3 files changed, 16 insertions, 13 deletions
diff --git a/indra/llrender/llshadermgr.cpp b/indra/llrender/llshadermgr.cpp
index c100c182dd..c64f46f38a 100644
--- a/indra/llrender/llshadermgr.cpp
+++ b/indra/llrender/llshadermgr.cpp
@@ -665,7 +665,7 @@ GLhandleARB LLShaderMgr::loadShaderFile(const std::string& filename, S32 & shade
 	
 	if (file == NULL)
 	{
-		LL_SHADER_LOADING_WARNS() << "GLSL Shader file not found: " << open_file_name << LL_ENDL;
+		LL_WARNS("ShaderLoading") << "GLSL Shader file not found: " << open_file_name << LL_ENDL;
 		return 0;
 	}
 
diff --git a/indra/newview/llviewershadermgr.cpp b/indra/newview/llviewershadermgr.cpp
index e926c5c3ba..1c9360a843 100644
--- a/indra/newview/llviewershadermgr.cpp
+++ b/indra/newview/llviewershadermgr.cpp
@@ -556,15 +556,14 @@ void LLViewerShaderMgr::setShaders()
     mShaderLevel[SHADER_DEFERRED] = deferred_class;
     mShaderLevel[SHADER_TRANSFORM] = transform_class;
 
-    BOOL loaded = loadBasicShaders();
-    if (loaded)
+    std::string shader_name = loadBasicShaders();
+    if (shader_name.empty())
     {
         LL_INFOS() << "Loaded basic shaders." << LL_ENDL;
     }
     else
     {
-        LL_ERRS() << "Unable to load basic shaders, verify graphics driver installed and current." << LL_ENDL;
-        llassert(loaded);
+        LL_ERRS() << "Unable to load basic shader " << shader_name << ", verify graphics driver installed and current." << LL_ENDL;
         reentrance = false; // For hygiene only, re-try probably helps nothing 
         return;
     }
@@ -572,7 +571,7 @@ void LLViewerShaderMgr::setShaders()
     gPipeline.mShadersLoaded = true;
 
     // Load all shaders to set max levels
-    loaded = loadShadersEnvironment();
+    BOOL loaded = loadShadersEnvironment();
 
     if (loaded)
     {
@@ -859,7 +858,7 @@ void LLViewerShaderMgr::unloadShaders()
 	gPipeline.mShadersLoaded = false;
 }
 
-BOOL LLViewerShaderMgr::loadBasicShaders()
+std::string LLViewerShaderMgr::loadBasicShaders()
 {
 	// Load basic dependency shaders first
 	// All of these have to load for any shaders to function
@@ -945,8 +944,8 @@ BOOL LLViewerShaderMgr::loadBasicShaders()
 		// Note usage of GL_VERTEX_SHADER_ARB
 		if (loadShaderFile(shaders[i].first, shaders[i].second, GL_VERTEX_SHADER_ARB, &attribs) == 0)
 		{
-			LL_SHADER_LOADING_WARNS() << "Failed to load vertex shader " << shaders[i].first << LL_ENDL;
-			return FALSE;
+			LL_WARNS("Shader") << "Failed to load vertex shader " << shaders[i].first << LL_ENDL;
+			return shaders[i].first;
 		}
 	}
 
@@ -1005,12 +1004,12 @@ BOOL LLViewerShaderMgr::loadBasicShaders()
 		// Note usage of GL_FRAGMENT_SHADER_ARB
 		if (loadShaderFile(shaders[i].first, shaders[i].second, GL_FRAGMENT_SHADER_ARB, &attribs, index_channels[i]) == 0)
 		{
-			LL_SHADER_LOADING_WARNS() << "Failed to load fragment shader " << shaders[i].first << LL_ENDL;
-			return FALSE;
+			LL_WARNS("Shader") << "Failed to load fragment shader " << shaders[i].first << LL_ENDL;
+			return shaders[i].first;
 		}
 	}
 
-	return TRUE;
+	return std::string();
 }
 
 BOOL LLViewerShaderMgr::loadShadersEnvironment()
diff --git a/indra/newview/llviewershadermgr.h b/indra/newview/llviewershadermgr.h
index 93bb29a355..f8a261805b 100644
--- a/indra/newview/llviewershadermgr.h
+++ b/indra/newview/llviewershadermgr.h
@@ -49,7 +49,11 @@ public:
 	void setShaders();
 	void unloadShaders();
     S32  getShaderLevel(S32 type);
-	BOOL loadBasicShaders();
+
+    // loadBasicShaders in case of a failure returns
+    // name of a file error happened at, otherwise
+    // returns an empty string
+    std::string loadBasicShaders();
 	BOOL loadShadersEffects();
 	BOOL loadShadersDeferred();
 	BOOL loadShadersObject();