4 files changed, 54 insertions, 13 deletions

diff --git a/indra/llrender/llgl.cpp b/indra/llrender/llgl.cpp
index 3dfedbe2cf..44b5a040d9 100644
--- a/indra/llrender/llgl.cpp
+++ b/indra/llrender/llgl.cpp
@@ -86,13 +86,13 @@ void APIENTRY gl_debug_callback(GLenum source,
                                 const GLchar* message,
                                 GLvoid* userParam)
 {
-    if (severity != GL_DEBUG_SEVERITY_HIGH_ARB // &&
-        //severity != GL_DEBUG_SEVERITY_MEDIUM_ARB &&
-        //severity != GL_DEBUG_SEVERITY_LOW_ARB
+    /*if (severity != GL_DEBUG_SEVERITY_HIGH_ARB // &&
+        severity != GL_DEBUG_SEVERITY_MEDIUM_ARB &&
+        severity != GL_DEBUG_SEVERITY_LOW_ARB
         )
     { //suppress out-of-spec messages sent by nvidia driver (mostly vertexbuffer hints)
         return;
-    }
+    }*/
 
     if (severity == GL_DEBUG_SEVERITY_HIGH_ARB)
     {
@@ -1628,7 +1628,7 @@ void LLGLManager::initExtensions()
     mHasMipMapGeneration = mHasFramebufferObject || mGLVersion >= 1.4f;
 
     mHasBlendFuncSeparate = ExtensionExists("GL_EXT_blend_func_separate", gGLHExts.mSysExts);
-    mHasDebugOutput = ExtensionExists("GL_ARB_debug_output", gGLHExts.mSysExts);
+    mHasDebugOutput = mGLVersion >= 4.3f ? TRUE : FALSE;
     mHasTransformFeedback = mGLVersion >= 4.f ? TRUE : FALSE;
 #endif
 
diff --git a/indra/llrender/llglslshader.cpp b/indra/llrender/llglslshader.cpp
index 91d756c0d1..bc349c2015 100644
--- a/indra/llrender/llglslshader.cpp
+++ b/indra/llrender/llglslshader.cpp
@@ -348,13 +348,20 @@ void LLGLSLShader::unloadInternal()
     if (mProgramObject)
     {
         GLuint obj[1024];
-        GLsizei count;
+        GLsizei count = 0;
         glGetAttachedShaders(mProgramObject, 1024, &count, obj);
 
         for (GLsizei i = 0; i < count; i++)
         {
             glDetachShader(mProgramObject, obj[i]);
-            glDeleteShader(obj[i]);
+        }
+
+        for (GLsizei i = 0; i < count; i++)
+        {
+            if (glIsShader(obj[i]))
+            {
+                glDeleteShader(obj[i]);
+            }
         }
 
         glDeleteProgram(mProgramObject);
diff --git a/indra/llrender/llrender.cpp b/indra/llrender/llrender.cpp
index 1f060b674f..471dbce1dd 100644
--- a/indra/llrender/llrender.cpp
+++ b/indra/llrender/llrender.cpp
@@ -876,8 +876,8 @@ void LLRender::init()
     if (gGLManager.mHasDebugOutput && gDebugGL)
     { //setup debug output callback
         //glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DEBUG_SEVERITY_LOW_ARB, 0, NULL, GL_TRUE);
-        glDebugMessageCallback((GLDEBUGPROCARB) gl_debug_callback, NULL);
-        glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB);
+        glDebugMessageCallback((GLDEBUGPROC) gl_debug_callback, NULL);
+        glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
     }
 #endif
 
diff --git a/indra/llrender/llshadermgr.cpp b/indra/llrender/llshadermgr.cpp
index 96e83e6fbe..5293166ec3 100644
--- a/indra/llrender/llshadermgr.cpp
+++ b/indra/llrender/llshadermgr.cpp
@@ -558,7 +558,7 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
 //============================================================================
 // Load Shader
 
-static std::string get_object_log(GLuint ret)
+static std::string get_shader_log(GLuint ret)
 {
 	std::string res;
 	
@@ -569,13 +569,46 @@ static std::string get_object_log(GLuint ret)
 	{
 		//the log could be any size, so allocate appropriately
 		GLchar* log = new GLchar[length];
-        glGetProgramInfoLog(ret, length, &length, log);
+        glGetShaderInfoLog(ret, length, &length, log);
 		res = std::string((char *)log);
 		delete[] log;
 	}
 	return res;
 }
 
+static std::string get_program_log(GLuint ret)
+{
+    std::string res;
+
+    //get log length 
+    GLint length;
+    glGetProgramiv(ret, GL_INFO_LOG_LENGTH, &length);
+    if (length > 0)
+    {
+        //the log could be any size, so allocate appropriately
+        GLchar* log = new GLchar[length];
+        glGetProgramInfoLog(ret, length, &length, log);
+        res = std::string((char*)log);
+        delete[] log;
+    }
+    return res;
+}
+
+// get the info log for the given object, be it a shader or program object
+// NOTE: ret MUST be a shader OR a program object
+static std::string get_object_log(GLuint ret)
+{
+    if (glIsProgram(ret))
+    {
+        return get_program_log(ret);
+    }
+    else
+    {
+        llassert(glIsShader(ret));
+        return get_shader_log(ret);
+    }
+}
+
 //dump shader source for debugging
 void LLShaderMgr::dumpShaderSource(U32 shader_code_count, GLchar** shader_code_text)
 {
@@ -594,7 +627,8 @@ void LLShaderMgr::dumpShaderSource(U32 shader_code_count, GLchar** shader_code_t
 
 void LLShaderMgr::dumpObjectLog(GLuint ret, BOOL warns, const std::string& filename)
 {
-	std::string log = get_object_log(ret);
+    std::string log;
+    log = get_object_log(ret);
     std::string fname = filename;
     if (filename.empty())
     {
@@ -1078,7 +1112,7 @@ BOOL LLShaderMgr::linkProgramObject(GLuint obj, BOOL suppress_errors)
         return success;
 	}
 
-	std::string log = get_object_log(obj);
+	std::string log = get_program_log(obj);
 	LLStringUtil::toLower(log);
 	if (log.find("software") != std::string::npos)
 	{