Hash :
4d317b52
Author :
Date :
2024-03-22T15:48:51
Vulkan: Add MSRTSS preferred usage for tex init
The image create flag related to multisampled render to single-
sampled was used when this feature flag was enabled. However, this
could lead to some platforms allocating extra memory for the image,
even if the image did not use this feature.
In this change, a new feature is added regarding whether to prefer this
flag from the start. If disabled, ANGLE will only use this bit for the
texture if it is actually bound to an MSRTT framebuffer object (through
FramebufferTexture2DMultisampleEXT()).
* Added a new feature: preferMSRTSSFlagByDefault
* If enabled, the MSRTSS is used for all image inits.
* (TextureVk::initImage())
* Otherwise, it will create the image without the flag at first.
* Added member to texture frontend to track if the texture has been
bound to an MSRTT framebuffer.
* mHasBeenBoundToMSRTTFramebuffer
* During TextureVk::syncState(), if the image without the MSRTSS bit
is bound to an MSRTT framebuffer, it is recreated using the
MSRTSS flag.
* Checked in respecifyImageStorageIfNecessary().
Bug: b/329911999
Bug: angleproject:8622
Change-Id: I5e7d43e3828ae272441d65b2be35d09b23b68f84
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5402978
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Charlie Lao <cclao@google.com>
Commit-Queue: Amirali Abdolrashidi <abdolrashidi@google.com>