From 10e4187a7674f7e3b0a280128e4e66a0091cc71b Mon Sep 17 00:00:00 2001
From: SerpentSpirale <mathiasboulay@free.fr>
Date: Thu, 6 Jan 2022 23:58:52 +0100
Subject: [PATCH] New eXperimental option: force gles 1

---
 .../net/kdt/pojavlaunch/prefs/LauncherPreferences.java     | 2 ++
 .../src/main/java/net/kdt/pojavlaunch/utils/JREUtils.java  | 6 +++++-
 app_pojavlauncher/src/main/res/values/strings.xml          | 2 ++
 app_pojavlauncher/src/main/res/xml/pref_experimental.xml   | 7 +++++++
 4 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/prefs/LauncherPreferences.java b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/prefs/LauncherPreferences.java
index d4dbe951d..f005a4389 100644
--- a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/prefs/LauncherPreferences.java
+++ b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/prefs/LauncherPreferences.java
@@ -37,6 +37,7 @@ public class LauncherPreferences
     public static String PREF_GLES_SHRINK_HACK = "0";
     public static boolean PREF_VBO_DISABLE_HACK = false;
     public static boolean PREF_VIRTUAL_MOUSE_START = false;
+    public static boolean PREF_OPENGL_VERSION_HACK = false;
 
 
     public static void loadPreferences(Context ctx) {
@@ -69,6 +70,7 @@ public class LauncherPreferences
         PREF_GLES_SHRINK_HACK = DEFAULT_PREF.getString("gl4es_shrink_hack", "0");
         PREF_VBO_DISABLE_HACK = DEFAULT_PREF.getBoolean("vbo_disable_hack", false);
         PREF_VIRTUAL_MOUSE_START = DEFAULT_PREF.getBoolean("mouse_start", false);
+        PREF_OPENGL_VERSION_HACK = DEFAULT_PREF.getBoolean("gles_version_hack", false);
 
 /*
         if (PREF_CUSTOM_JAVA_ARGS.isEmpty()) {
diff --git a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/utils/JREUtils.java b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/utils/JREUtils.java
index 46a84023a..1e1dfcf7c 100644
--- a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/utils/JREUtils.java
+++ b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/utils/JREUtils.java
@@ -5,6 +5,7 @@ import static net.kdt.pojavlaunch.Architecture.archAsString;
 import static net.kdt.pojavlaunch.Architecture.is64BitsDevice;
 import static net.kdt.pojavlaunch.Tools.LOCAL_RENDERER;
 import static net.kdt.pojavlaunch.prefs.LauncherPreferences.PREF_GLES_SHRINK_HACK;
+import static net.kdt.pojavlaunch.prefs.LauncherPreferences.PREF_OPENGL_VERSION_HACK;
 import static net.kdt.pojavlaunch.prefs.LauncherPreferences.PREF_VBO_DISABLE_HACK;
 
 import android.app.*;
@@ -217,7 +218,10 @@ public class JREUtils {
         envMap.put("LIBGL_SHRINK", PREF_GLES_SHRINK_HACK);
 
         // VBO disable hack
-        if(PREF_VBO_DISABLE_HACK) envMap.put("LIBGL_USEVBO","0");
+        if (PREF_VBO_DISABLE_HACK) envMap.put("LIBGL_USEVBO","0");
+
+        // openGL version hack
+        if (PREF_OPENGL_VERSION_HACK) envMap.put("LIBGL_ES", "1");
         
         // Fix white color on banner and sheep, since GL4ES 1.1.5
         envMap.put("LIBGL_NORMALIZE", "1");
diff --git a/app_pojavlauncher/src/main/res/values/strings.xml b/app_pojavlauncher/src/main/res/values/strings.xml
index 7d5b10f85..35db18ff6 100644
--- a/app_pojavlauncher/src/main/res/values/strings.xml
+++ b/app_pojavlauncher/src/main/res/values/strings.xml
@@ -288,5 +288,7 @@
 
     <string name="vbo_hack_title">Disable VBOs</string>
     <string name="vbo_hack_description">Help with compatibility on some old versions</string>
+    <string name="gles_version_hack_title">Force openGL 1</string>
+    <string name="gles_version_hack_description">Help with compatibility on some old versions</string>
 
 </resources>
diff --git a/app_pojavlauncher/src/main/res/xml/pref_experimental.xml b/app_pojavlauncher/src/main/res/xml/pref_experimental.xml
index f491e3cc6..67edc6beb 100644
--- a/app_pojavlauncher/src/main/res/xml/pref_experimental.xml
+++ b/app_pojavlauncher/src/main/res/xml/pref_experimental.xml
@@ -19,5 +19,12 @@
             android:key="vbo_disable_hack"
             />
 
+        <SwitchPreference
+            android:title="@string/gles_version_hack_title"
+            android:summary="@string/gles_version_hack_description"
+            android:defaultValue="false"
+            android:key="gles_version_hack"
+            />
+
     </PreferenceCategory>
 </PreferenceScreen>
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