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vkd3d: Ignore DiscardResource for committed resources. 

Not required for correctness.

Signed-off-by: Hans-Kristian Arntzen <post@arntzen-software.no>
This commit is contained in:
Hans-Kristian Arntzen 2021-09-23 18:01:08 +02:00
parent 7139b4de83
commit d38544e0a2
1 changed files with 7 additions and 0 deletions
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7
libs/vkd3d/command.c
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@ -8283,6 +8283,13 @@ static void STDMETHODCALLTYPE d3d12_command_list_DiscardResource(d3d12_command_l
return;
}
/* Only care about resources which could alias memory with something else.
* We only need to transition committed resources once,
* and render targets tend to be that.
* There are no particular performance benefits in using DiscardResource as far as I know ... */
if (!d3d12_resource_may_alias_other_resources(texture))
return;
/* Assume that pRegion == NULL means that we should discard
* the entire resource. This does not seem to be documented. */
resource_subresource_count = d3d12_resource_get_sub_resource_count(texture);