GL_ARB_vertex_shader
http://oss.sgi.com/projects/ogl-sample/registry/ARB/vertex_shader.txt
	GL_VERTEX_SHADER_ARB 0x8B31
	GL_MAX_VERTEX_UNIFORM_COMPONENTS_ARB 0x8B4A
	GL_MAX_VARYING_FLOATS_ARB 0x8B4B
	GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS_ARB 0x8B4C
	GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS_ARB 0x8B4D
	GL_OBJECT_ACTIVE_ATTRIBUTES_ARB 0x8B89
	GL_OBJECT_ACTIVE_ATTRIBUTE_MAX_LENGTH_ARB 0x8B8A
	void glBindAttribLocationARB (GLhandleARB programObj, GLuint index, const GLcharARB* name)
	void glGetActiveAttribARB (GLhandleARB programObj, GLuint index, GLsizei maxLength, GLsizei* length, GLint *size, GLenum *type, GLcharARB *name)
	GLint glGetAttribLocationARB (GLhandleARB programObj, const GLcharARB* name)