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libretro: expose large_screen_proportion as a core option (#1833)

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Adds the large_screen_proportion setting to libretro core options,
allowing users to adjust the ratio between the large and small screens
in the "Large Screen, Small Screen" layout.

This is useful on devices like the Steam Deck where the default 4x ratio
makes the small screen too tiny to be practical.

Values range from 1.00x to 6.00x in 0.25 increments.

Closes #1832
This commit is contained in:
Fausto Núñez Alberro 2026-03-07 16:44:27 +01:00 committed by GitHub
parent 748b97ac5e
commit 1b41c78afc
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GPG Key ID: B5690EEEBB952194
1 changed files with 40 additions and 0 deletions
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40
src/citra_libretro/core_settings.cpp
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@ -70,6 +70,8 @@ namespace layout {
static constexpr const char* layout_option = citra_setting(BaseKeys::layout_option);
static constexpr const char* swap_screen = citra_setting(BaseKeys::swap_screen);
static constexpr const char* swap_screen_mode = citra_setting(BaseKeys::swap_screen_mode);
static constexpr const char* large_screen_proportion =
citra_setting(BaseKeys::large_screen_proportion);
} // namespace layout
namespace storage {
@ -483,6 +485,40 @@ static constexpr retro_core_option_v2_definition option_definitions[] = {
},
"Toggle"
},
{
config::layout::large_screen_proportion,
"Large Screen Proportion",
"Large Screen Proportion",
"How many times larger the main screen is compared to the small screen "
"in the Large Screen layout.",
nullptr,
config::category::layout,
{
{ "1.00", "1.00x (Equal Size)" },
{ "1.25", "1.25x" },
{ "1.50", "1.50x" },
{ "1.75", "1.75x" },
{ "2.00", "2.00x" },
{ "2.25", "2.25x" },
{ "2.50", "2.50x" },
{ "2.75", "2.75x" },
{ "3.00", "3.00x" },
{ "3.25", "3.25x" },
{ "3.50", "3.50x" },
{ "3.75", "3.75x" },
{ "4.00", "4.00x (Default)" },
{ "4.25", "4.25x" },
{ "4.50", "4.50x" },
{ "4.75", "4.75x" },
{ "5.00", "5.00x" },
{ "5.25", "5.25x" },
{ "5.50", "5.50x" },
{ "5.75", "5.75x" },
{ "6.00", "6.00x" },
{ nullptr, nullptr }
},
"4.00"
},
// Storage Category
{
@ -920,6 +956,10 @@ static void ParseLayoutOptions(void) {
LibRetro::settings.swap_screen_mode =
LibRetro::FetchVariable(config::layout::swap_screen_mode, "Toggle");
auto large_screen_proportion =
LibRetro::FetchVariable(config::layout::large_screen_proportion, "4.00");
Settings::values.large_screen_proportion = std::stof(large_screen_proportion);
}
static void ParseStorageOptions(void) {