diff options
| -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 4b1ba367341..64282916009 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 |