1// Copyright 2014-2021 The Khronos Group, Inc. 2// 3// SPDX-License-Identifier: CC-BY-4.0 4 5include::{generated}/meta/{refprefix}VK_KHR_shader_float16_int8.txt[] 6 7=== Other Extension Metadata 8 9*Last Modified Date*:: 10 2018-03-07 11*Interactions and External Dependencies*:: 12 - Promoted to Vulkan 1.2 Core 13 - This extension interacts with `apiext:VK_KHR_8bit_storage` 14 - This extension interacts with `apiext:VK_KHR_16bit_storage` 15 - This extension interacts with `apiext:VK_KHR_shader_float_controls` 16 - This extension provides API support for 17 https://github.com/KhronosGroup/GLSL/blob/master/extensions/ext/GL_EXT_shader_explicit_arithmetic_types.txt[`GL_EXT_shader_explicit_arithmetic_types`] 18*IP Status*:: 19 No known IP claims. 20*Contributors*:: 21 - Alexander Galazin, Arm 22 - Jan-Harald Fredriksen, Arm 23 - Jeff Bolz, NVIDIA 24 - Graeme Leese, Broadcom 25 - Daniel Rakos, AMD 26 27=== Description 28 29The `VK_KHR_shader_float16_int8` extension allows use of 16-bit 30floating-point types and 8-bit integer types in shaders for arithmetic 31operations. 32 33It introduces two new optional features pname:shaderFloat16 and 34pname:shaderInt8 which directly map to the code:Float16 and the code:Int8 35SPIR-V capabilities. 36The `VK_KHR_shader_float16_int8` extension also specifies precision 37requirements for half-precision floating-point SPIR-V operations. 38This extension does not enable use of 8-bit integer types or 16-bit 39floating-point types in any <<interfaces-iointerfaces, shader input and 40output interfaces>> and therefore does not supersede the 41`apiext:VK_KHR_8bit_storage` or `apiext:VK_KHR_16bit_storage` extensions. 42 43=== Promotion to Vulkan 1.2 44 45All functionality in this extension is included in core Vulkan 1.2, with the 46KHR suffix omitted. 47However, if Vulkan 1.2 is supported and this extension is not, both the 48code:shaderFloat16 and code:shaderInt8 capabilities are optional. 49The original type, enum and command names are still available as aliases of 50the core functionality. 51 52include::{generated}/interfaces/VK_KHR_shader_float16_int8.txt[] 53 54=== Version History 55 * Revision 1, 2018-03-07 (Alexander Galazin) 56 - Initial draft 57