[PATCH vkd3d 01/13] vkd3d: Store view properties in vkd3d_view.

Conor McCarthy conor.mccarthy.444 at gmail.com
Mon Nov 11 22:19:23 CST 2019

On Tue, Nov 12, 2019 at 2:40 AM Philip Rebohle <
philip.rebohle at tu-dortmund.de> wrote:

> Moving this out of d3d12_desc also helps make copying and
> traversing descriptor arrays more CPU cache-friendly.

Making descriptors smaller would help, but the most likely cause of a cache
miss is accessing two objects located far apart in memory. Reading data
from a descriptor and then other data via a view pointer creates this
situation. I made a new version of the cache coherence patch which
eliminates use of vkd3d_view for CBV, SRV and UAV descriptors and only
stores a refcount on the heap, but haven't sent it because it conflicts
with a pending patch. It only gains 0.5% fps, so if new implementations
need an expanded view struct instead then that takes precedence. CPU
caching is worth taking into account though.

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