use preserveDrawingBuffer in gl tests to make them work on latest firefox

1 files changed, 1 insertions, 0 deletions

diff --git a/src/settings.js b/src/settings.js
index df9da926..7caa5b92 100644
--- a/src/settings.js
+++ b/src/settings.js
@@ -158,6 +158,7 @@ var SOCKET_DEBUG = 0; // Log out socket/network data transfer.
 
 var GL_DEBUG = 0; // Print out all calls into WebGL. As with LIBRARY_DEBUG, you can set a runtime
                   // option, in this case GL.debug.
+var GL_TESTING = 0; // When enabled, sets preserveDrawingBuffer in the context, to allow tests to work (but adds overhead)
 var GL_MAX_TEMP_BUFFER_SIZE = 2097152; // How large GL emulation temp buffers are
 var GL_UNSAFE_OPTS = 1; // Enables some potentially-unsafe optimizations in GL emulation code