| // Copyright 2014-2021 The Khronos Group, Inc. |
| // |
| // SPDX-License-Identifier: CC-BY-4.0 |
| |
| include::{generated}/meta/{refprefix}VK_KHR_shader_float16_int8.txt[] |
| |
| === Other Extension Metadata |
| |
| *Last Modified Date*:: |
| 2018-03-07 |
| *Interactions and External Dependencies*:: |
| - Promoted to Vulkan 1.2 Core |
| - This extension interacts with `apiext:VK_KHR_8bit_storage` |
| - This extension interacts with `apiext:VK_KHR_16bit_storage` |
| - This extension interacts with `apiext:VK_KHR_shader_float_controls` |
| - This extension provides API support for |
| https://github.com/KhronosGroup/GLSL/blob/master/extensions/ext/GL_EXT_shader_explicit_arithmetic_types.txt[`GL_EXT_shader_explicit_arithmetic_types`] |
| *IP Status*:: |
| No known IP claims. |
| *Contributors*:: |
| - Alexander Galazin, Arm |
| - Jan-Harald Fredriksen, Arm |
| - Jeff Bolz, NVIDIA |
| - Graeme Leese, Broadcom |
| - Daniel Rakos, AMD |
| |
| === Description |
| |
| The `VK_KHR_shader_float16_int8` extension allows use of 16-bit |
| floating-point types and 8-bit integer types in shaders for arithmetic |
| operations. |
| |
| It introduces two new optional features pname:shaderFloat16 and |
| pname:shaderInt8 which directly map to the code:Float16 and the code:Int8 |
| SPIR-V capabilities. |
| The `VK_KHR_shader_float16_int8` extension also specifies precision |
| requirements for half-precision floating-point SPIR-V operations. |
| This extension does not enable use of 8-bit integer types or 16-bit |
| floating-point types in any <<interfaces-iointerfaces, shader input and |
| output interfaces>> and therefore does not supersede the |
| `apiext:VK_KHR_8bit_storage` or `apiext:VK_KHR_16bit_storage` extensions. |
| |
| === Promotion to Vulkan 1.2 |
| |
| All functionality in this extension is included in core Vulkan 1.2, with the |
| KHR suffix omitted. |
| However, if Vulkan 1.2 is supported and this extension is not, both the |
| code:shaderFloat16 and code:shaderInt8 capabilities are optional. |
| The original type, enum and command names are still available as aliases of |
| the core functionality. |
| |
| include::{generated}/interfaces/VK_KHR_shader_float16_int8.txt[] |
| |
| === Version History |
| * Revision 1, 2018-03-07 (Alexander Galazin) |
| - Initial draft |
