diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_curbe.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_curbe.c b/src/mesa/drivers/dri/i965/brw_curbe.c index c3d3b9d2131..d0ec8595c45 100644 --- a/src/mesa/drivers/dri/i965/brw_curbe.c +++ b/src/mesa/drivers/dri/i965/brw_curbe.c @@ -285,6 +285,19 @@ brw_upload_constant_buffer(struct brw_context *brw) */ emit: + /* Work around mysterious 965 hangs that appear to happen if you do + * two 3DPRIMITIVEs with only a CONSTANT_BUFFER inbetween. If we + * haven't already flushed for some other reason, explicitly do so. + * + * We've found no documented reason why this should be necessary. + */ + if (brw->gen == 4 && !brw->is_g4x && + (brw->state.dirty.brw & (BRW_NEW_BATCH | BRW_NEW_PSP)) == 0) { + BEGIN_BATCH(1); + OUT_BATCH(MI_FLUSH); + ADVANCE_BATCH(); + } + /* BRW_NEW_URB_FENCE: From the gen4 PRM, volume 1, section 3.9.8 * (CONSTANT_BUFFER (CURBE Load)): * |