| // Copyright (c) 2018-2020 NVIDIA Corporation |
| // |
| // SPDX-License-Identifier: CC-BY-4.0 |
| |
| include::{generated}/meta/{refprefix}VK_NV_scissor_exclusive.txt[] |
| |
| === Other Extension Metadata |
| |
| *Last Modified Date*:: |
| 2018-07-31 |
| *IP Status*:: |
| No known IP claims. |
| *Interactions and External Dependencies*:: |
| None |
| *Contributors*:: |
| - Pat Brown, NVIDIA |
| - Jeff Bolz, NVIDIA |
| - Piers Daniell, NVIDIA |
| - Daniel Koch, NVIDIA |
| |
| === Description |
| |
| This extension adds support for an exclusive scissor test to Vulkan. |
| The exclusive scissor test behaves like the scissor test, except that the |
| exclusive scissor test fails for pixels inside the corresponding rectangle |
| and passes for pixels outside the rectangle. |
| If the same rectangle is used for both the scissor and exclusive scissor |
| tests, the exclusive scissor test will pass if and only if the scissor test |
| fails. |
| |
| include::{generated}/interfaces/VK_NV_scissor_exclusive.txt[] |
| |
| === Issues |
| |
| 1) For the scissor test, the viewport state must be created with a matching |
| number of scissor and viewport rectangles. |
| Should we have the same requirement for exclusive scissors? |
| |
| *RESOLVED*: For exclusive scissors, we relax this requirement and allow an |
| exclusive scissor rectangle count that is either zero or equal to the number |
| of viewport rectangles. |
| If you pass in an exclusive scissor count of zero, the exclusive scissor |
| test is treated as disabled. |
| |
| === Version History |
| |
| * Revision 1, 2018-07-31 (Pat Brown) |
| - Internal revisions |
