SL-17124 switchContext and loadShaderFile crashes

- Do not try initializing shaders if requirements are not met or if window does not exist
- Warn user before closing window. Situation is unexpected, there is chance of more issues, like a freeze or a crash on close()
- mHasMultitexture is a solid requirement, if it is not present, we won't be able to run

1 files changed, 1 insertions, 7 deletions

diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp
index a63203f3cb..8255eb882c 100644
--- a/indra/newview/llappviewer.cpp
+++ b/indra/newview/llappviewer.cpp
@@ -957,13 +957,7 @@ bool LLAppViewer::init()
 	// If we don't have the right GL requirements, exit.
 	if (!gGLManager.mHasRequirements)
 	{
-		// can't use an alert here since we're exiting and
-		// all hell breaks lose.
-		LLUIString details = LLNotifications::instance().getGlobalString("UnsupportedGLRequirements");
-		OSMessageBox(
-			details.getString(),
-			LLStringUtil::null,
-			OSMB_OK);
+        // already handled with a MBVideoDrvErr
 		return 0;
 	}