From 097aea69d4d2029b6cc6a452f7a178d27cd0c317 Mon Sep 17 00:00:00 2001
From: spanne <spanne@7f0cb862-5218-0410-a997-914c9d46530a>
Date: Sun, 2 Nov 2008 19:26:36 +0000
Subject: [PATCH] Do not depend on GLU, it will vanish in the future, at least
 in its current form.

git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@746 7f0cb862-5218-0410-a997-914c9d46530a
---
 freeglut/freeglut/src/freeglut_misc.c | 37 ++++++++++++++++++++++++++-
 1 file changed, 36 insertions(+), 1 deletion(-)

diff --git a/freeglut/freeglut/src/freeglut_misc.c b/freeglut/freeglut/src/freeglut_misc.c
index 067f0aa..06854c9 100644
--- a/freeglut/freeglut/src/freeglut_misc.c
+++ b/freeglut/freeglut/src/freeglut_misc.c
@@ -76,6 +76,41 @@ int FGAPIENTRY glutExtensionSupported( const char* extension )
   return 0 ;
 }
 
+#ifndef GL_INVALID_FRAMEBUFFER_OPERATION
+#ifdef GL_INVALID_FRAMEBUFFER_OPERATION_EXT
+#define GL_INVALID_FRAMEBUFFER_OPERATION GL_INVALID_FRAMEBUFFER_OPERATION_EXT
+#else
+#define GL_INVALID_FRAMEBUFFER_OPERATION 0x0506
+#endif
+#endif
+
+#ifndef GL_TEXTURE_TOO_LARGE
+#ifdef GL_TEXTURE_TOO_LARGE_EXT
+#define GL_TEXTURE_TOO_LARGE GL_TEXTURE_TOO_LARGE_EXT
+#else
+#define GL_TEXTURE_TOO_LARGE 0x8065
+#endif
+#endif
+
+/*
+ * A cut-down local version of gluErrorString to avoid depending on GLU.
+ */
+static const char* fghErrorString( GLenum error )
+{
+  switch ( error ) {
+  case GL_INVALID_ENUM: return "invalid enumerant";
+  case GL_INVALID_VALUE: return "invalid value";
+  case GL_INVALID_OPERATION: return "invalid operation";
+  case GL_STACK_OVERFLOW: return "stack overflow";
+  case GL_STACK_UNDERFLOW: return "stack underflow";
+  case GL_OUT_OF_MEMORY: return "out of memory";
+  case GL_TABLE_TOO_LARGE: return "table too large";
+  case GL_INVALID_FRAMEBUFFER_OPERATION: return "invalid framebuffer operation";
+  case GL_TEXTURE_TOO_LARGE: return "texture too large";
+  default: return "unknown GL error";
+  }
+}
+
 /*
  * This function reports all the OpenGL errors that happened till now
  */
@@ -84,7 +119,7 @@ void FGAPIENTRY glutReportErrors( void )
     GLenum error;
     FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutReportErrors" );
     while( ( error = glGetError() ) != GL_NO_ERROR )
-        fgWarning( "GL error: %s", gluErrorString( error ) );
+        fgWarning( "GL error: %s", fghErrorString( error ) );
 }
 
 /*