Merged branch 'dev_native' into lm_sla_supports_auto

Added igl library files

src/igl/opengl/report_gl_error.cpp

@@ -0,0 +1,61 @@
+// This file is part of libigl, a simple c++ geometry processing library.
+// 
+// Copyright (C) 2013 Alec Jacobson <alecjacobson@gmail.com>
+// 
+// This Source Code Form is subject to the terms of the Mozilla Public License 
+// v. 2.0. If a copy of the MPL was not distributed with this file, You can 
+// obtain one at http://mozilla.org/MPL/2.0/.
+#include "report_gl_error.h"
+#include "../verbose.h"
+#include <cstdio>
+
+IGL_INLINE GLenum igl::opengl::report_gl_error(const std::string id)
+{
+  // http://stackoverflow.com/q/28485180/148668
+
+  // gluErrorString was deprecated
+  const auto gluErrorString = [](GLenum errorCode)->const char *
+  {
+    switch(errorCode)
+    {
+      default:
+        return "unknown error code";
+      case GL_NO_ERROR:
+        return "no error";
+      case GL_INVALID_ENUM:
+        return "invalid enumerant";
+      case GL_INVALID_VALUE:
+        return "invalid value";
+      case GL_INVALID_OPERATION:
+        return "invalid operation";
+#ifndef GL_VERSION_3_0
+      case GL_STACK_OVERFLOW:
+        return "stack overflow";
+      case GL_STACK_UNDERFLOW:
+        return "stack underflow";
+      case GL_TABLE_TOO_LARGE:
+        return "table too large";
+#endif
+      case GL_OUT_OF_MEMORY:
+        return "out of memory";
+#ifdef GL_EXT_framebuffer_object
+      case GL_INVALID_FRAMEBUFFER_OPERATION_EXT:
+        return "invalid framebuffer operation";
+#endif
+    }
+  };
+
+  GLenum err = glGetError();
+  if(GL_NO_ERROR != err)
+  {
+    verbose("GL_ERROR: ");
+    fprintf(stderr,"%s%s\n",id.c_str(),gluErrorString(err));
+  }
+  return err;
+}
+
+IGL_INLINE GLenum igl::opengl::report_gl_error()
+{
+  return igl::opengl::report_gl_error(std::string(""));
+}
+