Notes about VK_EXT_custom_resolve

Vulkan 1.4.333, released on November 14th, includes VK_EXT_custom_resolve , an extension that is closely related to the work we have been doing at Igalia to help Valve release the Steam Frame . It’s an extension that allows you to use a custom fragment shader to specify how to resolve a multisample image into a single-sample image, typically so the latter can be presented on screen. CTS tests for…