From 02bf35aaf6dd7b6211237fb19a8a19dbf4fc6dc2 Mon Sep 17 00:00:00 2001
From: David Griswold <novachild@gmail.com>
Date: Thu, 25 Sep 2025 13:17:21 +0300
Subject: [PATCH] enable for android

---
 .../citra_emu/features/settings/model/BooleanSetting.kt  | 1 +
 .../features/settings/ui/SettingsFragmentPresenter.kt    | 9 +++++++++
 src/android/app/src/main/jni/config.cpp                  | 1 +
 src/android/app/src/main/jni/default_ini.h               | 4 ++++
 src/android/app/src/main/res/values/strings.xml          | 2 ++
 5 files changed, 17 insertions(+)

diff --git a/src/android/app/src/main/java/org/citra/citra_emu/features/settings/model/BooleanSetting.kt b/src/android/app/src/main/java/org/citra/citra_emu/features/settings/model/BooleanSetting.kt
index 11f55d184..77d11c873 100644
--- a/src/android/app/src/main/java/org/citra/citra_emu/features/settings/model/BooleanSetting.kt
+++ b/src/android/app/src/main/java/org/citra/citra_emu/features/settings/model/BooleanSetting.kt
@@ -33,6 +33,7 @@ enum class BooleanSetting(
     LLE_APPLETS("lle_applets", Settings.SECTION_SYSTEM, false),
     NEW_3DS("is_new_3ds", Settings.SECTION_SYSTEM, true),
     LINEAR_FILTERING("filter_mode", Settings.SECTION_RENDERER, true),
+    USE_INTEGER_SCALING("use_integer_scaling",Settings.SECTION_RENDERER, false),
     SHADERS_ACCURATE_MUL("shaders_accurate_mul", Settings.SECTION_RENDERER, false),
     DISK_SHADER_CACHE("use_disk_shader_cache", Settings.SECTION_RENDERER, true),
     DUMP_TEXTURES("dump_textures", Settings.SECTION_UTILITY, false),
diff --git a/src/android/app/src/main/java/org/citra/citra_emu/features/settings/ui/SettingsFragmentPresenter.kt b/src/android/app/src/main/java/org/citra/citra_emu/features/settings/ui/SettingsFragmentPresenter.kt
index d4baf6166..c08423c2c 100644
--- a/src/android/app/src/main/java/org/citra/citra_emu/features/settings/ui/SettingsFragmentPresenter.kt
+++ b/src/android/app/src/main/java/org/citra/citra_emu/features/settings/ui/SettingsFragmentPresenter.kt
@@ -883,6 +883,15 @@ class SettingsFragmentPresenter(private val fragmentView: SettingsFragmentView)
                     IntSetting.RESOLUTION_FACTOR.key,
                     IntSetting.RESOLUTION_FACTOR.defaultValue
                 )
+            )
+             add(
+                SwitchSetting(
+                    BooleanSetting.USE_INTEGER_SCALING,
+                    R.string.use_integer_scaling,
+                    R.string.use_integer_scaling_description,
+                    BooleanSetting.USE_INTEGER_SCALING.key,
+                    BooleanSetting.USE_INTEGER_SCALING.defaultValue
+                )
             )
             add(
                 SwitchSetting(
diff --git a/src/android/app/src/main/jni/config.cpp b/src/android/app/src/main/jni/config.cpp
index 9ac9f3737..753864bc3 100644
--- a/src/android/app/src/main/jni/config.cpp
+++ b/src/android/app/src/main/jni/config.cpp
@@ -168,6 +168,7 @@ void Config::ReadValues() {
     Settings::values.pp_shader_name =
         sdl2_config->GetString("Renderer", "pp_shader_name", default_shader);
     ReadSetting("Renderer", Settings::values.filter_mode);
+    ReadSetting("Renderer",Settings::values.use_integer_scaling);
 
     ReadSetting("Renderer", Settings::values.bg_red);
     ReadSetting("Renderer", Settings::values.bg_green);
diff --git a/src/android/app/src/main/jni/default_ini.h b/src/android/app/src/main/jni/default_ini.h
index 5bedfa319..ed5a46157 100644
--- a/src/android/app/src/main/jni/default_ini.h
+++ b/src/android/app/src/main/jni/default_ini.h
@@ -148,6 +148,10 @@ use_disk_shader_cache =
 # factor for the 3DS resolution
 resolution_factor =
 
+# Use Integer Scaling when the layout allows
+# 0: Off (default), 1: On
+use_integer_scaling =
+
 # Whether to enable V-Sync (caps the framerate at 60FPS) or not.
 # 0 (default): Off, 1: On
 vsync_enabled =
diff --git a/src/android/app/src/main/res/values/strings.xml b/src/android/app/src/main/res/values/strings.xml
index 078113f12..284c3af67 100644
--- a/src/android/app/src/main/res/values/strings.xml
+++ b/src/android/app/src/main/res/values/strings.xml
@@ -242,6 +242,8 @@
     <string name="async_shaders_description">Compiles shaders in the background to reduce stuttering during gameplay. When enabled expect temporary graphical glitches</string>
     <string name="linear_filtering">Linear Filtering</string>
     <string name="linear_filtering_description">Enables linear filtering, which causes game visuals to appear smoother.</string>
+    <string name="use_integer_scaling">Integer Scaling</string>
+    <string name="use_integer_scaling_description">Scales the screens with an integer multiplier of the original 3DS screen. For layouts with two different screen sizes, the largest screen is integer-scaled.</string>
     <string name="texture_filter_name">Texture Filter</string>
     <string name="texture_filter_description">Enhances the visuals of applications by applying a filter to textures. The supported filters are Anime4K Ultrafast, Bicubic, ScaleForce, xBRZ freescale, and MMPX.</string>
     <string name="delay_render_thread">Delay Game Render Thread</string>