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libretro: Add CPU overclock option

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This commit is contained in:
Connor McLaughlin 2020-10-01 00:02:01 +10:00
parent e1afa85258
commit 8edf02bca8
1 changed files with 17 additions and 1 deletions
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18
src/duckstation-libretro/libretro_host_interface.cpp
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@ -445,7 +445,7 @@ void LibretroHostInterface::OnSystemDestroyed()
m_using_hardware_renderer = false;
}
static std::array<retro_core_option_definition, 33> s_option_definitions = {{
static std::array<retro_core_option_definition, 34> s_option_definitions = {{
{"duckstation_Console.Region",
"Console Region",
"Determines which region/hardware to emulate. Auto-Detect will use the region of the disc inserted.",
@ -481,6 +481,15 @@ static std::array<retro_core_option_definition, 33> s_option_definitions = {{
"Which mode to use for CPU emulation. Recompiler provides the best performance.",
{{"Interpreter", "Interpreter"}, {"CachedIntepreter", "Cached Interpreter"}, {"Recompiler", "Recompiler"}},
"Recompiler"},
{"duckstation_CPU.Overclock",
"CPU Overclocking",
"Runs the emulated CPU faster or slower than native speed, which can improve framerates in some games. Will break "
"other games and increase system requirements, use with caution.",
{{"25", "25%"}, {"50", "50%"}, {"100", "100% (Default)"}, {"125", "125%"}, {"150", "150%"},
{"175", "175%"}, {"200", "200%"}, {"225", "225%"}, {"250", "250%"}, {"275", "275%"},
{"300", "300%"}, {"350", "350%"}, {"400", "400%"}, {"450", "450%"}, {"500", "500%"},
{"600", "600%"}, {"700", "700%"}, {"800", "800%"}, {"900", "900%"}, {"1000", "1000%"}},
"100"},
{"duckstation_CPU.RecompilerICache",
"CPU Recompiler ICache",
"Determines whether the CPU's instruction cache is simulated in the recompiler. Improves accuracy at a small cost "
@ -712,6 +721,13 @@ void LibretroHostInterface::LoadSettings()
LibretroSettingsInterface si;
HostInterface::LoadSettings(si);
// turn percentage into fraction for overclock
const u32 overclock_percent = static_cast<u32>(std::max(si.GetIntValue("CPU", "Overclock", 100), 1));
Settings::CPUOverclockPercentToFraction(overclock_percent, &g_settings.cpu_overclock_numerator,
&g_settings.cpu_overclock_denominator);
g_settings.cpu_overclock_enable = (overclock_percent != 100);
g_settings.UpdateOverclockActive();
// Ensure we don't use the standalone memcard directory in shared mode.
for (u32 i = 0; i < NUM_CONTROLLER_AND_CARD_PORTS; i++)
g_settings.memory_card_paths[i] = GetSharedMemoryCardPath(i);