3 files changed, 6 insertions, 2 deletions
diff --git a/src/main/kotlin/cc/woverflow/chatting/Chatting.kt b/src/main/kotlin/cc/woverflow/chatting/Chatting.kt
index 5fb7c67..f0df46b 100644
--- a/src/main/kotlin/cc/woverflow/chatting/Chatting.kt
+++ b/src/main/kotlin/cc/woverflow/chatting/Chatting.kt
@@ -16,6 +16,7 @@ import gg.essential.universal.UResolution
 import net.minecraft.client.Minecraft
 import net.minecraft.client.gui.*
 import net.minecraft.client.renderer.GlStateManager
+import net.minecraft.client.renderer.OpenGlHelper
 import net.minecraft.client.settings.KeyBinding
 import net.minecraft.client.shader.Framebuffer
 import net.minecraft.util.MathHelper
@@ -134,6 +135,10 @@ object Chatting {
             EssentialAPI.getNotifications().push("Chatting", "Chat window is empty.")
             return null
         }
+        if (!OpenGlHelper.isFramebufferEnabled()) {
+            EssentialAPI.getNotifications().push("Chatting", "Screenshot failed, please disable “Fast Render” in OptiFine’s “Performance” tab.")
+            return null
+        }
 
         val fr: FontRenderer = ModCompatHooks.fontRenderer
         val fb: Framebuffer = RenderHelper.createBindFramebuffer(width * 3, (messages.size * 9) * 3)
diff --git a/src/main/kotlin/cc/woverflow/chatting/chat/ChatShortcuts.kt b/src/main/kotlin/cc/woverflow/chatting/chat/ChatShortcuts.kt
index 5cbbc2d..f3145de 100644
--- a/src/main/kotlin/cc/woverflow/chatting/chat/ChatShortcuts.kt
+++ b/src/main/kotlin/cc/woverflow/chatting/chat/ChatShortcuts.kt
@@ -23,7 +23,6 @@ object ChatShortcuts {
         }
     }
 
-
     fun initialize() {
         if (initialized) {
             return
diff --git a/src/main/kotlin/cc/woverflow/chatting/chat/ChatTab.kt b/src/main/kotlin/cc/woverflow/chatting/chat/ChatTab.kt
index 1389233..236ccf6 100644
--- a/src/main/kotlin/cc/woverflow/chatting/chat/ChatTab.kt
+++ b/src/main/kotlin/cc/woverflow/chatting/chat/ChatTab.kt
@@ -85,4 +85,4 @@ data class ChatTab(
     companion object {
         private var x = 4
     }
-}
-\ No newline at end of file
+}