#define GL_REPLACE 0x1E01
#define GL_INCR 0x1E02
#define GL_DECR 0x1E03
+
+#define GL_POLYGON_OFFSET_FACTOR 0x8038
+#define GL_POLYGON_OFFSET_UNITS 0x2A00
+#define GL_POLYGON_OFFSET_POINT 0x2A01
+#define GL_POLYGON_OFFSET_LINE 0x2A02
+#define GL_POLYGON_OFFSET_FILL 0x8037
#endif
// GL_ARB_multitexture
extern void (GLAPIENTRY *qglCopyTexSubImage1D)(GLenum target, GLint level, GLint xoffset, GLint x, GLint y, GLsizei width);
extern void (GLAPIENTRY *qglCopyTexSubImage2D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height);
+extern void (GLAPIENTRY *qglPolygonOffset)(GLfloat factor, GLfloat units);
+
#if WIN32
extern int (WINAPI *qwglChoosePixelFormat)(HDC, CONST PIXELFORMATDESCRIPTOR *);
extern int (WINAPI *qwglDescribePixelFormat)(HDC, int, UINT, LPPIXELFORMATDESCRIPTOR);