GHOST: Only spam about X11 errors when using --debug-ghost

This commit adds a new command line argument --debug-ghost and
makes it so X11 errors happening during context initialization
are only printed when this new flag is sued.

There is no need to flood users with errors when their GPU is
not supporting latest OpenGL version. Or, at a very minimum,
the error must be more meaning full.

Differential Revision: https://developer.blender.org/D6057

1 files changed, 14 insertions, 0 deletions

diff --git a/intern/ghost/GHOST_ISystem.h b/intern/ghost/GHOST_ISystem.h
index b781de266bc..4634eb1bc66 100644
--- a/intern/ghost/GHOST_ISystem.h
+++ b/intern/ghost/GHOST_ISystem.h
@@ -458,6 +458,20 @@ class GHOST_ISystem {
                                         const char * /*link*/,
                                         GHOST_DialogOptions /*dialog_options*/) const = 0;
 
+  /***************************************************************************************
+   * Debugging
+   ***************************************************************************************/
+
+  /**
+   * Specify whether debug messages are to be shown.
+   */
+  virtual void initDebug(bool is_debug_enabled) = 0;
+
+  /**
+   * Check whether debug messages are to be shown.
+   */
+  virtual bool isDebugEnabled() = 0;
+
  protected:
   /**
    * Initialize the system.