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video_core: Block in WaitFence.

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This function is called rarely and blocks quite often for a long time.
So don't waste power and let the CPU sleep.

This might also increase the performance as the other cores might be allowed to clock higher.
This commit is contained in:
Markus Wick 2019-12-30 13:03:20 +01:00
parent b6825f4b37
commit 4bdaebe33e
3 changed files with 9 additions and 5 deletions
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7
src/video_core/gpu.cpp
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@ -66,19 +66,20 @@ const DmaPusher& GPU::DmaPusher() const {
return *dma_pusher;
}
void GPU::WaitFence(u32 syncpoint_id, u32 value) const {
void GPU::WaitFence(u32 syncpoint_id, u32 value) {
// Synced GPU, is always in sync
if (!is_async) {
return;
}
MICROPROFILE_SCOPE(GPU_wait);
while (syncpoints[syncpoint_id].load(std::memory_order_relaxed) < value) {
}
std::unique_lock lock{sync_mutex};
sync_cv.wait(lock, [=]() { return syncpoints[syncpoint_id].load() >= value; });
}
void GPU::IncrementSyncPoint(const u32 syncpoint_id) {
syncpoints[syncpoint_id]++;
std::lock_guard lock{sync_mutex};
sync_cv.notify_all();
if (!syncpt_interrupts[syncpoint_id].empty()) {
u32 value = syncpoints[syncpoint_id].load();
auto it = syncpt_interrupts[syncpoint_id].begin();