29 files changed, 1185 insertions, 0 deletions

diff --git a/src/util/check_error.c b/src/util/check_error.c
new file mode 100644
index 0000000..dbe5b8f
--- a/dev/null
+++ b/src/util/check_error.c
@@ -0,0 +1,17 @@
+#include <GL/glut.h>
+#include <error.h>
+#include <errno.h>
+
+void
+check_error (const char *filename, unsigned int linenum)
+{
+  GLenum errCode = glGetError ();
+  if (errCode != GL_NO_ERROR)
+    {
+      const GLubyte *errString = gluErrorString (errCode);
+      error_at_line (-1, errno, filename, linenum,
+                     "OpenGL Error %s", errString);
+    }
+
+  return;
+}