Iago Toral Quiroga
a46547671b
If we have dirty descriptor set state we have to update our uniform
data to reference the new resources such as addresses for textures
or UBOs. This is known to have a high CPU cost, so we want to limit
this as much as we can.
It is a common rendering pattern in applications to render many objects
using the same pipeline, but modifying the descriptor sets bound to update
textures, UBOs, etc. In this scenario, we would be incurring in unnecessary
uniform stream updates for stages that don't access descriptor sets at all.
This change makes it so we track which shader stages in a pipeline
use descriptor set state and skips updating uniform streams for them
when dirty descriptor set state is the only reason requiring us to
generate new uniform streams for a draw call.
v2: reuse shader stage information from the pipeline set layouts
to track shader stages that use descriptor state.
Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8555>
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