dpy, image);
    
        UNIMPLEMENTED();
        return EGL_FALSE;
    }
    
    EGLDisplay EGLAPIENTRY GetPlatformDisplay(EGLenum platform, void *native_display, const EGLAttrib *attrib_list)
    {
        EVENT("(EGLenum platform = %d, void* native_display = 0x%0.8p, const EGLint* attrib_list = 0x%0.8p)",
              platform, native_display, attrib_list);
    
        UNIMPLEMENTED();
        return EGL_NO_DISPLAY;
    }
    
    EGLSurface EGLAPIENTRY CreatePlatformWindowSurface(EGLDisplay dpy, EGLConfig config, void *native_window, const EGLAttrib *attrib_list)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLConfig config = 0x%0.8p, void* native_window = 0x%0.8p, const EGLint* attrib_list = 0x%0.8p)",
              dpy, config, native_window, attrib_list);
    
        UNIMPLEMENTED();
        return EGL_NO_SURFACE;
    }
    
    EGLSurface EGLAPIENTRY CreatePlatformPixmapSurface(EGLDisplay dpy, EGLConfig config, void *native_pixmap, const EGLAttrib *attrib_list)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLConfig config = 0x%0.8p, void* native_pixmap = 0x%0.8p, const EGLint* attrib_list = 0x%0.8p)",
              dpy, config, native_pixmap, attrib_list);
    
        UNIMPLEMENTED();
        return EGL_NO_SURFACE;
    }
    
    EGLBoolean EGLAPIENTRY WaitSync(EGLDisplay dpy, EGLSync sync, EGLint flags)
    {
        EVENT("(EGLDisplay dpy = 0x%0.8p, EGLSync sync = 0x%0.8p, EGLint flags = 0x%X)", dpy, sync, flags);
    
        UNIMPLEMENTED();
        return EGL_FALSE;
    }
    
    __eglMustCastToProperFunctionPointerType EGLAPIENTRY GetProcAddress(const char *procname)
    {
        EVENT("(const char *procname = \"%s\")", procname);
    
        typedef std::map<std::string, __eglMustCastToProperFunctionPointerType> ProcAddressMap;
        auto generateProcAddressMap = []()
        {
            ProcAddressMap map;
    #define INSERT_PROC_ADDRESS(ns, proc) \
        map[#ns #proc] = reinterpret_cast<__eglMustCastToProperFunctionPointerType>(ns::proc)
    
            // GLES2 core
            INSERT_PROC_ADDRESS(gl, ActiveTexture);
            INSERT_PROC_ADDRESS(gl, AttachShader);
            INSERT_PROC_ADDRESS(gl, BindAttribLocation);
            INSERT_PROC_ADDRESS(gl, BindBuffer);
            INSERT_PROC_ADDRESS(gl, BindFramebuffer);
            INSERT_PROC_ADDRESS(gl, BindRenderbuffer);
            INSERT_PROC_ADDRESS(gl, BindTexture);
            INSERT_PROC_ADDRESS(gl, BlendColor);
            INSERT_PROC_ADDRESS(gl, BlendEquation);
            INSERT_PROC_ADDRESS(gl, BlendEquationSeparate);
            INSERT_PROC_ADDRESS(gl, BlendFunc);
            INSERT_PROC_ADDRESS(gl, BlendFuncSeparate);
            INSERT_PROC_ADDRESS(gl, BufferData);
            INSERT_PROC_ADDRESS(gl, BufferSubData);
            INSERT_PROC_ADDRESS(gl, CheckFramebufferStatus);
            INSERT_PROC_ADDRESS(gl, Clear);
            INSERT_PROC_ADDRESS(gl, ClearColor);
            INSERT_PROC_ADDRESS(gl, ClearDepthf);
            INSERT_PROC_ADDRESS(gl, ClearStencil);
            INSERT_PROC_ADDRESS(gl, ColorMask);
            INSERT_PROC_ADDRESS(gl, CompileShader);
            INSERT_PROC_ADDRESS(gl, CompressedTexImage2D);
            INSERT_PROC_ADDRESS(gl, CompressedTexSubImage2D);
            INSERT_PROC_ADDRESS(gl, CopyTexImage2D);
            INSERT_PROC_ADDRESS(gl, CopyTexSubImage2D);
            INSERT_PROC_ADDRESS(gl, CreateProgram);
            INSERT_PROC_ADDRESS(gl, CreateShader);
            INSERT_PROC_ADDRESS(gl, CullFace);
            INSERT_PROC_ADDRESS(gl, DeleteBuffers);
            INSERT_PROC_ADDRESS(gl, DeleteFramebuffers);
            INSERT_PROC_ADDRESS(gl, DeleteProgram);
            INSERT_PROC_ADDRESS(gl, DeleteRenderbuffers);
            INSERT_PROC_ADDRESS(gl, DeleteShader);
            INSERT_PROC_ADDRESS(gl, DeleteTextures);
            INSERT_PROC_ADDRESS(gl, DepthFunc);
            INSERT_PROC_ADDRESS(gl, DepthMask);
            INSERT_PROC_ADDRESS(gl, DepthRangef);
            INSERT_PROC_ADDRESS(gl, DetachShader);
            INSERT_PROC_ADDRESS(gl, Disable);
            INSERT_PROC_ADDRESS(gl, DisableVertexAttribArray);
            INSERT_PROC_ADDRESS(gl, DrawArrays);
            INSERT_PROC_ADDRESS(gl, DrawElements);
            INSERT_PROC_ADDRESS(gl, Enable);
            INSERT_PROC_ADDRESS(gl, EnableVertexAttribArray);
            INSERT_PROC_ADDRESS(gl, Finish);
            INSERT_PROC_ADDRESS(gl, Flush);
            INSERT_PROC_ADDRESS(gl, FramebufferRenderbuffer);
            INSERT_PROC_ADDRESS(gl, FramebufferTexture2D);
            INSERT_PROC_ADDRESS(gl, FrontFace);
            INSERT_PROC_ADDRESS(gl, GenBuffers);
            INSERT_PROC_ADDRESS(gl, GenerateMipmap);
            INSERT_PROC_ADDRESS(gl, GenFramebuffers);
            INSERT_PROC_ADDRESS(gl, GenRenderbuffers);
            INSERT_PROC_ADDRESS(gl, GenTextures);
            INSERT_PROC_ADDRESS(gl, GetActiveAttrib);
            INSERT_PROC_ADDRESS(gl, GetActiveUniform);
            INSERT_PROC_ADDRESS(gl, GetAttachedShaders);
            INSERT_PROC_ADDRESS(gl, GetAttribLocation);
            INSERT_PROC_ADDRESS(gl, GetBooleanv);
            INSERT_PROC_ADDRESS(gl, GetBufferParameteriv);
            INSERT_PROC_ADDRESS(gl, GetError);
            INSERT_PROC_ADDRESS(gl, GetFloatv);
            INSERT_PROC_ADDRESS(gl, GetFramebufferAttachmentParameteriv);
            INSERT_PROC_ADDRESS(gl, GetIntegerv);
            INSERT_PROC_ADDRESS(gl, GetProgramiv);
            INSERT_PROC_ADDRESS(gl, GetProgramInfoLog);
            INSERT_PROC_ADDRESS(gl, GetRenderbufferParameteriv);
            INSERT_PROC_ADDRESS(gl, GetShaderiv);
            INSERT_PROC_ADDRESS(gl, GetShaderInfoLog);
            INSERT_PROC_ADDRESS(gl, GetShaderPrecisionFormat);
            INSERT_PROC_ADDRESS(gl, GetShaderSource);
            INSERT_PROC_ADDRESS(gl, GetString);
            INSERT_PROC_ADDRESS(gl, GetTexParameterfv);
            INSERT_PROC_ADDRESS(gl, GetTexParameteriv);
            INSERT_PROC_ADDRESS(gl, GetUniformfv);
            INSERT_PROC_ADDRESS(gl, GetUniformiv);
            INSERT_PROC_ADDRESS(gl, GetUniformLocation);
            INSERT_PROC_ADDRESS(gl, GetVertexAttribfv);
            INSERT_PROC_ADDRESS(gl, GetVertexAttribiv);
            INSERT_PROC_ADDRESS(gl, GetVertexAttribPointerv);
            INSERT_PROC_ADDRESS(gl, Hint);
            INSERT_PROC_ADDRESS(gl, IsBuffer);
            INSERT_PROC_ADDRESS(gl, IsEnabled);
            INSERT_PROC_ADDRESS(gl, IsFramebuffer);
            INSERT_PROC_ADDRESS(gl, IsProgram);
            INSERT_PROC_ADDRESS(gl, IsRenderbuffer);
            INSERT_PROC_ADDRESS(gl, IsShader);
            INSERT_PROC_ADDRESS(gl, IsTexture);
            INSERT_PROC_ADDRESS(gl, LineWidth);
            INSERT_PROC_ADDRESS(gl, LinkProgram);
            INSERT_PROC_ADDRESS(gl, PixelStorei);
            INSERT_PROC_ADDRESS(gl, PolygonOffset);
            INSERT_PROC_ADDRESS(gl, ReadPixels);
            INSERT_PROC_ADDRESS(gl, ReleaseShaderCompiler);
            INSERT_PROC_ADDRESS(gl, RenderbufferStorage);
            INSERT_PROC_ADDRESS(gl, SampleCoverage);
            INSERT_PROC_ADDRESS(gl, Scissor);
            INSERT_PROC_ADDRESS(gl, ShaderBinary);
            INSERT_PROC_ADDRESS(gl, ShaderSource);
            INSERT_PROC_ADDRESS(gl, StencilFunc);
            INSERT_PROC_ADDRESS(gl, StencilFuncSeparate);
            INSERT_PROC_ADDRESS(gl, StencilMask);
            INSERT_PROC_ADDRESS(gl, StencilMaskSeparate);
            INSERT_PROC_ADDRESS(gl, StencilOp);
            INSERT_PROC_ADDRESS(gl, StencilOpSeparate);
            INSERT_PROC_ADDRESS(gl, TexImage2D);
            INSERT_PROC_ADDRESS(gl, TexParameterf);
            INSERT_PROC_ADDRESS(gl, TexParameterfv);
            INSERT_PROC_ADDRESS(gl, TexParameteri);
            INSERT_PROC_ADDRESS(gl, TexParameteriv);
            INSERT_PROC_ADDRESS(gl, TexSubImage2D);
            INSERT_PROC_ADDRESS(gl, Uniform1f);
            INSERT_PROC_ADDRESS(gl, Uniform1fv);
            INSERT_PROC_ADDRESS(gl, Uniform1i);
            INSERT_PROC_ADDRESS(gl, Uniform1iv);
            INSERT_PROC_ADDRESS(gl, Uniform2f);
            INSERT_PROC_ADDRESS(gl, Uniform2fv);
            INSERT_PROC_ADDRESS(gl, Uniform2i);
            INSERT_PROC_ADDRESS(gl, Uniform2iv);
            INSERT_PROC_ADDRESS(gl, Uniform3f);
            INSERT_PROC_ADDRESS(gl, Uniform3fv);
            INSERT_PROC_ADDRESS(gl, Uniform3i);
            INSERT_PROC_ADDRESS(gl, Uniform3iv);
            INSERT_PROC_ADDRESS(gl, Uniform4f);
            INSERT_PROC_ADDRESS(gl, Uniform4fv);
            INSERT_PROC_ADDRESS(gl, Uniform4i);
            INSERT_PROC_ADDRESS(gl, Uniform4iv);
            INSERT_PROC_ADDRESS(gl, UniformMatrix2fv);
            INSERT_PROC_ADDRESS(gl, UniformMatrix3fv);
            INSERT_PROC_ADDRESS(gl, UniformMatrix4fv);
            INSERT_PROC_ADDRESS(gl, UseProgram);
            INSERT_PROC_ADDRESS(gl, ValidateProgram);
            INSERT_PROC_ADDRESS(gl, VertexAttrib1f);
            INSERT_PROC_ADDRESS(gl, VertexAttrib1fv);
            INSERT_PROC_ADDRESS(gl, VertexAttrib2f);
            INSERT_PROC_ADDRESS(gl, VertexAttrib2fv);
            INSERT_PROC_ADDRESS(gl, VertexAttrib3f);
            INSERT_PROC_ADDRESS(gl, VertexAttrib3fv);
            INSERT_PROC_ADDRESS(gl, VertexAttrib4f);
            INSERT_PROC_ADDRESS(gl, VertexAttrib4fv);
            INSERT_PROC_ADDRESS(gl, VertexAttribPointer);
            INSERT_PROC_ADDRESS(gl, Viewport);
    
            // GL_ANGLE_framebuffer_blit
            INSERT_PROC_ADDRESS(gl, BlitFramebufferANGLE);
    
            // GL_ANGLE_framebuffer_multisample
            INSERT_PROC_ADDRESS(gl, RenderbufferStorageMultisampleANGLE);
    
            // GL_EXT_discard_framebuffer
            INSERT_PROC_ADDRESS(gl, DiscardFramebufferEXT);
    
            // GL_NV_fence
            INSERT_PROC_ADDRESS(gl, DeleteFencesNV);
            INSERT_PROC_ADDRESS(gl, GenFencesNV);
            INSERT_PROC_ADDRESS(gl, IsFenceNV);
            INSERT_PROC_ADDRESS(gl, TestFenceNV);
            INSERT_PROC_ADDRESS(gl, GetFenceivNV);
            INSERT_PROC_ADDRESS(gl, FinishFenceNV);
            INSERT_PROC_ADDRESS(gl, SetFenceNV);
    
            // GL_ANGLE_translated_shader_source
            INSERT_PROC_ADDRESS(gl, GetTranslatedShaderSourceANGLE);
    
            // GL_EXT_texture_storage
            INSERT_PROC_ADDRESS(gl, TexStorage2DEXT);
    
            // GL_EXT_robustness
            INSERT_PROC_ADDRESS(gl, GetGraphicsResetStatusEXT);
            INSERT_PROC_ADDRESS(gl, ReadnPixelsEXT);
            INSERT_PROC_ADDRESS(gl, GetnUniformfvEXT);
            INSERT_PROC_ADDRESS(gl, GetnUniformivEXT);
    
            // GL_EXT_occlusion_query_boolean
            INSERT_PROC_ADDRESS(gl, GenQueriesEXT);
            INSERT_PROC_ADDRESS(gl, DeleteQueriesEXT);
            INSERT_PROC_ADDRESS(gl, IsQueryEXT);
            INSERT_PROC_ADDRESS(gl, BeginQueryEXT);
            INSERT_PROC_ADDRESS(gl, EndQueryEXT);
            INSERT_PROC_ADDRESS(gl, GetQueryivEXT);
            INSERT_PROC_ADDRESS(gl, GetQueryObjectuivEXT);
    
            // GL_EXT_disjoint_timer_query
            INSERT_PROC_ADDRESS(gl, GenQueriesEXT);
            INSERT_PROC_ADDRESS(gl, DeleteQueriesEXT);
            INSERT_PROC_ADDRESS(gl, IsQueryEXT);
            INSERT_PROC_ADDRESS(gl, BeginQueryEXT);
            INSERT_PROC_ADDRESS(gl, EndQueryEXT);
            INSERT_PROC_ADDRESS(gl, QueryCounterEXT);
            INSERT_PROC_ADDRESS(gl, GetQueryivEXT);
            INSERT_PROC_ADDRESS(gl, GetQueryObjectivEXT);
            INSERT_PROC_ADDRESS(gl, GetQueryObjectuivEXT);
            INSERT_PROC_ADDRESS(gl, GetQueryObjecti64vEXT);
            INSERT_PROC_ADDRESS(gl, GetQueryObjectui64vEXT);
    
            // GL_EXT_draw_buffers
            INSERT_PROC_ADDRESS(gl, DrawBuffersEXT);
    
            // GL_ANGLE_instanced_arrays
            INSERT_PROC_ADDRESS(gl, DrawArraysInstancedANGLE);
            INSERT_PROC_ADDRESS(gl, DrawElementsInstancedANGLE);
            INSERT_PROC_ADDRESS(gl, VertexAttribDivisorANGLE);
    
            // GL_OES_get_program_binary
            INSERT_PROC_ADDRESS(gl, GetProgramBinaryOES);
            INSERT_PROC_ADDRESS(gl, ProgramBinaryOES);
    
            // GL_OES_mapbuffer
            INSERT_PROC_ADDRESS(gl, MapBufferOES);
            INSERT_PROC_ADDRESS(gl, UnmapBufferOES);
            INSERT_PROC_ADDRESS(gl, GetBufferPointervOES);
    
            // GL_EXT_map_buffer_range
            INSERT_PROC_ADDRESS(gl, MapBufferRangeEXT);
            INSERT_PROC_ADDRESS(gl, FlushMappedBufferRangeEXT);
    
            // GL_EXT_debug_marker
            INSERT_PROC_ADDRESS(gl, InsertEventMarkerEXT);
            INSERT_PROC_ADDRESS(gl, PushGroupMarkerEXT);
            INSERT_PROC_ADDRESS(gl, PopGroupMarkerEXT);
    
            // GL_OES_EGL_image
            INSERT_PROC_ADDRESS(gl, EGLImageTargetTexture2DOES);
            INSERT_PROC_ADDRESS(gl, EGLImageTargetRenderbufferStorageOES);
    
            // GL_OES_vertex_array_object
            INSERT_PROC_ADDRESS(gl, BindVertexArrayOES);
            INSERT_PROC_ADDRESS(gl, DeleteVertexArraysOES);
            INSERT_PROC_ADDRESS(gl, GenVertexArraysOES);
            INSERT_PROC_ADDRESS(gl, IsVertexArrayOES);
    
            // GL_KHR_debug
            INSERT_PROC_ADDRESS(gl, DebugMessageControlKHR);
            INSERT_PROC_ADDRESS(gl, DebugMessageInsertKHR);
            INSERT_PROC_ADDRESS(gl, DebugMessageCallbackKHR);
            INSERT_PROC_ADDRESS(gl, GetDebugMessageLogKHR);
            INSERT_PROC_ADDRESS(gl, PushDebugGroupKHR);
            INSERT_PROC_ADDRESS(gl, PopDebugGroupKHR);
            INSERT_PROC_ADDRESS(gl, ObjectLabelKHR);
            INSERT_PROC_ADDRESS(gl, GetObjectLabelKHR);
            INSERT_PROC_ADDRESS(gl, ObjectPtrLabelKHR);
            INSERT_PROC_ADDRESS(gl, GetObjectPtrLabelKHR);
            INSERT_PROC_ADDRESS(gl, GetPointervKHR);
    
            // GL_CHROMIUM_bind_uniform_location
            INSERT_PROC_ADDRESS(gl, BindUniformLocationCHROMIUM);
    
            // GL_CHROMIUM_copy_texture
            INSERT_PROC_ADDRESS(gl, CopyTextureCHROMIUM);
            INSERT_PROC_ADDRESS(gl, CopySubTextureCHROMIUM);
    
            // GLES3 core
            INSERT_PROC_ADDRESS(gl, ReadBuffer);
            INSERT_PROC_ADDRESS(gl, DrawRangeElements);
            INSERT_PROC_ADDRESS(gl, TexImage3D);
            INSERT_PROC_ADDRESS(gl, TexSubImage3D);
            INSERT_PROC_ADDRESS(gl, CopyTexSubImage3D);
            INSERT_PROC_ADDRESS(gl, CompressedTexImage3D);
            INSERT_PROC_ADDRESS(gl, CompressedTexSubImage3D);
            INSERT_PROC_ADDRESS(gl, GenQueries);
            INSERT_PROC_ADDRESS(gl, DeleteQueries);
            INSERT_PROC_ADDRESS(gl, IsQuery);
            INSERT_PROC_ADDRESS(gl, BeginQuery);
            INSERT_PROC_ADDRESS(gl, EndQuery);
            INSERT_PROC_ADDRESS(gl, GetQueryiv);
            INSERT_PROC_ADDRESS(gl, GetQueryObjectuiv);
            INSERT_PROC_ADDRESS(gl, UnmapBuffer);
            INSERT_PROC_ADDRESS(gl, GetBufferPointerv);
            INSERT_PROC_ADDRESS(gl, DrawBuffers);
            INSERT_PROC_ADDRESS(gl, UniformMatrix2x3fv);
            INSERT_PROC_ADDRESS(gl, UniformMatrix3x2fv);
            INSERT_PROC_ADDRESS(gl, UniformMatrix2x4fv);
            INSERT_PROC_ADDRESS(gl, UniformMatrix4x2fv);
            INSERT_PROC_ADDRESS(gl, UniformMatrix3x4fv);
            INSERT_PROC_ADDRESS(gl, UniformMatrix4x3fv);
            INSERT_PROC_ADDRESS(gl, BlitFramebuffer);
            INSERT_PROC_ADDRESS(gl, RenderbufferStorageMultisample);
            INSERT_PROC_ADDRESS(gl, FramebufferTextureLayer);
            INSERT_PROC_ADDRESS(gl, MapBufferRange);
            INSERT_PROC_ADDRESS(gl, FlushMappedBufferRange);
            INSERT_PROC_ADDRESS(gl, BindVertexArray);
            INSERT_PROC_ADDRESS(gl, DeleteVertexArrays);
            INSERT_PROC_ADDRESS(gl, GenVertexArrays);
            INSERT_PROC_ADDRESS(gl, IsVertexArray);
            INSERT_PROC_ADDRESS(gl, GetIntegeri_v);
            INSERT_PROC_ADDRESS(gl, BeginTransformFeedback);
            INSERT_PROC_ADDRESS(gl, EndTransformFeedback);
            INSERT_PROC_ADDRESS(gl, BindBufferRange);
            INSERT_PROC_ADDRESS(gl, BindBufferBase);
            INSERT_PROC_ADDRESS(gl, TransformFeedbackVaryings);
            INSERT_PROC_ADDRESS(gl, GetTransformFeedbackVarying);
            INSERT_PROC_ADDRESS(gl, VertexAttribIPointer);
            INSERT_PROC_ADDRESS(gl, GetVertexAttribIiv);
            INSERT_PROC_ADDRESS(gl, GetVertexAttribIuiv);
            INSERT_PROC_ADDRESS(gl, VertexAttribI4i);
            INSERT_PROC_ADDRESS(gl, VertexAttribI4ui);
            INSERT_PROC_ADDRESS(gl, VertexAttribI4iv);
            INSERT_PROC_ADDRESS(gl, VertexAttribI4uiv);
            INSERT_PROC_ADDRESS(gl, GetUniformuiv);
            INSERT_PROC_ADDRESS(gl, GetFragDataLocation);
            INSERT_PROC_ADDRESS(gl, Uniform1ui);
            INSERT_PROC_ADDRESS(gl, Uniform2ui);
            INSERT_PROC_ADDRESS(gl, Uniform3ui);
            INSERT_PROC_ADDRESS(gl, Uniform4ui);
            INSERT_PROC_ADDRESS(gl, Uniform1uiv);
            INSERT_PROC_ADDRESS(gl, Uniform2uiv);
            INSERT_PROC_ADDRESS(gl, Uniform3uiv);
            INSERT_PROC_ADDRESS(gl, Uniform4uiv);
            INSERT_PROC_ADDRESS(gl, ClearBufferiv);
            INSERT_PROC_ADDRESS(gl, ClearBufferuiv);
            INSERT_PROC_ADDRESS(gl, ClearBufferfv);
            INSERT_PROC_ADDRESS(gl, ClearBufferfi);
            INSERT_PROC_ADDRESS(gl, GetStringi);
            INSERT_PROC_ADDRESS(gl, CopyBufferSubData);
            INSERT_PROC_ADDRESS(gl, GetUniformIndices);
            INSERT_PROC_ADDRESS(gl, GetActiveUniformsiv);
            INSERT_PROC_ADDRESS(gl, GetUniformBlockIndex);
            INSERT_PROC_ADDRESS(gl, GetActiveUniformBlockiv);
            INSERT_PROC_ADDRESS(gl, GetActiveUniformBlockName);
            INSERT_PROC_ADDRESS(gl, UniformBlockBinding);
            INSERT_PROC_ADDRESS(gl, DrawArraysInstanced);
            INSERT_PROC_ADDRESS(gl, DrawElementsInstanced);
            map["glFenceSync"] =
                reinterpret_cast<__eglMustCastToProperFunctionPointerType>(gl::FenceSync_);
            INSERT_PROC_ADDRESS(gl, IsSync);
            INSERT_PROC_ADDRESS(gl, DeleteSync);
            INSERT_PROC_ADDRESS(gl, ClientWaitSync);
            INSERT_PROC_ADDRESS(gl, WaitSync);
            INSERT_PROC_ADDRESS(gl, GetInteger64v);
            INSERT_PROC_ADDRESS(gl, GetSynciv);
            INSERT_PROC_ADDRESS(gl, GetInteger64i_v);
            INSERT_PROC_ADDRESS(gl, GetBufferParameteri64v);
            INSERT_PROC_ADDRESS(gl, GenSamplers);
            INSERT_PROC_ADDRESS(gl, DeleteSamplers);
            INSERT_PROC_ADDRESS(gl, IsSampler);
            INSERT_PROC_ADDRESS(gl, BindSampler);
            INSERT_PROC_ADDRESS(gl, SamplerParameteri);
            INSERT_PROC_ADDRESS(gl, SamplerParameteriv);
            INSERT_PROC_ADDRESS(gl, SamplerParameterf);
            INSERT_PROC_ADDRESS(gl, SamplerParameterfv);
            INSERT_PROC_ADDRESS(gl, GetSamplerParameteriv);
            INSERT_PROC_ADDRESS(gl, GetSamplerParameterfv);
            INSERT_PROC_ADDRESS(gl, VertexAttribDivisor);
            INSERT_PROC_ADDRESS(gl, BindTransformFeedback);
            INSERT_PROC_ADDRESS(gl, DeleteTransformFeedbacks);
            INSERT_PROC_ADDRESS(gl, GenTransformFeedbacks);
            INSERT_PROC_ADDRESS(gl, IsTransformFeedback);
            INSERT_PROC_ADDRESS(gl, PauseTransformFeedback);
            INSERT_PROC_ADDRESS(gl, ResumeTransformFeedback);
            INSERT_PROC_ADDRESS(gl, GetProgramBinary);
            INSERT_PROC_ADDRESS(gl, ProgramBinary);
            INSERT_PROC_ADDRESS(gl, ProgramParameteri);
            INSERT_PROC_ADDRESS(gl, InvalidateFramebuffer);
            INSERT_PROC_ADDRESS(gl, InvalidateSubFramebuffer);
            INSERT_PROC_ADDRESS(gl, TexStorage2D);
            INSERT_PROC_ADDRESS(gl, TexStorage3D);
            INSERT_PROC_ADDRESS(gl, GetInternalformativ);
    
            // GLES31 core
            INSERT_PROC_ADDRESS(gl, DispatchCompute);
            INSERT_PROC_ADDRESS(gl, DispatchComputeIndirect);
            INSERT_PROC_ADDRESS(gl, DrawArraysIndirect);
            INSERT_PROC_ADDRESS(gl, DrawElementsIndirect);
            INSERT_PROC_ADDRESS(gl, FramebufferParameteri);
            INSERT_PROC_ADDRESS(gl, GetFramebufferParameteriv);
            INSERT_PROC_ADDRESS(gl, GetProgramInterfaceiv);
            INSERT_PROC_ADDRESS(gl, GetProgramResourceIndex);
            INSERT_PROC_ADDRESS(gl, GetProgramResourceName);
            INSERT_PROC_ADDRESS(gl, GetProgramResourceiv);
            INSERT_PROC_ADDRESS(gl, GetProgramResourceLocation);
            INSERT_PROC_ADDRESS(gl, UseProgramStages);
            INSERT_PROC_ADDRESS(gl, ActiveShaderProgram);
            INSERT_PROC_ADDRESS(gl, CreateShaderProgramv);
            INSERT_PROC_ADDRESS(gl, BindProgramPipeline);
            INSERT_PROC_ADDRESS(gl, DeleteProgramPipelines);
            INSERT_PROC_ADDRESS(gl, GenProgramPipelines);
            INSERT_PROC_ADDRESS(gl, IsProgramPipeline);
            INSERT_PROC_ADDRESS(gl, GetProgramPipelineiv);
            INSERT_PROC_ADDRESS(gl, ProgramUniform1i);
            INSERT_PROC_ADDRESS(gl, ProgramUniform2i);
            INSERT_PROC_ADDRESS(gl, ProgramUniform3i);
            INSERT_PROC_ADDRESS(gl, ProgramUniform4i);
            INSERT_PROC_ADDRESS(gl, ProgramUniform1ui);
            INSERT_PROC_ADDRESS(gl, ProgramUniform2ui);
            INSERT_PROC_ADDRESS(gl, ProgramUniform3ui);
            INSERT_PROC_ADDRESS(gl, ProgramUniform4ui);
            INSERT_PROC_ADDRESS(gl, ProgramUniform1f);
            INSERT_PROC_ADDRESS(gl, ProgramUniform2f);
            INSERT_PROC_ADDRESS(gl, ProgramUniform3f);
            INSERT_PROC_ADDRESS(gl, ProgramUniform4f);
            INSERT_PROC_ADDRESS(gl, ProgramUniform1iv);
            INSERT_PROC_ADDRESS(gl, ProgramUniform2iv);
            INSERT_PROC_ADDRESS(gl, ProgramUniform3iv);
            INSERT_PROC_ADDRESS(gl, ProgramUniform4iv);
            INSERT_PROC_ADDRESS(gl, ProgramUniform1uiv);
            INSERT_PROC_ADDRESS(gl, ProgramUniform2uiv);
            INSERT_PROC_ADDRESS(gl, ProgramUniform3uiv);
            INSERT_PROC_ADDRESS(gl, ProgramUniform4uiv);
            INSERT_PROC_ADDRESS(gl, ProgramUniform1fv);
            INSERT_PROC_ADDRESS(gl, ProgramUniform2fv);
            INSERT_PROC_ADDRESS(gl, ProgramUniform3fv);
            INSERT_PROC_ADDRESS(gl, ProgramUniform4fv);
            INSERT_PROC_ADDRESS(gl, ProgramUniformMatrix2fv);
            INSERT_PROC_ADDRESS(gl, ProgramUniformMatrix3fv);
            INSERT_PROC_ADDRESS(gl, ProgramUniformMatrix4fv);
            INSERT_PROC_ADDRESS(gl, ProgramUniformMatrix2x3fv);
            INSERT_PROC_ADDRESS(gl, ProgramUniformMatrix3x2fv);
            INSERT_PROC_ADDRESS(gl, ProgramUniformMatrix2x4fv);
            INSERT_PROC_ADDRESS(gl, ProgramUniformMatrix4x2fv);
            INSERT_PROC_ADDRESS(gl, ProgramUniformMatrix3x4fv);
            INSERT_PROC_ADDRESS(gl, ProgramUniformMatrix4x3fv);
            INSERT_PROC_ADDRESS(gl, ValidateProgramPipeline);
            INSERT_PROC_ADDRESS(gl, GetProgramPipelineInfoLog);
            INSERT_PROC_ADDRESS(gl, BindImageTexture);
            INSERT_PROC_ADDRESS(gl, GetBooleani_v);
            INSERT_PROC_ADDRESS(gl, MemoryBarrier);
            INSERT_PROC_ADDRESS(gl, MemoryBarrierByRegion);
            INSERT_PROC_ADDRESS(gl, TexStorage2DMultisample);
            INSERT_PROC_ADDRESS(gl, GetMultisamplefv);
            INSERT_PROC_ADDRESS(gl, SampleMaski);
            INSERT_PROC_ADDRESS(gl, GetTexLevelParameteriv);
            INSERT_PROC_ADDRESS(gl, GetTexLevelParameterfv);
            INSERT_PROC_ADDRESS(gl, BindVertexBuffer);
            INSERT_PROC_ADDRESS(gl, VertexAttribFormat);
            INSERT_PROC_ADDRESS(gl, VertexAttribIFormat);
            INSERT_PROC_ADDRESS(gl, VertexAttribBinding);
            INSERT_PROC_ADDRESS(gl, VertexBindingDivisor);
    
            // EGL 1.0
            INSERT_PROC_ADDRESS(egl, ChooseConfig);
            INSERT_PROC_ADDRESS(egl, CopyBuffers);
            INSERT_PROC_ADDRESS(egl, CreateContext);
            INSERT_PROC_ADDRESS(egl, CreatePbufferSurface);
            INSERT_PROC_ADDRESS(egl, CreatePixmapSurface);
            INSERT_PROC_ADDRESS(egl, CreateWindowSurface);
            INSERT_PROC_ADDRESS(egl, DestroyContext);
            INSERT_PROC_ADDRESS(egl, DestroySurface);
            INSERT_PROC_ADDRESS(egl, GetConfigAttrib);
            INSERT_PROC_ADDRESS(egl, GetConfigs);
            INSERT_PROC_ADDRESS(egl, GetCurrentDisplay);
            INSERT_PROC_ADDRESS(egl, GetCurrentSurface);
            INSERT_PROC_ADDRESS(egl, GetDisplay);
            INSERT_PROC_ADDRESS(egl, GetError);
            INSERT_PROC_ADDRESS(egl, GetProcAddress);
            INSERT_PROC_ADDRESS(egl, Initialize);
            INSERT_PROC_ADDRESS(egl, MakeCurrent);
            INSERT_PROC_ADDRESS(egl, QueryContext);
            INSERT_PROC_ADDRESS(egl, QueryString);
            INSERT_PROC_ADDRESS(egl, QuerySurface);
            INSERT_PROC_ADDRESS(egl, SwapBuffers);
            INSERT_PROC_ADDRESS(egl, Terminate);
            INSERT_PROC_ADDRESS(egl, WaitGL);
            INSERT_PROC_ADDRESS(egl, WaitNative);
    
            // EGL 1.1
            INSERT_PROC_ADDRESS(egl, BindTexImage);
            INSERT_PROC_ADDRESS(egl, ReleaseTexImage);
            INSERT_PROC_ADDRESS(egl, SurfaceAttrib);
            INSERT_PROC_ADDRESS(egl, SwapInterval);
    
            // EGL 1.2
            INSERT_PROC_ADDRESS(egl, BindAPI);
            INSERT_PROC_ADDRESS(egl, QueryAPI);
            INSERT_PROC_ADDRESS(egl, CreatePbufferFromClientBuffer);
            INSERT_PROC_ADDRESS(egl, ReleaseThread);
            INSERT_PROC_ADDRESS(egl, WaitClient);
    
            // EGL 1.4
            INSERT_PROC_ADDRESS(egl, GetCurrentContext);
    
            // EGL 1.5
            INSERT_PROC_ADDRESS(egl, CreateSync);
            INSERT_PROC_ADDRESS(egl, DestroySync);
            INSERT_PROC_ADDRESS(egl, ClientWaitSync);
            INSERT_PROC_ADDRESS(egl, GetSyncAttrib);
            INSERT_PROC_ADDRESS(egl, CreateImage);
            INSERT_PROC_ADDRESS(egl, DestroyImage);
            INSERT_PROC_ADDRESS(egl, GetPlatformDisplay);
            INSERT_PROC_ADDRESS(egl, CreatePlatformWindowSurface);
            INSERT_PROC_ADDRESS(egl, CreatePlatformPixmapSurface);
            INSERT_PROC_ADDRESS(egl, WaitSync);
    
            // EGL_ANGLE_query_surface_pointer
            INSERT_PROC_ADDRESS(egl, QuerySurfacePointerANGLE);
    
            // EGL_NV_post_sub_buffer
            INSERT_PROC_ADDRESS(egl, PostSubBufferNV);
    
            // EGL_EXT_platform_base
            INSERT_PROC_ADDRESS(egl, GetPlatformDisplayEXT);
    
            // EGL_EXT_device_query
            INSERT_PROC_ADDRESS(egl, QueryDisplayAttribEXT);
            INSERT_PROC_ADDRESS(egl, QueryDeviceAttribEXT);
            INSERT_PROC_ADDRESS(egl, QueryDeviceStringEXT);
    
            // EGL_KHR_image_base/EGL_KHR_image
            INSERT_PROC_ADDRESS(egl, CreateImageKHR);
            INSERT_PROC_ADDRESS(egl, DestroyImageKHR);
    
            // EGL_EXT_device_creation
            INSERT_PROC_ADDRESS(egl, CreateDeviceANGLE);
            INSERT_PROC_ADDRESS(egl, ReleaseDeviceANGLE);
    
            // EGL_KHR_stream
            INSERT_PROC_ADDRESS(egl, CreateStreamKHR);
            INSERT_PROC_ADDRESS(egl, DestroyStreamKHR);
            INSERT_PROC_ADDRESS(egl, StreamAttribKHR);
            INSERT_PROC_ADDRESS(egl, QueryStreamKHR);
            INSERT_PROC_ADDRESS(egl, QueryStreamu64KHR);
    
            // EGL_KHR_stream_consumer_gltexture
            INSERT_PROC_ADDRESS(egl, StreamConsumerGLTextureExternalKHR);
            INSERT_PROC_ADDRESS(egl, StreamConsumerAcquireKHR);
            INSERT_PROC_ADDRESS(egl, StreamConsumerReleaseKHR);
    
            // EGL_NV_stream_consumer_gltexture_yuv
            INSERT_PROC_ADDRESS(egl, StreamConsumerGLTextureExternalAttribsNV);
    
            // EGL_ANGLE_stream_producer_d3d_texture_nv12
            INSERT_PROC_ADDRESS(egl, CreateStreamProducerD3DTextureNV12ANGLE);
            INSERT_PROC_ADDRESS(egl, StreamPostD3DTextureNV12ANGLE);
    
    #undef INSERT_PROC_ADDRESS
            return map;
        };
    
        static const ProcAddressMap procAddressMap = generateProcAddressMap();
    
        auto iter = procAddressMap.find(procname);
        if (iter != procAddressMap.end())
        {
            return iter->second;
        }
        else
        {
            return nullptr;
        }
    }
    
    }