mirror of
https://github.com/libsdl-org/SDL.git
synced 2026-02-17 00:54:06 +00:00
1558d52a0a
VULKAN_FindMemoryTypeIndex() tries first to get a perfectly matching memory type, then falls back to selecting any memory type which overlaps with the requested flags. However, some of the flags requested are actually required, so if -- for example -- we request a memory type with VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, but get one without it, all future calls to vkMapMemory() will fail with: ``` vkMapMemory(): Mapping memory without VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT set. Memory has type 0 which has properties VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT. The Vulkan spec states: memory must have been created with a memory type that reports VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT. ``` (This occurs, for instance, on the totally non-conformant hasvk driver for Intel Haswell integrated GPUs, which otherwise works fine.) Instead, make sure that any memory type found has a superset of the requested flags, so it'll always be appropriate. Of course, this makes it _less_ likely for a memory type to be found, so it does make #9130 worse in some ways. See the next patch for details. Signed-off-by: David Gow <david@ingeniumdigital.com>
Simple DirectMedia Layer (SDL) Version 3.0
Simple DirectMedia Layer is a cross-platform development library designed to provide low level access to audio, keyboard, mouse, joystick, and graphics hardware via OpenGL and Direct3D. It is used by video playback software, emulators, and popular games including Valve's award winning catalog and many Humble Bundle games.
More extensive documentation is available in the docs directory, starting with README.md. If you are migrating to SDL 3.0 from SDL 2.0, the changes are extensively documented in README-migration.md.
Enjoy!
Sam Lantinga (slouken@libsdl.org)