2 files changed, 33 insertions, 8 deletions

diff --git a/indra/newview/llfloatermodelpreview.cpp b/indra/newview/llfloatermodelpreview.cpp
index 47a3a4cd30..0346b06e2f 100755
--- a/indra/newview/llfloatermodelpreview.cpp
+++ b/indra/newview/llfloatermodelpreview.cpp
@@ -291,7 +291,7 @@ BOOL LLFloaterModelPreview::postBuild()
 
 	childSetCommitCallback("lod_mode", onLODParamCommit, this);
 	childSetCommitCallback("lod_error_threshold", onLODParamCommit, this);
-	childSetCommitCallback("lod_triangle_limit", onLODParamCommit, this);
+	childSetCommitCallback("lod_triangle_limit", onLODParamCommitTriangleLimit, this);
 	childSetCommitCallback("build_operator", onLODParamCommit, this);
 	childSetCommitCallback("queue_mode", onLODParamCommit, this);
 	childSetCommitCallback("border_mode", onLODParamCommit, this);
@@ -533,9 +533,14 @@ void LLFloaterModelPreview::onAutoFillCommit(LLUICtrl* ctrl, void* userdata)
 void LLFloaterModelPreview::onLODParamCommit(LLUICtrl* ctrl, void* userdata)
 {
 	LLFloaterModelPreview* fp = (LLFloaterModelPreview*) userdata;
-	fp->mModelPreview->genLODs(fp->mModelPreview->mPreviewLOD);
-	fp->mModelPreview->updateStatusMessages();
-	fp->mModelPreview->refresh();
+	fp->mModelPreview->onLODParamCommit(false);
+}
+
+//static
+void LLFloaterModelPreview::onLODParamCommitTriangleLimit(LLUICtrl* ctrl, void* userdata)
+{
+	LLFloaterModelPreview* fp = (LLFloaterModelPreview*) userdata;
+	fp->mModelPreview->onLODParamCommit(true);
 }
 
 
@@ -2841,7 +2846,7 @@ bool LLModelPreview::containsRiggedAsset( void )
 	}
 	return false;
 }
-void LLModelPreview::genLODs(S32 which_lod, U32 decimation)
+void LLModelPreview::genLODs(S32 which_lod, U32 decimation, bool enforce_tri_limit)
 {
 	if (mBaseModel.empty())
 	{
@@ -3072,7 +3077,17 @@ void LLModelPreview::genLODs(S32 which_lod, U32 decimation)
 		}
 		else
 		{
-			triangle_count = limit;
+			if (enforce_tri_limit)
+			{
+				triangle_count = limit;
+			}
+			else
+			{
+				for (S32 j=LLModel::LOD_HIGH; j>which_lod; --j)
+				{
+					triangle_count /= decimation;
+				}
+			}
 		}
 
 		mModel[lod].clear();
@@ -4338,6 +4353,13 @@ void LLModelPreview::textureLoadedCallback( BOOL success, LLViewerFetchedTexture
 	preview->refresh();
 }
 
+void LLModelPreview::onLODParamCommit(bool enforce_tri_limit)
+{
+	genLODs(mPreviewLOD, 3, enforce_tri_limit);
+	updateStatusMessages();
+	refresh();
+}
+
 LLFloaterModelPreview::DecompRequest::DecompRequest(const std::string& stage, LLModel* mdl)
 {
 	mStage = stage;
diff --git a/indra/newview/llfloatermodelpreview.h b/indra/newview/llfloatermodelpreview.h
index 63377bb1d6..81899e968a 100644..100755
--- a/indra/newview/llfloatermodelpreview.h
+++ b/indra/newview/llfloatermodelpreview.h
@@ -189,6 +189,7 @@ protected:
 	
 	static void		onAutoFillCommit(LLUICtrl*,void*);
 	static void		onLODParamCommit(LLUICtrl*,void*);
+	static void		onLODParamCommitTriangleLimit(LLUICtrl*,void*);
 	
 	static void		onExplodeCommit(LLUICtrl*, void*);
 	
@@ -234,6 +235,7 @@ protected:
 	LLMenuButton* mViewOptionMenuButton;
 	LLToggleableMenu* mViewOptionMenu;
 	LLMutex* mStatusLock;
+
 };
 
 class LLMeshFilePicker : public LLFilePickerThread
@@ -253,7 +255,7 @@ class LLModelPreview : public LLViewerDynamicTexture, public LLMutex
 	typedef boost::signals2::signal<void (F32 x, F32 y, F32 z, F32 streaming_cost, F32 physics_cost)> details_signal_t;
  
 public:
-	 LLModelPreview(S32 width, S32 height, LLFloater* fmp);
+	LLModelPreview(S32 width, S32 height, LLFloater* fmp);
 	virtual ~LLModelPreview();
 
 	void resetPreviewTarget();
@@ -274,7 +276,7 @@ public:
 	void clearModel(S32 lod);
 	void loadModel(std::string filename, S32 lod);
 	void loadModelCallback(S32 lod);
-	void genLODs(S32 which_lod = -1, U32 decimation = 3);
+	void genLODs(S32 which_lod = -1, U32 decimation = 3, bool enforce_tri_limit = false);
 	void generateNormals();
 	void consolidate();
 	void clearMaterials();
@@ -284,6 +286,7 @@ public:
 	void updateStatusMessages();
 	bool containsRiggedAsset( void );
 	void clearGLODGroup();
+	void onLODParamCommit(bool enforce_tri_limit);
 
 	static void	textureLoadedCallback( BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* src_aux, S32 discard_level, BOOL final, void* userdata );