mesa/src/gfxstream/codegen
Yahan Zhou 362ffb5f81 Snapshot vk image content in common situation
This commit snapshots vk image content by allocating a staging buffer
and copying the bytes on snapshot. It only works in the simplest setup.
Many situations are not considered in this commit, they include:

(1) the image does not support VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL
layout;
(2) the image does not support VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL
layout;
(3) the queue is dirty.

Also there is no performance optimization.

Implementation-wise, snapshot happens in VkDecoderGlobalState after
recording / playing back all create / bind commands. It borrows an
existing queue to run the extra vk copy commands. A temporary staging
buffer is also created for copying. Later we could optimize the code
by reusing most of the temporary objects.

Reviewed-by: Aaron Ruby <aruby@blackberry.com>
Acked-by: Yonggang Luo <luoyonggang@gmail.com>
Acked-by: Adam Jackson <ajax@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27246>
2024-09-19 20:06:00 +00:00
..
scripts Snapshot vk image content in common situation 2024-09-19 20:06:00 +00:00
xml Use old en/decoding for vkQueueSignalReleaseImage 2024-09-19 20:05:59 +00:00