diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs_schedule_instructions.cpp | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs_schedule_instructions.cpp b/src/mesa/drivers/dri/i965/brw_fs_schedule_instructions.cpp index 00aa99de7f..c8f0b27b76 100644 --- a/src/mesa/drivers/dri/i965/brw_fs_schedule_instructions.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs_schedule_instructions.cpp @@ -438,6 +438,21 @@ instruction_scheduler::schedule_instructions(fs_inst *next_block_header) instructions.push_tail(child); } } + + /* Shared resource: the mathbox. There's one per EU (on later + * generations, it's even more limited pre-gen6), so if we send + * something off to it then the next math isn't going to make + * progress until the first is done. + */ + if (chosen->inst->is_math()) { + foreach_iter(exec_list_iterator, iter, instructions) { + schedule_node *n = (schedule_node *)iter.get(); + + if (n->inst->is_math()) + n->unblocked_time = MAX2(n->unblocked_time, + time + chosen->latency); + } + } } assert(instructions_to_schedule == 0); |