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[dxvk] Tweaked command stream chunk sizes and submission

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Improves overall frame rate and latency in situations where the
application's render thread cannot keep up with the CS thread.
Considerable frametime improvements in NieR:Automata and
slightly higher frame rates in The Witcher 3.
This commit is contained in:
Philip Rebohle 2018-03-09 12:31:35 +01:00
parent 8d443cb50d
commit 220c3301cf
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GPG Key ID: C8CC613427A31C99
2 changed files with 4 additions and 7 deletions
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7
src/dxvk/dxvk_cs.cpp
View File

@ -57,12 +57,9 @@ namespace dxvk {
m_chunksQueued.push(std::move(chunk));
m_chunksPending += 1;
// If a large number of chunks are queued up, wait for
// some of them to be processed in order to avoid memory
// leaks, stuttering, input lag and similar issues.
if (m_chunksPending >= MaxChunksInFlight) {
if (m_chunksPending > MaxChunksInFlight) {
m_condOnSync.wait(lock, [this] {
return (m_chunksPending < MaxChunksInFlight / 2)
return (m_chunksPending <= MaxChunksInFlight )
|| (m_stopped.load());
});
}

4
src/dxvk/dxvk_cs.h
View File

@ -88,7 +88,7 @@ namespace dxvk {
* Stores a list of commands.
*/
class DxvkCsChunk : public RcObject {
constexpr static size_t MaxBlockSize = 65536;
constexpr static size_t MaxBlockSize = 16384;
public:
DxvkCsChunk();
@ -168,7 +168,7 @@ namespace dxvk {
class DxvkCsThread {
// Limit the number of chunks in the queue
// to prevent memory leaks, stuttering etc.
constexpr static uint32_t MaxChunksInFlight = 16;
constexpr static uint32_t MaxChunksInFlight = 32;
public:
DxvkCsThread(const Rc<DxvkContext>& context);