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gallium: add a cond rendering hook for vulkan.

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The vulkan cond rendering hook is quite different than the
traditional gallium one so add a new interface for it.

This just conditionalises rendering on the memory location.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8182>
This commit is contained in:
Dave Airlie
2020-12-04 17:27:16 +10:00
parent a57361ae02
commit 86328fc7b7
2 changed files with 13 additions and 0 deletions
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docs/gallium/context.rst
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@@ -563,6 +563,9 @@ Normally, if the occlusion query returned a non-zero result subsequent
drawing happens normally so fragments may be generated, shaded and
processed even where they're known to be obscured.
The ''render_condition_mem'' function specifies the drawing is dependant
on a value in memory. A buffer resource and offset denote which 32-bit
value to use for the query. This is used for Vulkan API.
Flushing
^^^^^^^^