Platform.cpp - mozsearch

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//

// Copyright 2015 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.

//

// Platform.cpp: Implementation methods for angle::Platform.

#include <platform/PlatformMethods.h>

#include <cstring>

#include "common/debug.h"

namespace

// TODO(jmadill): Make methods owned by egl::Display.

angle::PlatformMethods &PlatformMethods()

    static angle::PlatformMethods platformMethods;

    return platformMethods;

}  // anonymous namespace

angle::PlatformMethods *ANGLEPlatformCurrent()

    return &PlatformMethods();

bool ANGLE_APIENTRY ANGLEGetDisplayPlatform(angle::EGLDisplayType display,

                                            const char *const methodNames[],

                                            unsigned int methodNameCount,

                                            void *context,

                                            void *platformMethods)

    angle::PlatformMethods **platformMethodsOut =

        reinterpret_cast<angle::PlatformMethods **>(platformMethods);

    // We allow for a lower input count of impl platform methods if the subset is correct.

    if (methodNameCount > angle::g_NumPlatformMethods)

        ERR() << "Invalid platform method count: " << methodNameCount << ", expected "

              << angle::g_NumPlatformMethods << ".";

        return false;

    for (unsigned int nameIndex = 0; nameIndex < methodNameCount; ++nameIndex)

        const char *expectedName = angle::g_PlatformMethodNames[nameIndex];

        const char *actualName   = methodNames[nameIndex];

        // Skip deprecated methods.  The names of these methods start with |placeholder|.

        constexpr char kPlaceholder[] = "placeholder";

        if (strncmp(expectedName, kPlaceholder, sizeof(kPlaceholder) - 1) == 0)

            continue;

        if (strcmp(expectedName, actualName) != 0)

            ERR() << "Invalid platform method name: " << actualName << ", expected " << expectedName

                  << ".";

            return false;

    // TODO(jmadill): Store platform methods in display.

    PlatformMethods().context = context;

    *platformMethodsOut       = &PlatformMethods();

    return true;

void ANGLE_APIENTRY ANGLEResetDisplayPlatform(angle::EGLDisplayType display)

    // TODO(jmadill): Store platform methods in display.

    PlatformMethods() = angle::PlatformMethods();