1 files changed, 41 insertions, 39 deletions

diff --git a/indra/llrender/llgl.cpp b/indra/llrender/llgl.cpp
index 6c0fcb8960..cccc334904 100644
--- a/indra/llrender/llgl.cpp
+++ b/indra/llrender/llgl.cpp
@@ -215,8 +215,6 @@ LLMatrix4 gGLObliqueProjectionInverse;
 
 std::list<LLGLUpdate*> LLGLUpdate::sGLQ;
 
-#if (LL_WINDOWS || LL_LINUX)  && !LL_MESA_HEADLESS
-
 #if LL_WINDOWS
 // WGL_ARB_create_context
 PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribsARB = nullptr;
@@ -236,8 +234,6 @@ PFNWGLBLITCONTEXTFRAMEBUFFERAMDPROC             wglBlitContextFramebufferAMD = n
 PFNWGLSWAPINTERVALEXTPROC    wglSwapIntervalEXT = nullptr;
 PFNWGLGETSWAPINTERVALEXTPROC wglGetSwapIntervalEXT = nullptr;
 
-#endif
-
 // GL_VERSION_1_2
 //PFNGLDRAWRANGEELEMENTSPROC  glDrawRangeElements = nullptr;
 //PFNGLTEXIMAGE3DPROC         glTexImage3D = nullptr;
@@ -1390,6 +1386,9 @@ void LLGLManager::shutdownGL()
 
 void LLGLManager::initExtensions()
 {
+#if LL_LINUX
+    glh_init_extensions("");
+#endif
 #if LL_DARWIN
     GLint num_extensions = 0;
     std::string all_extensions{""};
@@ -1435,10 +1434,9 @@ void LLGLManager::initExtensions()
 
     mInited = true;
 
-#if (LL_WINDOWS || LL_LINUX) && !LL_MESA_HEADLESS
+#if LL_WINDOWS
     LL_DEBUGS("RenderInit") << "GL Probe: Getting symbols" << LL_ENDL;
 
-#if LL_WINDOWS
     // WGL_AMD_gpu_association
     wglGetGPUIDsAMD = (PFNWGLGETGPUIDSAMDPROC)GLH_EXT_GET_PROC_ADDRESS("wglGetGPUIDsAMD");
     wglGetGPUInfoAMD = (PFNWGLGETGPUINFOAMDPROC)GLH_EXT_GET_PROC_ADDRESS("wglGetGPUInfoAMD");
@@ -1456,8 +1454,6 @@ void LLGLManager::initExtensions()
 
     // WGL_ARB_create_context
     wglCreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)GLH_EXT_GET_PROC_ADDRESS("wglCreateContextAttribsARB");
-#endif
-
 
     // Load entire OpenGL API through GetProcAddress, leaving sections beyond mGLVersion unloaded
 
@@ -2289,6 +2285,35 @@ void flush_glerror()
     glGetError();
 }
 
+const std::string getGLErrorString(GLenum error)
+{
+    switch(error)
+    {
+    case GL_NO_ERROR:
+        return "No Error";
+    case GL_INVALID_ENUM:
+        return "Invalid Enum";
+    case GL_INVALID_VALUE:
+        return "Invalid Value";
+    case GL_INVALID_OPERATION:
+        return "Invalid Operation";
+    case GL_INVALID_FRAMEBUFFER_OPERATION:
+        return "Invalid Framebuffer Operation";
+    case GL_OUT_OF_MEMORY:
+        return "Out of Memory";
+    case GL_STACK_UNDERFLOW:
+        return "Stack Underflow";
+    case GL_STACK_OVERFLOW:
+        return "Stack Overflow";
+#ifdef GL_TABLE_TOO_LARGE
+    case GL_TABLE_TOO_LARGE:
+        return "Table too large";
+#endif
+    default:
+        return "UNKNOWN ERROR";
+    }
+}
+
 //this function outputs gl error to the log file, does not crash the code.
 void log_glerror()
 {
@@ -2301,17 +2326,8 @@ void log_glerror()
     error = glGetError();
     while (LL_UNLIKELY(error))
     {
-        GLubyte const * gl_error_msg = gluErrorString(error);
-        if (NULL != gl_error_msg)
-        {
-            LL_WARNS() << "GL Error: " << error << " GL Error String: " << gl_error_msg << LL_ENDL ;
-        }
-        else
-        {
-            // gluErrorString returns NULL for some extensions' error codes.
-            // you'll probably have to grep for the number in glext.h.
-            LL_WARNS() << "GL Error: UNKNOWN 0x" << std::hex << error << std::dec << LL_ENDL;
-        }
+        std::string gl_error_msg = getGLErrorString(error);
+        LL_WARNS() << "GL Error: 0x" << std::hex << error << std::dec << " GL Error String: " << gl_error_msg << LL_ENDL;
         error = glGetError();
     }
 }
@@ -2325,27 +2341,12 @@ void do_assert_glerror()
     if (LL_UNLIKELY(error))
     {
         quit = true;
-        GLubyte const * gl_error_msg = gluErrorString(error);
-        if (NULL != gl_error_msg)
-        {
-            LL_WARNS("RenderState") << "GL Error:" << error<< LL_ENDL;
-            LL_WARNS("RenderState") << "GL Error String:" << gl_error_msg << LL_ENDL;
-
-            if (gDebugSession)
-            {
-                gFailLog << "GL Error:" << gl_error_msg << std::endl;
-            }
-        }
-        else
+        std::string gl_error_msg = getGLErrorString(error);
+        LL_WARNS("RenderState") << "GL Error: 0x" << std::hex << error << std::dec << LL_ENDL;
+        LL_WARNS("RenderState") << "GL Error String: " << gl_error_msg << LL_ENDL;
+        if (gDebugSession)
         {
-            // gluErrorString returns NULL for some extensions' error codes.
-            // you'll probably have to grep for the number in glext.h.
-            LL_WARNS("RenderState") << "GL Error: UNKNOWN 0x" << std::hex << error << std::dec << LL_ENDL;
-
-            if (gDebugSession)
-            {
-                gFailLog << "GL Error: UNKNOWN 0x" << std::hex << error << std::dec << std::endl;
-            }
+            gFailLog << "GL Error: 0x" << std::hex << error << std::dec << " GL Error String: " << gl_error_msg << std::endl;
         }
     }
 
@@ -2588,6 +2589,7 @@ void parse_gl_version( S32* major, S32* minor, S32* release, std::string* vendor
     {
         return;
     }
+    LL_INFOS() << "GL: "  << version << LL_ENDL;
 
     version_string->assign(version);