6 files changed, 57 insertions, 1 deletions
diff --git a/indra/llrender/llgl.cpp b/indra/llrender/llgl.cpp
index c0edd92bc1..c2e9740372 100644
--- a/indra/llrender/llgl.cpp
+++ b/indra/llrender/llgl.cpp
@@ -1047,6 +1047,33 @@ void flush_glerror()
 	glGetError();
 }
 
+//this function outputs gl error to the log file, does not crash the code.
+void log_glerror()
+{
+	if (LL_UNLIKELY(!gGLManager.mInited))
+	{
+		return ;
+	}
+	//  Create or update texture to be used with this data 
+	GLenum error;
+	error = glGetError();
+	while (LL_UNLIKELY(error))
+	{
+		GLubyte const * gl_error_msg = gluErrorString(error);
+		if (NULL != gl_error_msg)
+		{
+			llwarns << "GL Error: " << error << " GL Error String: " << gl_error_msg << llendl ;			
+		}
+		else
+		{
+			// gluErrorString returns NULL for some extensions' error codes.
+			// you'll probably have to grep for the number in glext.h.
+			llwarns << "GL Error: UNKNOWN 0x" << std::hex << error << std::dec << llendl;
+		}
+		error = glGetError();
+	}
+}
+
 void do_assert_glerror()
 {
 	if (LL_UNLIKELY(!gGLManager.mInited))
diff --git a/indra/llrender/llgl.h b/indra/llrender/llgl.h
index 5e8965c06a..de63d37480 100644
--- a/indra/llrender/llgl.h
+++ b/indra/llrender/llgl.h
@@ -157,6 +157,7 @@ void rotate_quat(LLQuaternion& rotation);
 
 void flush_glerror(); // Flush GL errors when we know we're handling them correctly.
 
+void log_glerror();
 void assert_glerror();
 
 void clear_glerror();
diff --git a/indra/llrender/llimagegl.cpp b/indra/llrender/llimagegl.cpp
index 9d037f2565..65940cb067 100644
--- a/indra/llrender/llimagegl.cpp
+++ b/indra/llrender/llimagegl.cpp
@@ -368,6 +368,18 @@ void LLImageGL::restoreGL()
 	}
 }
 
+//static 
+void LLImageGL::dirtyTexOptions()
+{
+	for (std::set<LLImageGL*>::iterator iter = sImageList.begin();
+		 iter != sImageList.end(); iter++)
+	{
+		LLImageGL* glimage = *iter;
+		glimage->mTexOptionsDirty = true;
+		stop_glerror();
+	}
+	
+}
 //----------------------------------------------------------------------------
 
 //for server side use only.
@@ -1057,6 +1069,8 @@ BOOL LLImageGL::setSubImageFromFrameBuffer(S32 fb_x, S32 fb_y, S32 x_pos, S32 y_
 			checkTexSize(true) ;
 			llcallstacks << fb_x << " : " << fb_y << " : " << x_pos << " : " << y_pos << " : " << width << " : " << height <<
 				" : " << (S32)mComponents << llcallstacksendl ;
+
+			log_glerror() ;
 		}
 
 		glCopyTexSubImage2D(GL_TEXTURE_2D, 0, fb_x, fb_y, x_pos, y_pos, width, height);
diff --git a/indra/llrender/llimagegl.h b/indra/llrender/llimagegl.h
index 87a835cdcc..6c980984c0 100644
--- a/indra/llrender/llimagegl.h
+++ b/indra/llrender/llimagegl.h
@@ -64,6 +64,7 @@ public:
 	// Save off / restore GL textures
 	static void destroyGL(BOOL save_state = TRUE);
 	static void restoreGL();
+	static void dirtyTexOptions();
 
 	// Sometimes called externally for textures not using LLImageGL (should go away...)	
 	static S32 updateBoundTexMem(const S32 mem, const S32 ncomponents, S32 category) ;
diff --git a/indra/llrender/llrender.cpp b/indra/llrender/llrender.cpp
index e26acd53a3..8eb160f4e7 100644
--- a/indra/llrender/llrender.cpp
+++ b/indra/llrender/llrender.cpp
@@ -431,6 +431,9 @@ void LLTexUnit::setTextureFilteringOption(LLTexUnit::eTextureFilterOptions optio
 			if (gGL.mMaxAnisotropy < 1.f)
 			{
 				glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &gGL.mMaxAnisotropy);
+
+				llinfos << "gGL.mMaxAnisotropy: " << gGL.mMaxAnisotropy << llendl ;
+				gGL.mMaxAnisotropy = llmax(1.f, gGL.mMaxAnisotropy) ;
 			}
 			glTexParameterf(sGLTextureType[mCurrTexType], GL_TEXTURE_MAX_ANISOTROPY_EXT, gGL.mMaxAnisotropy);
 		}
diff --git a/indra/llrender/llvertexbuffer.cpp b/indra/llrender/llvertexbuffer.cpp
index de4501dd0f..02160b09c4 100644
--- a/indra/llrender/llvertexbuffer.cpp
+++ b/indra/llrender/llvertexbuffer.cpp
@@ -27,7 +27,7 @@
 #include "linden_common.h"
 
 #include <boost/static_assert.hpp>
-
+#include "llsys.h"
 #include "llvertexbuffer.h"
 // #include "llrender.h"
 #include "llglheaders.h"
@@ -854,6 +854,14 @@ U8* LLVertexBuffer::mapBuffer(S32 access)
 
 		if (!mMappedData)
 		{
+			log_glerror();
+
+			//check the availability of memory
+			U32 avail_phy_mem, avail_vir_mem;
+			LLMemoryInfo::getAvailableMemoryKB(avail_phy_mem, avail_vir_mem) ;
+			llinfos << "Available physical mwmory(KB): " << avail_phy_mem << llendl ; 
+			llinfos << "Available virtual memory(KB): " << avail_vir_mem << llendl;
+
 			//--------------------
 			//print out more debug info before crash
 			llinfos << "vertex buffer size: (num verts : num indices) = " << getNumVerts() << " : " << getNumIndices() << llendl ;
@@ -875,6 +883,8 @@ U8* LLVertexBuffer::mapBuffer(S32 access)
 
 		if (!mMappedIndexData)
 		{
+			log_glerror();
+
 			GLint buff;
 			glGetIntegerv(GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB, &buff);
 			if ((GLuint)buff != mGLIndices)