layers/vk_layer_utils.h

/* Copyright (c) 2015-2017 The Khronos Group Inc.
 * Copyright (c) 2015-2017 Valve Corporation
 * Copyright (c) 2015-2017 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: Mark Lobodzinski <mark@lunarg.com>
 * Author: Courtney Goeltzenleuchter <courtney@LunarG.com>
 * Author: Dave Houlton <daveh@lunarg.com>
 */

#pragma once
#include <stdbool.h>
#include <vector>
#include "vk_format_utils.h"
#include "vk_layer_logging.h"

#ifndef WIN32
#include <strings.h>  // For ffs()
#else
#include <intrin.h>  // For __lzcnt()
#endif

#ifdef __cplusplus
extern "C" {
#endif

#define VK_LAYER_API_VERSION VK_MAKE_VERSION(1, 0, VK_HEADER_VERSION)

typedef enum VkStringErrorFlagBits {
    VK_STRING_ERROR_NONE = 0x00000000,
    VK_STRING_ERROR_LENGTH = 0x00000001,
    VK_STRING_ERROR_BAD_DATA = 0x00000002,
} VkStringErrorFlagBits;
typedef VkFlags VkStringErrorFlags;

VK_LAYER_EXPORT void layer_debug_actions(debug_report_data *report_data, std::vector<VkDebugReportCallbackEXT> &logging_callback,
                                         const VkAllocationCallbacks *pAllocator, const char *layer_identifier);

VK_LAYER_EXPORT VkStringErrorFlags vk_string_validate(const int max_length, const char *char_array);
VK_LAYER_EXPORT bool white_list(const char *item, const char *whitelist);

static inline int u_ffs(int val) {
#ifdef WIN32
    unsigned long bit_pos = 0;
    if (_BitScanForward(&bit_pos, val) != 0) {
        bit_pos += 1;
    }
    return bit_pos;
#else
    return ffs(val);
#endif
}

#ifdef __cplusplus
}
#endif