This is needed to implement the vulkan transform feedback pause
resume functionality
Acked-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7981>
for the purposes of the draw_auto stage. -1 means the buffer should
be appended to, and everything else sets the internal offset.
+* ``stream_output_target_offset`` Retrieve the internal stream offset from
+ an streamout target. This is used to implement Vulkan pause/resume support
+ which needs to pass the internal offset to the API.
+
NOTE: The currently-bound vertex or geometry shader must be compiled with
the properly-filled-in structure pipe_stream_output_info describing which
outputs should be written to buffers and how. The structure is part of
struct pipe_stream_output_target **targets,
const unsigned *offsets);
+ uint32_t (*stream_output_target_offset)(struct pipe_stream_output_target *target);
+
/*@}*/