GL_AMD_interleaved_elements
http://www.opengl.org/registry/specs/AMD/interleaved_elements.txt
GL_AMD_interleaved_elements
	GL_RED 0x1903
	GL_GREEN 0x1904
	GL_BLUE 0x1905
	GL_ALPHA 0x1906
	GL_RG8UI 0x8238
	GL_RG16UI 0x823A
	GL_RGBA8UI 0x8D7C
	GL_VERTEX_ELEMENT_SWIZZLE_AMD 0x91A4
	GL_VERTEX_ID_SWIZZLE_AMD 0x91A5
	void glVertexAttribParameteriAMD (GLuint index, GLenum pname, GLint param)
