make library and gl debug configurable at runtime, and share the pretty printing code

1 files changed, 6 insertions, 2 deletions

diff --git a/src/settings.js b/src/settings.js
index 24c52d59..f630e5c3 100644
--- a/src/settings.js
+++ b/src/settings.js
@@ -101,9 +101,13 @@ var SAFE_HEAP_LOG = 0; // Log out all SAFE_HEAP operations
 
 var LABEL_DEBUG = 0; // Print out labels and functions as we enter them
 var EXCEPTION_DEBUG = 1; // Print out exceptions in emscriptened code
-var LIBRARY_DEBUG = 0; // Print out when we enter a library call (library*.js)
 
-var GL_DEBUG = 0; // Print out all calls into WebGL
+var LIBRARY_DEBUG = 0; // Print out when we enter a library call (library*.js). You must also set
+                       // Runtime.debug at runtime for logging to happen, and can unset it when you
+                       // no longer want logging. A simple way to set it in C++ is
+                       //   emscripten_run_script("Runtime.debug = 1;");
+var GL_DEBUG = 0; // Print out all calls into WebGL. As with LIBRARY_DEBUG, you must set a runtime
+                  // option, in this case GL.debug.
 
 var DISABLE_EXCEPTION_CATCHING = 0; // Disables generating code to actually catch exceptions. If the code you
                                     // are compiling does not actually rely on catching exceptions (but the