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GPU: Add a "low-power" state.

This commit is contained in:
Dr. Chat 2017-01-28 20:59:41 -06:00
parent a093fdcef8
commit d9b52d1afa
1 changed files with 9 additions and 5 deletions
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14
src/xenia/gpu/command_processor.cc
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@ -134,13 +134,17 @@ void CommandProcessor::WorkerThreadMain() {
// We spin here waiting for new ones, as the overhead of waiting on our
// event is too high.
PrepareForWait();
uint32_t loop_count = 0;
do {
// TODO(benvanik): if we go longer than Nms, switch to waiting?
// It'll keep us from burning power.
// const int wait_time_ms = 5;
// xe::threading::Wait(write_ptr_index_event_.get(), true,
// std::chrono::milliseconds(wait_time_ms));
// If we spin around too much, revert to a "low-power" state.
if (loop_count > 500) {
const int wait_time_ms = 5;
xe::threading::Wait(write_ptr_index_event_.get(), true,
std::chrono::milliseconds(wait_time_ms));
}
xe::threading::MaybeYield();
loop_count++;
write_ptr_index = write_ptr_index_.load();
} while (worker_running_ && pending_fns_.empty() &&
(write_ptr_index == 0xBAADF00D ||