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Framerate unlock test
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Integrates Altimor's work on FPS uncap.

Interaction with FMVs is unknown, but the results are likely less than ideal.
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@Kaldaien
Kaldaien authored Mar 28, 2017
1 parent 631fe26 commit 43e367f
Showing 1 changed file with 166 additions and 16 deletions.
182 changes: 166 additions & 16 deletions nier.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,22 @@
#include <atlbase.h>


struct game_state_s {
DWORD* pMenu = (DWORD *)0x1418F39C4;
DWORD* pLoading = (DWORD *)0x141975520;

bool capped = true;

bool needFPSCap (void) {
return (*pMenu != 0) || (*pLoading != 0);
}

void capFPS (void);
void uncapFPS (void);
} game_state;



#define SK_LOG0 if (config.system.log_level >= 1) dll_log.Log
#define SK_LOG1 if (config.system.log_level >= 2) dll_log.Log
#define SK_LOG2 if (config.system.log_level >= 3) dll_log.Log
Expand All @@ -30,6 +46,7 @@ wchar_t far_prefs_file [MAX_PATH] = { L'\0' };
sk::ParameterInt* far_gi_workgroups = nullptr;
sk::ParameterInt* far_bloom_width = nullptr;
sk::ParameterBool* far_limiter_busy = nullptr;
sk::ParameterBool* far_slow_state_cache = nullptr;
sk::ParameterBool* far_rtss_warned = nullptr;
sk::ParameterBool* far_osd_disclaimer = nullptr;

Expand All @@ -42,7 +59,7 @@ extern void
__stdcall
SK_SetPluginName (std::wstring name);

#define FAR_VERSION_NUM L"0.3.0"
#define FAR_VERSION_NUM L"0.4.0"
#define FAR_VERSION_STR L"FAR v " FAR_VERSION_NUM


Expand Down Expand Up @@ -205,7 +222,8 @@ SK_FAR_SetLimiterWait (SK_FAR_WaitBehavior behavior)
DWORD dwProtect;
VirtualProtect (wait_addr, 6, PAGE_EXECUTE_READWRITE, &dwProtect);

// Hard coded for now,
// Hard coded for now; safe to do this without pausing threads and flushing caches
// because the config UI runs from the only thread that the game framerate limits.
switch (behavior)
{
case SK_FAR_WaitBehavior::Busy:
Expand Down Expand Up @@ -238,9 +256,40 @@ SK_FAR_BeginFrame (void)
{
SK_BeginFrame_Original ();

SK_DrawExternalOSD ( "FAR", " Press Ctrl + Shift + O to toggle In-Game OSD\n"
" Press Ctrl + Shift + Backspace to access In-Game Config Menu\n\n"
" * This message will go away the first time you actually read it and successfully toggle the OSD.\n" );
if (far_osd_disclaimer->get_value ())
SK_DrawExternalOSD ( "FAR", " Press Ctrl + Shift + O to toggle In-Game OSD\n"
" Press Ctrl + Shift + Backspace to access In-Game Config Menu\n\n"
" * This message will go away the first time you actually read it and successfully toggle the OSD.\n" );
else if (config.system.log_level > 0)
{
std::string state = "";

if (game_state.needFPSCap ()) {
state += "< Needs Cap :";
if (*game_state.pLoading) state += " loading ";
if (*game_state.pMenu) state += " menu ";
state += ">";
}

if (game_state.capped)
state += " { Capped }";
else
state += " { Uncapped }";

SK_DrawExternalOSD ( "FAR", state);
}

if (game_state.needFPSCap () && (! game_state.capped))
{
game_state.capFPS ();
game_state.capped = true;
}

if ((! game_state.needFPSCap ()) && game_state.capped)
{
game_state.uncapFPS ();
game_state.capped = false;
}
}


Expand All @@ -250,18 +299,9 @@ DWORD
WINAPI
SK_FAR_OSD_Disclaimer (LPVOID user)
{
SK_CreateFuncHook ( L"SK_BeginBufferSwap", SK_BeginBufferSwap,
SK_FAR_BeginFrame,
(LPVOID *)&SK_BeginFrame_Original );

SK_EnableHook (SK_BeginBufferSwap);

while (config.osd.show)
Sleep (66);

SK_DisableHook (SK_BeginBufferSwap);
SK_RemoveHook (SK_BeginBufferSwap);

SK_DrawExternalOSD ( "FAR", "" );

far_osd_disclaimer->set_value (false);
Expand All @@ -280,8 +320,6 @@ SK_FAR_FirstFrame (void)
{
if (! SK_IsInjected ())
{
SK_FAR_CheckVersion (nullptr);

bool busy_wait = far_limiter_busy->get_value ();

SK_FAR_SetLimiterWait ( busy_wait ? SK_FAR_WaitBehavior::Busy :
Expand Down Expand Up @@ -578,6 +616,9 @@ SK_FAR_Draw (
void
SK_FAR_InitPlugin (void)
{
if (! SK_IsInjected ())
SK_FAR_CheckVersion (nullptr);

SK_SetPluginName (FAR_VERSION_STR);

SK_CreateFuncHook ( L"ID3D11Device::CreateBuffer",
Expand Down Expand Up @@ -646,6 +687,23 @@ SK_FAR_InitPlugin (void)
far_rtss_warned->store ();
}

far_slow_state_cache =
static_cast <sk::ParameterBool *>
(far_factory.create_parameter <bool> (L"Disable D3D11.1 Interop Stateblocks"));

extern bool SK_DXGI_SlowStateCache;

if (! far_slow_state_cache->load ())
SK_DXGI_SlowStateCache = true;
else
SK_DXGI_SlowStateCache = far_slow_state_cache->get_value ();

config.render.dxgi.slow_state_cache = SK_DXGI_SlowStateCache;

far_slow_state_cache->set_value (SK_DXGI_SlowStateCache);
far_slow_state_cache->store ();


far_osd_disclaimer =
static_cast <sk::ParameterBool *>
(far_factory.create_parameter <bool> (L"OSD Disclaimer Dismissed"));
Expand Down Expand Up @@ -677,6 +735,19 @@ SK_FAR_InitPlugin (void)

__FAR_BloomWidth = far_bloom_width->get_value ();

// Bloom Width must be > 0 or -1, never 0!
if (__FAR_BloomWidth <= 0) {
__FAR_BloomWidth = -1;
far_bloom_width->set_value (__FAR_BloomWidth);
far_bloom_width->store ( );
}


SK_CreateFuncHook ( L"SK_BeginBufferSwap", SK_BeginBufferSwap,
SK_FAR_BeginFrame,
(LPVOID *)&SK_BeginFrame_Original );
MH_QueueEnableHook (SK_BeginBufferSwap);


far_prefs->write (far_prefs_file);

Expand Down Expand Up @@ -790,6 +861,7 @@ SK_FAR_ControlPanel (void)
ImGui::EndTooltip ();
}

#if 0
bool busy_wait = (wait_behavior == SK_FAR_WaitBehavior::Busy);

if (ImGui::Checkbox ("Use Busy-Wait Framerate Limiter", &busy_wait))
Expand All @@ -807,6 +879,7 @@ SK_FAR_ControlPanel (void)

if (ImGui::IsItemHovered ())
ImGui::SetTooltip ("Increase CPU load on render thread in exchange for less hitching");
#endif

bool expanded_bloom = ImGui::TreeNode ("Bloom");

Expand Down Expand Up @@ -843,6 +916,10 @@ SK_FAR_ControlPanel (void)

if (ImGui::InputInt ("Width", &width))
{
// Clamp values, 0 will crash!
if (width <= 0)
width = -1;

far_bloom_width->set_value (width);
far_bloom_width->store ();

Expand All @@ -863,3 +940,76 @@ SK_FAR_IsPlugIn (void)
{
return far_prefs != nullptr;
}


#define mbegin(addr, len) \
VirtualProtect ( \
addr, \
len, \
PAGE_EXECUTE_READWRITE, \
&old_protect_mask \
);

#define mend(addr, len) \
VirtualProtect ( \
addr, \
len, \
old_protect_mask, \
&old_protect_mask \
);



uint8_t* psleep = (uint8_t *)0x14092E887;
uint8_t* pspinlock = (uint8_t *)0x14092E8CF;
uint8_t* pmin_tstep = (uint8_t *)0x140805DEC;
uint8_t* pmax_tstep = (uint8_t *)0x140805E18;

void
game_state_s::uncapFPS (void)
{
DWORD old_protect_mask;

SK_FAR_SetLimiterWait (SK_FAR_WaitBehavior::Busy);

mbegin (pspinlock, 2)
memset (pspinlock, 0x90, 2);
mend (pspinlock, 2)

mbegin (pmin_tstep, 1)
*pmin_tstep = 0xEB;
mend (pmin_tstep, 1)

mbegin (pmax_tstep, 2)
pmax_tstep [0] = 0x90;
pmax_tstep [1] = 0xE9;
mend (pmax_tstep, 2)
}



void
game_state_s::capFPS (void)
{
DWORD old_protect_mask;

SK_FAR_SetLimiterWait (SK_FAR_WaitBehavior::Sleep);

mbegin (pspinlock, 2)
pspinlock [0] = 0x77;
pspinlock [1] = 0x9F;
mend (pspinlock, 2)

mbegin (pmin_tstep, 1)
*pmin_tstep = 0x73;
mend (pmin_tstep, 1)

mbegin (pmax_tstep, 2)
pmax_tstep [0] = 0x0F;
pmax_tstep [1] = 0x86;
mend (pmax_tstep, 2)
}


#undef mbegin
#undef mend

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