From b454483aaea778a1af78717005d49bee9ffbf107 Mon Sep 17 00:00:00 2001
From: Jason Mitchell <mitchej@gmail.com>
Date: Sat, 24 Jan 2026 18:52:52 -0800
Subject: [PATCH] Add a nvidia workarounds from celeritas (#1286)

---
 .../compat/DriverCompatabilityCheck.java      | 55 +++++++++++++++++++
 .../startup/MixinInitGLStateManager.java      |  2 +
 2 files changed, 57 insertions(+)
 create mode 100644 src/main/java/com/gtnewhorizons/angelica/compat/DriverCompatabilityCheck.java

diff --git a/src/main/java/com/gtnewhorizons/angelica/compat/DriverCompatabilityCheck.java b/src/main/java/com/gtnewhorizons/angelica/compat/DriverCompatabilityCheck.java
new file mode 100644
index 000000000..70863cb08
--- /dev/null
+++ b/src/main/java/com/gtnewhorizons/angelica/compat/DriverCompatabilityCheck.java
@@ -0,0 +1,55 @@
+package com.gtnewhorizons.angelica.compat;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.lwjgl.opengl.ARBDebugOutput;
+import org.lwjgl.opengl.GL11;
+
+import com.gtnewhorizons.angelica.glsm.GLStateManager;
+
+/**
+ * Checks for known problematic driver configurations and applies workarounds. Adapted from Embeddium/Sodium's LateDriverScanner.
+ *
+ * <p>The NVIDIA workaround can be disabled via: {@code -Dangelica.disableNvidiaWorkaround=true}
+ */
+public class DriverCompatabilityCheck {
+    private static final Logger LOGGER = LogManager.getLogger("Angelica");
+
+    private static final boolean DISABLE_NVIDIA_WORKAROUND = Boolean.getBoolean("angelica.disableNvidiaWorkaround");
+
+    /**
+     * Should be called after GL context is created and GLStateManager is initialized.
+     */
+    public static void checkDriverCompatibility() {
+        final String vendor = GL11.glGetString(GL11.GL_VENDOR);
+        final String renderer = GL11.glGetString(GL11.GL_RENDERER);
+        final String version = GL11.glGetString(GL11.GL_VERSION);
+
+        LOGGER.info("OpenGL Vendor: {}", vendor);
+        LOGGER.info("OpenGL Renderer: {}", renderer);
+        LOGGER.info("OpenGL Version: {}", version);
+
+        if (vendor != null && vendor.contains("NVIDIA")) {
+            if (DISABLE_NVIDIA_WORKAROUND) {
+                LOGGER.info("NVIDIA workaround disabled via -Dangelica.disableNvidiaWorkaround=true");
+            } else {
+                applyNvidiaWorkaround();
+            }
+        }
+    }
+
+    /**
+     * https://github.com/godotengine/godot/issues/33969#issuecomment-917846774
+     * Attempt to force the driver to disable its submission thread by enabling synchronous debug output.
+     * This usually suppresses bad behavior from NVIDIA's "Threaded Optimizations" feature.
+     */
+    private static void applyNvidiaWorkaround() {
+        if (!GLStateManager.capabilities.GL_ARB_debug_output) {
+            LOGGER.warn("Cannot apply NVIDIA workaround: ARB_debug_output not available");
+            return;
+        }
+
+        LOGGER.info("Enabling workaround for NVIDIA threaded optimizations");
+        GL11.glEnable(ARBDebugOutput.GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB);
+    }
+}
diff --git a/src/mixin/java/com/gtnewhorizons/angelica/mixins/early/angelica/startup/MixinInitGLStateManager.java b/src/mixin/java/com/gtnewhorizons/angelica/mixins/early/angelica/startup/MixinInitGLStateManager.java
index d738f9456..3579c5c11 100644
--- a/src/mixin/java/com/gtnewhorizons/angelica/mixins/early/angelica/startup/MixinInitGLStateManager.java
+++ b/src/mixin/java/com/gtnewhorizons/angelica/mixins/early/angelica/startup/MixinInitGLStateManager.java
@@ -1,5 +1,6 @@
 package com.gtnewhorizons.angelica.mixins.early.angelica.startup;
 
+import com.gtnewhorizons.angelica.compat.DriverCompatabilityCheck;
 import com.gtnewhorizons.angelica.glsm.GLStateManager;
 import net.minecraft.client.renderer.OpenGlHelper;
 import org.lwjgl.opengl.Display;
@@ -15,5 +16,6 @@ public class MixinInitGLStateManager {
         GLStateManager.setDrawableGL(Display.getDrawable());
         GLStateManager.preInit();
         GLStateManager.init();
+        DriverCompatabilityCheck.checkDriverCompatibility();
     }
 }