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Hack against RTSS

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This commit is contained in:
FakeMichau
2024-09-14 17:46:53 +02:00
parent e438ae5a95
commit 22a1d4a3b7
2 changed files with 35 additions and 0 deletions
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OptiScaler/nvapi/fakenvapi/fakenvapi.cpp
+16
View File
@@ -335,6 +335,10 @@ namespace nvd {
NvAPI_Status __cdecl NvAPI_D3D_SetLatencyMarker(IUnknown* pDev, NV_LATENCY_MARKER_PARAMS* pSetLatencyMarkerParams) {
if (!pDev)
return Error();
if (lowlatency_ctx.ignore_frameid(pSetLatencyMarkerParams->frameID))
return NVAPI_OK;
spdlog::debug("markerType: {}, frame id: {}", (unsigned int)pSetLatencyMarkerParams->markerType, (unsigned long long)pSetLatencyMarkerParams->frameID);
lowlatency_ctx.init_al2(pDev);
switch (pSetLatencyMarkerParams->markerType) {
@@ -357,6 +361,15 @@ namespace nvd {
NvAPI_Status __cdecl NvAPI_D3D_Sleep(IUnknown* pDevice) {
if (!pDevice)
return Error();
// HACK for RTSS injecting markers and sleep even when a game sends them already
// TODO: option to reset the accepted_thread_id?
static std::thread::id accepted_thread_id = std::this_thread::get_id();
std::thread::id current_thread_id = std::this_thread::get_id();
spdlog::trace("Sleep called");
if (accepted_thread_id != current_thread_id && lowlatency_ctx.is_double_markers())
return NVAPI_OK; // skip that thread
lowlatency_ctx.init_al2(pDevice);
lowlatency_ctx.call_spot = SleepCall;
spdlog::debug("LowLatency update called on sleep with result: {}", lowlatency_ctx.update());
@@ -535,6 +548,9 @@ namespace nvd {
}
NvAPI_Status __cdecl NvAPI_D3D12_SetAsyncFrameMarker(ID3D12CommandQueue* pCommandQueue, NV_ASYNC_FRAME_MARKER_PARAMS* pSetAsyncFrameMarkerParams) {
if (lowlatency_ctx.ignore_frameid(pSetAsyncFrameMarkerParams->frameID))
return NVAPI_OK;
if (pSetAsyncFrameMarkerParams->markerType == OUT_OF_BAND_PRESENT_START) {
constexpr unsigned int history_size = 10;
static NvU64 counter = 0;
OptiScaler/nvapi/fakenvapi/lowlatency.h
+19
View File
@@ -55,6 +55,7 @@ class LowLatency {
unsigned long min_interval_us = 0;
bool al_available = false;
bool force_latencyflex = false;
bool double_markers = false;
ForceReflex force_reflex = InGame;
static inline uint64_t GetTimestamp() {
@@ -194,4 +195,22 @@ public:
Mode get_mode() {
return mode;
}
bool is_double_markers() {
return double_markers;
}
bool ignore_frameid(uint64_t frameid) {
constexpr uint64_t allowed_frameid_gap = 64;
static uint64_t max_frameid = allowed_frameid_gap;
if (bool result = frameid > max_frameid + allowed_frameid_gap; result) {
if (!double_markers)
spdlog::warn("Double reflex latency markers detected, disable RTSS!");
double_markers = true;
return result;
} else {
if (frameid > max_frameid) max_frameid = frameid;
return result;
}
}
};