| /************************************************************************** |
| * |
| * Copyright 2015 Valve Software |
| * All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| * |
| * Author: Mark Lobodzinski <mark@lunarg.com> |
| * Author: Courtney Goeltzenleuchter <courtney@LunarG.com> |
| **************************************************************************/ |
| #pragma once |
| #include <stdbool.h> |
| #ifndef WIN32 |
| #include <strings.h> /* for ffs() */ |
| #else |
| #include <intrin.h> /* for __lzcnt() */ |
| #endif |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| typedef enum VkFormatCompatibilityClass { |
| VK_FORMAT_COMPATIBILITY_CLASS_NONE_BIT = 0, |
| VK_FORMAT_COMPATIBILITY_CLASS_8_BIT = 1, |
| VK_FORMAT_COMPATIBILITY_CLASS_16_BIT = 2, |
| VK_FORMAT_COMPATIBILITY_CLASS_24_BIT = 3, |
| VK_FORMAT_COMPATIBILITY_CLASS_32_BIT = 4, |
| VK_FORMAT_COMPATIBILITY_CLASS_48_BIT = 5, |
| VK_FORMAT_COMPATIBILITY_CLASS_64_BIT = 6, |
| VK_FORMAT_COMPATIBILITY_CLASS_96_BIT = 7, |
| VK_FORMAT_COMPATIBILITY_CLASS_128_BIT = 8, |
| VK_FORMAT_COMPATIBILITY_CLASS_192_BIT = 9, |
| VK_FORMAT_COMPATIBILITY_CLASS_256_BIT = 10, |
| VK_FORMAT_COMPATIBILITY_CLASS_BC1_RGB_BIT = 11, |
| VK_FORMAT_COMPATIBILITY_CLASS_BC1_RGBA_BIT = 12, |
| VK_FORMAT_COMPATIBILITY_CLASS_BC2_BIT = 13, |
| VK_FORMAT_COMPATIBILITY_CLASS_BC3_BIT = 14, |
| VK_FORMAT_COMPATIBILITY_CLASS_BC4_BIT = 15, |
| VK_FORMAT_COMPATIBILITY_CLASS_BC5_BIT = 16, |
| VK_FORMAT_COMPATIBILITY_CLASS_BC6H_BIT = 17, |
| VK_FORMAT_COMPATIBILITY_CLASS_BC7_BIT = 18, |
| VK_FORMAT_COMPATIBILITY_CLASS_ETC2_RGB_BIT = 19, |
| VK_FORMAT_COMPATIBILITY_CLASS_ETC2_RGBA_BIT = 20, |
| VK_FORMAT_COMPATIBILITY_CLASS_ETC2_EAC_RGBA_BIT = 21, |
| VK_FORMAT_COMPATIBILITY_CLASS_EAC_R_BIT = 22, |
| VK_FORMAT_COMPATIBILITY_CLASS_EAC_RG_BIT = 23, |
| VK_FORMAT_COMPATIBILITY_CLASS_ASTC_4X4_BIT = 24, |
| VK_FORMAT_COMPATIBILITY_CLASS_ASTC_5X4_BIT = 25, |
| VK_FORMAT_COMPATIBILITY_CLASS_ASTC_5X5_BIT = 26, |
| VK_FORMAT_COMPATIBILITY_CLASS_ASTC_6X5_BIT = 27, |
| VK_FORMAT_COMPATIBILITY_CLASS_ASTC_6X6_BIT = 28, |
| VK_FORMAT_COMPATIBILITY_CLASS_ASTC_8X5_BIT = 29, |
| VK_FORMAT_COMPATIBILITY_CLASS_ASTC_8X6_BIT = 20, |
| VK_FORMAT_COMPATIBILITY_CLASS_ASTC_8X8_BIT = 31, |
| VK_FORMAT_COMPATIBILITY_CLASS_ASTC_10X5_BIT = 32, |
| VK_FORMAT_COMPATIBILITY_CLASS_ASTC_10X6_BIT = 33, |
| VK_FORMAT_COMPATIBILITY_CLASS_ASTC_10X8_BIT = 34, |
| VK_FORMAT_COMPATIBILITY_CLASS_ASTC_10X10_BIT = 35, |
| VK_FORMAT_COMPATIBILITY_CLASS_ASTC_12X10_BIT = 36, |
| VK_FORMAT_COMPATIBILITY_CLASS_ASTC_12X12_BIT = 37, |
| VK_FORMAT_COMPATIBILITY_CLASS_D16_BIT = 38, |
| VK_FORMAT_COMPATIBILITY_CLASS_D24_BIT = 39, |
| VK_FORMAT_COMPATIBILITY_CLASS_D32_BIT = 30, |
| VK_FORMAT_COMPATIBILITY_CLASS_S8_BIT = 41, |
| VK_FORMAT_COMPATIBILITY_CLASS_D16S8_BIT = 42, |
| VK_FORMAT_COMPATIBILITY_CLASS_D24S8_BIT = 43, |
| VK_FORMAT_COMPATIBILITY_CLASS_D32S8_BIT = 44, |
| VK_FORMAT_COMPATIBILITY_CLASS_MAX_ENUM = 45 |
| } VkFormatCompatibilityClass; |
| |
| |
| static inline bool vk_format_is_undef(VkFormat format) |
| { |
| return (format == VK_FORMAT_UNDEFINED); |
| } |
| |
| bool vk_format_is_depth_or_stencil(VkFormat format); |
| bool vk_format_is_depth_and_stencil(VkFormat format); |
| bool vk_format_is_depth_only(VkFormat format); |
| bool vk_format_is_stencil_only(VkFormat format); |
| |
| static inline bool vk_format_is_color(VkFormat format) |
| { |
| return !(vk_format_is_undef(format) || vk_format_is_depth_or_stencil(format)); |
| } |
| |
| bool vk_format_is_norm(VkFormat format); |
| bool vk_format_is_int(VkFormat format); |
| bool vk_format_is_sint(VkFormat format); |
| bool vk_format_is_uint(VkFormat format); |
| bool vk_format_is_float(VkFormat format); |
| bool vk_format_is_srgb(VkFormat format); |
| bool vk_format_is_compressed(VkFormat format); |
| size_t vk_format_get_size(VkFormat format); |
| unsigned int vk_format_get_channel_count(VkFormat format); |
| VkFormatCompatibilityClass vk_format_get_compatibility_class(VkFormat format); |
| VkDeviceSize vk_safe_modulo(VkDeviceSize dividend, VkDeviceSize divisor); |
| |
| 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 |
| |
| |