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| author | Iago Toral Quiroga <itoral@igalia.com> | 2014-06-03 12:25:08 +0200 |
|---|---|---|
| committer | Iago Toral Quiroga <itoral@igalia.com> | 2014-06-30 08:08:50 +0200 |
| commit | 9650293b51b23b86f4fcf6875e1801555fa235d0 (patch) | |
| tree | 77406c1c075634e99b5613bcea8e3d956a5ebb25 | |
| parent | 6d3632c9c9c58f8fe1bae26871432342ccaaaf4b (diff) | |
| download | external_mesa3d-9650293b51b23b86f4fcf6875e1801555fa235d0.zip external_mesa3d-9650293b51b23b86f4fcf6875e1801555fa235d0.tar.gz external_mesa3d-9650293b51b23b86f4fcf6875e1801555fa235d0.tar.bz2 | |
i965/gs: Set number of control data bits for stream mode.
If the geometry shader is indeed using streams then we need 2 control data
bits per vertex for the StreamID. If the shader is not using streams then
we don't need control data bits.
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vec4_gs.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_gs.c b/src/mesa/drivers/dri/i965/brw_vec4_gs.c index 4b1ba36..6428291 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4_gs.c +++ b/src/mesa/drivers/dri/i965/brw_vec4_gs.c @@ -81,10 +81,11 @@ do_gs_prog(struct brw_context *brw, */ c.prog_data.control_data_format = GEN7_GS_CONTROL_DATA_FORMAT_GSCTL_SID; - /* However, StreamID is not yet supported, so we output zero bits of - * control data per vertex. - */ - c.control_data_bits_per_vertex = 0; + /* We only have to emit control bits if we are using streams */ + if (prog->Geom.UsesStreams) + c.control_data_bits_per_vertex = 2; + else + c.control_data_bits_per_vertex = 0; } else { /* When the output type is triangle_strip or line_strip, EndPrimitive() * may be used to terminate the current strip and start a new one |