Fix OpenGL bad access error on display link thread

codeincontext · Jul 1, 2011 · 1e64dcd · 1e64dcd
1 parent feda5d7
commit 1e64dcd
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/MacLight/OpenGLScreenReader.m b/MacLight/OpenGLScreenReader.m
@@ -81,7 +81,9 @@ - (NSColor *)readFullScreenToBuffer
 // Use this routine if you want to read only a portion of the screen pixels
 - (NSColor *)readPartialScreenToBuffer: (size_t) width bufferHeight:(size_t) height bufferBaseAddress: (void *)baseAddress
 {
-
+    // Set our context as the current OpenGL context
+    [mGLContext makeCurrentContext];
+
     // select front buffer as our source for pixel data
     glReadBuffer(GL_FRONT);