* Initial test for texture sync
* WIP new texture flushing setup
* Improve rules for incompatible overlaps
Fixes a lot of issues with Unreal Engine games. Still a few minor issues (some caused by dma fast path?) Needs docs and cleanup.
* Cleanup, improvements
Improve rules for fast DMA
* Small tweak to group together flushes of overlapping handles.
* Fixes, flush overlapping texture data for ASTC and BC4/5 compressed textures.
Fixes the new Life is Strange game.
* Flush overlaps before init data, fix 3d texture size/overlap stuff
* Fix 3D Textures, faster single layer flush
Note: nosy people can no longer merge this with Vulkan. (unless they are nosy enough to implement the new backend methods)
* Remove unused method
* Minor cleanup
* More cleanup
* Use the More Fun and Hopefully No Driver Bugs method for getting compressed tex too
This one's for metro
* Address feedback, ASTC+ETC to FormatClass
* Change offset to use Span slice rather than IntPtr Add
* Fix this too
* Return mapped buffer pointer directly for flush, WriteableRegion for textures
A few changes here to generally improve performance, even for platforms not using the persistent buffer flush.
- Texture and buffer flush now return a ReadOnlySpan<byte>. It's guaranteed that this span is pinned in memory, but it will be overwritten on the next flush from that thread, so it is expected that the data is used before calling again.
- As a result, persistent mappings no longer copy to a new array - rather the persistent map is returned directly as a Span<>. A similar host array is used for the glGet flushes instead of allocating new arrays each time.
- Texture flushes now do their layout conversion into a WriteableRegion when the texture is not MultiRange, which allows the flush to happen directly into guest memory rather than into a temporary span, then copied over. This avoids another copy when doing layout conversion.
Overall, this saves 1 data copy for buffer flush, 1 copy for linear textures with matching source/target stride, and 2 copies for block textures or linear textures with mismatching strides.
* Fix tests
* Fix array pointer for Mesa/Intel path
* Address some feedback
* Update method for getting array pointer.
It seems like this method of flushing data is much slower on Mesa drivers, and slightly slower on Intel Windows. Have not tested Intel Mesa, but I'm assuming it is the same as AMD.
This also adds vendor detection for AMD on Unix, which counted as "Unknown" before.
