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st/mesa: Replace UsesStreams by ActiveStreamMask for GS

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Some drivers need to know which streams are used by a geometry
shader. Adding a mask of active streams makes the use of
UsesStreams superfluous as it's the equivalent of:

    ActiveStreamMask != (1 << 0)

Signed-off-by: Louis-Francis Ratté-Boulianne <lfrb@collabora.com>
Reviewed-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5984>
This commit is contained in:
Louis-Francis Ratté-Boulianne
2020-03-19 04:59:27 -04:00
committed by Marge Bot
parent ab5a36b342
commit 7dcb1d272f
8 changed files with 36 additions and 34 deletions
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4
src/intel/compiler/brw_vec4_gs_visitor.cpp
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@@ -667,8 +667,8 @@ brw_compile_gs(const struct brw_compiler *compiler, void *log_data,
*/
prog_data->control_data_format = GEN7_GS_CONTROL_DATA_FORMAT_GSCTL_SID;
/* We only have to emit control bits if we are using streams */
if (shader->info.gs.uses_streams)
/* We only have to emit control bits if we are using non-zero streams */
if (shader->info.gs.active_stream_mask != (1 << 0))
c.control_data_bits_per_vertex = 2;
else
c.control_data_bits_per_vertex = 0;