Add a config to enable debug output and object labels for OpenGL in e…

…arly display.
neoforged · Mar 2, 2025 · adfd287 · adfd287
1 parent 0f835b6
commit adfd287
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/earlydisplay/src/main/java/net/neoforged/fml/earlydisplay/GlState.java b/earlydisplay/src/main/java/net/neoforged/fml/earlydisplay/GlState.java
@@ -5,6 +5,7 @@
 
 package net.neoforged.fml.earlydisplay;
 
+import static org.lwjgl.opengl.GL20C.glIsProgram;
 import static org.lwjgl.opengl.GL32C.GL_ACTIVE_TEXTURE;
 import static org.lwjgl.opengl.GL32C.GL_ARRAY_BUFFER;
 import static org.lwjgl.opengl.GL32C.GL_ARRAY_BUFFER_BINDING;
@@ -396,7 +397,12 @@ public static void applySnapshot(StateSnapshot snapshot) {
         clearColor(snapshot.clearColorRed, snapshot.clearColorGreen, snapshot.clearColorBlue, snapshot.clearColorAlpha);
         enableBlend(snapshot.blendEnabled);
         blendFuncSeparate(snapshot.blendSrcRGB, snapshot.blendDstRGB, snapshot.blendSrcAlpha, snapshot.blendDstAlpha);
-        useProgram(snapshot.currentProgram);
+        // The program might have been flagged for deletion and may no longer be available
+        if (glIsProgram(snapshot.currentProgram)) {
+            useProgram(snapshot.currentProgram);
+        } else {
+            useProgram(0);
+        }
         activeTexture(snapshot.activeTextureUnit);
         bindTexture2D(snapshot.boundTexture2D);
         bindVertexArray(snapshot.boundVertexArray);