| // Copyright (c) 2020 The Khronos Group Inc. |
| // |
| // SPDX-License-Identifier: CC-BY-4.0 |
| |
| include::{generated}/meta/{refprefix}VK_EXT_color_write_enable.txt[] |
| |
| === Other Extension Metadata |
| |
| *Last Modified Date*:: |
| 2020-02-25 |
| *IP Status*:: |
| No known IP claims. |
| *Contributors*:: |
| - Sharif Elcott, Google |
| - Tobias Hector, AMD |
| - Piers Daniell, NVIDIA |
| |
| === Description |
| |
| This extension allows for selectively enabling and disabling writes to |
| output color attachments via a pipeline dynamic state. |
| |
| The intended use cases for this new state are mostly identical to those of |
| colorWriteMask, such as selectively disabling writes to avoid feedback loops |
| between subpasses or bandwidth savings for unused outputs. |
| By making the state dynamic, one additional benefit is the ability to reduce |
| pipeline counts and pipeline switching via shaders that write a superset of |
| the desired data of which subsets are selected dynamically. |
| The reason for a new state, colorWriteEnable, rather than making |
| colorWriteMask dynamic is that, on many implementations, the more flexible |
| per-component semantics of the colorWriteMask state cannot be made dynamic |
| in a performant manner. |
| |
| include::{generated}/interfaces/VK_EXT_color_write_enable.txt[] |
| |
| === Version History |
| |
| * Revision 1, 2020-01-25 (Sharif Elcott) |
| - Internal revisions |
