profiles_interface.cpp

/*
 * Copyright (C) 2022-2026 Valve Corporation
 * Copyright (C) 2022-2026 LunarG, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Author: Christophe Riccio <christophe@lunarg.com>
 */

#include "profiles.h"
#include "profiles_interface.h"
#include "vulkan/vk_layer.h"
#include <cassert>

uint32_t loader_layer_iface_version = CURRENT_LOADER_LAYER_INTERFACE_VERSION;

// Function symbols exported by this layer's library //////////////////////////////////////////////////////////////////

#if defined(__GNUC__) && __GNUC__ >= 4
#define PROFILES_EXPORT __attribute__((visibility("default")))
#else
#define PROFILES_EXPORT
#endif

// Keep synchronized with VkLayer_khronos_profiles.def / VkLayer_khronos_profiles.map
extern "C" {

PROFILES_EXPORT VKAPI_ATTR PFN_vkVoidFunction VKAPI_CALL vkGetInstanceProcAddr(VkInstance instance, const char *pName) {
    return GetInstanceProcAddr(instance, pName);
}

PROFILES_EXPORT VKAPI_ATTR VkResult VKAPI_CALL vkCreateInstance(const VkInstanceCreateInfo *pCreateInfo,
                                                                const VkAllocationCallbacks *pAllocator, VkInstance *pInstance) {
    return CreateInstance(pCreateInfo, pAllocator, pInstance);
}

PROFILES_EXPORT VKAPI_ATTR VkResult VKAPI_CALL vkEnumerateInstanceLayerProperties(uint32_t *pCount,
                                                                                  VkLayerProperties *pProperties) {
    return EnumerateInstanceLayerProperties(pCount, pProperties);
}

PROFILES_EXPORT VKAPI_ATTR VkResult VKAPI_CALL vkEnumerateInstanceExtensionProperties(const char *pLayerName, uint32_t *pCount,
                                                                                      VkExtensionProperties *pProperties) {
    return EnumerateInstanceExtensionProperties(pLayerName, pCount, pProperties);
}

PROFILES_EXPORT VKAPI_ATTR VkResult VKAPI_CALL vkEnumeratePhysicalDevices(VkInstance instance, uint32_t *pPhysicalDeviceCount,
                                                                          VkPhysicalDevice *pPhysicalDevices) {
    return EnumeratePhysicalDevices(instance, pPhysicalDeviceCount, pPhysicalDevices);
}

PROFILES_EXPORT VKAPI_ATTR VkResult VKAPI_CALL vkNegotiateLoaderLayerInterfaceVersion(VkNegotiateLayerInterface *pVersionStruct) {
    assert(pVersionStruct != NULL);
    assert(pVersionStruct->sType == LAYER_NEGOTIATE_INTERFACE_STRUCT);

    if (pVersionStruct->loaderLayerInterfaceVersion > CURRENT_LOADER_LAYER_INTERFACE_VERSION) {
        // Loader is requesting newer interface version; reduce to the version we support.
        pVersionStruct->loaderLayerInterfaceVersion = CURRENT_LOADER_LAYER_INTERFACE_VERSION;
    } else if (pVersionStruct->loaderLayerInterfaceVersion < CURRENT_LOADER_LAYER_INTERFACE_VERSION) {
        // Loader is requesting older interface version; record the Loader's version
        loader_layer_iface_version = pVersionStruct->loaderLayerInterfaceVersion;
    }

    if (pVersionStruct->loaderLayerInterfaceVersion >= 2) {
        pVersionStruct->pfnGetInstanceProcAddr = vkGetInstanceProcAddr;
        pVersionStruct->pfnGetDeviceProcAddr = nullptr;
        pVersionStruct->pfnGetPhysicalDeviceProcAddr = nullptr;
    }

    return VK_SUCCESS;
}

}  // extern "C"