Removing unused gHeadlessClient code from viewer

22 files changed, 51 insertions, 188 deletions

diff --git a/autobuild.xml b/autobuild.xml
index 49d8ca14bd..0c2fb6783f 100644
--- a/autobuild.xml
+++ b/autobuild.xml
@@ -1254,9 +1254,9 @@
             <key>archive</key>
             <map>
               <key>hash</key>
-              <string>2b9b2a86d70c87a6a5942faac278b57f</string>
+              <string>9ddf0bb2238a937f0115d6c9f0cf723f</string>
               <key>url</key>
-              <string>http://s3-proxy.lindenlab.com/private-builds-secondlife-com/hg/repo/llappearanceutility-source/rev/265061/arch/Linux/installer/llappearanceutility_source-0.1-linux-20120921.tar.bz2</string>
+              <string>http://s3-proxy.lindenlab.com/private-builds-secondlife-com/hg/repo/llappearanceutility-source/rev/265084/arch/Linux/installer/llappearanceutility_source-0.1-linux-20120923.tar.bz2</string>
             </map>
             <key>name</key>
             <string>linux</string>
diff --git a/indra/llrender/llgl.cpp b/indra/llrender/llgl.cpp
index 0b56b3889c..a53c3ca9b7 100644
--- a/indra/llrender/llgl.cpp
+++ b/indra/llrender/llgl.cpp
@@ -58,13 +58,8 @@
 BOOL gDebugSession = FALSE;
 BOOL gDebugGL = FALSE;
 BOOL gClothRipple = FALSE;
-BOOL gHeadlessClient = FALSE;
 BOOL gGLActive = FALSE;
 
-static const std::string HEADLESS_VENDOR_STRING("Linden Lab");
-static const std::string HEADLESS_RENDERER_STRING("Headless");
-static const std::string HEADLESS_VERSION_STRING("1.0");
-
 std::ofstream gFailLog;
 
 #if GL_ARB_debug_output
@@ -789,19 +784,9 @@ void LLGLManager::setToDebugGPU()
 
 void LLGLManager::getGLInfo(LLSD& info)
 {
-	if (gHeadlessClient)
-	{
-		info["GLInfo"]["GLVendor"] = HEADLESS_VENDOR_STRING;
-		info["GLInfo"]["GLRenderer"] = HEADLESS_RENDERER_STRING;
-		info["GLInfo"]["GLVersion"] = HEADLESS_VERSION_STRING;
-		return;
-	}
-	else
-	{
-		info["GLInfo"]["GLVendor"] = std::string((const char *)glGetString(GL_VENDOR));
-		info["GLInfo"]["GLRenderer"] = std::string((const char *)glGetString(GL_RENDERER));
-		info["GLInfo"]["GLVersion"] = std::string((const char *)glGetString(GL_VERSION));
-	}
+	info["GLInfo"]["GLVendor"] = std::string((const char *)glGetString(GL_VENDOR));
+	info["GLInfo"]["GLRenderer"] = std::string((const char *)glGetString(GL_RENDERER));
+	info["GLInfo"]["GLVersion"] = std::string((const char *)glGetString(GL_VERSION));
 
 #if !LL_MESA_HEADLESS
 	std::string all_exts = ll_safe_string((const char *)gGLHExts.mSysExts);
@@ -818,18 +803,9 @@ std::string LLGLManager::getGLInfoString()
 {
 	std::string info_str;
 
-	if (gHeadlessClient)
-	{
-		info_str += std::string("GL_VENDOR      ") + HEADLESS_VENDOR_STRING + std::string("\n");
-		info_str += std::string("GL_RENDERER    ") + HEADLESS_RENDERER_STRING + std::string("\n");
-		info_str += std::string("GL_VERSION     ") + HEADLESS_VERSION_STRING + std::string("\n");
-	}
-	else
-	{
-		info_str += std::string("GL_VENDOR      ") + ll_safe_string((const char *)glGetString(GL_VENDOR)) + std::string("\n");
-		info_str += std::string("GL_RENDERER    ") + ll_safe_string((const char *)glGetString(GL_RENDERER)) + std::string("\n");
-		info_str += std::string("GL_VERSION     ") + ll_safe_string((const char *)glGetString(GL_VERSION)) + std::string("\n");
-	}
+	info_str += std::string("GL_VENDOR      ") + ll_safe_string((const char *)glGetString(GL_VENDOR)) + std::string("\n");
+	info_str += std::string("GL_RENDERER    ") + ll_safe_string((const char *)glGetString(GL_RENDERER)) + std::string("\n");
+	info_str += std::string("GL_VERSION     ") + ll_safe_string((const char *)glGetString(GL_VERSION)) + std::string("\n");
 
 #if !LL_MESA_HEADLESS 
 	std::string all_exts= ll_safe_string(((const char *)gGLHExts.mSysExts));
@@ -842,18 +818,9 @@ std::string LLGLManager::getGLInfoString()
 
 void LLGLManager::printGLInfoString()
 {
-	if (gHeadlessClient)
-	{
-		LL_INFOS("RenderInit") << "GL_VENDOR:     " << HEADLESS_VENDOR_STRING << LL_ENDL;
-		LL_INFOS("RenderInit") << "GL_RENDERER:   " << HEADLESS_RENDERER_STRING << LL_ENDL;
-		LL_INFOS("RenderInit") << "GL_VERSION:    " << HEADLESS_VERSION_STRING << LL_ENDL;
-	}
-	else
-	{
-		LL_INFOS("RenderInit") << "GL_VENDOR:     " << ((const char *)glGetString(GL_VENDOR)) << LL_ENDL;
-		LL_INFOS("RenderInit") << "GL_RENDERER:   " << ((const char *)glGetString(GL_RENDERER)) << LL_ENDL;
-		LL_INFOS("RenderInit") << "GL_VERSION:    " << ((const char *)glGetString(GL_VERSION)) << LL_ENDL;
-	}
+	LL_INFOS("RenderInit") << "GL_VENDOR:     " << ((const char *)glGetString(GL_VENDOR)) << LL_ENDL;
+	LL_INFOS("RenderInit") << "GL_RENDERER:   " << ((const char *)glGetString(GL_RENDERER)) << LL_ENDL;
+	LL_INFOS("RenderInit") << "GL_VERSION:    " << ((const char *)glGetString(GL_VERSION)) << LL_ENDL;
 
 #if !LL_MESA_HEADLESS
 	std::string all_exts= ll_safe_string(((const char *)gGLHExts.mSysExts));
@@ -865,14 +832,7 @@ void LLGLManager::printGLInfoString()
 std::string LLGLManager::getRawGLString()
 {
 	std::string gl_string;
-	if (gHeadlessClient)
-	{
-		gl_string = HEADLESS_VENDOR_STRING + " " + HEADLESS_RENDERER_STRING;
-	}
-	else
-	{
-		gl_string = ll_safe_string((char*)glGetString(GL_VENDOR)) + " " + ll_safe_string((char*)glGetString(GL_RENDERER));
-	}
+	gl_string = ll_safe_string((char*)glGetString(GL_VENDOR)) + " " + ll_safe_string((char*)glGetString(GL_RENDERER));
 	return gl_string;
 }
 
diff --git a/indra/llrender/llgl.h b/indra/llrender/llgl.h
index 964495a3ab..d77c3ede06 100644
--- a/indra/llrender/llgl.h
+++ b/indra/llrender/llgl.h
@@ -453,7 +453,6 @@ void init_glstates();
 void parse_gl_version( S32* major, S32* minor, S32* release, std::string* vendor_specific, std::string* version_string );
 
 extern BOOL gClothRipple;
-extern BOOL gHeadlessClient;
 extern BOOL gGLActive;
 
 // Deal with changing glext.h definitions for newer SDK versions, specifically
diff --git a/indra/llrender/llimagegl.cpp b/indra/llrender/llimagegl.cpp
index a4d7872ec2..d561f63544 100755
--- a/indra/llrender/llimagegl.cpp
+++ b/indra/llrender/llimagegl.cpp
@@ -1222,7 +1222,6 @@ void LLImageGL::setManualImage(U32 target, S32 miplevel, S32 intformat, S32 widt
 //the texture is assiciate with some image by calling glTexImage outside LLImageGL
 BOOL LLImageGL::createGLTexture()
 {
-	if (gHeadlessClient) return FALSE;
 	if (gGLManager.mIsDisabled)
 	{
 		llwarns << "Trying to create a texture while GL is disabled!" << llendl;
@@ -1252,7 +1251,6 @@ BOOL LLImageGL::createGLTexture()
 
 BOOL LLImageGL::createGLTexture(S32 discard_level, const LLImageRaw* imageraw, S32 usename/*=0*/, BOOL to_create, S32 category)
 {
-	if (gHeadlessClient) return FALSE;
 	if (gGLManager.mIsDisabled)
 	{
 		llwarns << "Trying to create a texture while GL is disabled!" << llendl;
diff --git a/indra/llwindow/llwindow.cpp b/indra/llwindow/llwindow.cpp
index d83278d875..9e4ad310c7 100644
--- a/indra/llwindow/llwindow.cpp
+++ b/indra/llwindow/llwindow.cpp
@@ -388,38 +388,28 @@ LLWindow* LLWindowManager::createWindow(
 	BOOL fullscreen, 
 	BOOL clearBg,
 	BOOL disable_vsync,
-	BOOL use_gl,
 	BOOL ignore_pixel_depth,
 	U32 fsaa_samples)
 {
 	LLWindow* new_window;
 
-	if (use_gl)
-	{
 #if LL_MESA_HEADLESS
-		new_window = new LLWindowMesaHeadless(callbacks,
-			title, name, x, y, width, height, flags, 
-			fullscreen, clearBg, disable_vsync, use_gl, ignore_pixel_depth);
+	new_window = new LLWindowMesaHeadless(callbacks,
+		title, name, x, y, width, height, flags, 
+		fullscreen, clearBg, disable_vsync, ignore_pixel_depth);
 #elif LL_SDL
-		new_window = new LLWindowSDL(callbacks,
-			title, x, y, width, height, flags, 
-			fullscreen, clearBg, disable_vsync, use_gl, ignore_pixel_depth, fsaa_samples);
+	new_window = new LLWindowSDL(callbacks,
+		title, x, y, width, height, flags, 
+		fullscreen, clearBg, disable_vsync, ignore_pixel_depth, fsaa_samples);
 #elif LL_WINDOWS
-		new_window = new LLWindowWin32(callbacks,
-			title, name, x, y, width, height, flags, 
-			fullscreen, clearBg, disable_vsync, use_gl, ignore_pixel_depth, fsaa_samples);
+	new_window = new LLWindowWin32(callbacks,
+		title, name, x, y, width, height, flags, 
+		fullscreen, clearBg, disable_vsync, ignore_pixel_depth, fsaa_samples);
 #elif LL_DARWIN
-		new_window = new LLWindowMacOSX(callbacks,
-			title, name, x, y, width, height, flags, 
-			fullscreen, clearBg, disable_vsync, use_gl, ignore_pixel_depth, fsaa_samples);
+	new_window = new LLWindowMacOSX(callbacks,
+		title, name, x, y, width, height, flags, 
+		fullscreen, clearBg, disable_vsync, ignore_pixel_depth, fsaa_samples);
 #endif
-	}
-	else
-	{
-		new_window = new LLWindowHeadless(callbacks,
-			title, name, x, y, width, height, flags, 
-			fullscreen, clearBg, disable_vsync, use_gl, ignore_pixel_depth);
-	}
 
 	if (FALSE == new_window->isValid())
 	{
diff --git a/indra/llwindow/llwindow.h b/indra/llwindow/llwindow.h
index 4da87f4e06..e92b0fd387 100644
--- a/indra/llwindow/llwindow.h
+++ b/indra/llwindow/llwindow.h
@@ -265,7 +265,6 @@ public:
 		BOOL fullscreen = FALSE,
 		BOOL clearBg = FALSE,
 		BOOL disable_vsync = TRUE,
-		BOOL use_gl = TRUE,
 		BOOL ignore_pixel_depth = FALSE,
 		U32 fsaa_samples = 0);
 	static BOOL destroyWindow(LLWindow* window);
diff --git a/indra/llwindow/llwindowheadless.cpp b/indra/llwindow/llwindowheadless.cpp
index e6e6bc67ff..dbdb40f5b9 100644
--- a/indra/llwindow/llwindowheadless.cpp
+++ b/indra/llwindow/llwindowheadless.cpp
@@ -35,7 +35,7 @@
 //
 LLWindowHeadless::LLWindowHeadless(LLWindowCallbacks* callbacks, const std::string& title, const std::string& name, S32 x, S32 y, S32 width, S32 height,
 							 U32 flags,  BOOL fullscreen, BOOL clear_background,
-							 BOOL disable_vsync, BOOL use_gl, BOOL ignore_pixel_depth)
+							 BOOL disable_vsync, BOOL ignore_pixel_depth)
 	: LLWindow(callbacks, fullscreen, flags)
 {
 	// Initialize a headless keyboard.
diff --git a/indra/llwindow/llwindowheadless.h b/indra/llwindow/llwindowheadless.h
index 1f767f4c97..72f9684ca3 100644
--- a/indra/llwindow/llwindowheadless.h
+++ b/indra/llwindow/llwindowheadless.h
@@ -96,7 +96,7 @@ public:
 		S32 x, S32 y, 
 		S32 width, S32 height,
 		U32 flags,  BOOL fullscreen, BOOL clear_background,
-		BOOL disable_vsync, BOOL use_gl, BOOL ignore_pixel_depth);
+		BOOL disable_vsync, BOOL ignore_pixel_depth);
 	virtual ~LLWindowHeadless();
 
 private:
diff --git a/indra/llwindow/llwindowmacosx.cpp b/indra/llwindow/llwindowmacosx.cpp
index 97637c937f..413a9df616 100644
--- a/indra/llwindow/llwindowmacosx.cpp
+++ b/indra/llwindow/llwindowmacosx.cpp
@@ -210,7 +210,7 @@ LLWindowMacOSX::LLWindowMacOSX(LLWindowCallbacks* callbacks,
 							   const std::string& title, const std::string& name, S32 x, S32 y, S32 width,
 							   S32 height, U32 flags,
 							   BOOL fullscreen, BOOL clearBg,
-							   BOOL disable_vsync, BOOL use_gl,
+							   BOOL disable_vsync,
 							   BOOL ignore_pixel_depth,
 							   U32 fsaa_samples)
 	: LLWindow(NULL, fullscreen, flags)
@@ -228,7 +228,6 @@ LLWindowMacOSX::LLWindowMacOSX(LLWindowCallbacks* callbacks,
 	gKeyboard = new LLKeyboardMacOSX();
 	gKeyboard->setCallbacks(callbacks);
 
-	// Ignore use_gl for now, only used for drones on PC
 	mWindow = NULL;
 	mContext = NULL;
 	mPixelFormat = NULL;
diff --git a/indra/llwindow/llwindowmacosx.h b/indra/llwindow/llwindowmacosx.h
index 52ba8b3bf3..4484787a4e 100644
--- a/indra/llwindow/llwindowmacosx.h
+++ b/indra/llwindow/llwindowmacosx.h
@@ -122,7 +122,7 @@ public:
 protected:
 	LLWindowMacOSX(LLWindowCallbacks* callbacks,
 		const std::string& title, const std::string& name, int x, int y, int width, int height, U32 flags,
-		BOOL fullscreen, BOOL clearBg, BOOL disable_vsync, BOOL use_gl,
+		BOOL fullscreen, BOOL clearBg, BOOL disable_vsync,
 		BOOL ignore_pixel_depth,
 		U32 fsaa_samples);
 	~LLWindowMacOSX();
diff --git a/indra/llwindow/llwindowmesaheadless.cpp b/indra/llwindow/llwindowmesaheadless.cpp
index 11c22ac94e..2b668d3fc4 100644
--- a/indra/llwindow/llwindowmesaheadless.cpp
+++ b/indra/llwindow/llwindowmesaheadless.cpp
@@ -41,28 +41,25 @@ U16 *gMesaBuffer = NULL;
 LLWindowMesaHeadless::LLWindowMesaHeadless(LLWindowCallbacks* callbacks,
                                            const std::string& title, const std::string& name, S32 x, S32 y, S32 width, S32 height,
 							 U32 flags,  BOOL fullscreen, BOOL clearBg,
-							 BOOL disable_vsync, BOOL use_gl, BOOL ignore_pixel_depth)
+							 BOOL disable_vsync, BOOL ignore_pixel_depth)
 	: LLWindow(callbacks, fullscreen, flags)
 {
-	if (use_gl)
-	{
-		llinfos << "MESA Init" << llendl;
-		mMesaContext = OSMesaCreateContextExt( GL_RGBA, 32, 0, 0, NULL );
-
-		/* Allocate the image buffer */
-		mMesaBuffer = new unsigned char [width * height * 4 * MESA_CHANNEL_SIZE];
-		llassert(mMesaBuffer);
+	llinfos << "MESA Init" << llendl;
+	mMesaContext = OSMesaCreateContextExt( GL_RGBA, 32, 0, 0, NULL );
 
-		gMesaBuffer = (U16*)mMesaBuffer;
+	/* Allocate the image buffer */
+	mMesaBuffer = new unsigned char [width * height * 4 * MESA_CHANNEL_SIZE];
+	llassert(mMesaBuffer);
 
-		/* Bind the buffer to the context and make it current */
-		if (!OSMesaMakeCurrent( mMesaContext, mMesaBuffer, MESA_CHANNEL_TYPE, width, height ))
-		{
-			llerrs << "MESA: OSMesaMakeCurrent failed!" << llendl;
-		}
+	gMesaBuffer = (U16*)mMesaBuffer;
 
-		llverify(gGLManager.initGL());
+	/* Bind the buffer to the context and make it current */
+	if (!OSMesaMakeCurrent( mMesaContext, mMesaBuffer, MESA_CHANNEL_TYPE, width, height ))
+	{
+		llerrs << "MESA: OSMesaMakeCurrent failed!" << llendl;
 	}
+
+	llverify(gGLManager.initGL());
 }
 
 
diff --git a/indra/llwindow/llwindowmesaheadless.h b/indra/llwindow/llwindowmesaheadless.h
index bc8e25ec44..c8d2bf2824 100644
--- a/indra/llwindow/llwindowmesaheadless.h
+++ b/indra/llwindow/llwindowmesaheadless.h
@@ -98,7 +98,7 @@ public:
 	LLWindowMesaHeadless(LLWindowCallbacks* callbacks,
                          const std::string& title, const std::string& name, S32 x, S32 y, S32 width, S32 height,
 				  U32 flags,  BOOL fullscreen, BOOL clearBg,
-				  BOOL disable_vsync, BOOL use_gl, BOOL ignore_pixel_depth);
+				  BOOL disable_vsync, BOOL ignore_pixel_depth);
 	~LLWindowMesaHeadless();
 
 private:
diff --git a/indra/llwindow/llwindowsdl.cpp b/indra/llwindow/llwindowsdl.cpp
index 3bf4a48cb6..de731df228 100644
--- a/indra/llwindow/llwindowsdl.cpp
+++ b/indra/llwindow/llwindowsdl.cpp
@@ -186,7 +186,7 @@ LLWindowSDL::LLWindowSDL(LLWindowCallbacks* callbacks,
 			 const std::string& title, S32 x, S32 y, S32 width,
 			 S32 height, U32 flags,
 			 BOOL fullscreen, BOOL clearBg,
-			 BOOL disable_vsync, BOOL use_gl,
+			 BOOL disable_vsync,
 			 BOOL ignore_pixel_depth, U32 fsaa_samples)
 	: LLWindow(callbacks, fullscreen, flags),
 	  Lock_Display(NULL),
@@ -197,7 +197,6 @@ LLWindowSDL::LLWindowSDL(LLWindowCallbacks* callbacks,
 	gKeyboard->setCallbacks(callbacks);
 	// Note that we can't set up key-repeat until after SDL has init'd video
 
-	// Ignore use_gl for now, only used for drones on PC
 	mWindow = NULL;
 	mNeedsResize = FALSE;
 	mOverrideAspectRatio = 0.f;
diff --git a/indra/llwindow/llwindowsdl.h b/indra/llwindow/llwindowsdl.h
index 4e2a269ea3..91ba73a0ac 100644
--- a/indra/llwindow/llwindowsdl.h
+++ b/indra/llwindow/llwindowsdl.h
@@ -147,7 +147,7 @@ public:
 protected:
 	LLWindowSDL(LLWindowCallbacks* callbacks,
 		const std::string& title, int x, int y, int width, int height, U32 flags,
-		BOOL fullscreen, BOOL clearBg, BOOL disable_vsync, BOOL use_gl,
+		BOOL fullscreen, BOOL clearBg, BOOL disable_vsync,
 		BOOL ignore_pixel_depth, U32 fsaa_samples);
 	~LLWindowSDL();
 
diff --git a/indra/llwindow/llwindowwin32.cpp b/indra/llwindow/llwindowwin32.cpp
index 9a4dd41c4e..639ffb9d56 100644
--- a/indra/llwindow/llwindowwin32.cpp
+++ b/indra/llwindow/llwindowwin32.cpp
@@ -362,7 +362,7 @@ LLWindowWin32::LLWindowWin32(LLWindowCallbacks* callbacks,
 							 const std::string& title, const std::string& name, S32 x, S32 y, S32 width,
 							 S32 height, U32 flags, 
 							 BOOL fullscreen, BOOL clearBg,
-							 BOOL disable_vsync, BOOL use_gl,
+							 BOOL disable_vsync,
 							 BOOL ignore_pixel_depth,
 							 U32 fsaa_samples)
 	: LLWindow(callbacks, fullscreen, flags)
diff --git a/indra/llwindow/llwindowwin32.h b/indra/llwindow/llwindowwin32.h
index 54c9ac4d4d..aa7e2289bb 100644
--- a/indra/llwindow/llwindowwin32.h
+++ b/indra/llwindow/llwindowwin32.h
@@ -118,7 +118,7 @@ public:
 protected:
 	LLWindowWin32(LLWindowCallbacks* callbacks,
 		const std::string& title, const std::string& name, int x, int y, int width, int height, U32 flags, 
-		BOOL fullscreen, BOOL clearBg, BOOL disable_vsync, BOOL use_gl,
+		BOOL fullscreen, BOOL clearBg, BOOL disable_vsync,
 		BOOL ignore_pixel_depth, U32 fsaa_samples);
 	~LLWindowWin32();
 
diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp
index 587435301d..ce5180c0d2 100644
--- a/indra/newview/llappviewer.cpp
+++ b/indra/newview/llappviewer.cpp
@@ -1319,11 +1319,11 @@ bool LLAppViewer::mainLoop()
 				// Scan keyboard for movement keys.  Command keys and typing
 				// are handled by windows callbacks.  Don't do this until we're
 				// done initializing.  JC
-				if ((gHeadlessClient || gViewerWindow->getWindow()->getVisible())
+				if (gViewerWindow->getWindow()->getVisible()
 					&& gViewerWindow->getActive()
 					&& !gViewerWindow->getWindow()->getMinimized()
 					&& LLStartUp::getStartupState() == STATE_STARTED
-					&& (gHeadlessClient || !gViewerWindow->getShowProgress())
+					&& !gViewerWindow->getShowProgress()
 					&& !gFocusMgr.focusLocked())
 				{
 					LLMemType mjk(LLMemType::MTYPE_JOY_KEY);
@@ -1371,8 +1371,7 @@ bool LLAppViewer::mainLoop()
 				}
 
 				// Render scene.
-				// *TODO: Should we run display() even during gHeadlessClient?  DK 2011-02-18
-				if (!LLApp::isExiting() && !gHeadlessClient)
+				if (!LLApp::isExiting())
 				{
 					pingMainloopTimeout("Main:Display");
 					gGLActive = TRUE;
@@ -2992,9 +2991,6 @@ bool LLAppViewer::initWindow()
 {
 	LL_INFOS("AppInit") << "Initializing window..." << LL_ENDL;
 
-	// store setting in a global for easy access and modification
-	gHeadlessClient = gSavedSettings.getBOOL("HeadlessClient");
-
 	// always start windowed
 	BOOL ignorePixelDepth = gSavedSettings.getBOOL("IgnorePixelDepth");
 
diff --git a/indra/newview/llstartup.cpp b/indra/newview/llstartup.cpp
index ab06b1f5aa..561734aaae 100755
--- a/indra/newview/llstartup.cpp
+++ b/indra/newview/llstartup.cpp
@@ -772,10 +772,6 @@ bool idle_startup()
 				gUserCredential = gLoginHandler.initializeLoginInfo();                 
 				display_startup();
 			}     
-			if (gHeadlessClient)
-			{
-				LL_WARNS("AppInit") << "Waiting at connection box in headless client.  Did you mean to add autologin params?" << LL_ENDL;
-			}
 			// Make sure the process dialog doesn't hide things
 			display_startup();
 			gViewerWindow->setShowProgress(FALSE);
@@ -3507,13 +3503,6 @@ bool process_login_success_response()
 
 void transition_back_to_login_panel(const std::string& emsg)
 {
-	if (gHeadlessClient && gSavedSettings.getBOOL("AutoLogin"))
-	{
-		LL_WARNS("AppInit") << "Failed to login!" << LL_ENDL;
-		LL_WARNS("AppInit") << emsg << LL_ENDL;
-		exit(0);
-	}
-
 	// Bounce back to the login screen.
 	reset_login(); // calls LLStartUp::setStartupState( STATE_LOGIN_SHOW );
 	gSavedSettings.setBOOL("AutoLogin", FALSE);
diff --git a/indra/newview/llviewerdisplay.cpp b/indra/newview/llviewerdisplay.cpp
index cc697f8510..fae20b1c13 100644
--- a/indra/newview/llviewerdisplay.cpp
+++ b/indra/newview/llviewerdisplay.cpp
@@ -313,24 +313,6 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 	// Logic for forcing window updates if we're in drone mode.
 	//
 
-	// *TODO: Investigate running display() during gHeadlessClient.  See if this early exit is needed DK 2011-02-18
-	if (gHeadlessClient) 
-	{
-#if LL_WINDOWS
-		static F32 last_update_time = 0.f;
-		if ((gFrameTimeSeconds - last_update_time) > 1.f)
-		{
-			InvalidateRect((HWND)gViewerWindow->getPlatformWindow(), NULL, FALSE);
-			last_update_time = gFrameTimeSeconds;
-		}
-#elif LL_DARWIN
-		// MBW -- Do something clever here.
-#endif
-		// Not actually rendering, don't bother.
-		return;
-	}
-
-
 	//
 	// Bail out if we're in the startup state and don't want to try to
 	// render the world.
diff --git a/indra/newview/llviewerobjectlist.cpp b/indra/newview/llviewerobjectlist.cpp
index c036fcc114..e399b45cba 100644
--- a/indra/newview/llviewerobjectlist.cpp
+++ b/indra/newview/llviewerobjectlist.cpp
@@ -1524,7 +1524,6 @@ static LLFastTimer::DeclareTimer FTM_REGION_SHIFT("Region Shift");
 
 void LLViewerObjectList::shiftObjects(const LLVector3 &offset)
 {
-	if (gHeadlessClient) return;
 	// This is called when we shift our origin when we cross region boundaries...
 	// We need to update many object caches, I'll document this more as I dig through the code
 	// cleaning things out...
diff --git a/indra/newview/llviewerwindow.cpp b/indra/newview/llviewerwindow.cpp
index 0cad2e3ec6..1780c2715a 100755
--- a/indra/newview/llviewerwindow.cpp
+++ b/indra/newview/llviewerwindow.cpp
@@ -1385,43 +1385,6 @@ void LLViewerWindow::handleMenuSelect(LLWindow *window,  S32 menu_item)
 
 BOOL LLViewerWindow::handlePaint(LLWindow *window,  S32 x,  S32 y, S32 width,  S32 height)
 {
-	// *TODO: Enable similar information output for other platforms?  DK 2011-02-18
-#if LL_WINDOWS
-	if (gHeadlessClient)
-	{
-		HWND window_handle = (HWND)window->getPlatformWindow();
-		PAINTSTRUCT ps; 
-		HDC hdc; 
- 
-		RECT wnd_rect;
-		wnd_rect.left = 0;
-		wnd_rect.top = 0;
-		wnd_rect.bottom = 200;
-		wnd_rect.right = 500;
-
-		hdc = BeginPaint(window_handle, &ps); 
-		//SetBKColor(hdc, RGB(255, 255, 255));
-		FillRect(hdc, &wnd_rect, CreateSolidBrush(RGB(255, 255, 255)));
-
-		std::string temp_str;
-		temp_str = llformat( "FPS %3.1f Phy FPS %2.1f Time Dil %1.3f",		/* Flawfinder: ignore */
-				LLViewerStats::getInstance()->mFPSStat.getMeanPerSec(),
-				LLViewerStats::getInstance()->mSimPhysicsFPS.getPrev(0),
-				LLViewerStats::getInstance()->mSimTimeDilation.getPrev(0));
-		S32 len = temp_str.length();
-		TextOutA(hdc, 0, 0, temp_str.c_str(), len); 
-
-
-		LLVector3d pos_global = gAgent.getPositionGlobal();
-		temp_str = llformat( "Avatar pos %6.1lf %6.1lf %6.1lf", pos_global.mdV[0], pos_global.mdV[1], pos_global.mdV[2]);
-		len = temp_str.length();
-		TextOutA(hdc, 0, 25, temp_str.c_str(), len); 
-
-		TextOutA(hdc, 0, 50, "Set \"HeadlessClient FALSE\" in settings.ini file to reenable", 61);
-		EndPaint(window_handle, &ps); 
-		return TRUE;
-	}
-#endif
 	return FALSE;
 }
 
@@ -1568,12 +1531,12 @@ LLViewerWindow::LLViewerWindow(const Params& p)
 	resetSnapshotLoc();
 
 	// create window
+	const BOOL clear_bg = FALSE;
 	mWindow = LLWindowManager::createWindow(this,
 		p.title, p.name, p.x, p.y, p.width, p.height, 0,
 		p.fullscreen, 
-		gHeadlessClient,
+		clear_bg,
 		gSavedSettings.getBOOL("DisableVerticalSync"),
-		!gHeadlessClient,
 		p.ignore_pixel_depth,
 		gSavedSettings.getBOOL("RenderDeferred") ? 0 : gSavedSettings.getU32("RenderFSAASamples")); //don't use window level anti-aliasing if FBOs are enabled
 
@@ -1717,7 +1680,6 @@ LLViewerWindow::LLViewerWindow(const Params& p)
 
 void LLViewerWindow::initGLDefaults()
 {
-	if (gHeadlessClient) return;
 	gGL.setSceneBlendType(LLRender::BT_ALPHA);
 
 	if (!LLGLSLShader::sNoFixedFunction)
@@ -4997,11 +4959,6 @@ bool LLViewerWindow::onAlert(const LLSD& notify)
 {
 	LLNotificationPtr notification = LLNotifications::instance().find(notify["id"].asUUID());
 
-	if (gHeadlessClient)
-	{
-		llinfos << "Alert: " << notification->getName() << llendl;
-	}
-
 	// If we're in mouselook, the mouse is hidden and so the user can't click 
 	// the dialog buttons.  In that case, change to First Person instead.
 	if( gAgentCamera.cameraMouselook() )
diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp
index e874373f9e..61df5bc2eb 100644
--- a/indra/newview/pipeline.cpp
+++ b/indra/newview/pipeline.cpp
@@ -1139,7 +1139,6 @@ void LLPipeline::releaseScreenBuffers()
 
 void LLPipeline::createGLBuffers()
 {
-	if (gHeadlessClient) return;
 	stop_glerror();
 	LLMemType mt_cb(LLMemType::MTYPE_PIPELINE_CREATE_BUFFERS);
 	assertInitialized();